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Use of Lacustrine Sedimentary Sequences as Indicators of Holocene Glacial History, Banff National Park, Alberta, Canada

Published online by Cambridge University Press:  20 January 2017

Eric M. Leonard
Eric M. Leonard*
Affiliation:
Department of Geology, Colorado College, Colorado Springs, Colorado 80903
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Abstract

Bottom sediments from three lakes in the Canadian Rocky Mountains were examined with the aim of evaluating the usefulness of downvalley sediment studies in reconstruction of Holocene glacial histories. Analyses of organic carbon and carbonate contents of core sediments provide information on changing sedimentation rate and changing relative importance of glacial and non-glacial sediment sources. Sedimentary histories of the three lakes are similar, suggesting that they record regional glacial/climatic forcing, rather than localized events, and thus that they may be useful in reconstructing Holocene glacial history. Lacustrine sediments indicate a period of high sedimentation rates and relatively large glacial sediment contribution prior to 7500-7000 yr B.P., with much reduced rates and decreased glacial sediment contribution between about 6000 and 4000 yr B.P., possibly interrupted by a brief period of increased glacial sediment output shortly after 5000 yr B.P. Sometime after 4000 yr B.P., sedimentation rates and glacial sediment output began to rise again, reaching approximately present levels by 2750-2650 yr B.P., and have not since returned to low mid-Holocene levels. In detail over the last 3000 yr there is some indication of a slight decrease in sedimentation rate for more than 1000 yr after about 2200 yr B.P. Sedimentation rates and glacial sediment input into all three lakes rose between about 900 and 750 yr B.P. and have remained very high since. If the lake sediments are interpreted as a proxy record of upvalley glacial activity, they allow the development of a glacial chronology which is at once generally consistent with, and more complete and easily datable than, the surficial glacial record.

Type
Research Article
Information
Quaternary Research , Volume 26 , Issue 2 , September 1986 , pp. 218 - 231
Copyright
University of Washington

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References

Alley, N.F.(1976).Post-Pleistocene glaciations in the interior of British Columbia (abst.) Geomorphology of the Canadian Cordillera and its bearing on Mineral Deposits Cordilleran Section, Geological Association of Canada Vancouver, B.C., Canada 6 7 Google Scholar
Allison, L.E.(1965).Organic carbon Black, C.A. Methods of Soil Analysis American Association of Agronomy Madison, Wisc 1367 1378 Google Scholar
Church, M. Ryder, J.M.(1972).Paraglacial sedimentation: A consideration of fluvial processes conditioned by glaciation Geological Society of America Bulletin 83 3059 3072 Google Scholar
Duford, J.M. Osborn, G.D.(1978).Holocene and latest Pleistocene cirque glaciations in the Shuswap Highland, Britisth Columbia Canadian Journal of Earth Sciences 15 865 873 CrossRefGoogle Scholar
Fulton, R.J.(1971).Radiocarbon Geochronology of Southern British Columbia Geological Survey of Canada Paper 71-37CrossRefGoogle Scholar
Gardner, J.S. Jones, N.K.(1985).Evidence for a Neoglacial advance of the Boundary Glacier, Banff National Park, Alberta Canadian Journal of Earth Sciences 22 1753 1755 CrossRefGoogle Scholar
Gibbons, A.B. Megeath, J.D. Pierce, K.L.(1984).Probability of moraine survival in a succession of glacial advances Geology 12 327 330 Google Scholar
Karlén, W.(1976).Lacustrine sediments and tree-line variations as indicators of climatic fluctuations in Lappland, northern Sweden Geografiska Annaler 58A 1 34 Google Scholar
Karlén, W.(1981).Lacustrine sediment studies: A technique to obtain a continuous record of Holocene glacier variations Geografiska Annaler 63A 273 281 Google Scholar
Kearney, M.S. Luckman, B.H.(1981).Evidence for late-Wisconsin-early Holocene climatic/vegetational change in Jasper National Park, Alberta Mahaney, W.C. Quarternary Paleoclimate Geoabstracts Norwich, U.K 85 105 Google Scholar
Kennedy, S.K.(1975).Sedimentation in a Glacier-Fed Lake Unpublished M.S. thesis University of Illinois Chicago Circle Google Scholar
Leonard, E.M.(1981).Glaciolacustrine Sedimentation and Holocene Glacial History, Northern Banff National Park, Alberta Unpublished Ph.D. dissertation University of Colorado Google Scholar
Leonard, E.M.(1985).Glaciological and climatic controls on lake sedimentation, Canadian Rocky Mountains Zeitschrift für Gletcherkunde und Glazialgeologie 21 35 42 Google Scholar
Leonard, E.M.(1986).Varve studies at Hector Lake, Alberta, Canada, and the relationship between glacial activity and sedimentation Quaternary Research 25 199 214 Google Scholar
Luckman, B.H.(1985).Reconstructing Little Ice Age events in the Canadian Rockies (abst.) CANQUA Symposium on the Paleoenvironmental Reconstruction of the Late Wisconsin Deglaciation and the Holocene 40 Google Scholar
Luckman, B.H. Osborn, G.D.(1979).Holocene glacier fluctuations in the middle Canadian Rocky Mountains Quaternary Research 11 52 77 Google Scholar
Mathewes, R.W. Westgate, J.A.(1980).Bridge River tephra: Revised distribution and significance for detecting old carbon errors in radiocarbon dates of limnic sediments in southern British Columbia Canadian Journal of Earth Sciences 12 1454 1461 Google Scholar
Nasmith, H. Mathews, W.H. Rouse, G.E.(1967).Bridge River Ash and some other recent ash beds in British Columbia Canadian Journal of Earth Sciences 4 163 170 CrossRefGoogle Scholar
Osborn, G.(1982).Holocene glacier and climate fluctuations in the southern Canadian Rocky Mountains: A review Striae 18 15 25 Google Scholar
Osborn, G.(1984).2000 Year History of the Bugaboo Glacier, Purcell Mountains, British Columbia American Quaternary Association Abstracts, 8th biennial meeting 97 Google Scholar
Porter, S.C.(1974).Holocene Glacier Fluctuations American Quaternary Association Abstracts, 3rd biennial meeting 68 72 Google Scholar
Price, R.A. Mountjoy, E.W.(1978a).Geology, Hector Lake (East Half) Geological Survey of Canada Map 1463AGoogle Scholar
Price, R.A. Mountjoy, E.W.(1978b).Geology, Hector Lake (West Half) Geological Survey of Canada Map 1464AGoogle Scholar
Ryder, J.M. Thompson, B.(1986).Neoglaciation in the southern Coast Mountains of British Columbia: Chronology prior to the late Neoglacial maximum Canadian Journal of Earth Sciences 23 273 287 CrossRefGoogle Scholar
Sarna-Wojcicki, A.M. Champion, D.E. Davis, J.O.(1983).Holocene volcanism in the conterminous United States and the role of silicic volcanic ash layers in correlation of latest Pleistocene and Holocene deposits Wright, H.E. Late Quaternary Environments of the United States Vol. 2 52 77 “The Holocene”Google Scholar
Smith, N.D.(1978).Sedimentation processes and patterns in a glacier-fed lake with low sediment input Canadian Journal of Earth Sciences 15 741 756 CrossRefGoogle Scholar