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      Application of the long chain diol index (LDI) paleothermometer to the early Pleistocene (MIS 96)

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      General Information:

      Citation:
      Naafs, B. D. A. , Hefter, J. and Stein, R. (2012): Application of the long chain diol index (LDI) paleothermometer to the early Pleistocene (MIS 96) , Organic Geochemistry, 49 , pp. 83-85 . doi: 10.1016/j.orggeochem.2012.05.011
      Cite this page as:
      hdl:10013/epic.39708
      DOI:
      https://doi.org/10.1016/j.orggeochem.2012.05.011
      Official URL:
      http://www.sciencedirect.com/science/article/pii/S0146638012001040
      Contact Email:
      David.Naafs@awi.de
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      Cite this document as:
      hdl:10013/epic.39708.d001
      Abstract:

      Recently, a new organic geochemical paleothermometer based on the relative abundance of long chain alkyl 1,13- and 1,15-diols, the so-called long chain diol index (LDI), was proposed. Because of its novelty, the proxy has not been reported for sediments older than 43 ka. We therefore determined the LDI for 14 sediment samples from the early Pleistocene between 2.49 and 2.41 Ma, comprising Marine Isotope Stage (MIS) 98 to 95, and converted the values to sea surface temperature (SST) estimates to test whether the LDI could be applied or not to the early Quaternary. We show that the long chain diols can be preserved in marine sediments from the early Pleistocene, although at our study site this is limited to periods of increased biomarker accumulation (glacials). Although the results are based on a limited time interval and number of samples, the similarity between LDI-based SST and alkenone-based SST from the same samples suggests that the LDI proxy may have potential for studies covering the entire Quaternary

      Further Details:

      Item Type:
      Article
      Authors:
      Naafs, Bernhard David Adriaan ; Hefter, Jens ; Stein, Rüdiger
      Divisions:
      AWI Organizations > Geosciences > Marine Geology and Paleontology
      Programs:
      Helmholtz Research Programs > PACES I (2009-2013) > TOPIC 3: Lessons from the Past > WP 3.1: Past Polar Climate and inter-hemispheric Coupling
      Eprint ID:
      30794
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