Physics
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992tectp.216...63h&link_type=abstract
Tectonophysics, Vol. 216, No. 1/2, p. 63 - 89
Physics
23
Scientific paper
The traditional geophysical methods of magnetics and gravity, as applied to meteorite impact crater studies are shortly reviewed. Their optimal resolution power with respect to crater size and pre-existing structures is discussed. The morphology of some typical impact craters is illustrated to show the character of the post-impact deformation. A new geophysical method in impact crater studies, the in situ measurement of electrical resistivity, is introduced and illustrated with case studies from simple and complex craters. It is concluded that the resistivity method represents a useful tool for mapping the extent of authigenic brecciation in crater structures and their surroundings. The crater structures treated in this paper are: Björkö, Dellen, Siljan and Uppland, all located in Sweden.
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