Schmidt, Johannes; Tjallingii, Rik; Schneider, Birgit; Benkaddour, Abdelfattah; Mikdad, Abdeslam; Pichat, Sylvain; Fletcher, William J; Mischke, Steffen; Zielhofer, Christoph (2023): Calibrated high-resolution XRF core-scanning data of Holocene lake sediments from Lake Sidi Ali, Middle Atlas Morocco [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.960342
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Published: 2023-12-31 • DOI registered: 2023-12-31
Abstract:
The North African desert margin is considered one of the areas most sensitive to future climate changes. Improved knowledge about Holocene climatic variability and environmental responses on millennial to centennial scale will help to refine scenarios related to future climate changes. This data set presents calibrated XRF core scanning data (Ca, Sr, Fe, Mn, S, K, Ti) of a ~20 m long Holocene lake sediment sequence from Lake Sidi Ali located in the Middle Atlas, Morocco. The ITRAX core scanner measurements were obtained every 1 mm and calibrated with depth equal quantitative Spectro Xepos XRF data (see. Schmidt et al. 2023, doi:10.1594/PANGAEA.960365) using the multivariate log-ratio calibration model of Weltje et al. 2015 (doi:10.1007/978-94-017-9849-5_21). According to the 210Pb and pollen-based 14C chronology, the calibrated XRF scanning data have a c. annual temporal resolution.
Keyword(s):
Related to:
Zielhofer, Christoph; Fletcher, William J; Mischke, Steffen; De Batist, Marc; Campbell, Jennifer F E; Joannin, Sébastien; Tjallingii, Rik; El Hamouti, Najib; Junginger, Annett; Stele, Andreas; Bussmann, Jens; Schneider, Birgit; Lauer, Tobias; Spitzer, Katrin; Strulper, Michael; Brachert, Thomas C; Mikdad, Abdeslam (2017): Atlantic forcing of Western Mediterranean winter rain minima during the last 12,000 years. Quaternary Science Reviews, 157, 29-51, https://doi.org/10.1016/j.quascirev.2016.11.037
Zielhofer, Christoph; Köhler, Anne; Mischke, Steffen; Benkaddour, Abdelfattah; Mikdad, Abdeslam; Fletcher, William J (2019): Western Mediterranean hydro-climatic consequences of Holocene ice-rafted debris (Bond) events. Climate of the Past, 15(2), 463-475, https://doi.org/10.5194/cp-15-463-2019
Funding:
Deutsche Forschungsgemeinschaft, Bonn (DFG), grant/award no. ZI721/9-3: Geomorphologische und ökologische Reaktionen auf rasche hydrologische Wechsel im Altasgebirge Marokkos während der letzten 30.000 Jahre / Geomorphological and environmental responses to rapid hydrological changes in the Atlas Mountains (Morocco) during the last 30,000 years
Coverage:
Latitude: 33.068323 * Longitude: -5.000662
Minimum DEPTH, sediment/rock: 0.3800 m * Maximum DEPTH, sediment/rock: 195.3500 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Schmidt, Johannes | Geocode – Artifical depths | |
| 2 | Age model | Age model | ka | Schmidt, Johannes | ||
| 3 | Years | Years | Schmidt, Johannes | Calender year | ||
| 4 | Calcium | Ca | mg/kg | Schmidt, Johannes | X-ray fluorescence spectrometry (XRF), Spectro Xepos; followed by multivariate log-ratio calibration according to Weltje et al. (2015) | |
| 5 | Titanium | Ti | mg/kg | Schmidt, Johannes | X-ray fluorescence spectrometry (XRF), Spectro Xepos; followed by multivariate log-ratio calibration according to Weltje et al. (2015) | |
| 6 | Silicon | Si | mg/kg | Schmidt, Johannes | X-ray fluorescence spectrometry (XRF), Spectro Xepos; followed by multivariate log-ratio calibration according to Weltje et al. (2015) | |
| 7 | Iron | Fe | mg/kg | Schmidt, Johannes | X-ray fluorescence spectrometry (XRF), Spectro Xepos; followed by multivariate log-ratio calibration according to Weltje et al. (2015) | |
| 8 | Potassium | K | mg/kg | Schmidt, Johannes | X-ray fluorescence spectrometry (XRF), Spectro Xepos; followed by multivariate log-ratio calibration according to Weltje et al. (2015) | |
| 9 | Sulfur | S | mg/kg | Schmidt, Johannes | X-ray fluorescence spectrometry (XRF), Spectro Xepos; followed by multivariate log-ratio calibration according to Weltje et al. (2015) | |
| 10 | Strontium | Sr | mg/kg | Schmidt, Johannes | X-ray fluorescence spectrometry (XRF), Spectro Xepos; followed by multivariate log-ratio calibration according to Weltje et al. (2015) | |
| 11 | Manganese | Mn | mg/kg | Schmidt, Johannes | X-ray fluorescence spectrometry (XRF), Spectro Xepos; followed by multivariate log-ratio calibration according to Weltje et al. (2015) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
178630 data points
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