Mineralogic and O-isotope evolution in CM chondrites: on the non-relationship between bulk O-isotopes and degree of aqueous alteration

Howard, K. T.; Benedix, G. K.; Bland, P. A.; Gibson, J. M.; Greenwood, R. C.; Franchi, I. A. and Cressy, G. (2011). Mineralogic and O-isotope evolution in CM chondrites: on the non-relationship between bulk O-isotopes and degree of aqueous alteration. In: 42nd Lunar and Planetary Science Conference, 7-11 Mar 2011, Houston, TX, USA.

URL: http://www.lpi.usra.edu/meetings/lpsc2011/pdf/2429...

Abstract

Contrary to predictions, no obvious correlation exists between the degree of aqueous alteration defined by PSD-XRD modal mineralogy and O-isotope compositions of CM chondrites. Heterogeneous hydrous reservoirs and/or consumption of water by oxidation may explain these data.

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