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Carbonate and Carbonate-Rich Liquids in the Earth's Interior, and Critical Fluids in Diamond Inclusions

Wyllie, Peter J. (1996) Carbonate and Carbonate-Rich Liquids in the Earth's Interior, and Critical Fluids in Diamond Inclusions. In: Advanced materials '96: new trends in high pressure research. National Institute for Research in Inorganic Materials , Tsukuba, Japan, pp. 69-74. ISBN 4944122012. http://resolver.caltech.edu/CaltechAUTHORS:20160411-084132822

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Abstract

The near-solidus liquid composition for peridotite-CO_2-H_2O deeper than ~65 km is dolomitic carbonatite; a coexisting vapor phase, if present, is hydrous. Carbonates, CO_2 and H_2O have been found in fluid inclusions in fibrous diamonds, with compositions corresponding to these two components, and to mixtures between them. Interpretations involving mixing or partial melting do not satisfy phase relationships. A possible explanation involves a critical endpoint on the mantle solidus, which permits diamonds growing within a relatively small mantle volume to trap fluids with compositions ranging from carbonatite liquid to dense hydrous vapor, defined by the depth-T position.


Item Type:Book Section
Additional Information:© 1996 National Institute for Research in Inorganic Materials. This research was supported by the Earth Science section of the U.S. National Science Foundation, grant EAR 92-18806.
Funders:
Funding AgencyGrant Number
NSFEAR 92-18806
Record Number:CaltechAUTHORS:20160411-084132822
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160411-084132822
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:66042
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:13 Apr 2016 18:25
Last Modified:13 Apr 2016 18:25

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