Siderophile Elements in Lunar Impact Melts Define Nature of the Impactors

Details Siderophile Elements in Lunar Impact Melts Define Nature of the Impactors Siderophile Elements in Lunar Impact Melts Define Nature of the Impactors

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..603j&link_type=abstract

Lunar and Planetary Science, volume 27, page 603

Computer Science

7

Basins: Impactors, Chondrites: Eh, Elements: Siderophile, Melt Rocks: Lunar, Meteorites: Iab Iron

Scientific paper

This paper reports results in a continuing study of published siderophile-element data for lunar rocks. The current emphasis is study of melt rocks thought to have been generated by the impacts that formed the largest lunar craters and the basins, to try to determine compositions of the impactors. This paper extends last year's study of lunar melt rocks by correcting the data for indigenous Ni, analyzing a much larger data set of lunar samples and meteorites, and evaluating effects of volatility of Au and Ge. The results support the conclusions of last year's study--the Apollo 16 impactors were IAB irons (or asteroids containing IAB iron), the Apollo 14 and 15 impactors were probably similar, and the Apollo 17 impactor was an EH chondrite.

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