What Was the Initial O-Isotope Composition of Water Accreted by the CM Chondrites?

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Suttle M. D.*

METSOC 2026 abstract (PDF)

“Numerical modelling (O-isotope perspective) shows CM chondrite alteration is best explained by isotopically light, TFL-like water (δ18O <30‰), moderate W/R (0.3-0.7), progressive heating (20-100°C), and pulsed dissolution. A surprising result!”

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