Reorganization of ice sheet flow patterns in Arctic Canada and the mid-Pleistocene transition

Geophysical Research Letters

Volumn 37, Issue 13, 2010, Pages

  Refsnider, Kurt A ^a   Miller, Gifford H ^a  

^a UNIVERSITY OF COLORADO   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ARCTIC ENGINEERING; FLOW PATTERNS; GLACIAL GEOLOGY; GLACIERS; SOIL MECHANICS;

ARCTIC CANADA; CANADIAN ARCTIC; CHEMICAL INDEX OF ALTERATIONS; CONCENTRATION OF; COSMOGENIC RADIONUCLIDES; DEGLACIATIONS; GEOMORPHIC EVIDENCE; GLACIAL CYCLES; GLACIAL EROSION; GLACIAL-INTERGLACIAL CYCLES; ICE FLOW; ICE-SHEET FLOW; LAURENTIDE ICE SHEETS; MODELING RESULTS; NEW APPROACHES; PLEISTOCENE; THERMAL REGIMES;

ICE;

BEDROCK; FLOW PATTERN; GEOLOGICAL RECORD; GLACIAL EROSION; GLACIAL-INTERGLACIAL CYCLE; ICE FLOW; LAURENTIDE ICE SHEET; PLEISTOCENE; TILL;

BAFFIN ISLAND; CANADA; CANADIAN ARCTIC; NUNAVUT;

EID: 77954681928     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/2010GL043478     Document Type: Article

References (26)

1. Andrews, J. T., P. Clark, and J. A. Stravers (1985), The patterns of glacial erosion across the eastern Canadian Arctic, in Quaternary Environments: Eastern Canadian Arctic, Baffin Bay, and Eastern Greenland, edited by J. T. Andrews, pp. 69-92, Allen and Unwin, Boston, Mass.
2. Balco, G., J. O. Stone, N. A. Lifton, and T. J. Dunai (2008), A complete and easily accessible means of calculating surface exposure ages or erosion rates from 10Be and 26Al measurements, Quat. Geochronol., 3, 174-195, doi:10.1016/j.quageo.2007.12.001.
3. Bintanja, R., and R. S. W. van de Wal (2008), North American ice-sheet dynamics and the onset of 100,000-year glacial cycles, Nature, 454, 869-872, doi:10.1038/nature07158.
4. Briner, J. P., G. H. Miller, P. T. Davis, and R. Finkel (2006), Cosmogenic radionuclides from fiord landscapes support differential erosion by overriding ice sheets, Geol. Soc. Am. Bull., 118, 406-420, doi:10.1130/B25716.1.
5. Briner, J. P., G. H. Miller, R. Finkel, and D. P. Hess (2008), Glacial erosion at the fjord onset zone and implications for the organization of ice flow on Baffin Island, Geomorphology, 97, 126-134, doi:10.1016/j. geomorph.2007.02.039.
6. Clark, P. U. (1994), Unstable behaviour of the Laurentide Ice Sheet over deforming sediment and its implications for climate change, Quat. Res., 41, 19-25, doi:10.1006/qres.1994.1002. (Pubitemid 24400719)
7. Clark, P. U., and D. Pollard (1998), Origin of the middle Pleistocene transition by ice sheet erosion of regolith, Paleoceanography, 13, 1-9, doi:10.1029/97PA02660.
8. Clark, P. U., D. Archer, D. Pollard, J. D. Blum, J. A. Rial, V. Brovkin, A. C. Mix, N. G. Pisias, and M. Roy (2006), The middle Pleistocene transition: Characteristics, mechanisms, and implications for long-term changes in atmospheric pCO2, Quat. Sci. Rev., 25, 3150-3184, doi:10.1016/j.quascirev.2006.07.008. (Pubitemid 46209385)
9. Davis, P. T., J. P. Briner, R. D. Coulthard, R. W. Finkel, and G. H. Miller (2006), Preservation of Arctic landscapes overridden by cold-based ice sheets, Quat. Res., 65, 156-163, doi:10.1016/j.yqres.2005.08.019. (Pubitemid 43071951)
10. De Angelis, H. D., and J. Kleman (2007), Palaeo-ice streams in the Foxe/Baffin sector of the Laurentide Ice Sheet, Quat. Sci. Rev., 26, 1313-1331, doi:10.1016/j.quascirev.2007.02.010. (Pubitemid 46880011)
11. Desilets, D., M. Zreda, and T. Prabu (2006), Extended scaling factors for in situ cosmogenic nuclides: New measurements at low latitude, Earth Planet. Sci. Lett., 246, 265-276, doi:10.1016/j.epsl.2006.03.051. (Pubitemid 43842939)
12. Dredge, L. A. (2004), Till geochemistry results, central Baffin Island, Nunavut (NTS 37A, 37D, 27B, 27C), Open File 4543, Geol. Surv. of Can., Ottawa.
13. Huybers, P. (2007), Glacial variability over the last two million years: An extended depth-derived age model, continuous obliquity pacing, and the Pleistocene progression, Quat. Sci. Rev., 26, 37-55, doi:10.1016/j.quascirev. 2006.07.013. (Pubitemid 46037940)
14. Ives, J. D. (1975), Delimitation of surface weathering zones in eastern Baffin Island, northern Labrador, and Arctic Norway: A discussion, Geol. Soc. Am. Bull., 86, 1096-1100, doi:10.1130/0016-7606(1975) 861096:DOSWZI2.0.CO;2.
15. Kessler, M. A., R. S. Anderson, and J. P. Briner (2008), Fjord insertion into continental margins driven by topographic steering of ice, Nat. Geosci., 1, 365-369, doi:10.1038/ngeo201.
16. Marshall, S. J., and P. U. Clark (2002), Basal temperature evolution of North American ice sheets and implications for the 100-kyr cycle, Geo-phys. Res. Lett., 29(24), 2214, doi:10.1029/2002GL015192.
17. MacAyeal, D. R. (1993), Binge/Purge oscillations of the Laurentide Ice Sheet as a cause of the North Atlantic's Heinrich events, Paleoceanogra-phy, 8, 775-784, doi:10.1029/93PA02200.
18. Miller, G. H., J. P. Briner, N. A. Lifton, and R. Finkel (2006), Limited ice-sheet erosion and complex exposure histories derived from in situ cosmogenic Be, Al, and C on Baffin Island, Arctic Canada, Quat. Geochronol., 1, 74-85, doi:10.1016/j.quageo.2006.06.011. (Pubitemid 47285808)
19. Nesbitt, H. W., and G. M. Young (1982), Early Proterozoic climates and plate motions inferred from major element chemistry of lutites, Nature, 299, 715-717, doi:10.1038/299715a0.
20. Raymo, M. E. (1997), The timing of major climate terminations, Paleoceanography, 12, 577-585, doi:10.1029/97PA01169.
21. Roy, M., P. U. Clark, G. M. Raisbeck, and F. Yiou (2004), Geochemical constraints on the regolith hypothesis for the middle Pleistocene transition, Earth Planet. Sci. Lett., 227, 281-296, doi:10.1016/j.epsl.2004. 09.001.
22. Sosdian, S., and Y. Rosenthal (2009), Deep-sea temperature and ice volume changes across the Pliocene-Pleistocene climate transitions, Science, 325, 306-310, doi:10.1126/science.1169938.
23. Staiger, J. W., J. C. Gosse, E. C. Little, D. J. Utting, R. Finkel, J. V. Johnson, and J. Fastook (2006), Glacial erosion and sediment dispersion from detrital cosmogenic nuclide analyses of till, Quat. Geochronol., 1, 29-42, doi:10.1016/j.quageo.2006.06.009. (Pubitemid 47285807)
24. Tippett, C. R. (1985), Glacial dispersal train of Paleozoic erratics, central Baffin Island, N.W.T, Canada, Can. J. Earth Sci., 22, 1818-1826.
25. Tziperman, E., and H. Gildor (2003), On the mid-Pleistocene transition to 100-kyr glacial cycles and the asymmetry between glaciation and deglaciation times, Paleoceanography, 18(1), 1001, doi:10.1029/2001PA000627.
26. Utting, D. J., E. C. Little, M. D. Young, M. W. McCurdy, A. S. Dyke, and I. Girard (2008), Till, stream-sediment and bedrock analyses, North Baffin Island, Nunavut (NTS 37E, F, G, H and 47E), Open File 5742, Geol. Surv. Can., Ottawa.