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  • 1
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    PANGAEA
    In:  Supplement to: Barth, Aaron M; Marcott, Shaun A; Licciardi, Joseph M; Shakun, Jeremy D (2019): Deglacial Thinning of the Laurentide Ice Sheet in the Adirondack Mountains, New York, USA, Revealed by ³⁶Cl Exposure Dating. Paleoceanography and Paleoclimatology, 34(6), 946-953, https://doi.org/10.1029/2018PA003477
    Publication Date: 2023-01-30
    Description: Properties and analytical data for samples collected for chlorine-36 surface exposure ages in the Adirondack Mountains of New York, USA. Also includes the major and trace element chemistry for the samples necessary for exposure age calculations.
    Keywords: Adirondack; chlorine-36; Cosmogenic nuclide; deglacial; surface exposure
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Limitation Availability
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  • 2
    Publication Date: 2023-01-30
    Keywords: Accelerator mass spectrometry (AMS); Adirondack; Algonquin_Peak; Algonquin Peak; Balanced_Rocks; Balanced Rocks; Bald_Peak; Bald Peak; Big_Crow_Mountain; Big Crow Mountain; Boron; Boundary_Peak; Boundary Peak; Chloride; chlorine-36; Chromium; Cobble_Hill; Cobble Hill; Cosmogenic nuclide; deglacial; Esther_Mountain; Esther Mountain; Event label; Gadolinium; Giant_Mountain; Giant Mountain; Inductively coupled plasma - mass spectrometry (ICP-MS); Lithium; Location; Marcy_Airfield; Marcy Airfield; MULT; Multiple investigations; Pitchoff_Mountain; Pitchoff Mountain; Rocky_Peak; Rocky Peak; Samarium; Sample code/label; surface exposure; Thorium; Uranium
    Type: Dataset
    Format: text/tab-separated-values, 210 data points
    Location Call Number Limitation Availability
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  • 3
    Publication Date: 2023-01-30
    Keywords: Adirondack; Algonquin_Peak; Algonquin Peak; Balanced_Rocks; Balanced Rocks; Bald_Peak; Bald Peak; Big_Crow_Mountain; Big Crow Mountain; Boundary_Peak; Boundary Peak; Carrier; Chlorine-35/Chlorine-37; Chlorine-35/Chlorine-37, standard deviation; chlorine-36; Chlorine-36; Chlorine-36, standard deviation; Chlorine-36/Chlorine-37; Chlorine-36/Chlorine-37, standard deviation; Cobble_Hill; Cobble Hill; Comment; Cosmogenic nuclide; deglacial; Density; ELEVATION; Esther_Mountain; Esther Mountain; Event label; Exposure age; Exposure age, standard deviation; Giant_Mountain; Giant Mountain; LATITUDE; Location; LONGITUDE; Marcy_Airfield; Marcy Airfield; MULT; Multiple investigations; Pitchoff_Mountain; Pitchoff Mountain; Rocky_Peak; Rocky Peak; Sample code/label; Sample mass; Shielding, relative; surface exposure; Thickness; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 380 data points
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  • 4
    Publication Date: 2023-04-24
    Keywords: Adirondack; Algonquin_Peak; Algonquin Peak; Aluminium oxide; Balanced_Rocks; Balanced Rocks; Bald_Peak; Bald Peak; Big_Crow_Mountain; Big Crow Mountain; Boundary_Peak; Boundary Peak; Calcium oxide; chlorine-36; Chromium(III) oxide; Cobble_Hill; Cobble Hill; Cosmogenic nuclide; deglacial; Esther_Mountain; Esther Mountain; Event label; Giant_Mountain; Giant Mountain; Iron oxide, Fe2O3; Location; Loss on ignition; Magnesium oxide; Manganese oxide; Marcy_Airfield; Marcy Airfield; MULT; Multiple investigations; Phosphorus pentoxide; Pitchoff_Mountain; Pitchoff Mountain; Potassium oxide; Rocky_Peak; Rocky Peak; Sample code/label; Silicon dioxide; Sodium oxide; surface exposure; Titanium dioxide; X-ray fluorescence (XRF)
    Type: Dataset
    Format: text/tab-separated-values, 294 data points
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  • 5
    Publication Date: 2011-02-01
    Description: New 10Be surface exposure ages from adjacent valleys in the upper Arkansas River basin, Colorado (United States), indicate that Pinedale maxima culminated asynchronously at 22.4 {+/-} 1.4, 19.2 {+/-} 0.2, 17.8 {+/-} 0.6, and 15.8 {+/-} 0.4 ka, but that deglaciation initiated synchronously between ca. 16 and 15 ka. These data are combined with published glacial chronologies across the western United States, and indicate that although the ages of Pinedale terminal moraines vary within individual ranges as well as regionally, most western United States glaciers remained near their Pinedale termini until ca. 16 ka, at which time widespread deglaciation commenced. We hypothesize that the near-synchronous demise of glaciers across the western U.S. between ca. 15 and ca. 13 ka was driven by the first major Northern Hemisphere warming following the Last Glacial Maximum, but that some differences in Pinedale culmination ages can be explained by nonclimatic factors intrinsic to individual valleys. These results suggest the need for caution in focusing exclusively on climate forcings to explain apparent asynchrony in Pinedale maxima.
    Print ISSN: 0091-7613
    Electronic ISSN: 1943-2682
    Topics: Geosciences
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  • 6
    Publication Date: 2022-05-25
    Description: Author Posting. © Nature Publishing Group, 2008. This is the author's version of the work. It is posted here by permission of Nature Publishing Group for personal use, not for redistribution. The definitive version was published in Nature Geoscience 1 (2008): 620-624, doi:10.1038/ngeo285.
    Description: The early Holocene deglaciation of the Laurentide Ice Sheet (LIS) is the most recent and best constrained disappearance of a large Northern Hemisphere ice sheet. Its demise is a natural experiment for assessing rates of ice sheet decay and attendant contributions to sea level rise. Here we demonstrate with terrestrial and marine records that the final LIS demise occurred in two stages of rapid melting from ~9.0- 8.5 and 7.6-6.8 kyr BP with the LIS contributing ~1.3 and 0.7 cm yr-1 to sea level rise, respectively. Simulations using a fully coupled atmosphere-ocean general circulation model suggest that increased ablation from enhanced early Holocene boreal summer insolation may have been the predominant cause of the LIS contributions to sea level rise. Although the boreal summer surface radiative forcing of early Holocene LIS retreat is twice that of projections for 2100 C.E. greenhouse gas radiative forcing, the associated summer surface air temperature increase is the same. The geologic evidence for rapid LIS retreat under a comparable forcing provides a prehistoric precedent for a possible large negative mass balance response of the Greenland Ice Sheet by the end of the coming century.
    Description: This research was funded by National Science Foundation grants ATM-05-01351 & ATM-05-01241 to D.W.O. & G.A.S., start-up funds from the University of Wisconsin-Madison and a Woods Hole Oceanographic Institution Postdoctoral Scholarship to A.E.C., and the Woods Hole Oceanographic Institution's Ocean and Climate Change Institute (D.W.O. & R.E.C.).
    Repository Name: Woods Hole Open Access Server
    Type: Preprint
    Format: application/pdf
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