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		<id>https://www.explainxkcd.com/wiki/index.php?action=history&amp;feed=atom&amp;title=3112%3A_Geology_Murder</id>
		<title>3112: Geology Murder - Revision history</title>
		<link rel="self" type="application/atom+xml" href="https://www.explainxkcd.com/wiki/index.php?action=history&amp;feed=atom&amp;title=3112%3A_Geology_Murder"/>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;action=history"/>
		<updated>2026-05-23T14:49:01Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381817&amp;oldid=prev</id>
		<title>FaviFake: /* Explanation */ Complete</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381817&amp;oldid=prev"/>
				<updated>2025-07-24T12:48:21Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation: &lt;/span&gt; Complete&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 12:48, 24 July 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l10&quot; &gt;Line 10:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 10:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;{{incomplete|This page was created by an IRON-RICH BOT. Don't remove this notice too soon.}}&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Someone has been stabbed to death and two {{w|geology|geologists}} are examining the corpse. However, rather than using {{w|forensic science}} techniques that might be typical for investigating a murder, they inappropriately apply geological analyses, leading to some unlikely suggestions about what occurred. Firstly, they note that the victim is lying &amp;quot;uncoNforMably&amp;quot; (not &amp;quot;uncoMforTably&amp;quot;) on the bench. An {{w|unconformity}} in geology is a gap of missing strata between an upper and lower layer, in this case implying that there is missing information about how the man came to be lying on the bench, or referring to the discontinuity between the material of the bench and that of the body with its clothing.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Someone has been stabbed to death and two {{w|geology|geologists}} are examining the corpse. However, rather than using {{w|forensic science}} techniques that might be typical for investigating a murder, they inappropriately apply geological analyses, leading to some unlikely suggestions about what occurred.&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Firstly, they note that the victim is lying &amp;quot;uncoNforMably&amp;quot; (not &amp;quot;uncoMforTably&amp;quot;) on the bench. An {{w|unconformity}} in geology is a gap of missing strata between an upper and lower layer, in this case implying that there is missing information about how the man came to be lying on the bench, or referring to the discontinuity between the material of the bench and that of the body with its clothing.&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;iron-rich intrusion in his back&amp;quot; refers to the dagger that presumably killed him. An {{w|intrusion}} is rock formed when {{w|magma}} slowly cools below ground, and the geologists are speculating that the dagger formed after steel flowed into place in and on the body (and somehow became dagger-shaped). The dagger is &amp;quot;iron-rich&amp;quot; because it's made of steel, which is composed largely of iron.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;iron-rich intrusion in his back&amp;quot; refers to the dagger that presumably killed him. An {{w|intrusion}} is rock formed when {{w|magma}} slowly cools below ground, and the geologists are speculating that the dagger formed after steel flowed into place in and on the body (and somehow became dagger-shaped). The dagger is &amp;quot;iron-rich&amp;quot; because it's made of steel, which is composed largely of iron.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>FaviFake</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381044&amp;oldid=prev</id>
		<title>2601:CD:CD00:B7A6:A843:10FB:600D:5F18: added text referring geologic pipes.</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381044&amp;oldid=prev"/>
				<updated>2025-07-09T18:12:23Z</updated>
		
		<summary type="html">&lt;p&gt;added text referring geologic pipes.&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 18:12, 9 July 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l19&quot; &gt;Line 19:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 19:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;{{w|Clastic rock|Clastic}}&amp;quot; refers to rock made up of broken pieces of older rocks. In this case it would suggest that a {{w|rift}} - a gap or fissure - opened up in the person's back and the dagger fell in. Having long linear gaps appear is something that happens to the Earth's crust, and can lead to clastic rock when other rock is swept into the gap. While {{w|skin fissure}}s are a real condition, and some genetic conditions such as {{w|ichthyosis}} can cause them, they don't normally cause rocks or daggers to collect in people's backs.{{cn}} &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;{{w|Clastic rock|Clastic}}&amp;quot; refers to rock made up of broken pieces of older rocks. In this case it would suggest that a {{w|rift}} - a gap or fissure - opened up in the person's back and the dagger fell in. Having long linear gaps appear is something that happens to the Earth's crust, and can lead to clastic rock when other rock is swept into the gap. While {{w|skin fissure}}s are a real condition, and some genetic conditions such as {{w|ichthyosis}} can cause them, they don't normally cause rocks or daggers to collect in people's backs.{{cn}} &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In geology a &amp;quot;pipe&amp;quot; is a structure formed by magma or hydrothermal &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;vents&lt;/del&gt;.&amp;#160; The &amp;quot;pipes carrying iron-rich fluid&amp;quot; would be similar to a mineral rich hydrothermal feature like a geyser or a black smoker on the seafloor.&amp;#160; In this case they are the person's {{w|blood vessel}}s, as blood has a large amount of the molecule {{w|hemoglobin}}, which has iron atoms in it that help it transport oxygen. The geologists speculate that the iron {{w|Precipitation (chemistry)|precipitated}} - sedimented out - out of the blood to form the dagger, which is highly unlikely. This is the kind of geophysical process which tends to produce {{w|Vein (geology)|veins}} of minerals in actual geology, but is not generally associated with {{w|vein}}s in the human body. Notably, the {{w|Great Oxygenation Event}}, when oxygen-producing organisms first created an oxidizing environment on Earth, resulted in dense precipitation of iron-rich compounds in the oceans. However, metallic iron was not created; even the environment before the Great Oxygenation Event wasn't reducing enough to create metallic iron.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In geology a &amp;quot;pipe&amp;quot; is a structure formed by magma&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, geysers, &lt;/ins&gt;or &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;{{w|&lt;/ins&gt;hydrothermal &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;vent}}s&lt;/ins&gt;.&amp;#160; The &amp;quot;pipes carrying iron-rich fluid&amp;quot; would be similar to a mineral rich hydrothermal feature like a geyser or a black smoker on the seafloor.&amp;#160; In this case they are the person's {{w|blood vessel}}s, as blood has a large amount of the molecule {{w|hemoglobin}}, which has iron atoms in it that help it transport oxygen. The geologists speculate that the iron {{w|Precipitation (chemistry)|precipitated}} - sedimented out - out of the blood to form the dagger, which is highly unlikely. This is the kind of geophysical process which tends to produce {{w|Vein (geology)|veins}} of minerals in actual geology, but is not generally associated with {{w|vein}}s in the human body. Notably, the {{w|Great Oxygenation Event}}, when oxygen-producing organisms first created an oxidizing environment on Earth, resulted in dense precipitation of iron-rich compounds in the oceans. However, metallic iron was not created; even the environment before the Great Oxygenation Event wasn't reducing enough to create metallic iron.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>2601:CD:CD00:B7A6:A843:10FB:600D:5F18</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381043&amp;oldid=prev</id>
		<title>2601:CD:CD00:B7A6:A843:10FB:600D:5F18: added text referring geologic pipes.</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381043&amp;oldid=prev"/>
				<updated>2025-07-09T17:56:17Z</updated>
		
		<summary type="html">&lt;p&gt;added text referring geologic pipes.&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 17:56, 9 July 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l19&quot; &gt;Line 19:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 19:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;{{w|Clastic rock|Clastic}}&amp;quot; refers to rock made up of broken pieces of older rocks. In this case it would suggest that a {{w|rift}} - a gap or fissure - opened up in the person's back and the dagger fell in. Having long linear gaps appear is something that happens to the Earth's crust, and can lead to clastic rock when other rock is swept into the gap. While {{w|skin fissure}}s are a real condition, and some genetic conditions such as {{w|ichthyosis}} can cause them, they don't normally cause rocks or daggers to collect in people's backs.{{cn}} &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;{{w|Clastic rock|Clastic}}&amp;quot; refers to rock made up of broken pieces of older rocks. In this case it would suggest that a {{w|rift}} - a gap or fissure - opened up in the person's back and the dagger fell in. Having long linear gaps appear is something that happens to the Earth's crust, and can lead to clastic rock when other rock is swept into the gap. While {{w|skin fissure}}s are a real condition, and some genetic conditions such as {{w|ichthyosis}} can cause them, they don't normally cause rocks or daggers to collect in people's backs.{{cn}} &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;pipes carrying iron-rich fluid&amp;quot; are the person's {{w|blood vessel}}s, as blood has a large amount of the molecule {{w|hemoglobin}}, which has iron atoms in it that help it transport oxygen. The geologists speculate that the iron {{w|Precipitation (chemistry)|precipitated}} - sedimented out - out of the blood to form the dagger, which is highly unlikely. This is the kind of geophysical process which tends to produce {{w|Vein (geology)|veins}} of minerals in actual geology, but is not generally associated with {{w|vein}}s in the human body. Notably, the {{w|Great Oxygenation Event}}, when oxygen-producing organisms first created an oxidizing environment on Earth, resulted in dense precipitation of iron-rich compounds in the oceans. However, metallic iron was not created; even the environment before the Great Oxygenation Event wasn't reducing enough to create metallic iron.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;In geology a &amp;quot;pipe&amp;quot; is a structure formed by magma or hydrothermal vents.&amp;#160; &lt;/ins&gt;The &amp;quot;pipes carrying iron-rich fluid&amp;quot; &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;would be similar to a mineral rich hydrothermal feature like a geyser or a black smoker on the seafloor.&amp;#160; In this case they &lt;/ins&gt;are the person's {{w|blood vessel}}s, as blood has a large amount of the molecule {{w|hemoglobin}}, which has iron atoms in it that help it transport oxygen. The geologists speculate that the iron {{w|Precipitation (chemistry)|precipitated}} - sedimented out - out of the blood to form the dagger, which is highly unlikely. This is the kind of geophysical process which tends to produce {{w|Vein (geology)|veins}} of minerals in actual geology, but is not generally associated with {{w|vein}}s in the human body. Notably, the {{w|Great Oxygenation Event}}, when oxygen-producing organisms first created an oxidizing environment on Earth, resulted in dense precipitation of iron-rich compounds in the oceans. However, metallic iron was not created; even the environment before the Great Oxygenation Event wasn't reducing enough to create metallic iron.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>2601:CD:CD00:B7A6:A843:10FB:600D:5F18</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381038&amp;oldid=prev</id>
		<title>82.13.184.33: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381038&amp;oldid=prev"/>
				<updated>2025-07-09T13:18:41Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 13:18, 9 July 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l19&quot; &gt;Line 19:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 19:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;{{w|Clastic rock|Clastic}}&amp;quot; refers to rock made up of broken pieces of older rocks. In this case it would suggest that a {{w|rift}} - a gap or fissure - opened up in the person's back and the dagger fell in. Having long linear gaps appear is something that happens to the Earth's crust, and can lead to clastic rock when other rock is swept into the gap. While {{w|skin fissure}}s are a real condition, and some genetic conditions such as {{w|ichthyosis}} can cause them, they don't normally cause rocks or daggers to collect in people's backs.{{cn}} &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;{{w|Clastic rock|Clastic}}&amp;quot; refers to rock made up of broken pieces of older rocks. In this case it would suggest that a {{w|rift}} - a gap or fissure - opened up in the person's back and the dagger fell in. Having long linear gaps appear is something that happens to the Earth's crust, and can lead to clastic rock when other rock is swept into the gap. While {{w|skin fissure}}s are a real condition, and some genetic conditions such as {{w|ichthyosis}} can cause them, they don't normally cause rocks or daggers to collect in people's backs.{{cn}} &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;pipes carrying iron-rich fluid&amp;quot; are the person's {{w|blood vessel}}s, as blood has a large amount of the molecule {{w|hemoglobin}}, which has iron atoms in it that help it transport oxygen. The geologists speculate that the iron {{w|Precipitation (chemistry)|precipitated}} - sedimented out - out of the blood to form the dagger, which is highly unlikely. This is the kind of geophysical process which tends to produce {{w|Vein (geology)|veins}} of minerals in actual geology, but is not generally associated with {{w|vein}}s in the human body. Notably, the &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;&amp;quot;&lt;/del&gt;{{w|Great Oxygenation Event}}&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;&amp;quot;&lt;/del&gt;, when oxygen-producing organisms first created an oxidizing environment on Earth, resulted in dense precipitation of iron-rich compounds in the oceans. However, metallic iron was not created; even the environment before the Great Oxygenation Event wasn't reducing enough to create metallic iron.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;pipes carrying iron-rich fluid&amp;quot; are the person's {{w|blood vessel}}s, as blood has a large amount of the molecule {{w|hemoglobin}}, which has iron atoms in it that help it transport oxygen. The geologists speculate that the iron {{w|Precipitation (chemistry)|precipitated}} - sedimented out - out of the blood to form the dagger, which is highly unlikely. This is the kind of geophysical process which tends to produce {{w|Vein (geology)|veins}} of minerals in actual geology, but is not generally associated with {{w|vein}}s in the human body. Notably, the {{w|Great Oxygenation Event}}, when oxygen-producing organisms first created an oxidizing environment on Earth, resulted in dense precipitation of iron-rich compounds in the oceans. However, metallic iron was not created; even the environment before the Great Oxygenation Event wasn't reducing enough to create metallic iron.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>82.13.184.33</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381032&amp;oldid=prev</id>
		<title>BunsenH: GOE was the most significant precipitation of &quot;iron&quot; in geological history, though not of metallic iron. Ask a geologist about precipitation of iron, and the GOE is the first thing in mind.</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381032&amp;oldid=prev"/>
				<updated>2025-07-09T04:42:18Z</updated>
		
		<summary type="html">&lt;p&gt;GOE was the most significant precipitation of &amp;quot;iron&amp;quot; in geological history, though not of metallic iron. Ask a geologist about precipitation of iron, and the GOE is the first thing in mind.&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 04:42, 9 July 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l19&quot; &gt;Line 19:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 19:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;{{w|Clastic rock|Clastic}}&amp;quot; refers to rock made up of broken pieces of older rocks. In this case it would suggest that a {{w|rift}} - a gap or fissure - opened up in the person's back and the dagger fell in. Having long linear gaps appear is something that happens to the Earth's crust, and can lead to clastic rock when other rock is swept into the gap. While {{w|skin fissure}}s are a real condition, and some genetic conditions such as {{w|ichthyosis}} can cause them, they don't normally cause rocks or daggers to collect in people's backs.{{cn}} &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;{{w|Clastic rock|Clastic}}&amp;quot; refers to rock made up of broken pieces of older rocks. In this case it would suggest that a {{w|rift}} - a gap or fissure - opened up in the person's back and the dagger fell in. Having long linear gaps appear is something that happens to the Earth's crust, and can lead to clastic rock when other rock is swept into the gap. While {{w|skin fissure}}s are a real condition, and some genetic conditions such as {{w|ichthyosis}} can cause them, they don't normally cause rocks or daggers to collect in people's backs.{{cn}} &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;pipes carrying iron-rich fluid&amp;quot; are the person's {{w|blood vessel}}s, as blood has a large amount of the molecule {{w|hemoglobin}}, which has iron atoms in it that help it transport oxygen. The geologists speculate that the iron {{w|Precipitation (chemistry)|precipitated}} - sedimented out - out of the blood to form the dagger, which is highly unlikely. This is the kind of geophysical process which tends to produce {{w|Vein (geology)|veins}} of minerals in actual geology, but is not generally associated with {{w|vein}}s in the human body.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;pipes carrying iron-rich fluid&amp;quot; are the person's {{w|blood vessel}}s, as blood has a large amount of the molecule {{w|hemoglobin}}, which has iron atoms in it that help it transport oxygen. The geologists speculate that the iron {{w|Precipitation (chemistry)|precipitated}} - sedimented out - out of the blood to form the dagger, which is highly unlikely. This is the kind of geophysical process which tends to produce {{w|Vein (geology)|veins}} of minerals in actual geology, but is not generally associated with {{w|vein}}s in the human body&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. Notably, the &amp;quot;{{w|Great Oxygenation Event}}&amp;quot;, when oxygen-producing organisms first created an oxidizing environment on Earth, resulted in dense precipitation of iron-rich compounds in the oceans. However, metallic iron was not created; even the environment before the Great Oxygenation Event wasn't reducing enough to create metallic iron&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>BunsenH</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381029&amp;oldid=prev</id>
		<title>DKMell: capitalization</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381029&amp;oldid=prev"/>
				<updated>2025-07-09T01:36:30Z</updated>
		
		<summary type="html">&lt;p&gt;capitalization&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 01:36, 9 July 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l17&quot; &gt;Line 17:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 17:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;iron-rich intrusion in his back&amp;quot; refers to the dagger that presumably killed him. An {{w|intrusion}} is rock formed when {{w|magma}} slowly cools below ground, and the geologists are speculating that the dagger formed after steel flowed into place in and on the body (and somehow became dagger-shaped). The dagger is &amp;quot;iron-rich&amp;quot; because it's made of steel, which is composed largely of iron.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;iron-rich intrusion in his back&amp;quot; refers to the dagger that presumably killed him. An {{w|intrusion}} is rock formed when {{w|magma}} slowly cools below ground, and the geologists are speculating that the dagger formed after steel flowed into place in and on the body (and somehow became dagger-shaped). The dagger is &amp;quot;iron-rich&amp;quot; because it's made of steel, which is composed largely of iron.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;{{w|Clastic rock|Clastic}}&amp;quot; refers to rock made up of broken pieces of older rocks. In this case it would suggest that a {{w|rift}} - a gap or fissure - opened up in the person's back and the dagger fell in. Having long linear gaps appear is something that happens to the Earth's crust, and can lead to clastic rock when other rock is swept into the gap. While {{w|&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Skin &lt;/del&gt;fissure}}s are a real condition, and some genetic conditions such as {{w|&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Ichthyosis&lt;/del&gt;}} can cause them, they don't normally cause rocks to collect in people's backs.{{cn}} &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;{{w|Clastic rock|Clastic}}&amp;quot; refers to rock made up of broken pieces of older rocks. In this case it would suggest that a {{w|rift}} - a gap or fissure - opened up in the person's back and the dagger fell in. Having long linear gaps appear is something that happens to the Earth's crust, and can lead to clastic rock when other rock is swept into the gap. While {{w|&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;skin &lt;/ins&gt;fissure}}s are a real condition, and some genetic conditions such as {{w|&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;ichthyosis&lt;/ins&gt;}} can cause them, they don't normally cause rocks &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;or daggers &lt;/ins&gt;to collect in people's backs.{{cn}} &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;pipes carrying iron-rich fluid&amp;quot; are the person's {{w|blood vessel}}s, as blood has a large amount of the molecule {{w|hemoglobin}}, which &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;notably &lt;/del&gt;has &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;some &lt;/del&gt;iron atoms in it that help it transport oxygen. The geologists speculate that the iron {{w|Precipitation (chemistry)|precipitated}} - sedimented out - out of the blood to form the dagger, which is highly unlikely. This is the kind of geophysical process which tends to produce {{w|Vein (geology)|veins}} of minerals in actual geology, but is not generally associated with {{w|vein}}s in the human body.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;pipes carrying iron-rich fluid&amp;quot; are the person's {{w|blood vessel}}s, as blood has a large amount of the molecule {{w|hemoglobin}}, which has iron atoms in it that help it transport oxygen. The geologists speculate that the iron {{w|Precipitation (chemistry)|precipitated}} - sedimented out - out of the blood to form the dagger, which is highly unlikely. This is the kind of geophysical process which tends to produce {{w|Vein (geology)|veins}} of minerals in actual geology, but is not generally associated with {{w|vein}}s in the human body.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>DKMell</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381026&amp;oldid=prev</id>
		<title>DKMell: removed Great Oxygenation Event, as it has nothing to do with this comic</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381026&amp;oldid=prev"/>
				<updated>2025-07-08T21:22:29Z</updated>
		
		<summary type="html">&lt;p&gt;removed Great Oxygenation Event, as it has nothing to do with this comic&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 21:22, 8 July 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l19&quot; &gt;Line 19:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 19:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;{{w|Clastic rock|Clastic}}&amp;quot; refers to rock made up of broken pieces of older rocks. In this case it would suggest that a {{w|rift}} - a gap or fissure - opened up in the person's back and the dagger fell in. Having long linear gaps appear is something that happens to the Earth's crust, and can lead to clastic rock when other rock is swept into the gap. While {{w|Skin fissure}}s are a real condition, and some genetic conditions such as {{w|Ichthyosis}} can cause them, they don't normally cause rocks to collect in people's backs.{{cn}} &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;{{w|Clastic rock|Clastic}}&amp;quot; refers to rock made up of broken pieces of older rocks. In this case it would suggest that a {{w|rift}} - a gap or fissure - opened up in the person's back and the dagger fell in. Having long linear gaps appear is something that happens to the Earth's crust, and can lead to clastic rock when other rock is swept into the gap. While {{w|Skin fissure}}s are a real condition, and some genetic conditions such as {{w|Ichthyosis}} can cause them, they don't normally cause rocks to collect in people's backs.{{cn}} &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;pipes carrying iron-rich fluid&amp;quot; are the person's {{w|blood vessel}}s, as blood has a large amount of the molecule {{w|hemoglobin}}, which notably has some iron atoms in it that help it transport oxygen. The geologists speculate that the iron {{w|Precipitation (chemistry)|precipitated}} - sedimented out - out of the blood to form the dagger, which is highly unlikely. This is the kind of geophysical process which tends to produce {{w|Vein (geology)|veins}} of minerals in actual geology, but is not generally associated with {{w|vein}}s in the human body&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;. Notably, the &amp;quot;{{w|Great Oxygenation Event}}&amp;quot;, when oxygen-producing organisms first created an oxidizing environment on Earth, resulted in dense precipitation of iron-rich compounds in the oceans. However, metallic iron was not created; even the environment before the Great Oxygenation Event wasn't reducing enough to create metallic iron&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;pipes carrying iron-rich fluid&amp;quot; are the person's {{w|blood vessel}}s, as blood has a large amount of the molecule {{w|hemoglobin}}, which notably has some iron atoms in it that help it transport oxygen. The geologists speculate that the iron {{w|Precipitation (chemistry)|precipitated}} - sedimented out - out of the blood to form the dagger, which is highly unlikely. This is the kind of geophysical process which tends to produce {{w|Vein (geology)|veins}} of minerals in actual geology, but is not generally associated with {{w|vein}}s in the human body.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>DKMell</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381023&amp;oldid=prev</id>
		<title>92.23.2.228: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381023&amp;oldid=prev"/>
				<updated>2025-07-08T20:54:50Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 20:54, 8 July 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l11&quot; &gt;Line 11:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 11:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|This page was created by an IRON-RICH BOT. Don't remove this notice too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|This page was created by an IRON-RICH BOT. Don't remove this notice too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Someone has been stabbed to death and two {{w|geology|geologists}} are examining the corpse. However, rather than using {{w&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;|Forensic_science&lt;/del&gt;|forensic &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;techniques&lt;/del&gt;}} that might be typical for investigating a murder, they inappropriately apply geological analyses, leading to some unlikely suggestions about what occurred.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Someone has been stabbed to death and two {{w|geology|geologists}} are examining the corpse. However, rather than using {{w|forensic &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;science&lt;/ins&gt;}} &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;techniques &lt;/ins&gt;that might be typical for investigating a murder, they inappropriately apply geological analyses, leading to some unlikely suggestions about what occurred.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Firstly, they note that the victim is lying &amp;quot;uncoNforMably&amp;quot; (not &amp;quot;uncoMforTably&amp;quot;) on the bench. An {{w|unconformity}} in geology is a gap of missing strata between an upper and lower layer, in this case implying that there is missing information about how the man came to be lying on the bench, or referring to the discontinuity between the material of the bench and that of the body with its clothing.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Firstly, they note that the victim is lying &amp;quot;uncoNforMably&amp;quot; (not &amp;quot;uncoMforTably&amp;quot;) on the bench. An {{w|unconformity}} in geology is a gap of missing strata between an upper and lower layer, in this case implying that there is missing information about how the man came to be lying on the bench, or referring to the discontinuity between the material of the bench and that of the body with its clothing.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l19&quot; &gt;Line 19:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 19:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;{{w|Clastic rock|Clastic}}&amp;quot; refers to rock made up of broken pieces of older rocks. In this case it would suggest that a {{w|rift}} - a gap or fissure - opened up in the person's back and the dagger fell in. Having long linear gaps appear is something that happens to the Earth's crust, and can lead to clastic rock when other rock is swept into the gap. While {{w|Skin fissure}}s are a real condition, and some genetic conditions such as {{w|Ichthyosis}} can cause them, they don't normally cause rocks to collect in people's backs.{{cn}} &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;{{w|Clastic rock|Clastic}}&amp;quot; refers to rock made up of broken pieces of older rocks. In this case it would suggest that a {{w|rift}} - a gap or fissure - opened up in the person's back and the dagger fell in. Having long linear gaps appear is something that happens to the Earth's crust, and can lead to clastic rock when other rock is swept into the gap. While {{w|Skin fissure}}s are a real condition, and some genetic conditions such as {{w|Ichthyosis}} can cause them, they don't normally cause rocks to collect in people's backs.{{cn}} &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;pipes carrying iron-rich fluid&amp;quot; are the person's {{w|blood vessel}}s, as blood has a large amount of the molecule {{w|hemoglobin}}, which has &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;an &lt;/del&gt;iron &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;atom &lt;/del&gt;in it &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;to &lt;/del&gt;help it transport oxygen. The geologists speculate that the iron {{w|Precipitation (chemistry)|precipitated}} - sedimented out - out of the blood to form the dagger, which is highly unlikely. This is the kind of geophysical process which tends to produce {{w|Vein (geology)|veins}} of minerals in actual geology, but is not generally associated with {{w|vein}}s in the human body. Notably, the &amp;quot;{{w|Great Oxygenation Event}}&amp;quot;, when oxygen-producing organisms first created an oxidizing environment on Earth, resulted in dense precipitation of iron-rich compounds in the oceans. However, metallic iron was not created; even the environment before the Great Oxygenation Event wasn't reducing enough to create metallic iron.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;pipes carrying iron-rich fluid&amp;quot; are the person's {{w|blood vessel}}s, as blood has a large amount of the molecule {{w|hemoglobin}}, which &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;notably &lt;/ins&gt;has &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;some &lt;/ins&gt;iron &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;atoms &lt;/ins&gt;in it &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;that &lt;/ins&gt;help it transport oxygen. The geologists speculate that the iron {{w|Precipitation (chemistry)|precipitated}} - sedimented out - out of the blood to form the dagger, which is highly unlikely. This is the kind of geophysical process which tends to produce {{w|Vein (geology)|veins}} of minerals in actual geology, but is not generally associated with {{w|vein}}s in the human body. Notably, the &amp;quot;{{w|Great Oxygenation Event}}&amp;quot;, when oxygen-producing organisms first created an oxidizing environment on Earth, resulted in dense precipitation of iron-rich compounds in the oceans. However, metallic iron was not created; even the environment before the Great Oxygenation Event wasn't reducing enough to create metallic iron.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>92.23.2.228</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381017&amp;oldid=prev</id>
		<title>64.203.66.182: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381017&amp;oldid=prev"/>
				<updated>2025-07-08T17:54:33Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 17:54, 8 July 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l17&quot; &gt;Line 17:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 17:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;iron-rich intrusion in his back&amp;quot; refers to the dagger that presumably killed him. An {{w|intrusion}} is rock formed when {{w|magma}} slowly cools below ground, and the geologists are speculating that the dagger formed after steel flowed into place in and on the body (and somehow became dagger-shaped). The dagger is &amp;quot;iron-rich&amp;quot; because it's made of steel, which is composed largely of iron.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;iron-rich intrusion in his back&amp;quot; refers to the dagger that presumably killed him. An {{w|intrusion}} is rock formed when {{w|magma}} slowly cools below ground, and the geologists are speculating that the dagger formed after steel flowed into place in and on the body (and somehow became dagger-shaped). The dagger is &amp;quot;iron-rich&amp;quot; because it's made of steel, which is composed largely of iron.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;{{w|Clastic rock|Clastic}}&amp;quot; refers to rock made up of broken pieces of older rocks. In this case it would suggest that a {{w|rift}} - a gap - opened up in the person's back and the dagger fell in. Having long linear gaps appear is something that happens to the Earth's crust, and can lead to clastic rock when other rock is swept into the gap. While {{w|Skin fissure}}s are a real condition, and some genetic conditions such as {{w|Ichthyosis}} can cause them, they don't normally cause rocks to collect in people's backs.{{cn}} &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;{{w|Clastic rock|Clastic}}&amp;quot; refers to rock made up of broken pieces of older rocks. In this case it would suggest that a {{w|rift}} - a gap &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;or fissure &lt;/ins&gt;- opened up in the person's back and the dagger fell in. Having long linear gaps appear is something that happens to the Earth's crust, and can lead to clastic rock when other rock is swept into the gap. While {{w|Skin fissure}}s are a real condition, and some genetic conditions such as {{w|Ichthyosis}} can cause them, they don't normally cause rocks to collect in people's backs.{{cn}} &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;pipes carrying iron-rich fluid&amp;quot; are the person's {{w|blood vessel}}s, as blood has a large amount of the molecule {{w|hemoglobin}}, which has an iron atom in it to help it transport oxygen. The geologists speculate that the iron {{w|Precipitation (chemistry)|precipitated}} - sedimented out - out of the blood to form the dagger, which is highly unlikely. This is the kind of geophysical process which tends to produce {{w|Vein (geology)|veins}} of minerals in actual geology, but is not generally associated with {{w|vein}}s in the human body. Notably, the &amp;quot;{{w|Great Oxygenation Event}}&amp;quot;, when oxygen-producing organisms first created an oxidizing environment on Earth, resulted in dense precipitation of iron-rich compounds in the oceans. However, metallic iron was not created; even the environment before the Great Oxygenation Event wasn't reducing enough to create metallic iron.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;pipes carrying iron-rich fluid&amp;quot; are the person's {{w|blood vessel}}s, as blood has a large amount of the molecule {{w|hemoglobin}}, which has an iron atom in it to help it transport oxygen. The geologists speculate that the iron {{w|Precipitation (chemistry)|precipitated}} - sedimented out - out of the blood to form the dagger, which is highly unlikely. This is the kind of geophysical process which tends to produce {{w|Vein (geology)|veins}} of minerals in actual geology, but is not generally associated with {{w|vein}}s in the human body. Notably, the &amp;quot;{{w|Great Oxygenation Event}}&amp;quot;, when oxygen-producing organisms first created an oxidizing environment on Earth, resulted in dense precipitation of iron-rich compounds in the oceans. However, metallic iron was not created; even the environment before the Great Oxygenation Event wasn't reducing enough to create metallic iron.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>64.203.66.182</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381016&amp;oldid=prev</id>
		<title>64.203.66.182: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3112:_Geology_Murder&amp;diff=381016&amp;oldid=prev"/>
				<updated>2025-07-08T17:54:09Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 17:54, 8 July 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l17&quot; &gt;Line 17:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 17:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;iron-rich intrusion in his back&amp;quot; refers to the dagger that presumably killed him. An {{w|intrusion}} is rock formed when {{w|magma}} slowly cools below ground, and the geologists are speculating that the dagger formed after steel flowed into place in and on the body (and somehow became dagger-shaped). The dagger is &amp;quot;iron-rich&amp;quot; because it's made of steel, which is composed largely of iron.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;iron-rich intrusion in his back&amp;quot; refers to the dagger that presumably killed him. An {{w|intrusion}} is rock formed when {{w|magma}} slowly cools below ground, and the geologists are speculating that the dagger formed after steel flowed into place in and on the body (and somehow became dagger-shaped). The dagger is &amp;quot;iron-rich&amp;quot; because it's made of steel, which is composed largely of iron.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;{{w|Clastic rock|Clastic}}&amp;quot; refers to rock made up of broken pieces of older rocks. In this case it would suggest that a {{w|rift}} - a gap - opened up in the person's back and the dagger fell in. Having long linear gaps appear is something that happens to the Earth's crust, and can lead to clastic rock when other rock is swept into the gap. While {{w|Skin &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Fissure&lt;/del&gt;}}s are a real condition, and some genetic conditions such as {{w|Ichthyosis}} can cause them, they don't normally cause rocks to collect in people's backs.{{cn}} &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;{{w|Clastic rock|Clastic}}&amp;quot; refers to rock made up of broken pieces of older rocks. In this case it would suggest that a {{w|rift}} - a gap - opened up in the person's back and the dagger fell in. Having long linear gaps appear is something that happens to the Earth's crust, and can lead to clastic rock when other rock is swept into the gap. While {{w|Skin &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;fissure&lt;/ins&gt;}}s are a real condition, and some genetic conditions such as {{w|Ichthyosis}} can cause them, they don't normally cause rocks to collect in people's backs.{{cn}} &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;pipes carrying iron-rich fluid&amp;quot; are the person's {{w|blood vessel}}s, as blood has a large amount of the molecule {{w|hemoglobin}}, which has an iron atom in it to help it transport oxygen. The geologists speculate that the iron {{w|Precipitation (chemistry)|precipitated}} - sedimented out - out of the blood to form the dagger, which is highly unlikely. This is the kind of geophysical process which tends to produce {{w|Vein (geology)|veins}} of minerals in actual geology, but is not generally associated with {{w|vein}}s in the human body. Notably, the &amp;quot;{{w|Great Oxygenation Event}}&amp;quot;, when oxygen-producing organisms first created an oxidizing environment on Earth, resulted in dense precipitation of iron-rich compounds in the oceans. However, metallic iron was not created; even the environment before the Great Oxygenation Event wasn't reducing enough to create metallic iron.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;quot;pipes carrying iron-rich fluid&amp;quot; are the person's {{w|blood vessel}}s, as blood has a large amount of the molecule {{w|hemoglobin}}, which has an iron atom in it to help it transport oxygen. The geologists speculate that the iron {{w|Precipitation (chemistry)|precipitated}} - sedimented out - out of the blood to form the dagger, which is highly unlikely. This is the kind of geophysical process which tends to produce {{w|Vein (geology)|veins}} of minerals in actual geology, but is not generally associated with {{w|vein}}s in the human body. Notably, the &amp;quot;{{w|Great Oxygenation Event}}&amp;quot;, when oxygen-producing organisms first created an oxidizing environment on Earth, resulted in dense precipitation of iron-rich compounds in the oceans. However, metallic iron was not created; even the environment before the Great Oxygenation Event wasn't reducing enough to create metallic iron.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>64.203.66.182</name></author>	</entry>

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