@article{5576628216bf49209099e4156bd6f2cd,
title = "Early to Late Holocene Surface Exposure Ages From Two Marine-Terminating Outlet Glaciers in Northwest Greenland",
abstract = "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.",
author = "Reusche, {Melissa M.} and Marcott, {Shaun A.} and Ceperley, {Elizabeth G.} and Barth, {Aaron M.} and Brook, {Edward J.} and Mix, {Alan C.} and Caffee, {Marc W.}",
note = "Funding Information: Funding for this research was provided by the National Science Foundation (PLR to S. A. M., E. J. B., and A. C. M.). M. W. C. was supported in part by NSF EAR-1560658. We thank the Polar Geospatial Center (NSF PLR awards 1043681, 1559691, and 1542736) for satellite imagery and digital elevation data; J. Jenkins and CH2M Polar Field Services for field logistics; J. Rosen for mountaineering and field safety expertise; C. Vavrus, M. Tofte, A. Horvath, and A. Belot for lab assistance; F. Phillips, M. Zreda, and J. Licciardi for discussions relating to 36Cl recalculations; and D. Kelly and E. Carson for early comments on the manuscript draft. Comments by two anonymous reviewers also improved the manuscript. Data related to this paper are available in Tables S1–S3 and at the National Center for Environmental Information. Funding Information: Funding for this research was provided by the National Science Foundation (PLR to S. A. M., E. J. B., and A. C. M.). M. W. C. was supported in part by NSF EAR-1560658. We thank the Polar Geospatial Center (NSF PLR awards 1043681, 1559691, and 1542736) for satellite imagery and digital elevation data; J. Jenkins and CH2M Polar Field Services for field logistics; J. Rosen for mountaineering and field safety expertise; C. Vavrus, M. Tofte, A. Horvath, and A. Belot for lab assistance; F. Phillips, M. Zreda, and J. Licciardi for discussions relating to 36Cl recalculations; and D. Kelly and E. Carson for early comments on the manuscript draft. Comments by two anonymous reviewers also improved the manuscript. Data related to this paper are available in Tables S1–S3 and at the National Center for Environmental Information. Publisher Copyright: {\textcopyright}2018. American Geophysical Union. All Rights Reserved.",
year = "2018",
month = jul,
day = "28",
doi = "10.1029/2018GL078266",
language = "English (US)",
volume = "45",
pages = "7028--7039",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",
number = "14",
}