Dinosaurs, Diamonds, and Things from Outer Space: The Great Extinction

Portada
Stanford University Press, 1995 - 241 pàgines
This text explains why most life on earth perished 65 million years ago. Intended for a broad audience, the book should also be of great interest to scientists - most of whom now agree that an object from outer space hit the earth with unimaginable force 65 million years ago. But what kind of object? Carlisle's scenario suggests that the event was a complex sequence, beginning with a nearby star turning supernova. The first effect of this on earth was the arrival of massive radiation, ten or 20 times the heat of the sun, igniting worldwide forest fires. The blast also perturbed the cloud of comets that surrounds the solar system, and some few centuries later one or more of these (loaded with interstellar diamonds) hit the earth, producing nuclear winter and causing a tremendous acidification of the oceans. Each step of this theory is backed up by evidence.
 

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Continguts

Introduction
1
The Badlands of Alberta
17
Death and Survival at the CretaceousTertiary Boundary Event
23
The CretaceousTertiary Boundary Around the World
47
The Solar System Vortices and Comets
73
Bolide Impacts and Vulcanism
94
Theories of the Periodicity of Extinctions
108
Meteors and Meteorites Shooting Stars and Fireballs
118
The Energetics of Impactors
148
Supernovae and Cometary Acceleration
157
The Search for Supernova Debris
172
A Scenario of the CretaceousTertiary Boundary Event
184
Implications for Evolution
201
Glossary
211
Readings
229
Index
233

What Hit at the CretaceousTertiary Boundary
127

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Sobre l'autor (1995)

David Brez Carlisle is Chief Scientist of Environment Canada.

Informació bibliogràfica