The marine geological imprint of Antarctic ice shelves

James A. Smith (), Alastair G. C. Graham, Alix L. Post, Claus-Dieter Hillenbrand, Philip J. Bart and Ross D. Powell
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James A. Smith: British Antarctic Survey
Alastair G. C. Graham: University of Exeter
Alix L. Post: Geoscience Australia
Claus-Dieter Hillenbrand: British Antarctic Survey
Philip J. Bart: Department of Geology and Geophysics
Ross D. Powell: Northern Illinois University

Nature Communications, 2019, vol. 10, issue 1, 1-16

Abstract: Abstract Reductions in the thickness and extent of Antarctic ice shelves are triggering increased discharge of marine-terminating glaciers. While the impacts of recent changes are well documented, their role in modulating past ice-sheet dynamics remains poorly constrained. This reflects two persistent issues; first, the effective discrimination of sediments and landforms solely attributable to sub-ice-shelf deposition, and second, challenges in dating these records. Recent progress in deciphering the geological imprint of Antarctic ice shelves is summarised, including advances in dating methods and proxies to reconstruct drivers of change. Finally, we identify several challenges to overcome to fully exploit the paleo record.

Date: 2019
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DOI: 10.1038/s41467-019-13496-5

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