Hostname: page-component-8448b6f56d-c4f8m Total loading time: 0 Render date: 2024-04-19T16:02:51.577Z Has data issue: false hasContentIssue false

A Regional Stratigraphic Isochron (ca. 8000 14C yr B.P.) from Final Deglaciation of Hudson Strait

Published online by Cambridge University Press:  20 January 2017

Michael W. Kerwin*
Affiliation:
Department of Geological Sciences and Institute of Arctic and Alpine Research, University of Colorado, Box 450, Boulder, Colorado, 80309-0450

Abstract

Sedimentologic, rock-magnetic, and X-ray fluorescence data from two marine sediment cores in Hudson Strait suggest that a red, hematite-rich clay layer was deposited throughout the strait during the final collapse of the Laurentide Ice Sheet in the vicinity of northern Hudson Bay and western Hudson Strait. This layer, which can be recognized by its reddish-pink color (10YR6/2 to 5YR4/2) and relatively high-hematite proportions (low magnetic susceptibility and magnetite-to-hematite ratio), is dated from 8000 to 7900 14C yr B.P. at both ends of the strait. The Dubawnt Group, a Proterozoic bedrock unit in northern Hudson Bay, is the most likely source of this stratigraphic isochron. In eastern Hudson strait, the recognition of this red unit and other distal glaciomarine sediments from 8400 to 7900 14C yr B.P. indicates that little sediment from the nearby Labrador Dome reached eastern Hudson Strait during this 500-yr interval. This time interval immediately postdates the Noble Inlet advance, a northward flow of Labrador ice across eastern Hudson Strait onto southern Baffin Island from ca. 8900 to 8400 14C yr B.P. One explanation for the lack of Labrador sediments is that the northern margin of the Labrador dome was cold-based for up to 500 yr following the Noble Inlet advance.

Type
Research Article
Copyright
University of Washington

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Alley, R. B., and MacAyeal, D. R. (1994). Ice-rafted debris associated with binge–purge oscillations of the Laurentide Ice Sheet. Paleoceanography 9, 503511.Google Scholar
Andrews, J. T. (1984). The Laurentide Ice Sheet: Evidence from the eastern Canadian Arctic on its geometry, dynamics and history. In “Geographical Papers,” p. 161. George Overs Ltd., London/Rugby.Google Scholar
Andrews, J. T. (1987). The Late Wisconsin glaciation and deglaciation of the Laurentide ice sheet. In “North America and Adjacent Oceans During the Last Deglaciation v. K-3” (Ruddiman, W. F. and Wright, H. E., Ed.), pp. 1337. Geological Society of America, Boulder, CO. Google Scholar
Andrews, J.T., and Falconer, G. (1969). Late glacial and post-glacial history and emergence of the Ottawa Islands, Hudson Bay, Northwest Territories: Evidence on the deglaciation of Hudson Bay. Canadian Journal of Earth Sciences 6, 12631276.CrossRefGoogle Scholar
Andrews, J.T., Bond, G., Jennings, A. E., Kerwin, M., Kirby, M., MacLean, B., Manley, W., and Miller, G. H. (1995a). A Heinrich like event, H-0 (DC-0): Source(s) for detrital carbonate during the Younger Dryas chronozone. Paleoceanography 15(5), 943952.Google Scholar
Andrews, J.T., Clark, P. U., and Stravers, J. A. (1985). The patterns of glacial erosion across the Eastern Canadian Arctic. In “Quaternary Environments: Baffin Island, Baffin Bay, and West Greenland” (Andrews, J. T., Ed.), pp. 6992. Allen & Unwin, Winchester, MA. Google Scholar
Andrews, J. T., MacLean, B., Kerwin, M., Manley, W., Jennings, A.E., and Hall, F. (1995b). Final stages in the collapse of the Laurentide Ice Sheet, Hudson Strait, NWT: 14C AMS dates, seismic stratigraphy, and magnetic susceptibility logs. Quaternary Science Reviews, 14, 9831004.CrossRefGoogle Scholar
Aylsworth, J. M., and Shilts, W. W. (1991). Surficial geology of Coats and Mansel Islands, Northwest Territories. Geological Survey of Canada Report 8923.Google Scholar
Black, C. A., Evans, D. D., White, J. L., Ensminger, L. E., and Clarke, F. E. (1965). “Methods of Soil Analysis.” American Society of Agronomy, No. 9, Madison, WI.Google Scholar
Bond, G., and 13 others (1992). Evidence for massive discharges of icebergs into the glacial Northern Atlantic. Nature 360, 245249.Google Scholar
Bond, G., Broecker, W.S., Johnsen, S., McManus, J., Labeyrie, L., Jouzel, J., and Bonani, G. (1993). Correlations between climate records from North Atlantic sediments and Greenland ice. Nature 365, 143147.CrossRefGoogle Scholar
Coakley, J. P., and Syvitski, J. P. M. (1991). SediGraph technique. In “Principles, Methods, and Applications of Particle Size Analysis” (Syvitski, J. P. M., Ed.), pp. 129142. Cambridge Univ. Press, New York.CrossRefGoogle Scholar
Dreimanis, A. (1962). Quantitative gasometric determination of calcite and dolomite by using Chittick Apparatus. Journal of Sedimentary Petrology 32, 520529.Google Scholar
Duvall, M. L. (1993). Late Foxe glacial geology of the mid-bay area of Frobisher Bay, southeast Baffin Island, Northwest Territories. Unpublished M.S. thesis, University of Colorado.Google Scholar
Dyke, A. S., and Prest, V. K. (1987). Late Wisconsin and Holocene history of the Laurentide Ice Sheet. Geographie Physique et Quaternaire 41, 237263.CrossRefGoogle Scholar
Fulton, R. J. [Ed.] (1989). “Quaternary Geology of Canada and Greenland.” Geological Society of America, Boulder, CO. Google Scholar
Gray, J., Lauriol, B., Bruneau, D., and Ricard, J. (1993). Postglacial emergence of Ungava Peninsula, and its relationship to glacial history. Canadian Journal of Earth Sciences 30, 16761696.Google Scholar
Kaufman, D. S., Miller, G. H., Stravers, J. A., and Andrews, J. T. (1993). An abrupt early Holocene (9./1–/2.6 kyr BP) ice stream advance at the mouth of Hudson Strait, Arctic Canada. Geology 21, 10631066.2.3.CO;2>CrossRefGoogle Scholar
Kerwin, M. W. (1994). Final stages in the collapse of the Laurentide Ice Sheet: A rock magnetic and sedimentological study from Hudson Strait, Canada. Unpublished M.S. thesis, University of Colorado.Google Scholar
King, J. W., and Channell, J. E. T. (1991). Sedimentary magnetism, environmental magnetism, and magnetostratigraphy. Reviews of Geophysics, supplement, 358370.CrossRefGoogle Scholar
Klein, C., and Hurlbut, C. S. (1985). “Manual of Mineralogy.” Wiley, New York.Google Scholar
Kleman, J., Borgstrom, I., and Hattestrand, C. (1994). Evidence for a relict glacial landscape in Quebec-Labrador. Palaeogeography, Palaeoclimatology, Palaeoecology, 111, 217228.Google Scholar
Koç-Karpuz, N. K., and Jansen, E. (1992). A high-resolution diatom record of the last deglaciation from the SE Norwegian Sea: Documentation of rapid climatic changes. Paleoceanography 7, 499520.Google Scholar
Laymon, C. A. (1992). Glacial geology of western Hudson Strait, Canada, with reference to Laurentide Ice Sheet dynamics. Geological Society of America Bulletin, 104, 11691177.Google Scholar
Lehman, S. J., and Keigwin, L. D. (1992). Sudden changes in North Atlantic circulation during the last deglaciation. Nature 356, 757762.CrossRefGoogle Scholar
MacAyeal, D. R. (1993). Growth/purge oscillations of the Laurentide Ice Sheet as a cause of North Atlantic's Heinrich events. Paleoceanography 8, 775784.CrossRefGoogle Scholar
MacLean, B., Vilks, G., and Deonarine, B. (1992). Depositional environments and history of late Quaternary sediments in Hudson Strait and Ungava Bay: Further evidence from seismic and biostratigraphic data. G éographie Physique et Quaternaire 46(3), 311329.Google Scholar
MacLean, B., Williams, G.L., Sanford, B.V., Klassen, F.A., Blankenney, C., and Jennings, A. E. (1986). A reconnaissance study of the bedrock and surficial geology of Hudson Strait, N.W.T. pp. 617635. Current Research, Part B, Geological Survey of Canada, Paper 86–1B.Google Scholar
Manley, W. F. (1995). Late-glacial record of ice-sheet/ocean interactions, Hudson Strait and southern Baffin Island, Eastern Canadian Arctic. Unpublished Ph.D. dissertation, University of Colorado.Google Scholar
Manley, W.F., and Jennings, A. E. (1996). Radiocarbon Date List VIII: Eastern Canadian Arctic, East Greenland Shelf, Iceland Shelf, and Antarctica. Institute of Arctic and Alpine Research Occasional Paper 50.Google Scholar
Miller, G.H., Hearty, J., and Stravers, J. A. (1988). Ice-sheet dynamics and glacial history of southeastern most Baffin Island and outermost Hudson Strait. Quaternary Research 30, 116136.Google Scholar
Rosenbaum, J.G., Reynolds, R.L., Adam, D.P., Drexler, J., Sarna-Woj-cicki, A.M., and Whitney, G. C. (in press). A middle Pleistocene climate record from Buck Lake, Cascade Range, southern Oregon-Evidence from sediment magnetism, trace element geochemistry, and pollen. Geological Society of America Bulletin.Google Scholar
Sanford, B.V., Grant, A.C., Wade, J.A., and Barss, M. S. (1979). Geology of eastern Canada and adjacent areas. Geological Survey of Canada Map 1401A, 4 sheets, 1:2,000,000.Google Scholar
Shilts, W. W. (1985). Geological models for the configuration, history and style of deglaciation of the Laurentide Ice Sheet. In “Models in Geomorphology” (Waldenberg, M. J., Ed.), pp. 7392. Allen and Unwin, London.Google Scholar
Silis, A. B. (1993). “Late Quaternary foraminiferal biostratigraphy of Hudson Strait.” Report for the Environmental Marine Geology Section of the Atlantic Geoscience Centre, Dartmouth, Nova Scotia.Google Scholar
Stravers, J.A., Miller, G.H., and Kaufman, D. S. (1992). Late glacial ice margins and deglacial chronology for southeastern Baffin Island and Hudson Strait, eastern Canadian Arctic. Canadian Journal of Earth Sciences 29, 10001017.Google Scholar
Thompson, R., and Oldfield, F. (1986). “Environmental Magnetism.” Allen and Unwin, London.CrossRefGoogle Scholar
Vilks, G., MacLean, B., Deonarine, B., Currie, C.G., and Moran, K. (1989). Late Quaternary paleoceanography and sedimentary environments in Hudson Strait. Géographie Physique et Quaternaire 43(2), 161178.CrossRefGoogle Scholar