3
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Carbonate budget mass estimates for Neogene discoasters from the Equatorial Atlantic (Ceara Rise: ODP Site 927)

      , ,
      Journal of Micropalaeontology
      Geological Society of London

      Read this article at

      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

          Abstract. Mass estimates for Late Miocene and Pliocene (8.6–3.25 Ma) Discoaster species and Sphenolithus are determined using samples of the equatorial Atlantic (Ceara Rise: ODP Site 927). Based on morphometric measurements, 3D computer models were created for 11 Discoaster species and their volumes calculated. From these, shape factors (ks) were derived to allow calculation of mass for different-sized discoasters and Sphenolithus abies. The mass estimates were then used to calculate the contribution of nannofossils to the total nannofossil carbonate. The discoaster contribution ranges from 10% to 40%, with a decreasing trend through the investigated interval. However, our estimates of total nannofossil carbonate from size-corrected abundance data are consistently 30–50% lower than estimates from grain-size measurement; this suggests that data based on mass estimates need to be interpreted with caution.

          Related collections

          Most cited references27

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

          Sortable silt and fine sediment size/composition slicing: Parameters for palaeocurrent speed and palaeoceanography

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

            Coccoliths: Production, transportation and sedimentation

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

              Calculation of coccolith volume and it use in calibration of carbonate flux estimates

                Bookmark

                Author and article information

                Journal
                Journal of Micropalaeontology
                J. Micropalaeontol.
                Geological Society of London
                2041-4978
                2012
                July 01 2012
                : 31
                : 2
                : 169-178
                Article
                10.1144/0262-821X11-014
                b45e76ad-1f39-482b-8c47-256a2fda1336
                © 2012

                https://creativecommons.org/licenses/by/4.0/

                History

                Comments

                Comment on this article