Venus: Timing and rates of geologic activity

Details Venus: Timing and rates of geologic activity Venus: Timing and rates of geologic activity

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002geo....30.1015b&link_type=abstract

Geology, vol. 30, Issue 11, p.1015

Mathematics

Logic

28

Scientific paper

We employ the accumulation of the impact-crater population as a geochronometer to examine the observable record of the history of Venus (<1 b.y), analyzing age relationships between craters and the different geologic units. We show that the earlier suite of units (from heavily deformed tesserae through slightly deformed regional plains) occurred during a time period an order of magnitude shorter than the subsequent period (from the end of emplacement of the wrinkle-ridge network until the present). These results imply high global rates of endogenic (volcanic) activity during the first era (comparable to that of mid-oceanic-ridge volcanism of Earth) and much lower global rates of endogenic activity (by two orders of magnitude) for the second period.

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