Computer Science
Scientific paper
Mar 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28.1219r&link_type=abstract
Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. 219.
Computer Science
Chondrule, Chondrites, Petrography, Minerals, Chemical Properties, Meteoritic Composition, Igneous Rocks, Silicon Compounds, Glass, X Ray Analysis
Scientific paper
Many ordinary chondrites contain large, igneous-textured objects of obscure origin. We have studied the petrography and compositions of a representative suite (14) of the largest 'melt' objects in two thin sections and two slab surfaces of Julesberg (L3), and also the three largest melt objects in thin sections of Homestead (L5), Etter (L5), and Vishnupur (LL3-6). Our data suggest that large melt objects can be classified into two textural-chemical types: (1) Na-poor mega-chondrules and Na-poor lithic clasts, and (2) Na-rich clasts. Megachondrules and Na-poor lithic clasts probably formed in similar ways. From the Na-rich group, we studied four lithic clasts, one of which probably formed as a clast-laden impact melt of chondritic material.
Ruzicka Alex
Snyder Gregory A.
Taylor Lawrence A.
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