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High Resolution ITRAX Analysis of Les Echets (France) Sedimentary Sequence: Linking Geochemical, Biological and Physical Proxies
Stockholm University, Faculty of Science, Department of Geology and Geochemistry.
Stockholm University, Faculty of Science, Department of Geology and Geochemistry.
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology.
2008 (English)Conference paper, Published paper (Other (popular science, discussion, etc.))
Abstract [en]

later part of Marine Isotope Stage (MIS) 3 and MIS 2 (40 and 16 ka BP). The sediments in the lower part of the studied sequence are composed of alternating organic rich and minerogenic layers, while the upper part consists predominantly of silt and clay. Organic geochemical, geophysical and biological environmental indicators (grain size, mineral magnetic parameters, TOC, TN, LOI, stable carbon isotopes, rock eval, biogenic silica, and diatom assemblages) show alternating phases of higher and low lake organic productivity which are interpreted as a response to DO climate variability. XRF is a well-established analytical tool that has recently taken a new direction with the introduction of core scanning systems. The ITRAX XRF core scanning system is non-destructive, acquires continuous data for a broad range of elements in situ as well as generates radiographic images. The Les Echets sequence was analysed using the ITRAX at 1 mm resolution. The radiographic images show significant changes that were not revealed by lithostratigraphic descriptions. Distinct, dense layers are associated with changes in elemental intensities which would have been missed using traditional sub-sampling techniques. The high resolution elemental profiles show associations

Place, publisher, year, edition, pages
2008.
Identifiers
URN: urn:nbn:se:su:diva-16873OAI: oai:DiVA.org:su-16873DiVA: diva2:183393
Note
American Geophysical Union's Fall Meeting 2008, San FranciscoAvailable from: 2008-12-30 Created: 2008-12-30Bibliographically approved

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http://www.agu.org/cgi-bin/SFgate/SFgate?language=English&verbose=0&listenv=table&application=fm08&convert=&converthl=&refinequery=&formintern=&formextern=&transquery=au%3dkylander&_lines=&multiple=0&descriptor=%2fdata%2fepubs%2fwais%2findexes%2ffm08%2ffm08%7c865%7c3344%7cHigh%20Resolution%20ITRAX%20Analysis%20of%20Les%20Echets%20%28France%29%20Sedimentary%20Sequence:%20Linking%20Geochemical%2c%20Biological%20and%20Physical%20Proxies%7cHTML%7clocalhost:0%7c%2fdata%2fepubs%2fwais%2findexes%2ffm08%2ffm08%7c38026740%2038030084%20%2fdata2%2fepubs%2fwais%2fdata%2ffm08%2ffm08.txt

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Wohlfarth, BarbaraKylander, MalinAmpel, Linda
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