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Helium-Uranium Dating of Corals from Middle Pleistocene Barbados Reef Tracts1

Published online by Cambridge University Press:  20 January 2017

Michael L. Bender ,
F.T. Taylor  and
R.K. Matthews
Michael L. Bender
Affiliation:
Lamont-Doherty Geological Observatory, Palisades, New York 10964 the State University of New York at Stony Brook, Stony Brook, New York 11790 USA
F.T. Taylor
Affiliation:
Department of Geology, Brown University, Providence, Rhode Island 02881 USA
R.K. Matthews
Affiliation:
Department of Geology, Brown University, Providence, Rhode Island 02881 USA
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Abstract

By He-U dating of corals from elevated Pleistocene reef tracts on Barbados, we have extended back to the Middle Pleistocene the high sea stand chronology previously deduced by Th230-U dating. Six samples from the first major reef tract complex older than the 200,000-yr complex gave ages of 350,000 ± 25,000 yr B.P. Two corals from the crest of Second High Cliff, an unusually large escarpment occurring approximately midway in the terrace sequence, gave concordant ages of 480,000 and 500,000 yr. Unrecrystallized corals from older reefs gave ages ranging back to 650,000 yr.

The results date episodes of high sea stands at 350,000 and 500,000 yr B.P.

Type
Original Articles
Information
Quaternary Research , Volume 3 , Issue 1 , June 1973 , pp. 142 - 146
Copyright
University of Washington

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Footnotes

1

Lamont-Doherty Geological Observatory Contribution No. 1811

References

Amiel, S., (1962). Analytical applications of delayed neutron emission in fissionable elements. Analytical Chemistry 34, 1683–1692.Google Scholar
Bender, Michael L., (1970). Helium Uranium Dating of Corals. Ph.D. Thesis Columbia University New York.Google Scholar
Bender, Michael L., (1973). Helium-uranium dating of corals. Geochimica et Cosmochimica Acta in press.CrossRefGoogle Scholar
Broecker, W.S., Thurber, D.L., Goddard, J., Ku, T.L., Matthews, R.K., Mesolella, K.J., (1968). Milankovitch hypothesis supported by precise dating of coral reefs and deep-sea sediments. Science 159, 297–300.Google Scholar
Broecker, W.S., Van Donk, J., (1970). Insolation changes, ice volumes, and the O18 record in deep-sea cores. Reviews of Geophysics and Space Physics 8, 169–198.Google Scholar
Fanale, F.P., Schaeffer, O.A., (1965). Helium-uranium ratios for Pleistocene and Tertiary fossil aragonites. Science 149, 312–317.Google Scholar
James, Noel P., Mountjoy, Eric W., Omura, Akio, (1971). An early Wisconsin reef terrace at Barbados, West Indies and its climatic implications. Geological Society of America Bulletin 80, 1481–1484.Google Scholar
Kent, D., Opdyke, N.D., Ewing, M., (1971). Climate change in the North Pacific using icerafted detritus as a climatic indicator. Geological Society of America Bulletin 82, 2741–2754.Google Scholar
Mesolella, Kenneth J., (1967). Zonation of uplifted Pleistocene coral reefs on Barbados, West Indies. Science 156, 638–640.Google Scholar
Mesolella, Kenneth J., (1968). The Uplifted Reefs of Barbados: Physical Stratigraphy, Facies Relationships and Absolute Chronology. Ph.D. Thesis Brown University.Google Scholar
Mesolella, K.J., Matthews, R.K., Broecker, W.S., Thurber, D.L., (1969). The astronomical theory of climate change; Barbados data. Journal of Geology 77, 250–274.Google Scholar
Mo, M.T., (1971). Uranium Concentrations in Marine Sediments. Ph.D. Dissertation Texas A and M University College Station.Google Scholar