“...impact crater on Earth that formed in the last 100,000 years....” Formed.... I guess one could say that.
I have been trying to sort that one out myself.
Shouldn’t that read ‘’was formed’’?
The impact crater that was formed in China is 1.1 to 1.15 miles in diameter. Our Sunken Civ reported a few years ago on one that may have destroyed middle east civilizations a little more than 4,000 years ago. It appears to be about 2 miles wide and is in the Iraq marshes that Saddam tried to destroy. SC, time for the BOOK, and any good links to the Iraq find.
https://www.downtoearth.org.in/news/cosmic-collision-17290 [the Iraq marsh find]
Someone mentioned causes of the Younger Dryas cooling. Actually there is a whole book which discusses meteor events which may have triggered the YD around 13,000 years ago. It shows a bottom profile of Lake Michigan and proposes two meteor strikes. I think I see a third smaller one between the 2 larger ones which make it look like a giant ant. I also discovered another sign of meteors when I was reading about the First Intermediate period (of disaster) in Egypt around 4,000 years ago which was described vividly in the Ipuwer papyrus which is in Leyden. Apparently Argentina also experienced meteors (Campos del Cielo) a little more than 4,000 ya. Perhaps both the Iraq and the Argentine events were part of a group of meteors, as it appeared the North American events 13,000 ya had been.
A correction on Toba, possible typo, the crater is about 60 miles by 16 miles, but it is volcanic, not extra-terrestrial. The Tungusku explosion was apparently in the air, although a small crater is also possible. It was huge, red skys were seen in England. You may remember the recent Cheliabinsk (sp?) air explosion. Poor Russia. Actually when large Russian meteor was mentioned I first thought this was in reference to a huge crater (multi tens of miles) formed around the same time as the Chesapeake meteor which dug a 65 mile long crater running from Norfolk to Exmore on the Delmarva Peninsula. The funny little bends in some of the coastal rivers like the James were caused by that 34 million ya event. I think the Russian meteor is named something like Popigai which may have been formed as part of a multi blow event. There is also a 10 mile wide crater off the NJ coast.
The only major meteor result I have seen in person is one in Ontario, Canada, called the Sudbury. About 55 years ago we were driving through this area and I was horrified by the damage to the land that had been caused by mining and smelting and toxic deposits. Mile after mile of desolation. The link below has explanations and good maps of the area regarding the nickel and copper mining created by the impact. Second largest crater ever, mostly obliterated, after the Vredifort (sp?).
https://earthobservatory.nasa.gov/images/148844/sudbury-impact-structure