Dinosaurs, Diamonds, and Things from Outer Space: The Great Extinction
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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The Badlands of Alberta
Death and Survival at the CretaceousTertiary Boundary Event
The CretaceousTertiary Boundary Around the World
The Solar System Vortices and Comets
Bolide Impacts and Vulcanism
Theories of the Periodicity of Extinctions
Meteors and Meteorites Shooting Stars and Fireballs
What Hit at the CretaceousTertiary Boundary
Altres edicions - Mostra-ho tot
abundant accelerator actually Alberta amino acids animals asteroid atmosphere atomic belt body bolide butanoic acid calculations called carbon carbonaceous cause comets contain core crater creatures Cretaceous Cretaceous-Tertiary Boundary event diamonds dimensions dinosaurs dust earth effects elements energy evidence exist extinction fact Figure formation formed fossils fragments giant groups half-life happen heat impact inner iridium iron isotopes Jupiter kilometers kind known land layer least less living mass mass extinctions material means mechanism Mesozoic metallic meteor meteorites million moving nature never object observed occur once Oort Cloud orbit organisms origin outer passing percent perhaps period perturbed planets possible present produced ratio reach record relative remains result rocks seems single solar system space species star stony suggest supernova surface Tertiary theory tion vortex wave whole zone