This conflicts a wee bit with the Laurentide ice sheet.
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No it does not conflict, since the major impact site was the Laurentide ice sheet.
The “meteor” was actually many fragments of a comet - these fragments were up to a mile in diameter. Remnant effect are visible today in the Carolina Bays and the Nebraska Rainwater Basins which resulted from the giant ice shards from the impacts returning to the ground. When they hit, they shattered with ice shards slicing through tree, animals, and humans - this was how the Clovis People disappeared.
The constant bombardment caused firestorms across the North American continent, burning off 4% of Earth’s vegetation - the remains are a layer called Black Mat which is found in a roughly pear shaped zone centered on the Great Lakes region and stretching across the Atlantic, into South America and Northern Africa.
The fires cause a temperature drop, that ushered in the Younger Dryas Event which lasted a 1000 years. The other effect of the fires was a precipitous drop in Earth’s oxygen level, making it difficult to impossible for the Mega Fauna to breathe.
Well stated. Another effect the fires had was due to the sunlight being blocked as you say causing temps to drop, it also killed off a lot of flora species especially Mega Fuana depended on to survive.
Good stuff. I really like being on this list. Thanks,SC
Black Mat underlies the Sharm Al Sheikh region of Iraq and separates two phases if development toward civilization there.
And this is why in Russia they have found frozen mammoths with fresh undigested buttercup flowers in their stomachs.