Chondrule precursor aggregates in UOC's - Petrography and history

Details Chondrule precursor aggregates in UOC's - Petrography and history Chondrule precursor aggregates in UOC's - Petrography and history

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28.1207r&link_type=abstract

Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. 207.

Computer Science

6

Chondrule, Petrography, Crystallization, Pyroxenes, Olivine, Meteoritic Composition, Aggregates, Sulfides, Iron Compounds

Scientific paper

A model for the origin of chondrules based on dynamic crystallization experiments of chondrule melts proposed by Lofgren (1996) predicts a complete spectrum of melting of precursor aggregates from barely perceptible to complete. Examination of several unequilibrated ordinary chondrites from the Antarctic collection revealed the presence of fragmental aggregates comprised of clastic olivine and pyroxene varying from very fine-grained to coarse. Many fragmental aggregates contain fragments of chondrules or even whole chondrules. These aggregates show varying degrees of partial melting. Nebular rims on some confirm a nebular origin. These aggregates are remnants of the chondrule forming process, precursors caught before transformation into chondrules.

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