Pleistocene-recent boundary and wisconsin glacial biostratigraphy in the northern Indian ocean - PubMed (original) (raw)
Pleistocene-recent boundary and wisconsin glacial biostratigraphy in the northern Indian ocean
W E Frerichs. Science. 1968.
Abstract
Two faunal criteria define the Pleistocene-Recent boundary in the Andaman Sea and the Bay of Bengal: there is a marked decrease in the relative abundance of the Globigerina rubescens complex and a significant increase in the radiolarian number in sediments of the Recent epoch. The stratigraphic significance of the faunal criteria is supported by a carbon-14 date (8775 years before the present) obtained from foraminiferal tests in sediment at the faunal boundary, and previous publications on the stratigraphic significance of the radiolarian number in the eastern Pacific Ocean. The Globigerina rubescens complex, with greater relative abundances indicative of glacial substages, is an accurate indicator of cold and warm climatic intervals of the Wisconsin glacial stage.
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