Articles | Volume 19, issue 1
https://doi.org/10.5194/cp-19-35-2023
https://doi.org/10.5194/cp-19-35-2023
Research article
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06 Jan 2023
Research article | Highlight paper |  | 06 Jan 2023

A cosmogenic nuclide-derived chronology of pre-Last Glacial Cycle glaciations during MIS 8 and MIS 6 in northern Patagonia

Tancrède P. M. Leger, Andrew S. Hein, Ángel Rodés, Robert G. Bingham, Irene Schimmelpfennig, Derek Fabel, Pablo Tapia, and ASTER Team

Data sets

10Be and 26Al TCN exposure age input data for CRONUS-Earth online calculator version 3 Tancrède P. M. Leger, Andrew S. Hein, Ángel Rodés, Robert G. Bingham, Irene Schimmelpfennig, Derek Fabel, Pablo T. Gonzalez, ASTER Team https://doi.org/10.17632/gg4b3sh9k2.1

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Co-editor-in-chief
This paper is providing new data about Southern Hemisphere ice sheet extent and dynamics during glaciations older than those occurring during the last climate cycle, a useful dataset that climate models require to calibrate their own reconstructions.
Short summary
Over the past 800 thousand years, variations in the Earth’s orbit and tilt have caused antiphased solar insolation intensity in the Northern and Southern Hemispheres. Paradoxically, glacial records suggest that global ice sheets have responded synchronously to major cold glacial and warm interglacial episodes. To address this puzzle, we present a new detailed glacier chronology that estimates the timing of multiple Patagonian ice-sheet waxing and waning cycles over the past 300 thousand years.