GEOCHEMICAL JOURNAL
Online ISSN : 1880-5973
Print ISSN : 0016-7002
ISSN-L : 0016-7002
Excess crustal calcium problem
Ricardo M. Pytkowicz
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1979 年 13 巻 1 号 p. 15-17

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RONOV and YAROSHEVSKY (1969) observed the abnormally high calcium content of the earth crust and LOWENGART (1975) explained it as resulting from exchange between oceanic magnesium and mantle calcium. An alternate explanation is presented, namely, that the excess calcium results from the conversion of plagioclase feldspars into carbonates.
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© Geochemical Society of Japan
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