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Science 15 May 1970:
Vol. 168. no. 3933, pp. 817 - 820
DOI: 10.1126/science.168.3933.817
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Layered Basic Complex in Oceanic Crust, Romanche Fracture, Equatorial Atlantic Ocean

William G. Melson 1 and Geoffrey Thompson 2

1 Smithsonian Institution, Washington, D.C. 20560
2 Woods Hole Oceanographic Institution, woods Hole, Massachusetts 02543

A layered, basic igneous intrusion, analogous in mineralogy and texture to certain large, continental layered complexes, is exposed in the Romanche Fracture, equatorial Atlantic Ocean. Crustal intrusion of large masses of basic magmas with their subsequent gravity differentiation is probably one of a number of major processes involved in the formation of new oceanic crust during sea-floor spreading.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)