AMS-14C Ages Measured in Deep Sea Cores from the Southern Ocean: Implications for Sedimentation Rates during Isotope Stage 2
- 1 March 1989
- journal article
- Published by Cambridge University Press (CUP) in Quaternary Research
- Vol. 31 (2), 309-317
- https://doi.org/10.1016/0033-5894(89)90011-2
Abstract
14C dates obtained by accelerator mass spectrometry (AMS) on monospecific foraminiferal samples from two deep-sea sediment cores raised in the Indian sector of the Southern Ocean have been corrected for the difference in 14C composition between atmosphere and sea surface by using a reconstruction of the latitudinal 14C gradient which existed in the Southern Ocean prior to 1962. The corrected AMS-14C data show a reduced sedimentation rate in core MD 84-527 between 25,000 and 10,000 yr BP. For core MD 84-551 the available data suggest that the sedimentation rate was higher during the Holocene than during the glacial period. These changes in sedimentation rates may be attributed to an increased opal dissolution during the last glacial maximum.This publication has 31 references indexed in Scilit:
- Correction of accelerator mass spectrometry14C ages measured in planktonic foraminifera: Paleoceanographic implicationsPaleoceanography and Paleoclimatology, 1988
- New evidence from the South China Sea for an abrupt termination of the last glacial periodNature, 1988
- The chronology of the last Deglaciation: Implications to the cause of the Younger Dryas EventPaleoceanography and Paleoclimatology, 1988
- Retreat velocity of the North Atlantic polar front during the last deglaciation determined by 14C accelerator mass spectrometryNature, 1987
- Reconstruction of the last deglaciation: deconvolved records of ?18O profiles, micropaleontological variations and accelerator mass spectrometric14C datingClimate Dynamics, 1987
- Melting history of Antarctica during the past 60,000 yearsNature, 1986
- Direct dating of the oxygen-isotope record of the last deglaciation by 14C accelerator mass spectrometryNature, 1986
- Diatom distribution and paleoceanographic reconstruction in the Southern Ocean — Present and last glacial maximumMarine Micropaleontology, 1984
- A Convective Model for the Weddell PolynyaJournal of Physical Oceanography, 1981
- Seasonal Change of Antarctic Sea Ice CoverScience, 1975