Sm-Nd isotopic systematics and REE abundance studies of the ALH-765 eucrite

Details Sm-Nd isotopic systematics and REE abundance studies of the ALH-765 eucrite Sm-Nd isotopic systematics and REE abundance studies of the ALH-765 eucrite

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983polre..30..323n&link_type=abstract

(National Institute of Polar Research, Symposium on Antarctic Meteorites, 8th, Tokyo, Japan, Feb. 17-19, 1983) National Institut

Computer Science

2

Cosmochemistry, Meteoritic Composition, Neodymium Isotopes, Rare Earth Elements, Samarium Isotopes, Anomalies, Cerium, Mineralogy

Scientific paper

Analyses of Sm-Nd systematics and REE concentrations were carried out for the whole rock and mineral separates from the ALH-765 meteorite. A Sm-Nd age of 4.52 + or - 0.09 (2 sigma) b.y. and an initial Nd-143/Nd-144 ratio of 0.50675 + or 0.00011 (2 sigma) have been obtained. The previously reported Ce irregularities have been re-examined in this work. The large Ce anomalies and some minor Sm-Nd system disturbances observed for the meteorite may be interpreted as results of terrestrial weathering effects.

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