Geologic history of the Mead impact basin, Venus

Details Geologic history of the Mead impact basin, Venus Geologic history of the Mead impact basin, Venus

Jan 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996geo....24...11h&link_type=abstract

Geology, vol. 24, Issue 1, p.11

Mathematics

Logic

6

Scientific paper

The geologic history of the Mead impact basin on Venus, a basin similar in size to Chicxulub (Mexico), may be a guide of what to expect from future exploration of Chicxulub. During the collapse phase of crater formation in the Mead basin, radar-bright impact melt material was deposited as a topographically flat surface within a large central area, burying the transient cavity rim and other underlying structures. The central area is not flat now and has been modified by viscous relaxation and thermal cooling effects. Substantial parts of the ejecta deposits have been covered by postimpact volcanic flows that are not obvious without the topographic data. Previous global surveys of Venusian impact craters, using only image data, may have underestimated the number of craters embayed by volcanism.

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