Publication Date:
2019-06-28
Description:
The content of trace elements (siderophile Co, Au, As, Sb, Ga; chalcophile/mobile Se, Te, Bi, In, Ag, Zn, Tl, Cd; lithophile Rb, Cs, U) is investigated to ascertain whether the meteorite is of lunar origin. Five elements reflect lunar crustal processes, whereas the remaining 11 siderophile and mobile elements suggest 1.4 + or - 0.5 percent micrometeorite admixture or enrichment by thermal redistribution on the moon. It is found that the impact launching of ALH A81005 to the earth was not attended by substantial shock loading. A Martian origin for severely shocked SNC meteorites is therefore considered plausible.
Keywords:
LUNAR AND PLANETARY EXPLORATION
Type:
Geophysical Research Letters (ISSN 0094-8276); 10; Sept
Format:
text
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