Abstract
Stable isotope measurements on molluses from raised marine deposits, and on foraminifera in a piston core, define a series of light isotope events. A major event is14C dated at ca. 10.3 ka and is correlated with a marked isotopic excursion in HU77-021-156. This event is followed by a dramatic rise in diatom and, slightly later, in benthic foraminiferal abundances. Molluses record another light event around 8 ka. Major fluctuations in both δ18O and δ13C around 10.3 ka suggests that the Hudson Strait ice stream may have responded to the Younger Dryas climatic oscillation.
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References
Mix AC, Ruddiman WF (1985) Structure and timing of the last deglaciation: oxygen-isotope evidence. Quaternary Science Reviews 4:59–108
Denton GH, Hughes TJ (1981) The Last Great Ice Sheets. Wiley-Interscience, New York, 484 pp
Ruddiman WF, McIntyre AA (1981) The mode and mechanism of the last deglaciation: oceanic evidence. Quaternary Research 16:125–134
Osterman LE, Miller GH, Stravers JA (1985) Middle and Late Foxe glacial events in southern Baffin Island. In: Andrews JT (ed) Quaternary Environments: Eastern Canadian Arctic, Baffin Bay, and Western Greenland. Allen & Unwin, Boston, pp 520–545
Andrews JT, Miller GH (1985) Holocene sea level variations within Frobisher Bay. In: Andrews JT (ed) Quaternary Environments: Eastern Canadian Arctic, Baffin Bay, and Western Greeland. Allen & Unwin, Boston, pp 585–607
Miller GH (1980) Late Foxe glaciation of southern Baffin Island, N., W.T., Canada. Geological Society of America Bulletin Part I 91, pp 399–405
Osterman LE (1982) Late Quaternary history of southern Baffin Island, Canada: A study of foraminifera and sediments from Frobisher Bay. PhD dissertation, University of Colorado, Boulder, 380 pp
Praeg DB, MacLean B, Hardy IA, Mudie PJ (1985) Quaternary geology of the southeast Baffin Island Continental Shelf. Geological Survey of Canada Paper 85–14, 38 pp
Stravers JA (1986) Glacial geology of the outer Meta Incognita Peninsula, southern Baffin Island, Arctic Canada. PhD dissertation, University of Colorado, Boulder, 231 pp
Gray JT, Lauriol B (1985) Dynamics of the Late Wisconsin Ice Sheet in the Ungava Peninsula interpreted from geomorphological evidence. Arctic and Alpine Research 17, pp 289–310
Andrews JT, Falconer G (1969) Late glacial and postglacial history of the Ottawa Islands, Hudson Bay, N.W.T.: Evidence on the deglaciation of Hudson Bay. Canadian Journal Earth Sciences 6, pp 1263–1276
Fillon RH (1985) Northwest Labrador Sea stratigraphy, sand input and paleoceanography during the last 160,000 years. In: Andrews JT (ed) Quaternary Environments: Eastern Canadian Arctic, Baffin Bay, and Western Greenland. Allen & Unwin, Boston, pp 210–247
Fillon RH, Williams DF (1984) Dynamics of meltwater discharge from Northern Hemisphere ice sheets during the last deglaciation. Nature 310:674–677
Andrews JT (1973) Late Quaternary variations in oxygen and carbon isotopic composition in Canadian Arctic marine bivalves. Palaeogeography, Palaeoclimatology, Palaeoecology 14:187–192
Hillaire-Marcel C (1977) Les isotopes du carbone et de l'oxygen dans les mers post-glaciares du Quebec. Geographie physique et Quaternaire, 31, 81–106
Mangerud J (1972) Radiocarbon dating of marine shells, including a discussion of recent shells from Norway. Boreas 1:143–172
Jones DS, Williams DF, Arthur MA, Krantz DE (1984) Interpreting the paleoenvironmental, palcoclimatic and life history records in mollusc shells. Geobios, Memoir Special No. 8, Lyon, 333–339
Andrews JT (1980) Progress in relative sea level and ice sheet reconstructions Baffin Island N.W.T. for the last 125,000 years. In: Morner N-A (ed) Earth rheology, Isostasy, and Eustasy. John Wiley & Sons, New York, pp 175–200
Dansgaard W, Clausen H, Gundstrup N, Hammer C, Johnsen S, Kristensdottier P, Reeh N (1982) A new Greenland deep ice core. Science 218:1273–1277
Aksu AE, Mudie PJ (1975) Late Quaternary stratigraphy and paleoceanography of northwest Labrador Sea. Marine Micropaleontology 9:537–557
Williams KM (in preparation) Late Quaternary paleocenography of the Baffin Bay region based on diatoms. PhD dissertation, University of Colorado, Boulder
Williams KM (1986) Recent arctic marine diatom assemblages from Baffin Bay and Davis Strait. Marine Micropaleonontology 10:327–341
Fillon RH, Aksu AE (1985) Evidence for subpolar influence in the Labrador Sea and Baffin Bay during marine isotope stage 2. In: Andrews JT (ed) Quaternary Environments: Eastern Canadian Arctic, Baffin Bay, and Western Greenland. Allen & Unwin, Boston, pp 248–262
Aksu AE (1985) Climatic and oceanographic changes over the past 400,000 years: Evidence from deep-sea cores in Baffin Bay and Davis Strait. In: Andrews IT (ed) Quaternary Environments: Eastern Canadian Arctic, Baffin Bay, and Western Greenland. Allen & Unwin, Boston, pp 181–209
Josenhans HW, Zevenhuizen J, Klassen RA (1986) The Quaternary geology of the Labrador shelf. Canadian Journal Earth Sciences 23:1190–1213
Andrews JT (1986) Late Quaternary continental margin sediment flux adjacent to ODP Leg 105, Site 645. Geological Society of America, Abstracts with program 18, p 527
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Andrews, J.T., Matthews, R.K., Osterman, L.E. et al. Deglaciation and meltwater events in hudson strait and the Eastern Canadian Arctic. Geo-Marine Letters 7, 23–30 (1987). https://doi.org/10.1007/BF02310462
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DOI: https://doi.org/10.1007/BF02310462