Abstract
Forty-nine genera and 85 diatom species are reported from western Woodlark Basin Late Pleistocene and Holocene bathyal sediments. Although planktic pelagic diatoms predominate throughout, shallow-water benthic and neritic forms, with some brackish and fresh-water forms, are common in the upper (Holocene) part of the section. This implies sediment redeposition by slumps and turbidity currents. The redeposited assemblages are absent from underlying Upper Pleistocene sediments deposited during a cold interval, but reoccur in warmer water (Würm) sediment deeper in the section.
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