Alaska Palaeo-Glacier Atlas (Version 2) ----------------------------------------------------------------------- World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program ----------------------------------------------------------------------- NOTE: PLEASE CITE ORIGINAL REFERENCE WHEN USING THIS DATA!!!!! NAME OF DATA SET: Alaska Palaeo-Glacier Atlas (Version 2) LAST UPDATE: 8/2011 (Original receipt by WDC Paleo) CONTRIBUTORS: Kaufman, D.S., N.E. Young, J.P. Briner, and W.F. Manley IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2011-104 WDC PALEO CONTRIBUTION SERIES CITATION: Kaufman, D.S., et al. 2011. Alaska Palaeo-Glacier Atlas (Version 2). IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series # 2011-104. NOAA/NCDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCE: Kaufman, D.S., N.E. Young, J.P. Briner, and W.F. Manley. 2011. Alaska Palaeo-Glacier Atlas (Version 2). In: Ehlers, J., P.L. Gibbard, and P.D. Hughes (eds), Quaternary Glaciations - Extent and Chronology - A Closer Look. Developments in Quaternary Science, Vol. 15, pp. 427-445. Elsevier, Amsterdam. ISBN: 978-0-444-53447-7 doi:10.1016/B978-0-444-53447-7.00033-7 http://www.sciencedirect.com/science/article/pii/B9780444534477000337 ABSTRACT: This report is an update of the Alaska PalaeoGlacier Atlas. It includes information published since 2002 and is based on a more detailed map scale. In addition to the all-time maximum extent of former glaciers and the late Wisconsinan extent, this update includes the mapped limit for the penultimate glaciation, which generally occurred during the early Wisconsinan. The update also includes a compilation of cosmogenic exposure ages linked to the geospatial database. ADDITIONAL REFERENCES: Manley, W.F. and D.S. Kaufman. 2002. Alaska PaleoGlacier Atlas. Institute of Arctic and Alpine Research (INSTAAR), University of Colorado. http://instaar.colorado.edu/QGISL/ak_paleoglacier_atlas/ Kaufman, D.S. and W.F. Manley. 2004. Pleistocene maximum and Late Wisconsin glacier extents across Alaska, U.S.A. in Ehlers, J. and P.L. Gibbard, eds., Quaternary Glaciations - Extent and Chronology, Part II: North America. Developments in Quaternary Science, Vol. 2, Part 2, pp. 9 - 27, Elsevier, Amsterdam. ISBN: 978-0-444-51592-6 doi:10.1016/S1571-0866(04)80182-9 http://www.sciencedirect.com/science/article/pii/S1571086604801829 GEOGRAPHIC REGION: Northwestern North America PERIOD OF RECORD: Wisconsinan, ~70 - 12 KYrBP FUNDING SOURCE: US National Science Foundation DESCRIPTION: This report is an update of the Alaska Palaeo-Glacier Atlas (APG Atlas), a collaborative effort among glacial geologists working in Alaska to compile a coherent map of former glacier limits from across the state. The previous version of the digital atlas (v1) was originally available online in 2002 (Manley and Kaufman, 2002). The evidence used to draw the glacial limits in 14 regions across Alaska was described in a subsequent report (Kaufman and Manley, 2004), which was part of a larger effort to create a global database of Pleistocene glacial extents with a target scale of 1:1,000,000. This update (APG Atlas v2) is based on a more detailed map scale and, therefore, provides more accurately resolved limits of former glacier extents. In addition, the previous version included the only two glacier limits that could be most confidently mapped and correlated around the state: (1) the all-time maximum extent of former glaciers; and (2) the late Wisconsinan extent (= late Weichselian = marine isotope stage (MIS) 2 = spanning the period between about 24,000 and 12,000 years ago). In this update, we added a third mapped limit for areas where it has been sufficiently well studied, namely for the penultimate glaciation, which over most of Alaska occurred during the early Wisconsinan. Glacier extent maps are available in Google Earth format at: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/alaska-glacier-atlas/alaska-palaeoglacier-atlas-v2.kmz or in ARC GIS format at: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/alaska-glacier-atlas/arcgis/ Exposure ages are listed below, and in the equivalent Excel format file: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/alaska-glacier-atlas/alaska-palaeoglacier-atlas-v2.xls DATA: Table 1. Cosmogenic exposure ages from late and early Wisconsinan drift in Alaska (included as .kml file for Google Earth). SampleID Lat.°N Long.°W Age(ka) Isotope Region Reference* Ages from late Wisconsinan (or younger) drift FL06-01 63.549 -144.357 22.4 ± 0.6 10Be Northeast Alaska Range 1 FL06-02 63.554 -144.369 9.3 ± 0.4 10Be Northeast Alaska Range 1 FL06-03 63.545 -144.416 16.5 ± 0.5 10Be Northeast Alaska Range 1 FL06-04 63.546 -144.427 16.3 ± 0.4 10Be Northeast Alaska Range 1 FL06-05 63.544 -144.455 16.5 ± 0.5 10Be Northeast Alaska Range 1 FL06-06 63.547 -144.469 16.6 ± 0.4 10Be Northeast Alaska Range 1 FL06-12 63.552 -144.391 9.5 ± 0.3 10Be Northeast Alaska Range 1 US07-09 63.505 -144.526 15.4 ± 0.6 10Be Northeast Alaska Range 1 US07-10 63.505 -144.526 13.9 ± 0.4 10Be Northeast Alaska Range 1 US07-11 63.504 -144.527 13.2 ± 0.3 10Be Northeast Alaska Range 1 FL07-01 63.510 -144.516 6.6 ± 0.2 10Be Northeast Alaska Range 1 FL07-02 63.510 -144.518 11.3 ± 0.3 10Be Northeast Alaska Range 1 FL07-06 63.511 -144.535 5.3 ± 0.2 10Be Northeast Alaska Range 1 FL07-07 63.511 -144.539 8.5 ± 0.4 10Be Northeast Alaska Range 1 FL07-08 63.510 -144.537 11.8 ± 0.7 10Be Northeast Alaska Range 1 US07-04 63.500 -144.523 11.6 ± 0.8 10Be Northeast Alaska Range 1 WM01-1D 61.277 -157.887 15.8 ± 1.8 10Be Chuilnuk Mountains, Interior Alaska 2 WM01-1C 61.279 -157.889 14.6 ± 1.5 10Be Chuilnuk Mountains, Interior Alaska 2 WM01-1A 61.296 -157.891 12.1 ± 2.0 10Be Chuilnuk Mountains, Interior Alaska 2 WM01-1B 61.283 -157.891 9.3 ± 1.8 10Be Chuilnuk Mountains, Interior Alaska 2 WM01-2E 61.293 -157.862 17.7 ± 1.5 10Be Chuilnuk Mountains, Interior Alaska 2 WM01-2C 61.294 -157.861 16.4 ± 1.7 10Be Chuilnuk Mountains, Interior Alaska 2 WM01-2D 61.293 -157.862 15.2 ± 1.5 10Be Chuilnuk Mountains, Interior Alaska 2 WM01-2B 61.296 -157.859 14.3 ± 1.2 10Be Chuilnuk Mountains, Interior Alaska 2 NLL-00-2 61.458 -155.359 38.1 ± 2.1 10Be Lime Hills, western Alaska Range 2 NLL-00-1 61.459 -155.360 25.6 ± 4.5 10Be Lime Hills, western Alaska Range 2 SR2-00-2 61.481 -154.535 21.3 ± 0.9 10Be Lime Hills, western Alaska Range 2 SR2-00-5 61.475 -154.504 19.3 ± 1.0 10Be Lime Hills, western Alaska Range 2 SR2-00-3 61.486 -154.568 19.2 ± 0.8 10Be Lime Hills, western Alaska Range 2 SR2-00-4 61.459 -154.466 18.2 ± 0.7 10Be Lime Hills, western Alaska Range 2 KH 2-1 65.142 -154.359 30.0 ± 1.4 10Be Kokrines Hills, Interior Alaska 2 KH 2-2 65.141 -154.356 23.7 ± 1.0 10Be Kokrines Hills, Interior Alaska 2 KH 2-3 65.141 -154.355 23.3 ± 1.7 10Be Kokrines Hills, Interior Alaska 2 KH 2-4 65.142 -154.357 21.1 ± 1.3 10Be Kokrines Hills, Interior Alaska 2 WM00-09A 64.673 -143.357 28.4 ± 1.1 10Be Yukon-Tanana Upland, Interior Alaska 2 WM00-09B 64.673 -143.355 25.4 ± 1.8 10Be Yukon-Tanana Upland, Interior Alaska 2 WM00-09D 64.673 -143.353 18.3 ± 1.2 10Be Yukon-Tanana Upland, Interior Alaska 2 WM00-09E 64.672 -143.354 ~15.7 10Be Yukon-Tanana Upland, Interior Alaska 2 WM00-08B 64.703 -143.367 28.2 ± 1.2 10Be Yukon-Tanana Upland, Interior Alaska 2 WM00-08E 64.702 -143.377 20.9 ± 1.2 10Be Yukon-Tanana Upland, Interior Alaska 2 WM00-08D 64.702 -143.377 17.1 ± 0.9 10Be Yukon-Tanana Upland, Interior Alaska 2 WM00-08C 64.703 -143.369 16.4 ± 1.1 10Be Yukon-Tanana Upland, Interior Alaska 2 BR02-15 69.455 -144.082 76.0 ± 1.9 10Be Northeastern Brooks Range 2 BR02-16 69.458 -144.081 50.0 ± 1.3 10Be Northeastern Brooks Range 2 BR02-14 69.454 -144.082 27.3 ± 0.9 10Be Northeastern Brooks Range 2 BR02-8 69.460 -143.794 55.7 ± 1.4 10Be Northeastern Brooks Range 2 BR02-7 69.460 -143.800 26.3 ± 0.7 10Be Northeastern Brooks Range 2 BR02-6 69.458 -143.801 24.8 ± 0.6 10Be Northeastern Brooks Range 2 BR02-5 69.445 -143.787 21.6 ± 0.6 10Be Northeastern Brooks Range 2 BR02-9 69.461 -143.796 20.1 ± 0.7 10Be Northeastern Brooks Range 2 BR02-11 69.461 -143.713 42.3 ± 1.1 10Be Northeastern Brooks Range 2 BR02-10 69.460 -143.711 26.9 ± 0.7 10Be Northeastern Brooks Range 2 BR02-12 69.459 -143.715 12.8 ± 0.5 10Be Northeastern Brooks Range 2 BR02-13 69.449 -143.743 9.2 ± 0.4 10Be Northeastern Brooks Range 2 BR02-4 69.343 -143.561 21.6 ± 0.4 10Be Northeastern Brooks Range 2 BR02-1 69.339 -143.578 20.9 ± 0.6 10Be Northeastern Brooks Range 2 BR02-3 69.349 -143.576 18.1 ± 0.7 10Be Northeastern Brooks Range 2 BR02-2 69.337 -143.575 15.6 ± 0.5 10Be Northeastern Brooks Range 2 Denali-15 63.454 -150.741 146.4 ± 10.4 10Be Denali NP, Central Alaska Range 3 Denali-16A 63.449 -150.676 7.4 ± 2.2 10Be Denali NP, Central Alaska Range 3 Denali-16B 63.449 -150.676 5.7 ± 2.5 10Be Denali NP, Central Alaska Range 3 Denali-17 63.444 -150.616 2.5 ± 0.3 10Be Denali NP, Central Alaska Range 3 Denali-18A 63.445 -150.585 11.5 ± 1.0 10Be Denali NP, Central Alaska Range 3 Denali-18B 63.445 -150.585 28.3 ± 2.0 10Be Denali NP, Central Alaska Range 3 Denali-20A 63.454 -150.546 141.7 ± 9.8 10Be Denali NP, Central Alaska Range 3 Denali-20B 63.454 -150.546 27.9 ± 1.9 10Be Denali NP, Central Alaska Range 3 Denali-21 63.457 -150.552 4.3 ± 0.5 10Be Denali NP, Central Alaska Range 3 DFCR-1 63.212 -144.828 11.7 ± 1.2 10Be Central Alaska Range 4 DFCR-2 63.211 -144.828 10.5 ± 1.1 10Be Central Alaska Range 4 DFCR-3 63.211 -144.828 11.7 ± 1.2 10Be Central Alaska Range 4 DFCR-4 63.208 -144.833 10.3 ± 1.0 10Be Central Alaska Range 4 DFCR-5 63.208 -144.834 11.3 ± 1.2 10Be Central Alaska Range 4 DFCR-6 63.206 -144.835 11.0 ± 1.2 10Be Central Alaska Range 4 DFCR-7 63.209 -144.829 10.2 ± 1.1 10Be Central Alaska Range 4 DFCR-8 63.209 -144.832 11.2 ± 1.2 10Be Central Alaska Range 4 DFCR-9 63.209 -144.832 11.2 ± 1.2 10Be Central Alaska Range 4 DFCRSD-1 63.212 -144.828 10.9 ± 1.2 10Be Central Alaska Range 4 DFCRSD-2 63.209 -144.829 10.9 ± 1.2 10Be Central Alaska Range 4 DFMF-1 63.152 -144.591 13.2 ± 1.4 10Be Central Alaska Range 4 DFMF-2 63.152 -144.590 12.9 ± 1.4 10Be Central Alaska Range 4 DFMF-3 63.150 -144.597 12.4 ± 1.3 10Be Central Alaska Range 4 DFMF-4 63.150 -144.596 14.3 ± 1.5 10Be Central Alaska Range 4 DFMF-5 63.151 -144.594 11.6 ± 1.2 10Be Central Alaska Range 4 DFMFSD-1 63.152 -144.591 10.4 ± 1.1 10Be Central Alaska Range 4 DFMFSD-2 63.151 -144.594 10.9 ± 1.1 10Be Central Alaska Range 4 DFSC1 63.463 -148.644 14.9 ± 1.6 10Be Central Alaska Range 4 DFSC2 63.463 -148.644 16.0 ± 1.7 10Be Central Alaska Range 4 DFSC3 63.462 -148.644 15.1 ± 1.6 10Be Central Alaska Range 4 DFSC7 63.461 -148.648 15.9 ± 1.7 10Be Central Alaska Range 4 DFSC8 63.459 -148.652 14.9 ± 1.6 10Be Central Alaska Range 4 DFWC-1 63.488 -148.084 2.1 ± 0.2 10Be Central Alaska Range 4 DFWC-2 63.487 -148.085 2.4 ± 0.4 10Be Central Alaska Range 4 DFNM-1 62.617 -143.032 10.1 ± 1.1 10Be Central Alaska Range 4 DFNM-2 62.617 -143.032 11.5 ± 1.3 10Be Central Alaska Range 4 DFNM-1R 62.617 -143.032 12.2 ± 1.3 10Be Central Alaska Range 4 DFNM-RG 62.617 -143.032 9.3 ± 1.0 10Be Central Alaska Range 4 DFDP-1 62.672 -143.156 10.2 ± 1.1 10Be Central Alaska Range 4 DFDP-2 62.673 -143.155 8.0 ± 0.8 10Be Central Alaska Range 4 DFDP-3 62.672 -143.153 14.1 ± 1.5 10Be Central Alaska Range 4 DFDP-4 62.672 -143.156 12.3 ± 1.3 10Be Central Alaska Range 4 DFTR-6 62.674 -142.807 13.0 ± 1.4 10Be Central Alaska Range 4 DFTR-7 62.674 -142.807 14.3 ± 1.5 10Be Central Alaska Range 4 DFTR-8 62.669 -142.809 16.1 ± 1.7 10Be Central Alaska Range 4 DFTR-9 62.670 -142.814 9.2 ± 1.0 10Be Central Alaska Range 4 DFTR-10 62.670 -142.814 10.8 ± 1.2 10Be Central Alaska Range 4 DFTR-11 62.674 -142.812 13.2 ± 1.4 10Be Central Alaska Range 4 DFTR-12 62.674 -142.812 9.9 ± 1.1 10Be Central Alaska Range 4 DDDN-1 63.784 -145.742 17.4 ± 1.9 10Be Delta River Valley, central Alaska Range 5 DDDN-1-SD 63.784 -145.742 17.2 ± 1.9 10Be Delta River Valley, central Alaska Range 5 DDDN-2 63.778 -145.763 23.6 ± 2.6 10Be Delta River Valley, central Alaska Range 5 DDDN-2-SD 63.778 -145.763 16.8 ± 1.9 10Be Delta River Valley, central Alaska Range 5 DDDN-3 63.774 -145.774 18.1 ± 2.0 10Be Delta River Valley, central Alaska Range 5 DDDN-3-SD 63.774 -145.774 17.0 ± 1.9 10Be Delta River Valley, central Alaska Range 5 DR1-1 63.777 -145.756 13.2 ± 1.5 10Be Delta River Valley, central Alaska Range 5 DR1-2 63.777 -145.757 16.8 ± 1.9 10Be Delta River Valley, central Alaska Range 5 DR1-3 63.779 -145.753 11.9 ± 1.3 10Be Delta River Valley, central Alaska Range 5 DR1-4 63.780 -145.753 13.1 ± 1.5 10Be Delta River Valley, central Alaska Range 5 DR1-5 63.779 -145.756 67.6 ± 7.4 10Be Delta River Valley, central Alaska Range 5 Ala-126A 63.610 -148.777 15.0 ± 2.3 10Be Nenana River valley, central Alaska Range 6 Ala-126B 63.610 -148.777 14.4 ± 2.2 10Be Nenana River valley, central Alaska Range 6 Ala-127 63.606 -148.799 20.4 ± 3.4 10Be Nenana River valley, central Alaska Range 6 Ala-128 63.605 -148.799 14.9 ± 2.0 10Be Nenana River valley, central Alaska Range 6 Ala-130 63.603 -148.800 12.5 ± 2.5 10Be Nenana River valley, central Alaska Range 6 Ala-132 63.599 -148.799 15.9 ± 2.7 10Be Nenana River valley, central Alaska Range 6 Ala-133 63.598 -148.799 12.9 ± 4.1 10Be Nenana River valley, central Alaska Range 6 Ala-134 63.597 -148.799 15.6 ± 2.4 10Be Nenana River valley, central Alaska Range 6 Ala-119 63.675 -148.842 10.9 ± 1.9 10Be Nenana River valley, central Alaska Range 6 Ala-120 63.675 -148.842 57.3 ± 9.3 10Be Nenana River valley, central Alaska Range 6 Ala-121 63.676 -148.841 19.1 ± 3.1 10Be Nenana River valley, central Alaska Range 6 Ala-122 63.701 -148.872 11.3 ± 3.5 10Be Nenana River valley, central Alaska Range 6 Ala-123 63.699 -148.886 8.4 ± 2.7 10Be Nenana River valley, central Alaska Range 6 Ala-15 63.736 -148.893 0.8 ± 0.1 10Be Nenana River valley, central Alaska Range 6 Ala-16 63.736 -148.893 9.3 ± 1.7 10Be Nenana River valley, central Alaska Range 6 Ala-18 63.735 -148.894 6.9 ± 1.4 10Be Nenana River valley, central Alaska Range 6 Ala-19 63.735 -148.895 8.1 ± 4.1 10Be Nenana River valley, central Alaska Range 6 Ala-20 63.735 -148.894 1.0 ± 0.1 10Be Nenana River valley, central Alaska Range 6 Ala-135 63.897 -149.117 12.7 ± 1.9 10Be Nenana River valley, central Alaska Range 6 Ala-136 63.897 -149.124 15.2 ± 2.9 10Be Nenana River valley, central Alaska Range 6 Ala-137A 63.865 -149.132 73.6 ± 7.2 10Be Nenana River valley, central Alaska Range 6 Ala-137B 63.865 -149.132 97.3 ± 9.5 10Be Nenana River valley, central Alaska Range 6 Ala-156 63.868 -149.130 43.7 ± 4.5 10Be Nenana River valley, central Alaska Range 6 Ala-151 63.404 -148.843 12.0 ± 2.5 10Be Reindeer Hills, central Alaska Range 6 Ala-152 63.403 -148.843 12.5 ± 1.8 10Be Reindeer Hills, central Alaska Range 6 Ala-153 63.401 -148.847 14.1 ± 2.0 10Be Reindeer Hills, central Alaska Range 6 Ala-154 63.401 -148.840 12.9 ± 1.9 10Be Reindeer Hills, central Alaska Range 6 Ala-155 63.400 -148.847 13.4 ± 2.0 10Be Reindeer Hills, central Alaska Range 6 Ala-158 63.402 -148.858 11.2 ± 1.4 10Be Reindeer Hills, central Alaska Range 6 Ala-159 63.401 -148.858 15.6 ± 2.5 10Be Reindeer Hills, central Alaska Range 6 Ala-160 63.401 -148.858 16.7 ± 4.1 10Be Reindeer Hills, central Alaska Range 6 Ala-161 63.899 -148.866 15.6 ± 3.3 10Be Reindeer Hills, central Alaska Range 6 Ala-162 63.899 -148.866 12.5 ± 2.4 10Be Reindeer Hills, central Alaska Range 6 Ala-164 63.893 -148.860 15.6 ± 3.5 10Be Reindeer Hills, central Alaska Range 6 Ala-165 63.893 -148.860 13.2 ± 2.1 10Be Reindeer Hills, central Alaska Range 6 Ala-166 63.893 -148.860 16.0 ± 3.8 10Be Reindeer Hills, central Alaska Range 6 Ala-41 63.303 -148.211 1.2 ± 0.2 10Be Monahan Flat, central Alaska Range 6 Ala-42 63.303 -148.210 1.6 ± 0.2 10Be Monahan Flat, central Alaska Range 6 Ala-43 63.302 -148.205 12.0 ± 1.5 10Be Monahan Flat, central Alaska Range 6 Ala-145 63.306 -148.212 21.3 ± 2.8 10Be Monahan Flat, central Alaska Range 6 Ala-147 63.305 -148.210 15.0 ± 2.1 10Be Monahan Flat, central Alaska Range 6 Ala-148 63.305 -148.210 31.0 ± 3.5 10Be Monahan Flat, central Alaska Range 6 Ala-140 63.238 -147.778 12.5 ± 1.9 10Be Monahan Flat, central Alaska Range 6 Ala-141 63.238 -147.777 12.2 ± 1.8 10Be Monahan Flat, central Alaska Range 6 Ala-143 63.238 -147.774 11.8 ± 1.9 10Be Monahan Flat, central Alaska Range 6 Wattamuse T-1 59.349 -161.299 26.7 ± 0.9 36Cl Ahklun Mountains, southwestern Alaska 7 Wattamuse T-2 59.349 -161.298 20.4 ± 0.9 36Cl Ahklun Mountains, southwestern Alaska 7 Wattamuse T-3 59.350 -161.300 57.7 ± 4.4 36Cl Ahklun Mountains, southwestern Alaska 7 Wattamuse T-4 59.352 -161.303 30.3 ± 2.5 36Cl Ahklun Mountains, southwestern Alaska 7 Wattamuse T-5 59.352 -161.302 39.1 ± 2.0 36Cl Ahklun Mountains, southwestern Alaska 7 Wattamuse T-6 59.351 -161.301 30.3 ± 2.3 36Cl Ahklun Mountains, southwestern Alaska 7 Wattamuse R-1 59.346 -161.318 25.9 ± 0.8 36Cl Ahklun Mountains, southwestern Alaska 7 Wattamuse R-2 59.346 -161.318 26.4 ± 1.6 36Cl Ahklun Mountains, southwestern Alaska 7 Wattamuse R-3 59.363 -161.317 47.0 ± 1.3 36Cl Ahklun Mountains, southwestern Alaska 7 Kisogle-1 59.445 -161.226 17.9 ± 1.4 36Cl Ahklun Mountains, southwestern Alaska 7 Kisogle-2 59.444 -161.225 17.1 ± 1.5 36Cl Ahklun Mountains, southwestern Alaska 7 Kisogle-3 59.444 -161.232 3.1 ± 0.6 36Cl Ahklun Mountains, southwestern Alaska 7 Kisogle-4 59.449 -161.236 18.6 ± 1.8 36Cl Ahklun Mountains, southwestern Alaska 7 Kisogle-5 59.446 -161.241 16.6 ± 1.3 36Cl Ahklun Mountains, southwestern Alaska 7 Cloud Lake-1 59.423 -161.198 17.2 ± 1.1 36Cl Ahklun Mountains, southwestern Alaska 7 Cloud Lake-2 59.423 -161.198 24.0 ± 1.3 36Cl Ahklun Mountains, southwestern Alaska 7 Cloud Lake-3 59.423 -161.198 18.1 ± 1.4 36Cl Ahklun Mountains, southwestern Alaska 7 Cloud Lake-4 59.421 -161.198 15.0 ± 1.2 36Cl Ahklun Mountains, southwestern Alaska 7 Cloud Lake-5 59.419 -161.194 16.0 ± 1.2 36Cl Ahklun Mountains, southwestern Alaska 7 Chilly Valley-1 59.606 -160.589 26.7 ± 1.0 36Cl Ahklun Mountains, southwestern Alaska 7 Chilly Valley-2 59.606 -160.586 19.5 ± 1.0 36Cl Ahklun Mountains, southwestern Alaska 7 Chilly Valley-3 59.608 -160.582 6.2 ± 0.2 36Cl Ahklun Mountains, southwestern Alaska 7 Chilly Valley-4 59.608 -160.579 16.8 ± 0.6 36Cl Ahklun Mountains, southwestern Alaska 7 Gusty Lakes-1 59.612 -160.599 19.3 ± 0.4 36Cl Ahklun Mountains, southwestern Alaska 7 Gusty Lakes-2 59.612 -160.599 20.2 ± 0.6 36Cl Ahklun Mountains, southwestern Alaska 7 Gusty Lakes-3 59.609 -160.598 17.6 ± 0.5 36Cl Ahklun Mountains, southwestern Alaska 7 Gusty Lakes-4 59.606 -160.600 20.7 ± 0.4 36Cl Ahklun Mountains, southwestern Alaska 7 Gusty Lakes-5 59.608 -160.605 9.4 ± 0.6 36Cl Ahklun Mountains, southwestern Alaska 7 MB1-99-1 59.870 -159.222 11.2 ± 2.0 10Be Ahklun Mountains, southwestern Alaska 8 MB1-99-2 59.871 -159.224 15.6 ± 1.6 10Be Ahklun Mountains, southwestern Alaska 8 MB1-99-3 59.873 -159.227 16.1 ± 2.1 10Be Ahklun Mountains, southwestern Alaska 8 MB1-99-2 59.871 -159.224 14.1 ± 2.2 26Al Ahklun Mountains, southwestern Alaska 8 MB1-99-3 59.873 -159.227 16.2 ± 2.2 26Al Ahklun Mountains, southwestern Alaska 8 MB1-00-4 59.868 -159.220 11.0 ± 0.6 10Be Ahklun Mountains, southwestern Alaska 8 MB4-00-1 59.869 -159.276 11.7 ± 1.2 10Be Ahklun Mountains, southwestern Alaska 8 MB4-00-2 59.869 -159.276 9.4 ± 1.5 10Be Ahklun Mountains, southwestern Alaska 8 MB4-00-3 59.870 -159.271 10.1 ± 0.8 10Be Ahklun Mountains, southwestern Alaska 8 MB6-00-1 59.868 -159.217 9.8 ± 0.7 10Be Ahklun Mountains, southwestern Alaska 8 MB6-00-2 59.868 -159.218 11.2 ± 0.5 10Be Ahklun Mountains, southwestern Alaska 8 Ages from early Wisconsinan drift WM00-06B 64.661 -143.528 61.4 ± 3.9 10Be Yukon-Tanana Upland, Interior Alaska 2 WM00-06D 64.662 -143.536 46.4 ± 2.7 10Be Yukon-Tanana Upland, Interior Alaska 2 WM00-06A 64.661 -143.528 39.2 ± 1.4 10Be Yukon-Tanana Upland, Interior Alaska 2 WM00-06C 64.662 -143.532 25.3 ± 1.0 10Be Yukon-Tanana Upland, Interior Alaska 2 WM00-07A 64.637 -143.541 66.9 ± 2.2 10Be Yukon-Tanana Upland, Interior Alaska 2 WM00-07D 64.633 -143.548 115.9 ± 3.7 10Be Yukon-Tanana Upland, Interior Alaska 2 WM00-07C 64.633 -143.548 91.4 ± 2.5 10Be Yukon-Tanana Upland, Interior Alaska 2 WM00-07B 64.634 -143.546 77.6 ± 3.1 10Be Lime Hills, western Alaska Range 2 SR1-00-2 61.474 -154.540 55.4 ± 1.4 10Be Lime Hills, western Alaska Range 2 SR1-00-4 61.470 -154.503 51.4 ± 1.6 10Be Lime Hills, western Alaska Range 2 SR1-00-1 61.474 -154.544 47.9 ± 1.7 10Be Lime Hills, western Alaska Range 2 SR1-00-3 61.468 -154.489 44.2 ± 1.8 10Be Lime Hills, western Alaska Range 2 KH 1-3 65.169 -154.422 51.6 ± 1.7 10Be Kokrines Hills, Interior Alaska 2 KH 1-1 65.167 -154.419 23.9 ± 1.1 10Be Kokrines Hills, Interior Alaska 2 KH 1-2 65.167 -154.419 18.8 ± 1.2 10Be Kokrines Hills, Interior Alaska 2 DFDD1 63.774 -145.715 43.5 ± 4.8 10Be Delta River Valley, central Alaska 5 DFDD2 63.774 -145.715 34.8 ± 3.8 10Be Delta River Valley, central Alaska 5 DDOC-1 63.772 -145.715 32.5 ± 3.6 10Be Delta River Valley, central Alaska 5 DDOC-2 63.772 -145.715 34.1 ± 3.8 10Be Delta River Valley, central Alaska 5 DFDD3 63.802 -145.777 39.7 ± 4.4 10Be Delta River Valley, central Alaska 5 DFDD4 63.802 -145.777 28.6 ± 3.2 10Be Delta River Valley, central Alaska 5 DDDL-1 63.797 -145.788 18.2 ± 2.0 10Be Delta River Valley, central Alaska 5 DDDL-2 63.862 -145.627 57.2 ± 6.3 10Be Delta River Valley, central Alaska 5 DDDL-3 63.844 -145.605 55.5 ± 6.1 10Be Delta River Valley, central Alaska 5 DDDL-4Q 63.777 -145.778 16.0 ± 1.8 10Be Delta River Valley, central Alaska 5 DDDL-4G 63.777 -145.778 16.0 ± 1.8 10Be Delta River Valley, central Alaska 5 DDDL-5 63.804 -145.781 12.4 ± 1.4 10Be Delta River Valley, central Alaska 5 DDDL-6 63.763 -145.692 46.3 ± 5.1 10Be Delta River Valley, central Alaska 5 DDDL-8 63.766 -145.681 28.2 ± 3.1 10Be Delta River Valley, central Alaska 5 DR2-1 63.854 -145.733 51.2 ± 5.6 10Be Delta River Valley, central Alaska 5 DR2-2 63.854 -145.726 70.8 ± 7.8 10Be Delta River Valley, central Alaska 5 DR2-3 63.856 -145.741 43.8 ± 4.8 10Be Delta River Valley, central Alaska 5 DR2-4 63.857 -145.734 57.0 ± 6.3 10Be Delta River Valley, central Alaska 5 DR2-5 63.854 -145.724 25.7 ± 2.8 10Be Delta River Valley, central Alaska 5 Ala-11 63.845 -149.034 44.8 ± 4.8 10Be Nenana River valley, central Alaska Range 6 Ala-12 63.848 -149.025 51.8 ± 6.2 10Be Nenana River valley, central Alaska Range 6 Ala-13 63.848 -149.025 50.7 ± 5.9 10Be Nenana River valley, central Alaska Range 6 Ala-23 63.834 -149.000 55.5 ± 6.0 10Be Nenana River valley, central Alaska Range 6 Ala-24 63.833 -149.000 52.8 ± 5.9 10Be Nenana River valley, central Alaska Range 6 Ala-25 63.834 -149.001 55.8 ± 5.6 10Be Nenana River valley, central Alaska Range 6 Ala-107 63.837 -148.978 53.2 ± 5.4 10Be Nenana River valley, central Alaska Range 6 Ala-108 63.834 -148.975 49.6 ± 4.9 10Be Nenana River valley, central Alaska Range 6 Ala-157 63.855 -149.043 26.6 ± 3.6 10Be Nenana River valley, central Alaska Range 6 Olympic Creek-1 59.379 -161.202 57.9 ± 1.8 36Cl Ahklun Mountains, southwestern Alaska 7 Olympic Creek-2 59.378 -161.202 62.3 ± 1.7 36Cl Ahklun Mountains, southwestern Alaska 7 Olympic Creek-3 59.380 -161.197 57.5 ± 1.6 36Cl Ahklun Mountains, southwestern Alaska 7 Olympic Creek-4 59.381 -161.202 63.9 ± 2.3 36Cl Ahklun Mountains, southwestern Alaska 7 Note: Ages are as reported in the original reference. Most 10Be and 26Al ages use the same or very similar production rate. All 36Cl ages use the same production rates. Refer to original reference for all details of age and scaling calculations, in addition to how authors handle erosion rate and snow shielding. The location of all samples can be obtained in the Google Earth KML file. Latitude/longitude datum WGS84. * References: 1 = Young et al. (2009) 2 = Briner et al. (2005) 3 = Dortch et al. (2010) 4 = Matmon et al. (2006) 5 = Matmon et al. (in press) 6 = Dortch et al. (in press) 7 = Briner et al. (2001) 8 = Briner et al. (2002)