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Impact cratering at geologic stage boundariesThe largest known Cenozoic impact craters with the most accurately measured ages are found to correlate very closely with geologic stage boundaries. The level of confidence in this result is 98-99 percent even under the most pessimistic assumptions concerning dating errors. One or more large impacts may have led, in at least some cases, to the extinctions and first appearances of biotic species that mark many of the geologic stage boundaries.
Document ID
19930056981
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Stothers, Richard B.
(NASA Goddard Institute for Space Space Studies New York, United States)
Date Acquired
August 16, 2013
Publication Date
May 21, 1993
Publication Information
Publication: Geophysical Research Letters
Volume: 20
Issue: 10
ISSN: 0094-8276
Subject Category
Geophysics
Accession Number
93A40978
Distribution Limits
Public
Copyright
Other

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