Geological implications of impacts of large asteroids and comets on the earthThe 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.
Document ID
19840042864
Acquisition Source
Legacy CDMS
Document Type
Other - Collected Works
Authors
Silver, L. T. (California Institute of Technology Pasadena, CA, United States)
Schultz, P. H. (Lunar and Planetary Institute Houston, TX, United States)