Mineralogy and microstructures of shock-induced melt veins in the Tenham (L6) chondrite

Details Mineralogy and microstructures of shock-induced melt veins in the Tenham (L6) chondrite Mineralogy and microstructures of shock-induced melt veins in the Tenham (L6) chondrite

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28.1283s&link_type=abstract

Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. 283.

Other

Chondrites, Mineralogy, Metamorphism (Geology), Crystallization, Microstructure, Meteoritic Composition, Transmission Electron Microscopy, Melting, Thermal Shock, Scanning Electron Microscopy

Scientific paper

TEM is used to characterize the melt-vein assemblage in the Tenham L6 chondrite to determine if the mineralogy and microstructures are similar to those in Sixangkou. Backscatter electron imaging images obtained with the field emission SEM clearly resolve the majorite(ss) garnets and other phases in the matrix. It is inferred that the temperature gradients at the melt vein margins, in the present case between melt and maskelynitelike material, must have been very high during shock, and that there was enough time for heat transport, probably by conduction, on a length scale of 20 to 40 microns under high pressure and temperature conditions.

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