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  E-mail Message: I thought you might be interested in this item at http://www.worldcat.org/oclc/4434434112 Title: Geological implications of impacts of large asteroids and comets on the earth Publisher: United States Geological Society of America,Boulder, CO, USA 1982 Jan 01 OCLC:4434434112

  
  

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Geological implications of impacts of large asteroids and comets on the earth

Author:	L T Silver; P H Schultz
Publisher:	United States Geological Society of America,Boulder, CO, USA 1982 Jan 01
Edition/Format:	Book : English
Database:	SciTech Connect
Summary:	The present conference discusses such topics as large object fluxes in near-earth space and the probabilities of terrestrial impacts, the geological record of impacts, dynamics modeling for large body impacts on continents and oceans, physical, chemical, and biological models of large impacts atmospheric effects, dispersed impact ejecta and their signatures, general considerations concerning mass biological extinctions, the Cretaceous/Tertiary boundary event, geochemical signatures in the stratigraphic record, and other phanerozoic events. Attention is given to terrestrial impact rates for long- and short-period comets, estimates of crater size for large body impact, a first-order estimate of shock heating and vaporization in oceanic impacts, atmospheric effects in the first few minutes after an impact, a feasibility test for biogeographic extinction, and the planktonic and dinosaur extinctions.  Read more...
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