The Briefing Room

General Category => Science, Technology and Knowledge => Archaeology => Topic started by: corbe on September 15, 2019, 06:56:12 pm

Title: Details Discovered About the Day the Dinosaurs Died
Post by: corbe on September 15, 2019, 06:56:12 pm

Details Discovered About the Day the Dinosaurs Died

Robert Lee Hotz
 
6 hrs ago
 
(http://img-s-msn-com.akamaized.net/tenant/amp/entityid/AAH2RzC.img?h=545&w=799&m=6&q=60&o=f&l=f&x=497&y=521) 
Workers loaded supplies on the platform in the Gulf of Mexico that explored the crater from an ancient asteroid. © Ronaldo Schemidt/Agence France-Presse/Getty ImagesWorkers

Drilling into the seafloor off Mexico, scientists have extracted a unique geologic record of the single worst day in the history of life on Earth, when a city-sized asteroid smashed into the planet 65 million years ago, wiping out the dinosaurs and three-quarters of all other life.

Their analysis of these new rock samples from the Chicxulub crater, made public Monday, reveals a parfait of debris deposited in layers almost minute-by-minute at the heart of the impact during the first day of a global catastrophe. It records traces of the explosive melting, massive earthquakes, tsunamis, landslides and wildfires as the immense asteroid blasted a hole 100 miles wide and 12 miles deep, the scientists said.

The sediments also offer chemical evidence that the cataclysm blew hundreds of billions of tons of sulfur from pulverized ocean rock into the atmosphere, triggering a global winter in which temperatures world-wide dropped by as much as 30 degrees Fahrenheit for decades, the scientists said.

“It tells us what went on inside the crater on that day of doom that killed the dinosaurs,” said Jay Melosh, a geophysicist at Purdue University who studies impact craters and wasn’t a member of the drilling team. “All of this mayhem is directly recorded in the core.”

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http://www.msn.com/en-us/news/technology/details-discovered-about-the-day-the-dinosaurs-died/ar-AAH31aq?ocid=ientp (http://www.msn.com/en-us/news/technology/details-discovered-about-the-day-the-dinosaurs-died/ar-AAH31aq?ocid=ientp)

Title: Re: Details Discovered About the Day the Dinosaurs Died
Post by: Bigun on September 15, 2019, 07:00:00 pm

Interesting stuff @corbe. Thanks.

Title: Re: Details Discovered About the Day the Dinosaurs Died
Post by: corbe on September 15, 2019, 07:12:01 pm

   Always a Pleasure, @Bigun

Title: Re: Details Discovered About the Day the Dinosaurs Died
Post by: Wingnut on September 15, 2019, 07:20:55 pm

Don't believe it.  Just fake news.

This is why:

(https://i.pinimg.com/originals/6a/87/1a/6a871af3a7754a3ac7f1b2c11e4054bb.jpg)