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Data · dataset · 2004

Osmium concentrations and isotope ratios of ODP Site 146-893A

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The Pleistocene deposits of Santa Barbara Basin (SBB) show laminations during interglacial periods typical of an anoxic or suboxic depositional environment and more sporadically laminated deposits during glacial times, indicating a more oxic environment of deposition.

Description

The 187Os/188Os value of sediment leaches varies as a function of climate, consistent with a more radiogenic Os signal during interglacial times and less radiogenic Os values more typical of glacial times.

The signal is confounded by contributions from a high Os detrital component with a variable 187Os/188Os value, but generally agrees with prior result from deposits from other marine environments.

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Provenance · 1 source records, 6 field assertions
SourceKeyLast seenRaw
DataCite10.1594/pangaea.70813215 d agoJSON v1
FieldAssertionExtractorEvidence
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