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Published October 10, 1979 | Published
Journal Article Open

Chemical Stratification of the Mantle


Differentiation of the mantle results in a thick layer of basalt which cannot sink below about 670 km even after it converts to eclogite and garnetite. The mantle is therefore chemically stratified. The upper mantle stratification is possibly garnet peridotite overlying eclogite.

Additional Information

© 1979 by the American Geophysical Union. Paper number 9B0926. Received April 12, 1979; revised June 4, 1979; accepted June 18, 1979. The author acknowledges helpful discussions with Leon Silver and Frank Richter. This research was supported by NASA contract NGL05-002-069. Contribution 3240, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125.

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