Computer Science
Scientific paper
Oct 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986gecoa..50.2303s&link_type=abstract
Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 50, Oct. 1986, p. 2303-2319. SNSF-supported research.
Computer Science
35
Basalt, Earth Mantle, Geochemistry, Metals, Hafnium Isotopes, Hawaii, Lead Isotopes, Neodymium Isotopes, Strontium Isotopes
Scientific paper
The isotopic Pb, Sr, Nd, and Hf compositions of rocks from nine Hawaiian volcanos are determined using the analytical procedures described by Tatsumoto and Unruh (1976) and Patchett and Tatsumoto (1980). The results are presented in graphs, tables, and maps and characterized in detail. The mantle plume, the oceanic lithosphere, and the depleted mantle are identified as distinct sources of the Hawaiian basalts, with different mechanisms responsible for the formation of shield-building tholeiites, late-stage alkalic rocks, and posterosional basalts. The uniqueness of the Hawaiian basalts and the possibility that the Koolau end member represents an undepleted 'primitive' mantle reservoir are considered.
Stille Peter
Tatsumoto Mitsonobu
Unruh Daniel M.
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