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Moments attenuation: Fossils indicate the day of the asteroid destroyed Earth


This Tuesday, August 15, 2017 file photo shows a model of a Tyrannosaurus rex on display at the New Mexico Museum of Natural History and Science in Albuquerque, Nm. (AP Photo / Susan Montoya Bryan)

It was a day that almost all life on Earth became extinct, including the dinosaurs.

Washington – A new study released Friday captures fossilized snapshot of the day about 66 million years ago when an asteroid gave ground, the fire was rain from the sky and the earth shook worse than any modern earthquake.

It was a day that almost all life on Earth became extinct, including the dinosaurs.

Researchers say they have found proof in North Dakota with the asteroid hit in Mexico, including fish from the hot glass in the gills with flaming debris that fell asleep back on Earth. They also reported the discovery of charred trees, indicating that an inland tsunami and melted amber.

Separately, the University of Amsterdam Ian Smith said that he and his colleagues even found a dinosaur steps from shortly before their death.

Smit said that the traces – one of herbivore hadrosaur, and the other with a carnivore, can be a small Tyrannosaurus Rex – is "significant evidence that the dinosaurs were alive and well at the moment of impact … They are running around, chasing each other" if they They were inundated.

"This is a fatal blow remains at one particular place. It's just exciting, "said Purdue University geophysicist and influence expert Jay Melosh, who was not part of the study, but the edited document released Friday in the journal Proceedings of the National Academy of Sciences.

Melosh called this field "discovery of the century." But other experts say that while some of the work exciting, they have some serious & # 39; serious concerns about the study, including the lack of access to this particular Formation of fossil site Hell Creek outside scientists, Hell Creek – which covers Montana, Dakota and Wyoming – a fossil treasure that includes many species of dinosaurs, mammals, reptiles and fish, captured in clay and stone from 65 to 70 million years ago.

Kirk Johnson, director of the Smithsonian National Museum of Natural History, who also studied Hell Creek area for 38 years, said that the work on fish, glass and wood "show some details of what happened that day. This is all very interesting and very real material. "But Johnson said that since there is limited access to the site, other scientists could not confirm the study. Smit said that the restrictions were to protect the site from poachers.

Johnson also expressed concern at the statements made by the main author, Robert DePalma, Kansas University doctoral student who with a & # 39 appeared in an article in the New Yorker magazine published on Friday, but not in the scientific work. DePalma did not return e-mail or phone message seeking comment.

For decades, a massive asteroid crash that caused the Chicxulub crater in the Yucatan peninsula in Mexico was considered the probable cause of a mass extinction is often called «KT boundary" to separate between two geologic time periods. But some scholars insisted that the massive volcanic activity played a role. Johnson and Melosh said that it helps to show the asteroid crash case.

There were only a few dinosaur fossils since then, but the steps & # 39 are the most compelling, Smith said.

It was more than the dinosaurs, he said. The site includes nests, wasp nests, gentle preserved letters and fish that have been caught in the act of death. He said that shortly after the fish die they get bloated bellies and these fossils do not show swelling.

The researchers note that the internal tsunami points to a major earthquake generated by an asteroid crash, somewhere between the size of 10 and 11. This is more than 350 times stronger than in 1906 San Francisco earthquake.

Melosh Perd & # 39; Yu said as he read a study, he went on to say: "Wow, wow, that this discovery."

Details coming out of this with a & # 39 are "stunning," he said.

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