"Artist's reconstruction of Chicxulub crater soon after impact, 66 million years ago."
Nonsense.
The asteroid is estimated to be 15 kilometers across (about 8 miles) and travelling about 20 kilometers per second ( alittle more than 10 mils per second) The center of the impact crater is off shore of the Yucatan Peninsula in the Gulf of Mexico. The crater ring is about 200 km across and the part on shore is still visible.
I’m surprised these guys aren’t in government. They sure pontificate like they are.
There was also a hit that formed the actual Himalayas, the science is there for at least two hits by incoming bodies.
"Artist's reconstruction of Chicxulub crater soon after impact, 66 million years ago."
Condors evolved from hummingbirds.
Film at 11.
If all the dinosaurs died off about 65 million years ago (EocenePaleEocene/Triassic periods), then why is Barney still with us?
Inquiring minds want to know.
Yes, the Selenium layer is universal for the asteroid hit about 66 million years ago. Now whether there were two such hits is going to be debated for a while until new information comes in.
As a wise man once said in ancient Greece, “Shit happens”.
PS: My daughter and I once found a dinosaur phalange (possibly foot) bone in a Cretaceous period lake/pond formation that was right under a Paleocene formation in Landover, Md. near the Old Capital Center, now FedEx Field.
You could see a very distinct change in sharks teeth species because we only found one in the Cretaceous and at least 5-6 in the Paleocene sandy formation. The Cretaceous had both alligator and turtle bones, shells/carapaces while the Paleocene had none but the P formation had lots of fish teeth and vertebrae, including a possibly soil mix with Mosasaur teeth and vertebrae in it.
The construction workers for the then Hechinger Building had dug down through the Paleocene overlayer into the Cretaceous below (to put in deep sewer/water lines) and had placed the dug up dirt (down to at least 20 feet or more) and put them into 10-15 ft high piles. Rain washed out teeth, bones, etc, from the pile and mixed them together so that is why we found Mosasaur vertebrae and teeth among the Paleocene materials.
We found the alligator bones/scute and turtle bones/carapace in untouched Cretaceous muck about 3-4 feet between the ground’s surface but it extended down to at least 15-20 feet or more.
This was one way of confirming that something significant happened at the end of the Cretaceous and the beginning of the Paleocene eras.
Bfl!
Thanks for the great article, fascinating science.