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Record #191651:
- #191651
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MARC recordLate Quaternary glaciation and equilibrium line altitude variations of the McKinley River region, central Alaska Range / Jason M. Dortch, and 3 others.
| Title: | Late Quaternary glaciation and equilibrium line altitude variations of the McKinley River region, central Alaska Range / Jason M. Dortch, and 3 others. |
| Author(s): | Dortch, Jason M. |
| Date: | 2010. |
| In: | Boreas. (2010.), Vol. 39(2) (2010) |
| Abstract: | Examines glacial deposits and landforms formed by Mudrow and Peters glaciers in McKinley River region on northern side of Alaska Range, using geomorphic and ¹⁰Be terrestrial cosmogenic nuclide (TCN) surface exposure dating (SED) methods. Re-examines region's glacial history, identifying at least eight glacial advances, and calculates former equilibrium line altitudes (ELAs). Suggests differences in ELA depression between two glaciers reflect differences in supraglacial debris-cover, hypsometry and topographic controls on mass balance. Uses previous radiocarbon dating and lichenometry on late Holocene moraines to assess time (around 1.3 kyr) taken to reach early stabilisation after initial formation. |
| Notes: | Boreas. Vol. 39(2) :233-246 (2010). |
| Keywords: | 551.33 -- Glacial geology. 551.332.2 -- Drift, glacial. Deposits. 551.332.51 -- Ice-marginal landforms. 551.32 -- Glaciology. 551.324.22 -- Glaciers: Peters. 551.324.22 -- Glaciers: Mudrow. 550.93 -- Geochronology. 539.16 -- Radio-carbon dating. 539.163 -- Radionuclides. 546.45 -- Beryllium. 551.337 -- Chronology of the Pleistocene and recent periods. 551.336 -- Ice ages. 551.583 -- Climatic changes. 551.324.43 -- Land ice, regime and mass balance. 551.324.435 -- Firn line. 582.29 -- Lichens. 551.79 -- Quaternary. 551.794 -- Holocene. 551.332.52 -- Moraines, terminal and recessional. 551.324.83 -- Land ice, load. 551.4 -- Geomorphology. E7 -- Glaciology: glacial geology and ice ages. (*49) -- Alaska. (493) -- Belgium. |
| SPRI record no.: | 191651 |
LDR 02551naa#a2200000#a#4500 001 SPRI-191651 005 20240418135225.0 007 ta 008 240418s2010####xx#ab#|##|###|0||#0|eng#d 035 ## ‡aSPRI-191651 040 ## ‡aUkCU-P‡beng‡eaacr 100 1# ‡aDortch, Jason M. 245 10 ‡aLate Quaternary glaciation and equilibrium line altitude variations of the McKinley River region, central Alaska Range /‡cJason M. Dortch, and 3 others. 260 ## ‡a[S.l.] :‡b[s.n.],‡c2010. 300 ## ‡ap. 233-246 :‡bill., diags., tables, maps. 500 ## ‡aBoreas. Vol. 39(2) :233-246 (2010). 520 3# ‡aExamines glacial deposits and landforms formed by Mudrow and Peters glaciers in McKinley River region on northern side of Alaska Range, using geomorphic and ¹⁰Be terrestrial cosmogenic nuclide (TCN) surface exposure dating (SED) methods. Re-examines region's glacial history, identifying at least eight glacial advances, and calculates former equilibrium line altitudes (ELAs). Suggests differences in ELA depression between two glaciers reflect differences in supraglacial debris-cover, hypsometry and topographic controls on mass balance. Uses previous radiocarbon dating and lichenometry on late Holocene moraines to assess time (around 1.3 kyr) taken to reach early stabilisation after initial formation. 530 ## ‡aAlso issued online ‡uurn:doi:10.1111/j.1502-3885.2009.00121.x‡uhttps://dx.doi.org/10.1111/j.1502-3885.2009.00121.x 650 07 ‡a551.33 -- Glacial geology.‡2udc 650 07 ‡a551.332.2 -- Drift, glacial. Deposits.‡2udc 650 07 ‡a551.332.51 -- Ice-marginal landforms.‡2udc 650 07 ‡a551.32 -- Glaciology.‡2udc 650 07 ‡a551.324.22 -- Glaciers: Peters.‡2udc 650 07 ‡a551.324.22 -- Glaciers: Mudrow.‡2udc 650 07 ‡a550.93 -- Geochronology.‡2udc 650 07 ‡a539.16 -- Radio-carbon dating.‡2udc 650 07 ‡a539.163 -- Radionuclides.‡2udc 650 07 ‡a546.45 -- Beryllium.‡2udc 650 07 ‡a551.337 -- Chronology of the Pleistocene and recent periods.‡2udc 650 07 ‡a551.336 -- Ice ages.‡2udc 650 07 ‡a551.583 -- Climatic changes.‡2udc 650 07 ‡a551.324.43 -- Land ice, regime and mass balance.‡2udc 650 07 ‡a551.324.435 -- Firn line.‡2udc 650 07 ‡a582.29 -- Lichens.‡2udc 650 07 ‡a551.79 -- Quaternary.‡2udc 650 07 ‡a551.794 -- Holocene.‡2udc 650 07 ‡a551.332.52 -- Moraines, terminal and recessional.‡2udc 650 07 ‡a551.324.83 -- Land ice, load.‡2udc 650 07 ‡a551.4 -- Geomorphology.‡2udc 650 07 ‡aE7 -- Glaciology: glacial geology and ice ages.‡2local 651 #7 ‡a(*49) -- Alaska.‡2udc 651 #7 ‡a(493) -- Belgium.‡2udc 773 0# ‡7nnas ‡tBoreas. ‡gVol. 39(2) (2010) ‡wSPRI-56035 916 ## ‡a2010/08/17 -- RF 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20240418 ‡bRF