INCOMING! The Chicxulub Impactor

INCOMING! The Chicxulub Impactor

by Stephanie Osborn, Darrell Osborn

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Overview

About 66 million years ago, some 80% of ALL SPECIES ON EARTH became extinct -- at the boundary between the Mesozoic and modern eras. In every occurrence of the boundary, all over the world, there was always an odd layer of clay. When the thin clay layer was found to have high levels of iridium -- an element rare on Earth's surface -- things got interesting.

Product Details

BN ID: 2940160786032
Publisher: Chromosphere Press
Publication date: 09/28/2019
Sold by: Barnes & Noble
Format: NOOK Book
Sales rank: 358,539
File size: 2 MB

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