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A late Quaternary record of eolian silt deposition in a maar lake, St. Michael Island, western Alaska

  • Daniel R. Muhs (a1), Thomas A. Ager (a1), Josh Been (a1), J. Platt Bradbury (a2) and Walter E. Dean (a3)...


Recent stratigraphic studies in central Alaska have yielded the unexpected finding that there is little evidence for full-glacial (late Wisconsin) loess deposition. Because the loess record of western Alaska is poorly exposed and not well known, we analyzed a core from Zagoskin Lake, a maar lake on St. Michael Island, to determine if a full-glacial eolian record could be found in that region. Particle size and geochemical data indicate that the mineral fraction of the lake sediments is not derived from the local basalt and is probably eolian. Silt deposition took place from at least the latter part of the mid-Wisconsin interstadial period through the Holocene, based on radiocarbon dating. Based on the locations of likely loess sources, eolian silt in western Alaska was probably deflated by northeasterly winds from glaciofluvial sediments. If last-glacial winds that deposited loess were indeed from the northeast, this reconstruction is in conflict with a model-derived reconstruction of paleowinds in Alaska. Mass accumulation rates in Zagoskin Lake were higher during the Pleistocene than during the Holocene. In addition, more eolian sediment is recorded in the lake sediments than as loess on the adjacent landscape. The thinner loess record on land may be due to the sparse, herb tundra vegetation that dominated the landscape in full-glacial time. Herb tundra would have been an inefficient loess trap compared to forest or even shrub tundra due to its low roughness height. The lack of abundant, full-glacial, eolian silt deposition in the loess stratigraphic record of central Alaska may be due, therefore, to a mimimal ability of the landscape to trap loess, rather than a lack of available eolian sediment.


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* Corresponding author. Fax: +1-303-236-5349. E-mail address: (D.R. Muhs).


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Ager, T.A., (1982). Vegetational history of western Alaska during the Wisconsin glacial interval and the Holocene. Hopkins, D.M., Matthews, J.V. Jr., Schweger, C.E., and Young, S.B. Paleoecology of Beringia. Academic Press, New York. 7593.
Ager, T.A., (1983). Holocene vegetational history of Alaska. Wright, H.E. Jr. Late-Quaternary Environments of the United States Volume 2 The Holocene. University of Minnesota Press, Minneapolis. 128141.
Ager, T.A., (2003). Late Quaternary vegetation and climate history of the central Bering land bridge from St. Michael Island, western Alaska. Quaternary Research, this volume
Ager, T.A., and Brubaker, L., (1985). Quaternary palynology and vegetational history of Alaska. Bryant, V.M. Jr., and Holloway, R.G. Pollen Records of Late-Quaternary North American Sediments. American Association of Stratigraphic Palynologists Foundation, Dallas, Texas. 353383.
Aleinikoff, J.N., Muhs, D.R., Sauer, R., and Fanning, C.M., (1999). Late Quaternary loess in northeastern Colorado, Part II-Pb isotopic evidence for the variability of loess sources. Geological Society of American Bulletin 111, 18761883.
Anderson, L., Abbott, M.B., and Finney, B.P., (2001a). Alaska lake sediment data and Holocene climate reconstructions. IGBP PAGES World Data Center for Paleoclimatology (Boulder, Colorado), Data Contribution Series, 2001038.
Anderson, L., Abbott, M.B., and Finney, B.P., (2001). Holocene climate inferred from oxygen isotope ratios in lake sediments, central Brooks Range, Alaska. Quaternary Research 55, 313321.
Bard, E., Hamelin, B., Fairbanks, R.G., and Zindler, A., (1990). Calibration of the 14C timescale over the past 30,000 years using mass-spectrometric U-Th ages from Barbados corals. Nature 345, 405410.
Bartlein, P.J., Anderson, K.H., Anderson, P.M., Edwards, M.E., Mock, C.J., Thompson, R.S., Webb, R.S., Webb, T. III, and Whitlock, C., (1998). Paleoclimate simulations for North America over the past 21,000 years. features of the simulated climate and comparisons with paleoenvironmental data. Quaternary Science Reviews 17, 549585.
Begét, J.E., (1988). Tephras and sedimentology of frozen loess. International Permafrost Conference Proceedings 5, 672677.
Begét, J.E., (1990). Middle Wisconsin climate fluctuations recorded in central Alaskan loess. Géographie Physique et Quaternaire 44, 313.
Begét, J., Mason, O., and Anderson, P., (1992). Age, extent and climatic significance of the c. 3400 BP Aniakchak tephra, western Alaska, USA. The Holocene 2, 5156.
Begét, J.E., Hopkins, D.M., and Charron, S.D., (1996). The largest known maars on Earth, Seward Peninsula, northwest Alaska. Arctic 49, 6269.
Berger, A., and Loutre, M.F., (1991). Insolation values for the climate of the last 10 million years. Quaternary Science Reviews 10, 297317.
Bradbury, J.P., Grosjean, M., Stine, S., and Sylvestre, F., (2001). Full and late glacial lake records along the PEP 1 transect. their role in developing interhemispheric paleoclimate interactions. Markgraf, V. Interhemispheric Climate Linkages. Academic Press, San Diego. 265291.
Buurman, P., Pape, T.h., and Muggler, C.C., (1997). Laser grain-size determination in soil genetic studies 1. Practical Problems. Soil Science 162, 211218.
Colinvaux, P.A., (1964). The environment of the Bering Land Bridge. Ecological Monographs 34, 297329.
Colinvaux, P.A., (1967). A long pollen record from St. Lawrence Island, Bering Sea, Alaska. Palaeogeography, Palaeoclimatology, Palaeoecology 3, 2948.
Colman, S.M., Peck, J.A., Karabanov, E.B., Carter, S.J., Bradbury, J.P., King, J.W., and Williams, D.F., (1995). Continental climate response to orbital forcing from biogenic silica records in Lake Baikal. Nature 378, 769771.
Dean, W.E., (1997). Rates, timing, and cyclicity of Holocene eolian activity in north-central United States. evidence from varved lake sediments. Geology 25, 331334.
Elias, S.A., Short, S.K., Nelson, C.H., and Birks, H.H., (1996). Life and times of the Bering Land Bridge. Nature 382, 6063.
Fairbanks, R.G., (1989). A 17,000-year glacio-eustatic sea level record. influence of glacial melting rates on the Younger Dryas event and deep-ocean circulation. Nature 342, 637642.
Feely, R.A., Massoth, G.J., and Paulson, A.J., (1981). The distribution and elemental composition of suspended particulate matter in Norton Sound and the northeastern Bering Sea shelf. implications for Mn and Zn recycling in coastal waters. Hood, D.W., and Calder, J.A. The Eastern Bering Sea Shelf. Oceanography and Resources Volume One. U.S. Department of Commerce, National Oceanic and Atmospheric Administration, Washington, D.C. 321337.
Goetcheus, V.G., and Birks, H.H., (2001). Full-glacial upland tundra vegetation preserved under tephra in the Beringia National Park, Seward Peninsula, Alaska. Quaternary Science Reviews 20, 135147.
Hallett, B., Hunter, L., and Bogen, J., (1996). Rates of erosion and sediment evacuation by glaciers. a review of field data and their implications. Global and Planetary Change 12, 213235.
Hamilton, T.D., (1982). A late Pleistocene glacial chronology for the southern Brooks Range. stratigraphic record and regional significance. Geological Society of America Bulletin 93, 700716.
Hamilton, T.D., (1994). Late Cenozoic glaciation of Alaska. in: Plafker, G., Berg, H.C. (Eds.), The Geology of Alaska, The Geology of North America, v. G-1, . Geological Society of America, Boulder, Colorado., pp. 813844.
Hoare, J.M., and Condon, W.H., (1971). Geologic Map of the St. Michael Quadrangle, Alaska. U.S. Geological Survey Miscellaneous Geologic Investigations Map I-682
Höfle, C., and Ping, C.-L., (1996). Properties and soil development of late-Pleistocene paleosols from Seward Peninsula, northwest Alaska. Geoderma 71, 219243.
Höfle, C., Edwards, M.E., Hopkins, D.M., Mann, D.H., and Ping, C.-L., (2000). The full-glacial environment of the northern Seward Peninsula, Alaska, reconstructed from the 21,500-year-old Kitluk paleosol. Quaternary Research 53, 143153.
Hopkins, D.M., (1963). Geology of the Imuruk Lake area, Seward Peninsula, Alaska. U.S. Geological Survey Bulletin 1141-C, 101 pp
Hopkins, D.M., (1972). The paleogeography and climatic history of Beringia during late Cenozoic time. Inter-Nord 12, 121150.
Hopkins, D.M., (1982). Aspects of the paleogeography of Beringia during the late Pleistocene. Hopkins, D.M., Matthews, J.V. Jr., Schweger, C.E., and Young, S.B. Paleoecology of Beringia. Academic Press, New York. 328.
Kaufman, D.S., and Calkin, P.E., (1988). Morphometric analysis of Pleistocene glacial deposits in the Kigluaik Mountains, northwestern Alaska, U.S.A. Arctic and Alpine Research 20, 273284.
Kohfeld, K.E., and Harrison, S.P., (2001). DIRTMAP. the geological record of dust. Earth-Science Reviews 54, 81114.
Lea, P.D., and Waythomas, C.F., (1990). Late-Pleistocene eolian sand sheets in Alaska. Quaternary Research 34, 269281.
McCulloch, D., and Hopkins, D., (1966). Evidence for an early Recent warm interval in northwestern Alaska. Geological Society of America Bulletin 77, 10891108.
Muhs, D.R., Bettis, E.A. III Geochemical variations in Peoria Loess of western Iowa indicate paleowinds of midcontinental North America during last glaciation. Quaternary Research 53, (2000). 4961.
Muhs, D.R., Aleinikoff, J.N., Stafford, T.W. Jr., Kihl, R., Been, J., Mahan, S.A., and Cowherd, S.D., (1999). Late Quaternary loess in northeastern Colorado. Part I—Age and paleoclimatic significance. Geological Society of America Bulletin 111, 18611875.
Muhs, D.R., Ager, T.A., Bettis, E.A. III, McGeehin, J., Been, J.M., Begét, J.E., Pavich, M.J., Stafford, T.W. Jr., Pinney, D., (2003). Stratigraphy and paleoclimatic significance of late Quaternary loess-paleosol sequences of the last interglacial-glacial cycle in central Alaska. Quaternary Science Reviews, in press
Péwé, T.L., (1955). Origin of the upland silt near Fairbanks, Alaska. Geological Society of America Bulletin 66, 699724.
Péwé, T.L., (1975). Quaternary geology of Alaska. U.S. Geological Survey Professional Paper 835, 145 pp
Pye, K., and Sherwin, D., (1999). Loess. Goudie, A.S., Livingstone, I., and Stokes, S. Aeolian Environments, Sediments and Landforms. John Wiley & Sons, Ltd, Chicester. 213238.
Riehle, J.R., Meyer, C.E., Ager, T.A., Kaufman, D.S., and Ackerman, R.E., (1987). The Aniakchak tephra deposit, a late Holocene marker horizon in western Alaska. U.S. Geological Survey Circular 998, 1922.
Sainsbury, C.L., (1972). Geologic Map of the Teller Quadrangle, Western Seward Peninsula, Alaska. U.S. Geological Survey Miscellaneous Geologic Investigations Map I-685, scale 1:250,000
Stuiver, M., Reimer, P.J., Bard, E., Beck, J.W., Burr, G.S., Hughen, K.A., Kromer, B., McCormac, G., van der Plicht, J., and Spurk, M., (1998). INTCAL 98 Radiocarbon age calibration, 24,000-0 cal BP. Radiocarbon 40, 10411083.
Tsoar, H., and Pye, K., (1987). Dust transport and the question of desert loess formation. Sedimentology 34, 139153.
Voelker, A.H.L., Grootes, P.M., Nadeau, M.-J., and Sarnthein, M., (2000). Radiocarbon levels in the Iceland Sea from 25–53 kyr and their link to the Earth’s magnetic field intensity. Radiocarbon 42, 437452.
Westgate, J.A., Stemper, B.A., and Péwé, T.L., (1990). A 3 m.y. record of Pliocene-Pleistocene loess in interior Alaska. Geology 18, 858861.
Wright, J.S., (2001). “Desert” loess versus “glacial” loess. quartz silt formation, source areas and sediment pathways in the formation of loess deposits. Geomorphology 36, 231256.
Xiao, J.L., Inouchi, Y., Kumai, H., Yoshikawa, S., Kondo, Y., Liu, T.S., and An, Z.S., (1997). Eolian quartz flux to Lake Biwa, central Japan, over the past 145,000 years. Quaternary Research 48, 4857.
Yokoyama, Y., Esat, T.M., and Lambeck, K., (2001). Coupled climate and sea-level changes deduced from Huon Peninsula coral terraces of the last ice age. Earth and Planetary Science Letters 193, 579587.
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