Reports

Ages of Pacific Deep-Sea Basalts, and Spreading of the Sea Floor

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Science  07 Jun 1968:
Vol. 160, Issue 3832, pp. 1106-1107
DOI: 10.1126/science.160.3832.1106

Abstract

Potassium-argon determinations of age from whole-rock samples of tholeiitic basalts, dredged from the crest of the East Pacific Rise and from the flanks of three seamounts at varying distances from the crest, show that the crest is younger than 1 million years and that age does not correlate with distance from the crest. Our data, however, do not necessarily oppose the general concept of spreading of the ocean floor.