Titania and Alumina Content of Oceanic and Circumoceanic Basalt

Felix Chayes

Geophysical Laboratory, Carnegie Institution of Washington, Washington, D.C., U.S.A.

Summary: Most circumoceanic basalts contain less and most oceanic basalts considerably more than 1·75% of TiO₂. The difference of TiO₂ averages is large enough to require rejection of the hypothesis that circumoeeanie basalt results from the assimilation of sial by oceanic basalt.

Mineralogical Magazine; 1965 v. 34; no. 268; p. 126-131; DOI: 10.1180/minmag.1965.034.268.10
© 1965, The Mineralogical Society
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