Low-velocity impact craters in ice and ice-saturated sand with implications for Martian crater count ages

Details Low-velocity impact craters in ice and ice-saturated sand with implications for Martian crater count ages Low-velocity impact craters in ice and ice-saturated sand with implications for Martian crater count ages

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.8023c&link_type=abstract

Journal of Geophysical Research, vol. 84, Dec. 30, 1979, p. 8023-8032.

Mathematics

Logic

16

Cratering, Ice, Mars Surface, Meteoritic Damage, Sands, Chronology, Experiment Design, Hypervelocity Impact, Surface Properties, Tensile Tests

Scientific paper

The paper reports on a series of low-velocity impact experiments performed in ice and ice-saturated sand. It is found that crater diameters in ice-saturated sand were about 2 times larger than in the same energy and velocity range in competent blocks of granite, basalt and cement, while craters in ice were 3 times larger. It is shown that if this dependence of crater size on strength persists to large hypervelocity impact craters, then surface of geologic units composed of ice or ice-saturated soil would have greater crater count ages than rocky surfaces with identical influx histories. Among the conclusions are that Martian impact crater energy versus diameter scaling may also be a function of latitude.

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