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Pleistocene ice and paleo-strain rates at Taylor Glacier, Antarctica

Published online by Cambridge University Press:  20 January 2017

S.M. Aciego ,
K.M. Cuffey ,
J.L. Kavanaugh ,
D.L. Morse  and
J.P. Severinghaus
S.M. Aciego
Affiliation:
Institute for Isotope Geology and Mineral Resources, ETH-Zentrum, Clausiusstrasse 25, NW C 83.1, CH-8092, Zurich, Switzerland
K.M. Cuffey*
Affiliation:
Department of Geography, UC Berkeley, 507 McCone Hall, Berkeley, CA 94720-4740, USA
J.L. Kavanaugh
Affiliation:
Department of Earth and Atmospheric Sciences, University of Alberta, 1-26 Earth Sciences Building, Edmonton, Alberta, Canada T6G 2E3
D.L. Morse
Affiliation:
Institute for Geophysics, University of Texas, 4412 Spicewood Springs Rd., No. 600, Austin, TX 78759-8500, USA
J.P. Severinghaus
Affiliation:
Scripps Institution of Oceanography, UC San Diego, San Diego, CA 92093-0244, USA
*
*Corresponding author.E-mail address:aciego@erdw.ethz.ch (S.M. Aciego), kcuffey@berkeley.edu (K.M. Cuffey), jeff.kavanaugh@ualberta.ca (J.L. Kavanaugh), morse@utig.ig.utexas.edu (D.L. Morse), jseveringhaus@ucsd.edu (J.P. Severinghaus).
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Abstract

Ice exposed in ablation zones of ice sheets can be a valuable source of samples for paleoclimate studies and information about long-term ice dynamics. We report a 28-km long stable isotope sampling transect along a flowline on lower Taylor Glacier, Antarctica, and show that ice from the last glacial period is exposed here over tens of kilometers. Gas isotope analyses on a small number of samples confirm our age hypothesis. These chronostratigraphic data contain information about past ice dynamics and in particular should be sensitive to the longitudinal strain rate on the north flank of Taylor Dome, averaged over millennia. The imprint of climatic changes on ice dynamics may be discernible in these data.

Keywords

Taylor GlacierTaylor DomeHorizontal ice coreδDδ18Oδ18O of O2Glacier strain rates
Type
Research Article
Information
Quaternary Research , Volume 68 , Issue 3 , November 2007 , pp. 303 - 313
Copyright
University of Washington

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