The search for possible source craters for Martian meteorite ALH84001

Details The search for possible source craters for Martian meteorite ALH84001 The search for possible source craters for Martian meteorite ALH84001

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28...65b&link_type=abstract

Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. .65.

Mathematics

Logic

Mars Craters, Meteoritic Composition, Crystallization, Planetary Crusts, Photogeology, Hypervelocity Impact, Mathematical Models, Southern Hemisphere, Planetary Geology

Scientific paper

ALH84001 is the only Martian meteorite currently known with a crystallization age of 4.5 Ga. This ancient age indicates the meteorite must come from the ancient crust of Mars, located primarily in the southern hemisphere of the planet. The 4.56-Ga crystallization age, the 16-Ma ejection, and theoretical models of how material is ejected off Mars were used to identify possible source craters for ALH84001. Eight craters remain from the initial search and subsequent photogeologic analysis, with two craters being the best candidates. One crater is 11.3 x 9.0 km in size and is located east of Hesperia Planitia at 11.7 deg S 243.3 deg W. The second crater is 22.9 x 14.6 km, located south of the Schiaparelli impact basin at 14.0 deg S 343.5 deg W.

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