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Late Wisconsin History North of the Giants Range, Northern Minnesota, Inferred from Complex Stratigraphy

Published online by Cambridge University Press:  20 January 2017

Svante Björck*
Affiliation:
Department of Quaternary Geology, Lund University, Tornav 13, S-223, 63 Lund, Sweden Limnological Research Center, Pillsbury Hall, University of Minnesota, Minneapolis, Minnesota 55455 USA

Abstract

In an area north of the Giants Range in northeastern Minnesota the late Wisconsin glacial and extraglacial lithostratigraphy shows that, apart from one occurrence of red clayey till, the deposits can be related to the deglaciation of the Rainy Lobe, the margin of which retreated northward, leaving debris-rich ice behind. By a combination of pollen stratigraphy, lithostratigraphy, and chronostratigraphy of lake sediments in this area, together with multivariate numerical analyses of the data set, a “hiatus” stratigraphy was set up. Combined with the glacial and extraglacial stratigraphy, it shows that the area of Glacial Lake Norwood was possibly later filled with sediments, between masses of stagnant ice, following a damming of drainge in the south by the St. Louis Sublobe. The area was drained through the Embarrass channel when the St. Louis Sublobe retreated. Then followed the drainage of Lake Koochiching through the Embarrass channel. At ca. 10,200 14C yr B.P. the area apparently became free of stagnant ice as normal lake sedimentation began in all lakes studied. A lake-level rise is indicated ca. 1000 yr later. Apart from a long-lasting phase of birch tundra parkland between ca. 12,000 (or 11,500?) and 10,600 14C yr B.P., the general pollen stratigraphy fits into the regional picture with a more or less undisturbed and gradual plant immigration from the time of the culmination of the St. Louis Sublobe.

Type
Articles
Copyright
University of Washington

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Footnotes

Contribution 368, Limnological Research Center, University of Minnesota.

References

Amundson, D. C. Wright, H. E. Jr. Forest changes in Minnesota at the end of the Pleistocene. Ecological Monographs, 1979 1979 1 16 CrossRefGoogle Scholar
Birks, H. J. B. Late-Wisconsinan vegetational history at Wolf Creek, central Minnesota. Ecological Monographs, 46 1976 395 429 CrossRefGoogle Scholar
Birks, H. J. B. Late Wisconsinan vegetational and climatic history at Kylen Lake, northeastern Minnesota. Quaternary Research, 16 1981 60 86 CrossRefGoogle Scholar
Björck, S. Deglaciation chronology and revegetation in northwestern Ontario. Canadian Journal of Earth Sciences, 22 1985 850 871 CrossRefGoogle Scholar
Björck, S. Håkansson, S. Radiocarbon dates from Late Weichselian lake sediments in South Sweden as a basis for chronostratigraphic subdivision. Boreas, 11 1982 141 150 CrossRefGoogle Scholar
Björck, S. Persson, T. Kristersson, I. Comparison of two concentration methods for pollen in minerogenic sediments. Geologiska Föreningens i Stockholm Förhandlingar, 100 1978 107 111 CrossRefGoogle Scholar
Clayton, L. Chronology of Lake Agassiz drainage to Lake Superior. Glacial Lake Agassiz.Teller, J. T. Cayton, Lee Geological Association of Canada Special Paper 26, 1983 291 307 Google Scholar
Clayton, L. Moran, S. R. Chronology of Late Wisconsinan glaciation in Middle North America. Quaternary Science Review, 1 1982 55 82 CrossRefGoogle Scholar
Craig, A. J. Pollen influx to laminated sediments: A pollen diagram from northeastern Minnesota. Ecology, 53 1972 46 57 CrossRefGoogle Scholar
Cushing, E. J. Late-Wisconsin pollen stratigraphy and the glacial sequence in Minnesota.Cushing, E. J. Wright, H. E. Jr. Quaternary Paleoecology.1967 Yale Univ. Press New Haven, CT 59 88 Google Scholar
Faegri, K. Iversen, J. 3rd ed. Textbook of Pollen Analysis, 1975 Blackwell Scientific Oxford Google Scholar
Florin, M.-B. Wright, H. E. Jr. Diatom evidence for the persistence of stagnant glacial ice in Minnesota. Geological Society of America Bulletin, 80 1969 695 704 CrossRefGoogle Scholar
Fries, M. Pollen profiles of Late Pleistocene and Recent sediments from Weber Lake, Minnesota. Ecology, 43 1962 295 308 CrossRefGoogle Scholar
Greenacre, M. J. Practical correspondence analysis.Barnett, V. Interpreting Multivariate Data.1984 Wiley New York 119 146 Google Scholar
Hill, M. O. Correspondence analysis: A neglected multivariate method. Applied Statistics, 23 1974 340 354 CrossRefGoogle Scholar
Hobbs, H. C. Drainage relationships of Glacial Lakes Aitkin and Upham and early Lake Agassiz in northastern Minnesota. Glacial Lake Agassiz.Teller, J. T. Clayton, Lee Geological Association of Canada Special Paper 26, 1983 245 259 Google Scholar
Jacobson, G. L. Jr. Webb, T. III Grimm, E. C. Patterns and rates of vegetation change during the deglaciation of eastern North America.Ruddiman, W. R. Wright, H. E. Jr. Geology of North America, Vol. K-3 1987 Geological Society of America Boulder, CO 277 288 North America and Adjacent Oceans during the Last Deglaciation Google Scholar
Stockmarr, J. Tablets with spores used in absolute pollen analysis. Pollen et Spores, 13 1971 615 621 Google Scholar
Winchell, N. H. Glacial lakes of Minnesota. Geological Society of America Bulletin, 12 1901 109 128 CrossRefGoogle Scholar
Winter, T. C. Sequence of Glaciation in the Mesabi-Vermillion Iron Range Area, Northeastern Minnesota. U.S. Geological Survey Professional Paper, 750-C 1971 C82 C88 Google Scholar
Winter, T. C. Hydrogeology of Glacial Drift, Mesabi Range, Northeastern Minnesota. U.S. Geological Survey Water-Supply Paper, 2029-A 1973 A1 A23 Google Scholar
Winter, T. C. Cotter, R. D. Young, H. L. Petrography and Stratigraphy of Glacial Drift, Mesabi-Vermilion Iron Range Area, Northeastern Minnesota. U.S. Geological Survey Bulletin, 1331-C 1973 C1 C41 Google Scholar
Wright, H. E. Jr. A square-rod piston sampler for lake sediments. Journal of Sedimentary Petrology, 37 1967 975 976 CrossRefGoogle Scholar
Wright, H. E. Jr. Glacial fluctuations and the forest succession in the Lake Superior area. Proceedings of the 12th Conference on Great Lakes Research 1969.1969 397 405 Google Scholar
Wright, H. E. Jr. Quaternary history of Minnesota.Sims, P. K. Morey, G. B. Geology of Minnesota.1972 Minnesota Geological Survey 515 548 Google Scholar
Wright, H. E. Jr. Tunnel valleys, glacial surges, and subglacial hydrology of the Superior Lobe, Minnesota. Geological Society of America Memoir, 136 1973 251 276 CrossRefGoogle Scholar
Wright, H. E. Jr. Watts, W. A. Glacial and Vegetational History of Northeastern Minnesota. Special Publication Series, SP-11 1969 Minnesota Geological Survey 1 59 Google Scholar
Wright, H. E. Jr. Winter, T. C. Patten, H. L. Two pollen diagrams from southeastern Minnesota: Problems in the late and postglacial vegetational history. Geological Society of America Bulletin, 74 1963 1371 1396 CrossRefGoogle Scholar