Effects of Thermal Alteration on the Presolar Grain Inventories of Chondritic Meteorites

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Leitner J.* Metzler K. Singerling S. A. Brenker F. E. Ott U.

METSOC 2026 abstract (PDF)

“We report the occurrence of presolar silicates and oxides in several carbonaceous and ordinary chondrites of petrologic types >3.1. Abundances range from 40 ppm to 110 ppm, possibly indicating beginning grain destruction by thermal alteration. “

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