Posted on 11/18/2016 9:20:25 PM PST by MtnClimber
Scientists say they can now describe in detail how the asteroid that wiped out the dinosaurs produced its huge crater.
The reconstruction of the event 66 million years ago was made possible by drilling into the remnant bowl and analysing its rocks.
These show how the space impactor made the hard surface of the planet slosh back and forth like a fluid.
At one stage, a mountain higher than Everest was thrown up before collapsing back into a smaller range of peaks.
"And this all happens on the scale of minutes, which is quite amazing," Prof Joanna Morgan from Imperial College London, UK, told BBC News.
The researchers report their account in this week's edition of Science Magazine.
Their study confirms a very dynamic, very energetic model for crater formation, and will go a long way to explaining the resulting cataclysmic environmental changes.
The debris thrown into the atmosphere likely saw the skies darken and the global climate cool for months, perhaps even years, driving many creatures into extinction, not just the dinosaurs.
The team spent May to June this year drilling a core through the so-called Chicxulub Crater, now buried under ocean sediments off Mexico's Yucatan Peninsula.
(Excerpt) Read more at bbc.com ...
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.
MtnClimber, Thank-you for having posted such intelligent information. May you life be abundant with truth and knowledge.
Actually go read the article. It is a non political thing. It is interesting that given enough force rock moves as a fluid, tho knowing a lil about stamping metal into crazy shapes I could have told them that. The interesting thing is the scale of the “stamping press” and the modeled data on the granite substructure and how gravity smoothed it out.
They are long winded for sure. I this the reason for a mass extinction? It will always be a hypothesis unless someone was there to document first hand.
There are also layers dated to the same time showing wide deposits of small spherical rock showing melting and wide dispersion around this site.
More telling still are the Trillions and trillions of Foraminifera below that line. There are virtually none above.
These formed a thick soup of living things at the base of the food chain in every ocean on earth.
Every ocean on earth.
Gone in the blink of an eye.
Gone. In. Every. Ocean. On. Earth.
The document of the asteroid hit ia written in the sedimentary layers.
The document of the asteroid hit is written in the sedimentary layers.
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."
I actually got questioned by a local at Panama City Beach on the White Sand Beaches.
Yes, I knew the answer and it was not outer spacey.
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.
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