Abstract
We looked for chemical evidence of hydrothermal activity in sediments from Leg 65 sites. All the sediments analyzed showed bulk compositions typical of normal hemipelagic sediments, and there was no evidence of Fe-enriched basal sediment of the type that is widespread elsewhere on the East Pacific Rise and rise flanks. No definite chemical evidence was found for the presence of hydrothermal sulfides similar to those forming nearby on the East Pacific Rise at 21 °N, but in view of the localized nature of the latter, deposits of this type cannot be ruled out in the area drilled by Leg 65.
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