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Record 19 of 150
The effect of H2O and CO2 on planetary mantles
Author and Affiliation:
Wyllie, P. J.(Chicago, University, Chicago, Ill., United States)
Abstract: The peridotite-H2O-CO2 system is discussed, and it is shown that even traces of H2O and CO2, in minerals or vapor, lower mantle solidus temperatures through hundreds of degrees in comparison with the volatile-free solidus. The solidus for peridotite-H2O-CO2 is a divariant surface traversed by univariant lines that locate the intersections of subsolidus divariant surfaces for carbonation or hydration reactions occurring in the presence of H2O-CO2 mixtures. Vapor phase compositions are normally buffered to these lines, and near the buffered curve for the solidus of partly carbonated peridotite there is a temperature maximum on the peridotite-vapor solidus. Characteristics on the CO2 side of the maximum and on the H2O side of the maximum are described.
Publication Date: Jun 01, 1978
Document ID:
19780057198
(Acquired Dec 01, 1995)
Accession Number: 78A41107
Subject Category: LUNAR AND PLANETARY EXPLORATION
Document Type: Journal Article
Publication Information: Geophysical Research Letters; 5; June 197
Publisher Information: United States
Contract/Grant/Task Num: NSR-09-051-001; NSF EAR-76-20410
Financial Sponsor: NASA; United States
Organization Source: Chicago Univ.; Chicago, IL, United States
Description: 3p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: CARBON DIOXIDE; PERIDOTITE; PLANETARY MANTLES; TEMPERATURE EFFECTS; WATER VAPOR; MELTING; MINERALS; REACTION KINETICS; SOLIDUS; VAPOR PHASES
Imprint And Other Notes: Geophysical Research Letters, vol. 5, June 1978, p. 440-442.
Miscellaneous Notes: p. 440-442
Availability Source: Other Sources
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