noaa-other-25070 Washington Land, Greenland Late Pleistocene to Holocene 10Be Moraine Ages Reusche, M.M.; Marcott, S.A.; Ceperley, E.G.; Barth, A.M.; Brook, E.J.; Mix, A.C.; Caffee, M.W. Washington Land, Greenland Late Pleistocene to Holocene 10Be Moraine Ages 2018-08-30 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/25070 Investigator M.M. Reusche Investigator S.A. Marcott Investigator E.G. Ceperley Investigator A.M. Barth Investigator E.J. Brook Investigator A.C. Mix Investigator M.W. Caffee earth science paleoclimate others geoscientificInformation 11500 cal yr BP 75 cal yr BP Complete 79.9 80.7 -64.2 -59.3 100 100 Continent North America Greenland Petermann Glacier>LATITUDE 80.7>LONGITUDE -59.3 Continent North America Greenland Humboldt Glacier>LATITUDE 79.9>LONGITUDE -64.2 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Melissa M. Reusche, Shaun A. Marcott, Elizabeth G. Ceperley, Aaron M. Barth, Edward J. Brook, Alan C. Mix, Marc W. Caffee 2018 Geophysical Research Letters 45 14 7028-7039 10.1029/2018GL078266 https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018GL078266

Terrestrial chronologies from southern Greenland provide a detailed deglacial history of the Greenland Ice Sheet (GIS). The northern GIS margin history, however, is less established. Here we present surface exposure ages from moraines associated with two large outlet glaciers, Petermann and Humboldt, in the northwestern sector of the GIS. These moraine chronologies indicate a Little Ice Age advance of the ice sheet margin before ~0.3 ka and a possible equivalent advance of similar magnitude prior to ~2.8 ka. An early Holocene moraine at Humboldt Glacier was abandoned by 8.3 ± 1.7 ka and is contemporaneous with other moraines deposited along the entire western GIS margin. This widespread ice margin stability between ~9 and 8 ka indicates that while this margin was influenced by warming atmospheric temperatures during the early Holocene, the warming was likely overprinted with the effect of the abrupt climate cooling at 9.3 and 8.2 ka. STUDY NOTES: 10Be ages from boulders on moraines of the Petermann and Humboldt glaciers

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/reusche2018/reusche2018-10beages.txt NOAA Template File; Washington Land 10Be Moraine Ages USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11