Redistribution of Trace Elements During Metamorphism of Ordinary Chondrites

Details Redistribution of Trace Elements During Metamorphism of Ordinary Chondrites Redistribution of Trace Elements During Metamorphism of Ordinary Chondrites

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..329e&link_type=abstract

Lunar and Planetary Science, volume 27, page 329

Mathematics

Logic

1

Chondrites: Ordinary, Lithophiles: Refractory, Metamorphism, Siderophiles: Refractory, Trace Elements: Redistribution

Scientific paper

In ordinary chondrites, contents of volatile elements, e.g., carbon and noble gases, are known to be variable; their contents decrease with increasing of petrologic types. Indeed, the bulk contents of these volatiles were proposed as parameters usable for the subclassification of unequilibrated ordinary chondrites (UOCs). In contrast, the bulk contents of refractory elements are highly uniform in chondritic meteorites, regardless of their chemical and petrological groups. In this study, we traced the distribution trends of refractory trace elements in UOCs and EOCs, and attempted to characterize the metamorphism of ordinary chondrites based on the distribution of trace elements in constituent minerals in chondrites. Mo and W were focused as refractory siderophiles, and REEs, Th and U were focused as refractory lithophiles.

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