Scientists Discover New Evidence of the Asteroid That Killed Off the Dinosaurs | WSJ.com

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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

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…

Sorgente: WSJ.com

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