2985: Craters

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Craters

Title text: It's annoying that the Nastapoka Arc isn't a meteor impact crater, but I truly believe that--with enough time, effort, and determination--we could make it one.

Explanation

This explanation may be incomplete or incorrect: Created by a LITTLE PRINCE ON A ROCK - Please change this comment when editing this page. Do NOT delete this tag too soon. If you can address this issue, please edit the page! Thanks.

This comic uses a Venn diagram to classify big holes in the ground (and Stonehenge) into meteor impact craters, "weird circles on the map", and both.

Body of water	Venn diagram section	Explanation
Northern Yucatan Peninsula	Meteor Impact Craters	This is referring to the famous Chixulub crater, where an asteroid ~10 km in diameter struck the earth 65 million years ago, causing the dinosaurs to go extinct.

Transcript

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Discussion

Delaware/Pennsylvania Arc

The Delaware/Pennsylvania arc is a circle, sure, but so is every other allegedly "straight" line on the map. The 49N parallel looks like a straight line on some projections, but a polar projection shows that it is clearly a circle around a point on the Earth's axis. The Delaware/Pennsylvania arc is only unique for NOT being aligned with the axis. 172.71.102.20 19:07, 13 September 2024 (UTC)

The "Delaware/Pennsylvania arc" has a long and juicy history. Not a circle. Twelve-Mile Circle Signed- --PRR (talk) 20:36, 13 September 2024 (UTC)

True about map projections, but the Venn section title here does say *Weird*. The Delaware/Pennsylvania arc is indeed "weird"; few other such arcs are found in regular map content, and the original story for it is indeed uncommon. Great Circle Parallel latitude "arcs" aren't weird in either way. 172.68.34.64 20:52, 13 September 2024 (UTC)

North-South lines are great-circle arcs, but non-equatorial East-West lines - as well as many diagonal ones - are minor-circle arcs (is that the right term?), just link the 12-Mile Circle. (Let's see if this retains my IP address from my top post.) 172.70.46.109 21:29, 13 September 2024 (UTC)

Right you are! 172.68.34.64 23:00, 14 September 2024 (UTC)

Great Blue Hole

There are two Great Blue Holes, one in Belize, one in Dahab, Egypt (Red Sea). 172.71.102.20 19:11, 13 September 2024 (UTC)

Recent Google Maps discovery

This may be inspired Joël Lapointe's very recently announced discovery of a 15km-diameter "pit" he found near Marsal Lake (Quebec) using Google Maps. "He saw a suspicious pit on Google Maps. Experts say it could be a crater from an ancient space rock" 172.69.64.185 20:10, 13 September 2024 (UTC)

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man, why are so many of these in Quebec? does it have a natural meteor/circle magnet? 172.68.174.232 01:11, 14 September 2024 (UTC)

The Laurentian Shield is a craton (therefore craters not deformed into unrecognisebility by tectonic action, and not hidden under thick sedimentary cover). Furthermore the ice sheets scraped off what sedimentary cover there was. 162.158.74.49 18:02, 25 September 2024 (UTC)

Parce qu'on y parle français. 172.69.71.68 12:39, 14 September 2024 (UTC)

New Column

I'm thinking about a new column or two: GPS coordinates (with an Open Earth link?) and a satellite image, or something. 172.71.102.76 03:27, 14 September 2024 (UTC)

The table seems incomplete without something like that. 172.69.34.172 22:50, 14 September 2024 (UTC)

Meta Reference: Venn Diagram Double Crater

No comment yet on the fact that the two circles in the Venn Diagram refer to craters and circles... 172.71.102.53 01:32, 15 September 2024 (UTC)

Geographic bias by meteorites or Randall?

Boy am I happy that I don't live in North or Central America, where 11 out of 13 "craters" are located... Mumiemonstret (talk) 07:44, 15 September 2024 (UTC)

Maybe over here (rightpondia, oceania, down-under and the cradle of humanity itself), we just cleaned them up easier (or messed them up badly) so they were less obvious. (c.f. Nördlingen.) Y'all over thataway, however, haven't had time to do anything too drastic to obscure them. ;) 172.70.163.48 14:10, 15 September 2024 (UTC)

Haha, yeah, that was also my first thought when I googled the places I didn't know: very America-centric by either Randall or meteorite or other circle-creating entities... And even the other 2 places are in English speaking places (yes, I know English isn't the official language of India, but still one of the most common)--Lupo (talk) 04:28, 16 September 2024 (UTC)

I am tickled pink that two significant items in my life appear adjacent in this diagram: Stonehenge, and Crater Lake. My company name is Stonehenge (and I've been to the real rock pile a few times), and I'm a native Oregonian, using Crater Lake as my video-call background. RandalSchwartz (talk) 22:02, 15 September 2024 (UTC)

Crater Lake

So we're not going to talk about Crater Lake not being an actual crater? 172.69.134.107 (talk) 22:12, 16 September 2024 (please sign your comments with ~~~~)

"Crater Lake (Klamath: Giiwas)[2] is a volcanic crater lake..." 172.70.91.2 23:48, 16 September 2024 (UTC)

no monday comic

silly randall 172.70.86.146 07:17, 17 September 2024 (UTC)

nvm 141.101.99.136 08:28, 17 September 2024 (UTC)

What's with the excessive use of headers in this chat?

Sinkholes

Kingsley Lake is located Southwest of Jacksonville, FL and directly East of Starke, FL, on the grounds of Camp Blanding. If you look at it on Google Maps, you will notice that it is pretty much perfectly round. You would think that this was a meteor impact, but in fact it is just a really large sinkhole. Camp Blanding dates back to World War II when it was being used as a training camp for the Army and also as a POW camp for captured German soldiers. Foozini (talk) 04:37, 19 September 2024 (UTC)

Meteor impact craters???

Meteors don't leave craters. Meteorites do. Just saying. --172.68.110.188 20:23, 19 September 2024 (UTC)

At what point does a meteor become a meteorite? Arguably when it (or its fragments) are found laying there. If so, while it is still undergoing lithobraking then it is still a moving meteor.

The alternative is that:

• an asteroid (or comet fragment, etc) in vacuum is an asteroid (or comet fragment, etc)
• in an atmosphere, it is a meteor (with the possibility of skimming and becoming its 'vacuum self' once more)
• in (or on) the solid surface, it is a meterorite (and permanence of this state might not be guaranteed, if dynamic)
• this begs the existence of a term that (by rapidly researching the possible back-sources) might be something like "metydor" or "metanao" that relates to such a body currently in/passing through water (the latter coming from possible alt-historic scholarly adoption and anglicisation of the similarly old Greek word for "swim", to contrast with the aerial suspension of a meteor, though the former is just "water" itself, much as the "-eor" element is related to the word that became "aerial", i.e. "of the air")... Though there might be arguments for something like "meteoretis", also, if you go down a different rabbit-hole.

Doubtless there are countless other justifiable interpretations (and alternate linguistic allocations), but these are my own main (and opposing) two. 172.70.160.231 08:40, 20 September 2024 (UTC)