Stable isotope record of foraminifera from DSDP Hole 81-552A, supplement to: Keigwin, Lloyd D (1987): Toward a high-resolution chronology for latest Miocene paleoceanographic events. Paleoceanography, 2(6), 639-660

Lloyd D Keigwin
It is now widely accepted that expansion of continental glaciers is one manifestation of profound paleoenvironmental change in latest Miocene time. The oxygen isotopic record in deep-sea cores is inferred to document brief pulses in glaciation, based on covariance of delta18O in benthic and planktonic foraminifera, which probably lowered latest Miocene sea level by a minimum of 60 m. Additional evidence of glacial activity in the oxygen isotope record is obscured by the small signal...
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