East Pacific Rise near 13 degree N: Geology of new hydrothermal fields

Abundant massive sulfide deposits are present at the crest of the East Pacific Rise near 13 degree North, where the opening rate is about 12 centimeters per year. Large manganese and helium-3 anomalies in seawater samples, evidence of intense present-day activity of hydrothermal springs, indicate th...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1983-01, Vol.219 (4590), p.1321-1324
Main Authors: Hekinian, R, Fevrier, M, Avedik, F, Cambon, P, Charlou, J L, Needham, H D, Raillard, J, Boulegue, J, Merlivat, L
Format: Article
Language:English
Subjects:
Marine
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Summary:Abundant massive sulfide deposits are present at the crest of the East Pacific Rise near 13 degree North, where the opening rate is about 12 centimeters per year. Large manganese and helium-3 anomalies in seawater samples, evidence of intense present-day activity of hydrothermal springs, indicate that sulfides are still being produced along segment of the rise. Massive sulfides also occur on adjacent off-axis seamounts.
ISSN:0036-8075