Mathematics – Probability
Scientific paper
Apr 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990e%26psl..98...90j&link_type=abstract
Earth and Planetary Science Letters (ISSN 0012-821X), vol. 98, no. 1, April 1990, p. 90-108.
Mathematics
Probability
11
Anorthosite, Apollo 14 Flight, Breccia, Lunar Rocks, Regolith, Apollo 16 Flight, Geochemistry, Lithology, Lunar Crust, Lunar Soil, Moon, Regolith, Breccia, Anorthosite, Highlands, Samples, Lunar, Data, Crust, Apollo Missions, Fra Mauro, Laboratory Studies, 14076, Analysis, Description, Compositon, Photographs, Photomicrographs, Procedure, 10028, Elements, Concentration, Apollo 14 Mission, Apollo 16 Mission, Comparisons, Landing Sites, Maturity, Aluminum, Magnesium, Hypotheses, Origin, Formation
Scientific paper
Bulk compositions of 21 Apollo regolith breccias were determined using an INAA procedure modified from that of Kallemeyn et al. (1989). With one major exception, namely, the 14076,1 sample, the regolith breccias analyzed were found to be not significantly different from the surfaces from which they were collected. In contrast, the 14076,1 sample from the Fra Mauro (Apollo 14) region is a highly anorthositic regolith breccia from a site where anorthosites are extremely scarce. The sample's composition resembles soils from the Descartes (Apollo 16) highlands. However, the low statistical probability for long-distance horizontal transport by impact cratering, together with the relatively high contents of imcompatible elements in 14076,1 suggest that this regolith breccia originated within a few hundred kilometers of the Apollo 14 site. Its compositional resemblance to ferroan anorthosite strengthens the hypothesis that ferroan anorthosite originated as the flotation crust of a global magmasphere.
Jerde Eric A.
Morris Richard V.
Warren Harry P.
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