115
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      An alternative astronomical calibration of the lower Pleistocene timescale based on ODP Site 677

      Read this article at

      ScienceOpenPublisher
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Ocean Drilling Program (ODP) Site 677 provided excellent material for high resolution stable isotope analysis of both benthonic and planktonic foraminifera through the entire Pleistocene and upper Pliocene. The oxygen isotope record is readily correlated with the SPECMAP stack (Imbrieet al.1984) and with the record from DSDP 607 (Ruddimanet al.1986) but a significantly better match with orbital models is obtained by departing from the timescale proposed by these authors below Stage 16 (620 000 years). It is the stronger contribution from the precession signal in the record from ODP Site 677 that provides the basis for the revised timescale. Our proposed modification to the timescale would imply that the currently adopted radiometric dates for the Matuyama–Brunhes boundary, the Jaramillo and Olduvai Subchrons and the Gauss–Matuyama boundary underestimate their true astronomical ages by between 5 and 7%.

          Related collections

          Most cited references23

          • Record: found
          • Abstract: not found
          • Article: not found

          Subcommission on geochronology: Convention on the use of decay constants in geo- and cosmochronology

            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Age dating and the orbital theory of the ice ages: Development of a high-resolution 0 to 300,000-year chronostratigraphy

              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Pleistocene Temperatures

                Bookmark

                Author and article information

                Journal
                applab
                Transactions of the Royal Society of Edinburgh: Earth Sciences
                Transactions of the Royal Society of Edinburgh: Earth Sciences
                Cambridge University Press (CUP)
                0263-5933
                1473-7116
                1990
                November 2011
                : 81
                : 04
                : 251-261
                Article
                10.1017/S0263593300020782
                dcb08490-0e13-4f8d-9c65-58e8ae16c501
                © 1990
                History

                Comments

                Comment on this article