Computer Science
Scientific paper
Nov 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988e%26psl..90..297h&link_type=abstract
Earth and Planetary Science Letters (ISSN 0012-821X), vol. 90, no. 3, Nov. 18, 1988, p. 297-314.
Computer Science
506
Abundance, Earth Crust, Earth Mantle, Geochemistry, Ocean Bottom, Basalt, Lead (Metal), Mineralogy, Niobium, Radioactive Age Determination, Tantalum, Trace Elements
Scientific paper
Literature data on the overall chemistry of the continental crust and the oceanic crust (represented by MORB) were normalized to primitive mantle values and were plotted as functions of the apparent bulk partition coefficient of each element. The two abundance patterns are shown to form a simple, complementary relationship. In the continental crust, the maximum concentrations were found to be on the order of 50 to 100 times the primitive-mantle values, while in the average oceanic crust, the maximum concentrations were only about 10 times. The observed relationship is explained by a simple two-stage model of extracting first the continental, and then the oceanic crust from the initially primitive mantle.
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