EarthRef.org Reference Database (ERR) -- Hedge 1978

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Hedge 1978

Hedge, C.E. (1978). Strontium isotopes in basalts from the Pacific Ocean basin. Earth and Planetary Science Letters 38(1): 88-94.

Basalts being erupted in the Pacific Ocean Basin vary in Sr isotopic composition in a simple geographic pattern. (super 87) Sr/ (super 86) Sr increases away from the East Pacific Rise to very high values for the islands in the south-central Pacific. The (super 87) Sr/ (super 86) Sr variations are almost certainly related to past segregation of Rb, K, and other large cations. The segregation process was probably incipient partial melting which resulted in various mantle zones being enriched or depleted.

Keywords
alkali metals; alkaline earth metals; basalts; data;, differentiation; genesis; geochemistry; igneous rocks; islands;, isotopes; magmas; mantle; mathematical models; metals; ocean, basins; Pacific Ocean; partial melting; ratios; rubidium;, segregation; Sr-87/Sr-86; stable isotopes; strontium; trace, elements; upper mantle; variations; volcanic rocks, 02, Geochemistry

Journal
Earth and Planetary Science Letters
http://www.elsevier.com/wps/product/cws_home/503328

Publisher
Elsevier Science
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