Basalts dredged from the northeastern Pacific Ocean

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Volcanic rocks dredged from seamounts, fault ridges, and other major geological features of the northeast Pacific Ocean include a wide variety of basalts. Most of these are vesicular, porphyritic types with near analogues in the Hawaiian and other oceanic islands. in addition, aluminous basalts and diabasic tholeiites impoverished in potassium also occur. There is no simple correlation of composition, degree of oxidation, vesiculation, or hydration of these basalts with texture, or depth of dredge site. Most samples appear to have been extruded at much shallower depths than those now pertaining at the dredge site. the distribution of these basalts suggests that the andesite line coincides with or lies on the continent side of the foot of the continental slope.
Publication type Article
Publication Subtype Journal Article
Title Basalts dredged from the northeastern Pacific Ocean
Series title Science
Volume 140
Issue 3573
Year Published 1963
Language English
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Science
First page 1321
Last page 1324
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