Abstract
Abstract The primary objective of Leg 117 of the Ocean Drilling Program was to test ideas about the origin and variability of the Asian summer monsoon and its influence on depositional patterns and the oxygen minimum zone (OMZ) in the northwestern Indian Ocean. The western Arabian Sea currently is characterized by intense summer monsoonal upwelling that induces high primary productivity and distinctive planktonic assemblages. The planktonic indicators of upwelling conditions, as well as aeolian detritus from deserts and highlands of adjacent lands, are preserved in the sediments deposited on the Owen Ridge and the Oman Margin. A second objective was to resolve questions about the tectonic history of the Owen Ridge and Oman Margin.
Published Version
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