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Estimates of the Position of Sea Level between 140,000 and 75,000 Years ago

Published online by Cambridge University Press:  20 January 2017

Charles E. Stearns
Charles E. Stearns*
Affiliation:
Department of Geology, Tufts University, Medford, Massachusetts 02155 USA
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Abstract

The absolute elevations of sea level 103,000 and 82,000 years ago have been estimated as −15 and −13 m, respectively, from the present elevations of emergent reefs on Barbados (Broecker et al., 1968; Matthews, 1973; Bloom et al., 1974). The “Barbados model” requires two assumptions: (1) that sea level was +6 m 124,000 years ago, and (2) that rates of uplift on short individual traverses have been uniform during the last 125,000 years.

A test of the derived values on Barbados itself does not yield uniform rates of uplift between 124,000 and 82,000 years ago. Less reliably dated strand line features on less uplifted coasts suggest that sea level 124,000 years ago differed from sea levels 103,000 and 82,000 years ago by smaller amounts than those suggested by the “Barbados model.” Such smaller differences yield more uniform rates of uplift between 124,000 and 82,000 years ago, on New Guinea as well as on Barbados, than do the larger. The “Barbados model” is not sufficiently precise to yield close estimates of past elevations of sea level. Better values will eventually be derived from low uplift coasts, when stratigraphic and radiometric data from them have achieved the credibility of data from moderate to high uplift coasts.

Type
Research Article
Information
Quaternary Research , Volume 6 , Issue 3 , September 1976 , pp. 445 - 449
Copyright
University of Washington

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References

Arambourg, C., 1954. Eustatisme et Isostasie Academie des Sciences, Paris, Comptes Rendues 234 226–227.Google Scholar
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/234U dates from the Huon Peninsula, New Guinea Quaternary Research 4 185–205.Google Scholar
Bonadonna, F.P., Bigazzi, G., 1970. Studi sul Pleistocene del Lazio. VIII. Datazione di tufi intertirreniani Bolletino della Societa Geologica Italiana 89 464–473.Google Scholar
Broecker, W.S., Thurber, D.L., Goddard, J., Ku, T.-L., Matthews, R.K., Mesolella, K.J., 1968. Milankovich hypothesis supported by precise dating of coral reefs and deep-sea sediments Science 159 297–300.CrossRefGoogle Scholar
Chappell, J., 1974. Geology of coral terraces, Huon Peninsula, New Guinea: A study of Quaternary tectonic movements and sea-level changes Geological Society of America Bulletin 85 553–570.2.0.CO;2>CrossRefGoogle Scholar
Kaufman, A., Broecker, W.S., Ku, T.-L., Thurber, D.L., 1971. The status of U-series methods of mollusk dating Geochimica et Cosmochimica Acta 35 1155–1183.CrossRefGoogle Scholar
Ku, T.-L., Kimmel, M.A., Easton, W.H., O'Neil, T.J., 1974. Eustatic sea level 120,000 years ago on Oahu, Hawaii Science 183 959–962.CrossRefGoogle Scholar
Matthews, R.K., 1973. Relative elevation of Late Pleistocene high sea level stands: Barbados uplift rates and their implications Quaternary Research 3 147–153.CrossRefGoogle Scholar
Mesolella, K.J., Matthews, R.K., Broecker, W.S., Thurber, D.L., 1969. The astronomic theory of climatic change: Barbados data Journal of Geology 77 250–274.CrossRefGoogle Scholar
Moore, W.S., Somayajulu, B.L.K., 1974. Age determinations of fossil corals using 230Th/234Th and 230Th/237Th Journal of Geophysical Research 79 5065–5068.CrossRefGoogle Scholar
Neumann, A.C., Moore, W.S., 1975. Sea level events and Pleistocene coral ages in the northern Bahamas Quaternary Research 5 215–224.CrossRefGoogle Scholar
Stearns, C.E., Thurber, D.L., 1965. Th230/U234 dates of late Pleistocene marine fossils from the Mediterranean and Moroccan littorals Quaternaria 7 29–42.Google Scholar
Stearns, C.E., Thurber, D.L., 1967. Th230/U234 dates of late Pleistocene marine fossils from the Mediterranean and Moroccan littorals Progress in Oceanography Vol. 4 Pergamon Oxford and New York 293–305.CrossRefGoogle Scholar
Stearns, H.T., 1970. Ages of dunes on Oahu, Hawaii Bernice P. Bishop Museum, Occasional Papers 24 No. 4 50–72.Google Scholar
Veeh, H.H., 1966. Th230/U234 and U234/U238 ages of Pleistocene high sea level stand Journal of Geophysical Research 71 3379–3386.CrossRefGoogle Scholar
Veeh, H.H., Chappell, J., 1970. Astronomical theory of climatic change: support from New Guinea Science 167 863–865.Google ScholarPubMed
Veeh, H.H., Giegengack, R., 1970. Uranium-series ages of corals from the Red Sea Nature (London) 226 155–156.Google ScholarPubMed
Ward, W.T., Ross, P.J., Colquhoun, D.J., 1971. Interglacial high sea levels—An absolute chronology derived from shore-line elevations Palaeogeography, Palaeoclimatology, Palaeoecology 9 77–99.Google Scholar
Zeuner, F.B., 1945. The Pleistocene Period Ray Society London.Google Scholar