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Stratigraphic evidence for multiple drainings of glacial Lake Missoula along the Clark Fork River, Montana, USA

Published online by Cambridge University Press:  17 July 2006

Larry N. Smith
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Abstract

Glacial Lake Missoula, a source of Channeled Scabland flood waters, inundated valleys of northwest Montana to altitudes of ∼ 1265 m and to depths of >600 m, as evidenced by shorelines and silty lacustrine deposits. This study describes previously unrecognized catastrophic lake-drainage deposits that lie stratigraphically beneath the glacial-lake silts. The unconsolidated gravelly flood alluvium contains imbricated boulder-sized clasts, cross-stratified gravel with slip-face heights of 2–> 35 m, and 70- to 100-m-high gravel bars which all indicate a high-energy, high-volume alluvial environment. Gravel bars and high scablands were formed by catastrophic draining of one or possibly more early, high lake stands (1200–1265 m). Most glacial-lake silt, such as the Ninemile section, was deposited stratigraphically above the earlier deposits, represents a lower lake stand(s) (1050–1150 m), and was not deposited in lake(s) responsible for the highest discharge events. The glaciolacustrine silt-covered benches are incised by relict networks of valleys formed during the drainage of the last glacial lake. Significant erosion associated with the last lake draining was confined to the inner Clark Fork River canyon.

Keywords

Catastrophic floodsChanneled ScablandGlacial Lake MissoulaLate PleistoceneNinemile section
Type
Research Article
Information
Quaternary Research , Volume 66 , Issue 2 , September 2006 , pp. 311 - 322
Copyright
University of Washington

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References

Alden, W.C. Physiography and Glacial Geology of Western Montana and Adjacent Areas. U.S. Geological Survey Professional Paper 231, (1953). CrossRefGoogle Scholar
Alt, D. Glacial Lake Missoula and its Humongous Floods. (2001). Mountain Press, Missoula.Google Scholar
Alt, D., and Chambers, R.L. Repetition of the Spokane flood: American Quaternary Association Meeting 1, Yellowstone Park and Bozeman, Montana, Abstracts. (1970). Montana State University, Bozeman. 1 Google Scholar
Atwater, B.F., Smith, G.A., and Waitt, R.B. The Channeled Scabland: back to Bretz? Comment. Geology 28, (2000). 574–575.Google Scholar
Baker, V.R. Paleohydrology and sedimentology of Lake Missoula flooding in eastern Washington. Special Paper - Geological Society of America 144, (1973). Google Scholar
Baker, V.R. Paleohydraulics and hydrodynamics of Scabland floods. Baker, V.R., and Nummedal, D. The Channeled Scabland. (1978). NASA Office of Space Science, 59–79.Google Scholar
Benito, G., and O'Connor, J.E. Number and size of last-glacial Missoula floods in the Columbia River valley between the Pasco Basin, Washington, and Portland, Oregon. Geological Society of America Bulletin 115, (2003). 624–638.Google Scholar
Blair, T.C., and McPherson, J.G. Grain-size and textural classification of coarse sedimentary particles. Journal of Sedimentary Research 69, (1999). 6–19.Google Scholar
Booth, D.B., Troost, K.G., Clague, J.J., and Waitt, R.B. The Cordilleran ice sheet. Gillespie, A.R., Porter, S.C., and Atwater, B.F. The Quaternary Period in the United States. Developments in Quaternary Science vol. 1, (2004). Elsevier, Amsterdam. 17–43.Google Scholar
Bretz, J.H. The Channeled Scablands of the Columbia Plateau. Journal of Geology 31, (1923). 617–649.Google Scholar
Bretz, J.H. The Channeled Scabland of eastern Washington. Geographical Review 18, (1928). 446–477.Google Scholar
Bretz, J.H. The Lake Missoula floods and the Channeled Scabland. Journal of Geology 77, (1969). 505–543.Google Scholar
Bretz, J.H., Smith, H.T.U., and Neff, G.E. Channeled Scabland of Washington: new data and interpretations. Geological Society of America Bulletin 67, (1956). 957–1049.Google Scholar
Carling, P.A., Kirkbride, A.D., Parnachov, S., Borodavko, P.S., and Berger, G.W. Late Quaternary catastrophic flooding in the Altai Mountains of south-central Siberia: a synoptic overview and an introduction to flood deposit sedimentology. Martini, I.P., Baker, V.R., and Garzon, G. Flood and Megaflood Processes and Deposits: Recent and Ancient Examples. International Association of Sedimentologists Special Publication vol. 32, (2002). 17–35.Google Scholar
Chambers, R.L., (1971). Sedimentation in glacial Lake Missoula. MS thesis, University of Montana, Missoula.Google Scholar
Chambers, R.L. Sedimentary evidence for multiple glacial Lakes Missoula. McBane, J.D., and Garrison, P.B. Northwest Montana and Adjacent Canada. (1984). Montana Geological Society, Billings. 189–199.Google Scholar
Clague, J.J., Barendregt, R., Enkin, R.J., Foit, F.F. Jr. Paleomagnetic and tephra evidence for tens of Missoula floods in southern Washington. Geology 31, (2003). 247–250.Google Scholar
Curry, R.R. Glacial Geology of Flathead Valley and Catastrophic Drainage of Glacial Lake Missoula. Geological Society of America, Rocky Mountain Section Field Guide vol. 4, (1977). University of Montana, Missoula.Google Scholar
Fritz, W.J., and Smith, G.A. Revisiting the Ninemile section: problems with relating glacial Lake Missoula stratigraphy to the Scabland-floods stratigraphy. Eos, Transactions-American Geophysical Union 74, 43 supplement (1993). 302 Google Scholar
Komar, P.D. Modes of sediment transport in channelized water flows with ramifications to the erosion of the Martian outflow channels. Icarus 37, (1980). 156–181.Google Scholar
Komar, P.D. Shapes of streamlined islands on Earth and Mars: experiments and analyses of the minimum-drag form. Geology 11, (1983). 651–654.Google Scholar
Komar, P.D. The lemniscate loop-comparisons with the shapes of streamlined landforms. Journal of Geology 92, (1984). 133–145.Google Scholar
Langton, C.M. Geology of the northeastern part of the Idaho Batholith and adjacent region in Montana. Journal of Geology 43, (1935). 27–60.Google Scholar
Levish, D.R., (1997). Late Pleistocene sedimentation in glacial Lake Missoula and revised glacial history of the Flathead Lobe of the Cordilleran Ice Sheet, Mission valley, Montana. PhD dissertation, University of Colorado, Boulder.Google Scholar
Locke, W., and Smith, L.N. Pleistocene mountain glaciation in Montana, USA. Ehlers, J., and Gibbard, P.L. Extent and Chronology of Glaciations. (2004). Elsevier, Amsterdam. 117–121.Google Scholar
Lonn, J.D., McFaddan, M.D., (1999). Geologic map of the Wallace 30′ × 60′ quadrangle. Montana Bureau of Mines and Geology Open File Report 388, scale 1:100,000.Google Scholar
Lonn, J.D., Smith, L.N., (2005). Geologic map of the Tarkio and Lozeau 7.5′ quadrangles, western Montana. Montana Bureau of Mines and Geology Open-File Report 516, scale 1:24,000.Google Scholar
McDonald, E.V., and Busacca, A.J. Record of pre-late Wisconsin giant floods in the Channeled Scabland interpreted from loess deposits. Geology 16, (1988). 728–731.Google Scholar
O'Connor, J.E. Hydrology, Hydraulics, and Geomorphology of the Bonneville Flood. Geological Society of America Special Paper 274, (1993). Google Scholar
O'Connor, J.E., and Baker, V.R. Magnitudes and implications of peak discharges from glacial Lake Missoula. Geological Society of America Bulletin 104, (1992). 267–279.Google Scholar
Pardee, J.T. The glacial Lake Missoula, Montana. Journal of Geology 18, (1910). 376–386.Google Scholar
Pardee, J.T. Unusual currents in glacial Lake Missoula, Montana. Geological Society of America Bulletin 53, (1942). 1569–1599.Google Scholar
Pluhar, C.J., Bjornstad, B.C., Reidel, S.P., Coe, R.S., and Nelson, P.B. Magnetostratigraphic evidence from the Cold Creek bar for onset of ice-age cataclysmic floods in eastern Washington during the early Pleistocene. Quaternary Research 65, (2006). 123–135.Google Scholar
Shaw, J., Munro-Stasiuk, M., Sawyer, B., Beaney, C., Lesemann, J.-E., Musacchio, A., Rains, B., and Young, R.R. The Channeled Scabland: back to Bretz?. Geology 27, (1999). 605–608.Google Scholar
Shaw, J., Munro-Stasiuk, M., Sawyer, B., Beaney, C., Lesemann, J.-E., Musacchio, A., Rains, B., and Young, R.R. The Channeled Scabland: back to Bretz? Reply. Geology 28, (2000). 576 Google Scholar
Smyers, N.B., and Breckenridge, R.M. Glacial Lake Missoula, Clark Fork ice dam, and the floods outburst area: Northern Idaho and western Montana. Swanson, T.W. Western Cordillera and Adjacent Areas. Geological Society of America Field Guide vol. 4, (2003). 1–15.Google Scholar
U.S. Forest Service, (1998). Glacial Lake Missoula and the Channeled Scabland: A Digital Portrait of Landforms of the Last Ice Age, Washington, Oregon, Northern Idaho, Western Montana. U. S. Forest Service Region 1, Missoula. scale 1:1,000,000.Google Scholar
Waitt, R.B. About forty last-glacial Lake Missoula jökulhlaups through southern Washington. Journal of Geology 88, (1980). 653–679.Google Scholar
Waitt, R.B. Case for periodic, colossal jökulhlaups from Pleistocene glacial Lake Missoula. Geological Society of America Bulletin 96, (1985). 1271–1286.Google Scholar