Authors
Bethan J Davies, Christopher M Darvill, Harold Lovell, Jacob M Bendle, Julian A Dowdeswell, Derek Fabel, Juan-Luis García, Alessa Geiger, Neil F Glasser, Delia M Gheorghiu, Stephan Harrison, Andrew S Hein, Michael R Kaplan, Julian RV Martin, Monika Mendelova, Adrian Palmer, Mauri Pelto, Ángel Rodés, Esteban A Sagredo, Rachel K Smedley, John L Smellie, Varyl R Thorndycraft
Publication date
2020/5/1
Source
Earth-Science Reviews
Volume
204
Pages
103152
Publisher
Elsevier
Description
We present PATICE, a GIS database of Patagonian glacial geomorphology and recalibrated chronological data. PATICE includes 58,823 landforms and 1,669 geochronological ages, and extends from 38°S to 55°S in southern South America. We use these data to generate new empirical reconstructions of the Patagonian Ice Sheet (PIS) and subsequent ice masses and ice-dammed palaeolakes at 35 ka, 30 ka, 25 ka, 20 ka, 15 ka, 13 ka (synchronous with the Antarctic Cold Reversal), 10 ka, 5 ka, 0.2 ka and 2011 AD. At 35 ka, the PIS covered of 492.6 x103 km2, had a sea level equivalent of ~1,496 mm, was 350 km wide and 2090 km long, and was grounded on the Pacific continental shelf edge. Outlet glacier lobes remained topographically confined and the largest generated the suites of subglacial streamlined bedforms characteristic of ice streams. The PIS reached its maximum extent by 33 – 28 ka from 38°S to …
Total citations
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