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Martin, Janis; Jaeschke, Andrea; Rethemeyer, Janet; Opitz, Stephan; Wennrich, Volker; Bauersachs, Thorsten; Bahr, André: Lipid biomarkers, geochemical composition and grain-size distribution of surface sediments from the western tropical South Atlantic [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.992501 (dataset in review)

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Abstract:
Here we present lipid biomarker, geochemical and grain-size data of surface sediments from the western tropical South Atlantic collected during R/V METEOR cruise M125. We aimed to validate two commonly used lipid-based paleothermometers, the unsaturation index of alkenones (UK'37) and the TetraEther Index of tetraethers consisting of 86 carbon atoms (TEX86), along a transect on the Brazilian continental margin. The dataset contains alkenone, n-alkane, and Glycerol Dialkyl Glycerol Tetraether (GDGT) peak areas, elemental composition, bulk-geochemical parameters, grain size distribution, and derived results of the end-member analysis. Alkenones and n-alkanes were analyzed using an Agilent 7890 series II gas chromatograph equipped with an on-column injector and flame ionization detector (FID). GDGTs were analyzed with an Agilent 1260 Infinity II HPLC system linked to an Agilent MSD XT mass spectrometer following the methodology described by Hopmans et al. (2016; doi:10.1016/j.orggeochem.2015.12.006). The elemental compositions were determined by non-destructive energy-dispersive X-ray fluorescence spectrometry (ED-XRF) using a SPECTRO XEPOS P analyzer. Total carbon (TC), total organic carbon (TOC), and total nitrogen (TN) were analyzed using a Vario Micro Cube elemental analyzer. Analyses for grain-size classes ranging from 0.04 to 2,000 μm were conducted with a Beckman Coulter LS13 laser diffraction particle-size analyzer. End-member (EM) modeling of the unprocessed grain-size data was performed using the Matlab® -based software tool AnalySize 1.2.2. (Paterson & Heslop, 2015; doi:10.1002/2015GC006070).
Keyword(s):
Alkenone Uk'37 index; BIT index; GDGTs; Grain Size; n-alkanes; Sea surface temperature proxy; Surface sediments; TEXH86; total carbon (TC); total nitrogen (TN); Total organic carbon (TOC); western tropical South Atlantic; XRF
References:
Bahr, André; Albuquerque, Ana Luiza Spadano; Ardenghi, Nicolò; Batenburg, Sietske J; Bayer, Margret; Catunda, Maria Carolina Amorim; Conforti, Alessandro; Dias, Bruna Borba; Díaz, Rut A; Egger, Lisa M; Evers, Florian; Fischer, Tobias; Hatsukano, Kenji; Hennrich, Barbara; Hoffmann, Julia; Jivcov, Sandra; Kusch, Stephanie; Munz, Philipp; Niedermeyer, Eva M; Osborne, Anne H; Raddatz, Jacek; Raeke, Andreas; Reissig, Stefan; Sebastian, Ulrich; Taniguchi, Nancy Kazumi; Venancio, Igor Martins; Voigt, Silke; Wachholz, Alexander (2016): South American Hydrological Balance and Paleoceanography during the Late Pleistocene and Holocene (SAMBA) - Cruise No. M125 - March 21 - April 15, 2016 - Rio de Janeiro (Brazil) - Fortaleza (Brazil). METEOR-Berichte, DFG-Senatskommission für Ozeanographie, M125, 47 pp, https://doi.org/10.2312/cr_m125
Hopmans, Ellen C; Schouten, Stefan; Sinninghe Damsté, Jaap S (2016): The effect of improved chromatography on GDGT-based palaeoproxies. Organic Geochemistry, 93, 1-6, https://doi.org/10.1016/j.orggeochem.2015.12.006
Paterson, Greig A; Heslop, David (2015): New methods for unmixing sediment grain size data. Geochemistry, Geophysics, Geosystems, 16(12), 4494-4506, https://doi.org/10.1002/2015GC006070
Coverage:
Median Latitude: -16.930810 * Median Longitude: -38.854197 * South-bound Latitude: -23.103300 * West-bound Longitude: -41.518000 * North-bound Latitude: -10.582300 * East-bound Longitude: -36.051300
Date/Time Start: 2016-03-22T12:51:00 * Date/Time End: 2016-04-11T14:29:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Size:
7 datasets

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Datasets listed in this bundled publication

  1. Martin, J; Jaeschke, A; Rethemeyer, J et al. (in review): Alkenones, UK'37 and SST of surface sediment samples from the western tropical South Atlantic collected during R/V METEOR cruise M125. https://doi.pangaea.de/10.1594/PANGAEA.992479
  2. Martin, J; Jaeschke, A; Rethemeyer, J et al. (in review): Carbon, nitrogen, and sulfur content of surface sediment samples from the western tropical South Atlantic collected during R/V METEOR cruise M125. https://doi.pangaea.de/10.1594/PANGAEA.992019
  3. Martin, J; Jaeschke, A; Rethemeyer, J et al. (in review): X-ray fluorescence spectrometry (ED-XRF) of surface sediment samples from the western tropical South Atlantic collected during R/V METEOR cruise M125. https://doi.pangaea.de/10.1594/PANGAEA.992480
  4. Martin, J; Jaeschke, A; Rethemeyer, J et al. (in review): End-member modeling of surface sediment samples from the western tropical South Atlantic collected during R/V METEOR cruise M125. https://doi.pangaea.de/10.1594/PANGAEA.992489
  5. Martin, J; Jaeschke, A; Rethemeyer, J et al. (in review): GDGTs of surface sediment samples from the western tropical South Atlantic collected during R/V METEOR cruise M125. https://doi.pangaea.de/10.1594/PANGAEA.992487
  6. Martin, J; Jaeschke, A; Rethemeyer, J et al. (in review): Grain size distribution of surface sediment samples from the western tropical South Atlantic collected during R/V METEOR cruise M125. https://doi.pangaea.de/10.1594/PANGAEA.992490
  7. Martin, J; Jaeschke, A; Rethemeyer, J et al. (in review): n-alkanes of surface sediment samples from the western tropical South Atlantic collected during R/V METEOR cruise M125. https://doi.pangaea.de/10.1594/PANGAEA.992495