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Glacier Peak Tephra in the North Cascade Range, Washington: Stratigraphy, Distribution, and Relationship to Late-Glacial Events

Published online by Cambridge University Press:  20 January 2017

Stephen C. Porter
Stephen C. Porter*
Affiliation:
Quaternary Research Center, University of Washington, Seattle, Washington 98195 USA
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Abstract

Pumiceous tephra, resulting from multiple eruptions of Glacier Peak volcano in late-glacial time, mantles much of the landscape in the eastern North Cascade Range and extends eastward beyond the Columbia River as a thinner discontinuous deposit. Within about 25 km of the source, the tephra is divisible into as many as nine layers, distinguishable in the field on the basis of color, grain size, thickness, and stratigraphic position. Three principal layers, designated G (oldest), M, and B, are separated from one another by thinner, finer layers. Layer G has been found as far east as Montana and southern Alberta, whereas layer B has been identified as far as western Wyoming. By contrast, layer M trends nearly south, paralleling the crest of the Cascade Range. Available 14C dates indicate that the tephra complex was probably deposited between about 12,750 and 11,250 years ago. Glacier Peak tephra overlies moraines and associated outwash east of the Cascade Crest that were deposited about 14,000 years ago. Unreworked tephra occurs within several kilometers of many valley heads implying that major valley glaciers had nearly disappeared by the time of the initial tephra fall. Distribution of tephra indicates that the southern margin of the Cordilleran Ice Sheet had retreated at least 80 km north of its terminal moraine on the Waterville Plateau by the time layer G was deposited. Late-glacial moraines of the Rat Creek advance lie within the fallout area of layer M but lack the tephra on their surface implying that they were built subsequent to the eruption of this unit. Moraines of the Hyak advance at Snoqualmie Pass, which are correlated with the Rat Creek moraines farther north, were constructed prior to 11,000 14C years ago. The late-glacial advance along the Cascade Crest, therefore, apparently culminated between about 12,000 and 11,000 14C years ago and was broadly in phase with the Sumas readvance of the Cordilleran Ice Sheet in the Fraser Lowland which occurred between about 11,800 and 11,400 14C years ago.

Type
Original Articles
Information
Quaternary Research , Volume 10 , Issue 1 , July 1978 , pp. 30 - 41
Copyright
University of Washington

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References

Armstrong, J.E., 1975. Quaternary geology, stratigraphic studies and revaluation of terrain inventory maps, Fraser Lowland, British Columbia. Geological Survey of Canada Paper 75-1. 377-380 Part A.Google Scholar
Benedict, J.B., 1973. Chronology of cirque glaciation, Colorado Front Range. Quaternary Research. 3, 584-599.Google Scholar
Birkeland, P.W., 1964. Pleistocene glaciation of the northern Sierra Nevada, north of Lake Tahoe, California. Journal of Geology. 72, 810-825.CrossRefGoogle Scholar
Birman, J.H., 1964. Glacial geology across the crest of the Sierra Nevada, California. Geological Society of America Special Paper 75. .CrossRefGoogle Scholar
Carithers, W., 1946. Pumice and pumicite occurrences of Washington. Washington Division of Mines and Geology Report of Investigations 15. .Google Scholar
Crandell, D.R., Miller, R.D., 1974 Quaternary Stratigraphy and Extent of Glaciation in the Mount Rainier Region, Washington. U. S. Geological Survey Professional Paper 847.Google Scholar
Currey, D.R., 1974. Probable pre-Neoglacial age of the type Temple Lake moraine, Wyoming. Arctic and Alpine Research. 6, 293-300.Google Scholar
Denton, G.H., 1974. Quaternary glaciations of the White River Valley, Alaska. with a regional synthesis for the northern St. Elias Mountains, Alaska and Yukon Territory. Geological Society of America Bulletin. 85, 871-892.2.0.CO;2>CrossRefGoogle Scholar
Fisher, R.125., 1964. Maximum size, medium diameter, and sorting of tephra. Journal of Geophysical Research. 69, 341-355.Google Scholar
Fryxell, R., 1965. Mazama and Glacier Peak volcanic ash layers; relative ages. Science. 147, 1288-1290.Google Scholar
Fryxell, R., 1972. Relationship of late Quaternary volcanic ash layers to geomorphic history of the Columbia Basin, Washington. Geological Society of America Abstracts with Programs. 4, 159.Google Scholar
Hamilton, T.D., Porter, S.C., 1975. Itkillik glaciation in the Brooks Range, northern Alaska. Quaternary Research. 5, 471-497.CrossRefGoogle Scholar
Harris, S.A., Howell, J., 1977. Chateau Lake Louise moraines—Evidence for a new Holocene glacial event in southwest Alberta. Bulletin of Canadian Petroleum Geology. 25, 441-455.Google Scholar
Ives, P.C., Levin, B., Oman, C.L., Rubin, M., 1967. U. S. Geological Survey radiocarbon dates, IX. Radiocarbon. 9, 505-529.Google Scholar
Kiver, E.P., 1974. Holocene glaciation in the Wallowa Mountains, Orgeon. Mahoney, W.C., Quaternary Environments. York University Geographical Monograph 5. 169-195.Google Scholar
Lemke, R.W., Mudge, M.R., Wilcox, R.E., Powers, H.A., 1975. Geologic setting of the Glacier Peak and Mazama ash-bed markers in westcentral Montana. U. S. Geological Survey Bulletin. 1395-H.Google Scholar
Mehringer, P.J., Blinman, E., Peterson, K.L., 1977. Pollen influx and volcanic ash. Science. 198, 257-261.CrossRefGoogle ScholarPubMed
Mercer, J.H., 1976. Glacial history of southern-most South America. Quaternary Research. 6, 125-166.Google Scholar
Miller, C.D., Birkeland, P.W., 1974. Probable pre-Neoglacial age of the type Temple Lake moraine, Wyoming: Discussion and additional relative-age data. Arctic and Alpine Research. 6, 301-306.Google Scholar
Mullineaux, D.R., 1974. Pumice and other pyroclastic deposits in Mount Rainier National Park, Washington. U. S. Geological Survey Bulletin. 1326.Google Scholar
Mullineaux, D.R., Hyde, J.H., Rubin, M., 1975. Widespread late-glacial and postglacial tephra deposits from Mount St. Helens volcano, Washington. Journal of Research of the U. S. Geological Survey. 3, 329-335.Google Scholar
Mullineaux, D.R., Wilcox, R.E., Ebaugh, W.F., Fryxell, R., Rubin, M., 1977. Age of the last major Scabland flood of eastern Washington, as inferred from associated ash beds of Mount St. Helens Set S. Geological Society of America Abstracts with Programs. 9, 1105.Google Scholar
Page, B.M., 1939. Multiple glaciation in the Leaven-worth area, Washington. Journal of Geology. 47, 785-815.CrossRefGoogle Scholar
Porter, S.C., 1969. Pleistocene geology of the east-central Cascade Range, Washington. Guide-book for Pacific Coast Friends of the Pleistocene Field Conference. .Google Scholar
Porter, S.C., 1970. Glacier recession in the southern and central Puget Lowland, Washington between 14,000 and 13,000 years B.P.. Abstracts, First AMQUA Biennial Meeting. 107.Google Scholar
Porter, S.C., 1973. Stratigraphy and chronology of late Quaternary tephra along the south rift zone of Mauna Kea volcano, Hawaii. Geological Society of American Bulletin. 84, 1923-1940.2.0.CO;2>CrossRefGoogle Scholar
Porter, S.C., 1976a. Pleistocene glaciation in the southern part of the North Cascade Range, Washington. Geological Society of America Bulletin. 87, 61-75.2.0.CO;2>CrossRefGoogle Scholar
Porter, S.C., 1976b. Stratigraphy and distribution of tephra from Glacier Peak (of 12,000 years ago) in the Northern Cascade Range, Washington. U. S. Geological Survey Open File Map. 76-186.Google Scholar
Powers, H.A., Wilcox, R.E., 1964. Volcanic ash from Mount Mazama (Crater Lake) and from Glacier Peak. Science. 144, 1334-1336.Google Scholar
Scott, W.E., 1977. Quaternary glaciation and volcanism, Metolius River area, Oregon. Geological Society of America Bulletin. 88, 113-124.Google Scholar
Smith, H.W., Okazaki, R., Knowles, C.R., 1977. Electron microprobe data for tephra attributed to Glacier Peak, Washington. Quaternary Research. 7, 197-206.Google Scholar
Waitt, R.B. Jr., 1972. Geomorphology and glacial geology of the Methow drainage Basin, eastern North Cascade Range, Washington. Unpublished Ph.D. disssertation. University of Washington. Google Scholar
Walker, G.P.L., 1971. Grain-size characteristics of pyroclastic deposits. Journal of Geology. 79, 696-714.CrossRefGoogle Scholar
Westgate, J.A., Smith, D.G.W., Tomlinson, M., 1970. Late Quaternary tephra layers in south-western Canada. Smith, R.A., Smith, J.W., Early Man and Environments in Northwest North America. Students Press, University of Calgary, 13-34.Google Scholar
Wilcox, R.E., 1969. Airfall deposits of two closely spaced eruptions in late glacial time from Glacier Peak volcano, Washington. Geological Society of America Abstracts with Programs. 1, 88-89.Google Scholar