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Comparison of 105 Years of Oxygen Isotope and Insoluble Impurity Profiles from the Devon Island and Camp Century Ice Cores

Published online by Cambridge University Press:  20 January 2017

David A. Fisher
David A. Fisher*
Affiliation:
Polar Continental Shelf Project, Energy, Mines and Resources, Ottawa K1A 0E4, Canada
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Abstract

Oxygen-isotope profiles for the Devon Island ice cap and Camp Century Greenland are affected by a number of variables, some of which must have been the same for both sites. The two δ(18O) records spanning about 120,000 years are brought into relative alignment by comparison of major δ features, and subsequent verification that the insoluble particulate concentration records were also in phase for this alignment. The difference between the δ profiles is shown to be mainly a function of the altitude of the accumulation area for Camp Century. This altitude seems to have been higher than present for the last 100,000 years, suggesting the present flow line through the site has never been shorter. The maximum altitude for the Camp Century accumulation area is 1500 m above the present site and is almost synchronous with the maximum in particulate concentration that occurs at 16,000 yr B.P. The synchronism is likely due to the maximum sea-level lowering that exposed vast areas of continental shelf to wind erosion.

Type
Original Articles
Information
Quaternary Research , Volume 11 , Issue 3 , May 1979 , pp. 299 - 305
Copyright
University of Washington

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References

Bloom, A.L., Broecker, W.S., Chappell, J.M.A., Matthews, R.K., Mesolella, K.J., (1974). Quaternary sea level fluctuations on a tectonic coast: New 230Th/234Th dates from the Huon Peninsula, New Guinea. Quaternary Research. 4, 185-205.Google Scholar
Cragin, J.H., Herron, M.M., Langway, C.C. Jr., Klouda, G., (1974). Interhemispheric comparison of changes in the composition of at mospheric precipitation during the late Cenozoic era. Proceedings of SCOR/SCAR Polar Oceans Conference. McGill University, Montreal, Canada. Google Scholar
Dansgaard, W., Johnsen, S.J., Clausen, H.B., Langway, C.C., (1971). Climatic record revealed by Camp Century ice core. Turekian, K.K., The Late Cenozoic Glacial Ages. Yale University Press, New Haven, Conn, 37-56.Google Scholar
Dansgaard, W., Johnsen, S.J., Clausen, H.B., Gundestrup, N., (1973). Stable isotope glaciology. Meddelelser om Grønland. 197, 2 1-53.Google Scholar
Hammer, C.U., (1977). Dating of Greenland ice cores by microparticle concentration analyses. “Isotopes and Impurities in Snow and Ice,” Proceedings of the Grenoble Symposium. 1975 IAHS publication No. 118. 297-301.Google Scholar
Hammer, C.U., Clausen, H.B., Dansgaard, W., Gundestrup, N., Johnsen, S.J., Reeh, N., (1978). Dating of Greenland ice cores by flow models, isotopes, volcanic debris and continental dust. Journal of Glaciology. 20, 82 3-26.Google Scholar
Hibler, W.D. III, (1972). Design and maximum error estimation for small error low pass filters. USA Cold Regions Research and Engineering Laboratory, CRREL Research Report, Series No. 304. 1-15.Google Scholar
Hughes, T.J., (1977). Do oxygen isotope data from deep core-holes reveal dike-sill thermal convection in polar ice sheets?. “Isotopes and Impurities in Snow and Ice,” Proceedings of the Grenoble Symposium. 1975 IAHS publication No. 118. 336-340.Google Scholar
Koerner, R.M., (1966). Accumulation on the Devon Island ice cap, Northwest Territories, Canada. Journal of Glaciology. 6, 45 383-392.CrossRefGoogle Scholar
Koerner, R.M., (1968). Fabric analysis of a core from the Meighen ice cap, Northwest Territories, Canada. Journal of Glaciology. 7, 51 421-429.Google Scholar
Koerner, R.M., Fisher, D.A., (1978). Discontinuous flow, ice texture, and dirt content in the basal layers of the Devon Island ice cap. (in press)Proceedings of Symposium on Glacier Beds: The Ice-Rock Interface. Ottawa, Canada .Google Scholar
Mock, S.J., Weeks, W.F., (1966). The distribution of 10 meter snow temperatures on the Greenland ice sheet. Journal of Glaciology. 6, 43 23-41.Google Scholar
Paterson, W.S.B., (1969) The Physics of Glaciers. Pergamon Press, New York and London. Google Scholar
Paterson, W.S.B., (1972). Laurentide ice sheet: Estimated volumes during late Wisconsin. Reviews of Geophysics and Space Physics. 10, 4 885-917.Google Scholar
Paterson, W.S.B., Koerner, R.M., (1974). Radio Echo sounding on four ice caps in Arctic Canada. Arctic. 27, 3 225-233.Google Scholar
Paterson, W.S.B., (1977). Extent of the Late-Wisconsin Glaciation in Northwest Greenland and Northern Ellesmere Island: A review of the glaciological and geological evidence. Quaternary Research. 8, 180-190.Google Scholar
Paterson, W.S.B., Koerner, R.M., Fisher, D.A., Johnsen, S.J., Clausen, H.B., Dansgaard, W., Bucher, P., Oeschger, H., (1977). An oxygen-isotope climatic record from the Devon Island ice cap, Arctic Canada. Nature (London). 266, 5602 508-511.CrossRefGoogle Scholar
Prest, 194.K., (1969). Retreat of Wisconsin and recent ice in North America; speculative ice-marginal positions during recession of last ice-sheet complex. Geological Survey of Canada, Map 1257 A. Geological Survey of Canada, Ottawa. Google Scholar
Reeh, N., Clausen, H.B., Dansgaard, W., Gundestrup, N., Hammer, C.U., Johnsen, S.J., (1978). Secular trends of accumulation rates at three Greenland stations. Journal of Glaciology. 20, 82 27-30.Google Scholar
Sater, J.E., (1969) The Arctic Basin. The Arctic Institute of North America, Washington, D.C, 14.Google Scholar
Shackleton, N.J., Opdyke, N.D., (1973). Oxygen isotope and palaeomagnetic stratigraphy of equatorial Pacific core V28-238: Oxygen isotope temperatures and ice volumes on a 105 year and 106 year scale. Quaternary Research. 3, 39-55.Google Scholar