Kasper, Thomas; Wang, Junbo; Schwalb, Antje; Daut, Gerhard; Plessen, Birgit; Zhu, Liping; Mäusbacher, Roland; Haberzettl, Torsten (2023): XRF of composite sediment core NC_08/01 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.961204, In: Kasper, T et al. (2023): Sedimentological and geochemical analyses of composite sediment core NC_08/01 from lake Nam Co [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.961238
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Published: 2023-09-25 • DOI registered: 2023-10-24
Abstract:
Presented are analytical data from lacustrine sediment cores, retrieved from Lake Nam Co (Tibetan Plateau). The sediment core is a composite of one gravity core, taken with a Rumohr-Meischner gravity corer (63 mm diameter) and a piston core, retrieved using an uwitec piston coring system (http://www.uwitec.at; 90 mm diameter). The composite core labelled <NC 08/01> comprises a total length of 10.378 m. The cores were obtained at N 30.737417, E 090.790333 at a water depth of 93 m on 2008-09-15. The purpose of obtaining this sediment core was to establish a high-resolution record of climate (monsoonal) and environmental change using multiple proxy data. The dataset comprises analytical data based on sedimentological, inorganic geochemical, mineralogical and isotope-geochemical methods. Specifically: sediment water content & density; magnetic susceptibility; particel size data; quantitative inorganic geochemical data (ICP-OES aqua regia and HCL digestions); semi-quantitative XRF elemental data; carbon, nitrogen, sulfur contents; qualitative mineralogical data; bulk sediment stable carbon and oxygen isotope data.
Related to:
Kasper, Thomas; Wang, Junbo; Schwalb, Antje; Daut, Gerhard; Plessen, Birgit; Zhu, Liping; Mäusbacher, Roland; Haberzettl, Torsten (2021): Precipitation dynamics on the Tibetan Plateau during the Late Quaternary – Hydroclimatic sedimentary proxies versus lake level variability. Global and Planetary Change, 205, 103594, https://doi.org/10.1016/j.gloplacha.2021.103594
Project(s):
Funding:
Chinese Academy of Sciences (CAS), grant/award no. XDA20070101: Strategic Priority Research Program of the Chinese Academy of Science
Coverage:
Latitude: 30.737420 * Longitude: 90.790330
Date/Time Start: 2008-09-15T00:00:00 * Date/Time End: 2008-09-15T00:00:00
Minimum DEPTH, sediment/rock: 0.002 m * Maximum DEPTH, sediment/rock: 10.389 m
Event(s):
Comment:
The XRF-data were obtained during November 2008 to collect semi-quantitative elemental data using an ITRAX XRF-core scanner (Cox Analytical Systems; Molndal, Sweden) at cologne university (Germany). The scanner used a Mo-tube as X-ray source, a voltage of 50 kV, a current of 35 mA and an exposure time of 20 s at a measuring interval of 2 mm. During measurements, the core-halves were covered with an ultra-thin and highly conductive film ("SpectroCertified® thin-film sample supports Ultra-Polyester film"; Chemplex Industries Inc.; Palm City, USA). Data are given in raw 'peak area (pa)' format. From these raw data 'centered log ratios (clr)' were calculated (Weltje & Tjallingii 2008). On these data a linear regression was used to further detrend the data.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Kasper, Thomas | Geocode – composite depth | |
| 2 | AGE | Age | ka BP | Kasper, Thomas | Geocode | |
| 3 | Silicon (peak area) | Si peak area | Kasper, Thomas | X-ray fluorescence ITRAX core scanner | ||
| 4 | Potassium (peak area) | K peak area | Kasper, Thomas | X-ray fluorescence ITRAX core scanner | ||
| 5 | Calcium (peak area) | Ca peak area | Kasper, Thomas | X-ray fluorescence ITRAX core scanner | ||
| 6 | Titanium (peak area) | Ti peak area | Kasper, Thomas | X-ray fluorescence ITRAX core scanner | ||
| 7 | Iron (peak area) | Fe peak area | Kasper, Thomas | X-ray fluorescence ITRAX core scanner | ||
| 8 | Rubidium (peak area) | Rb peak area | Kasper, Thomas | X-ray fluorescence ITRAX core scanner | ||
| 9 | Strontium (peak area) | Sr peak area | Kasper, Thomas | X-ray fluorescence ITRAX core scanner | ||
| 10 | Barium (peak area) | Ba peak area | Kasper, Thomas | X-ray fluorescence ITRAX core scanner |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
39752 data points
Download Data
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Datasets with similar metadata
- Kasper, T; Haberzettl, T; Wang, J et al. (2015): XRF measurements, CNS content, grain size and sediment accumulation of sediment core NC_08/01 from lake Nam Co, Tibet. https://doi.org/10.1594/PANGAEA.841369
- Kasper, T; Haberzettl, T; Wang, J et al. (2015): (Appendix 4) Sediment accumulation rates of lake Nam Co core NC_08/01. https://doi.org/10.1594/PANGAEA.841366
- Kasper, T; Haberzettl, T; Doberschütz, S et al. (2012): Radiocarbon ages, grain sizes, paleomagentic properties and XRF data of Lake Nam Co sediments, Tibetan Plateau. https://doi.org/10.1594/PANGAEA.779261