Petrographic and Isotopic C and O Survey of the Earliest Stages of Aqueous Alteration of CM Chondrites

Vacher L. G. * Marrocchi Y. Villeneuve J. Verdier-Paoletti M. J. Gounelle M.

80th Annual Meeting of the Meteoritical Society 2017 [#6031]


“CM Paris shows two populations of carbonates: T1a and a new T0. Their δ13C-δ18O values suggest that they precipitated from different equilibrations of 17,18O-rich water with the matrix and from variable contributions of different 12C and 13C-rich SOMs.”