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The Cretaceous/Tertiary Boundary Interval, Raton Basin

The Cretaceous/Tertiary Boundary Interval, Raton Basin

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Full Title: The Cretaceous/Tertiary Boundary Interval, Raton Basin, Colorado and New Mexico and Its Content of Shock-Metamorphosed Minerals; Evidence Relevant to the K/T Boundary Impact-Extinction Theory

Author: Glen A. Izett


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The author presents a new perspective on the continuing discussion of the K/T boundary impact-extinction theory. Examining about 20 sites in the Raton basin of Colorado and New Mexico and another 10 in Wyoming, Montana, and Western Canada, he uses detailed analyses of shock-metamorphosed minerals to conclude that the K/T boundary in the western interior of North America was, indeed, the site of an impact, but by an asteroid of much smaller diameter than previously estimated. He also suggests that there were no major high-energy depositional events associated with the impact and proposes the place of the impact. This small, important volume is certain to stimulate further discussion and research.

[ Table of Contents ]

Published: 8/20/1990

ISBN Number: 0813722497

Pages: 100

Product Category: Special Papers