PubMed · 12543970
A nebular origin for chondritic fine-grained phyllosilicates.
Abstract
Hydrated minerals occur in accretionary rims around chondrules in CM chondrites. Previous models suggested that these phyllosilicates did not form by gas-solid reactions in the canonical solar nebula. We propose that chondrule-forming shock waves in icy regions of the nebula produced conditions that allowed rapid mineral hydration. The time scales for phyllosilicate formation are similar to the time it takes for a shocked system to cool from the temperature of phyllosilicate stability to that of water ice condensation. This scenario allows for simultaneous formation of chondrules and their fine-grained accretionary rims.
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Fred J Ciesla, Dante S Lauretta, Barbara A Cohen, Lon L Hood. 2003-01-24. A nebular origin for chondritic fine-grained phyllosilicates.. https://doi.org/10.1126/science.1079427
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