abu afak
ALLAH SNACKBAR!
- Mar 3, 2006
- 7,979
- 2,772
- 315
This was generally accepted, then some doubts/different opinions..
Now it's back more solid than ever on the old C-T boundary
Scientists Discover New Evidence of the Asteroid That Killed Off the Dinosaurs
New rock samples in Mexico show how a city-sized asteroid wiped out dinosaurs 65 million years ago
Sept. 9, 2019 - Wall Street Journal
Scientists Discover New Evidence of the Asteroid That Killed Off the Dinosaurs
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.
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Now it's back more solid than ever on the old C-T boundary
Scientists Discover New Evidence of the Asteroid That Killed Off the Dinosaurs
New rock samples in Mexico show how a city-sized asteroid wiped out dinosaurs 65 million years ago
Sept. 9, 2019 - Wall Street Journal
Scientists Discover New Evidence of the Asteroid That Killed Off the Dinosaurs
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.
[...............]
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