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14C Ages of a Varved Last Glacial Maximum Section Off Pakistan

Published online by Cambridge University Press:  18 July 2016

Ulrich von Rad ,
Michael Sarnthein ,
Pieter M Grootes ,
Heidi Doose-Rolinski  and
Jochen Erbacher
Ulrich von Rad*
Affiliation:
Bundesanstalt für Geowissenschaften und Rohstoffe, D-30631 Hannover, Germany.
Michael Sarnthein
Affiliation:
Institut für Geowissenschaften, Universität Kiel, D-24118 Kiel, Germany.
Pieter M Grootes
Affiliation:
Leibniz Labor für Altersbestimmung und Isotopenforschung, Universität Kiel, D-24118 Kiel, Germany.
Heidi Doose-Rolinski
Affiliation:
Bundesanstalt für Geowissenschaften und Rohstoffe, D-30631 Hannover, Germany.
Jochen Erbacher
Affiliation:
Bundesanstalt für Geowissenschaften und Rohstoffe, D-30631 Hannover, Germany.
*
Corresponding author. Email: u.vonrad@t-online.de.
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Abstract

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In a core off Pakistan, we obtained 38 14C analyses by accelerator mass spectrometry (AMS) from a 4.4-m-thick, expanded, annually-laminated Last Glacial Maximum (LGM) section, bracketed by bioturbated intervals ascribed to the Heinrich-1 (H1) and Heinrich-2 (H2) equivalent events (52 14C analyses between 24–15 kyr BP). A floating varve age scale, anchored to the oxygen isotope record of the layer-counted GISP2 ice core at the H2/LGM boundary, results in an annually dated record for the LGM from 23,450–17,900 cal BP. The floating varve scale of the LGM provides us with a tentative calibration of local marine AMS 14C age dates to calendar years.

Information

Type
Soils and Sediments
Information
Radiocarbon , Volume 45 , Issue 3 , 2003 , pp. 467 - 477
Copyright
Copyright © The Arizona Board of Regents on behalf of the University of Arizona 

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