Bioturbation effects on abrupt climatic changes recorded in deep sea sediments. Correlation between d 18 O profiles and accelerator 14 C dating

Abstract

d 18 O records from deep sea sediments show that the net glacial build-up occurs relatively slowly, but that the end of an ice age occurs quickly, in less than 10 000 yr, implying a non-linear response to simple Milankovitch theory. Carbon-14 measurements, performed by accelerator mass spectrometry, provide reliable ages on different species of foraminifera and can be used to provide a detailed time scale for the oxygen isotope record of the last deglaciation. -after Authors