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Mass Balance and Sliding Velocity of the Puget Lobe of the Cordilleran Ice Sheet During the Last Glaciation

Published online by Cambridge University Press:  20 January 2017

Derek B. Booth
Derek B. Booth*
Affiliation:
U.S. Geological Survey, Quaternary Research Center, University of Washington AK-60, Seattle, Washington 98195
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Abstract

An estimate of the sliding velocity and basal meltwater discharge of the Puget lobe of the Cordilleran ice sheet can be calculated from its reconstructed extent, altitude, and mass balance. Lobe dimensions and surface altitudes are inferred from ice limits and flow-direction indicators. Net annual mass balance and total ablation are calculated from relations empirically derived from modern maritime glaciers. An equilibrium-line altitude between 1200 and 1250 m is calculated for the maximum glacial advance (ca. 15,000 yr B.P.) during the Vashon Stade of the Fraser Glaciation. This estimate is in accord with geologic data and is insensitive to plausible variability in the parameters used in the reconstruction. Resultant sliding velocities are as much as 650 m/a at the equilibrium line, decreasing both up- and downglacier. Such velocities for an ice sheet of this size are consistent with nonsurging behavior. Average meltwater discharge increases monotonically downglacier to 3000 m3/sec at the terminus and is of a comparable magnitude to ice discharge over much of the glacier's ablation area. Paleoclimatic inferences derived from this reconstruction are consistent with previous, independently derived studies of late Pleistocene temperature and precipitation in the Pacific Northwest.

Type
Original Articles
Information
Quaternary Research , Volume 25 , Issue 3 , May 1986 , pp. 269 - 280
Copyright
University of Washington

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References

Alley, N. F. Chatwin, S. C. 1979 Late Pleistocene history and geomorphology, southwestern Vancouver Island, British Columbia. Canadian Journal of Earth Sciences, 16 1645–1657 CrossRefGoogle Scholar
Armstrong, J. E. Crandell, D. R. Easterbrook, D. J. Noble, J. B. 1965 Late Pleistocene stratigraphy and chronology in southwestern British Columbia and northwestern Washington. Geological Society of America Bulletin, 76 321–330 Google Scholar
Booth, D. B. 1984a Glacier Dynamics and the Formation of Glacial Landforms in the Eastern Puget Lowland, Washington. Unpublished Ph.D. dissertation, University of Washington Google Scholar
Booth, D. B. 1984b Ice-sheet reconstruction and erosion by subglacial meltwater in the eastern Puget lowland, Washington. Geological Association of America Abstracts with Programs, 16 450 Google Scholar
Booth, D. B. 1985 Surficial Geologic Map of the Granite Falls 15-Minute Quadrangle, Washington, U.S. Geological Survey Open-File Report 85-517Google Scholar
Booth, D. B. 1986 Surficial Geology of the Skykomish and Snoqualmie Rivers Area. Snokomish and King Counties. Washington, U.S. Geological Survey Miscellaneous Investigations Map 1–1745Google Scholar
Brown, C. S. Meier, M. F. Post, Austin 1982 Calving Speed of Alaska Tidewater Glaciers, with Application to Columbia Glacier, U.S. Geological Survey Professional Paper 1258CGoogle Scholar
Budd, W. F. 1975 A first simple model for periodically self-surging glaciers. Journal of Glaciology, 14 3–21 CrossRefGoogle Scholar
Budd, W. F. Smith, I. N. 1981 The growth and retreat of ice sheets in response to orbital radiation changes. International Association of Hydrologic Sciences, 131 369–409 Google Scholar
Carson, R. J. III 1970 Quaternary Geology of the South-Central Olympic Peninsula. Washington. Unpublished Ph.D. dissertation, University of Washington Google Scholar
Clague, J. J. 1981 Late Quaternary Geology and Geochronology of British Columbia, 2, Geological Survey of Canada, paper 80-35Google Scholar
Crandell, D. R. 1963 Surficial Geology and Geomorphology of the Lake Tapps Quadrangle, Washington, U.S. Geological Survey Professional Paper 388AGoogle Scholar
Dethier, D. P. Safioles, S. A. Pevear, D. R. 1981 Composition of Till from the Clear Lake Quadrangle, Skagit and Snohomish Counties, Washington, U.S. Geological Survey Open-File Report 81-517Google Scholar
Glen, J. W. 1954 The stability of ice-dammed lakes and other water-filled holes in glaciers. Journal of Glaciology, 2 316–318 Google Scholar
Hallet, B. 1979 A theoretical model of glacial abrasion. Journal of Glaciology, 23 39–50 Google Scholar
Heller, P. L. 1980 Multiple ice-flow directions during the Fraser Glaciation in the lower Skagit River drainage. North Cascade Range. Washington. Arctic and Alpine Research, 12 299–308 Google Scholar
Heusser, C. J. 1972 Palynology and phytogeographical significance of a late-Pleistocene refugium near Kalaloch, Washington. Quaternary Research, 2 189–202 Google Scholar
International Association of Hydrological Sciences, 1977 Fluctuations of glaciers, Vol. 3 IAHS-UNESCO, Paris International Commission on Snow and IceGoogle Scholar
Leopold, L. B. Langbein, W. B. 1962 The Concept of Entropy in Landscape Evolution, U.S. Geological Survey Professional Paper 500AGoogle Scholar
Marcus, M. G. Ragle, R. H. 1970 Snow accumulation in the Icefield Ranges, St. Elias Mountains, Yukon. Arctic and Alpine Research, 2 277–292 Google Scholar
Mayo, L. R. 1984 Glacier mass balance and runoff research in the U.S.A.. Geografisker Annelar, 66A 215–227 Google Scholar
Meier, M. F. Post, A. S. 1962 Recent Variations in Mass Net Budgets of Glaciers in Western North America, 63–77 International Association of Scientific Hydrology Publication 58Google Scholar
Meier, M. F. Tangborn, W. V. Mayo, L. R. Post, A. S. 1971 Combined Ice and Water Balances of Gulkana and Wolverine Glaciers, Alaska, and South Cascade Glacier, Washington, 1965 and 1966 Hydrologic Years, U.S. Geological Survey Professional Paper 715AGoogle Scholar
Moran, S. R. Clayton, L. Hooke, R.LeB. Fenton, M. M. Andriashek, L. D. 1980 Glacier-bed landforms of the prairie region of North America. Journal of Glaciology, 25 457–476 Google Scholar
Mullineaux, D. R. Waldron, H. H. Rubin, M. 1965 Stratigraphy and Chronology of Late Interglacial and Early Vashon Glacial Time in the Seattle Area, Washington, U.S. Geological Survey Bulletin 1194-0Google Scholar
Nye, J. F. 1952 The mechanics of glacier flow. Journal of Glaciology, 2 82–93 CrossRefGoogle Scholar
Nye, J. F. 1957 The distribution of stress and velocity in glaciers and ice-sheets. Proceedings of the Royal Society of London Ser. A, 239 113–133 Google Scholar
Nye, J. F. 1963 The response of a glacier to changes in the rate of nourishment and wastage. Proceedings of the Royal Society of London Ser. A, 275 87–112 Google Scholar
Paterson, W. S. B. 1981 The Physics of Glaciers, Pergamon, Oxford Google Scholar
Pierce, K. L. 1979 History and Dynamics of Glaciation in the Northern Yellowstone National Park Area, U.S. Geological Survey Professional Paper 729FGoogle Scholar
Porter, S. C. 1975 Equilibrium-line altitudes of late Quaternary glaciers in the southern Alps. New Zealand. Quaternary Research, 5 27–47 CrossRefGoogle Scholar
Porter, S. C. 1977 Present and past glaciation threshold in the Cascade Range, Washington. U.S.A.: Topographic and climatic controls, and paleoclimatic implications. Journal of Glaciology, 18 101–116 CrossRefGoogle Scholar
Porter, S. C. Pierce, K. L. Hamilton, T. D. 1983 Late Wisconsin mountain glaciation in the western United States Wright, H. E. Jr. Porter, S. C. Late-Quaternary Environments of the United States, Univ. of Minnesota Press, Minneapolis 71–111 Google Scholar
Post, A. S. 1969 Distribution of surging glaciers in western North America. Journal of Glaciology, 8 229–240 CrossRefGoogle Scholar
Prest, V. K. Grant, D. R. Rampton, V. N. 1968 Glacial Map of Canada, (compilers)Google Scholar
Rigg, G. B. Gould, H. R. 1957 Age of Glacier Peak eruption and chronology of postglacial peat deposits in Washington and surrounding areas. America Journal of Science, 255 341–363 CrossRefGoogle Scholar
Rosengreen, T. E. 1965 Surficial Geology of the Maple Valley and Hobart Quadrangles, Washington. Unpublished M.S. thesis, University of Washington Google Scholar
Rothlisberger, H. 1968 Erosive processes which are likely to accentuate or reduce the bottom relief of valley glaciers. International Association of Scientific Hydrologists, 79 87–97 Google Scholar
Shreve, R. L. 1972 Movement of water in glaciers. Journal of Glaciology, 11 205–214 Google Scholar
Thorson, R. M. 1980 Ice sheet glaciation of the Puget lowland, Washington, during the Vashon Stade. Quaternary Research, 13 303–321 Google Scholar
U.S. Department of Commerce, 1979 World Weather Records 1961–1970, Vol. 1 U.S. Government Printing Office Google Scholar
Waitt, R. B. Jr. Thorson, R. M. 1983 The Cordilleran ice sheet in Washington, Idaho, and Montana Wright, H. E. Jr. Porter, S. C. Late-Quaternary Environments of the United States, Univ. of Minnesota Press, Minneapolis 53–70 Google Scholar
Weertman, J. 1964 Rate of growth or shrinkage of non-equilibrium ice sheets. Journal of Glaciology, 5 145–158 CrossRefGoogle Scholar
Wilson, J. T. Falconer, G. Mathews, W. H. Prest, V. K. 1958 Glacial Map of Canada, Geological Association of Canada (compilers)Google Scholar