Kasper, Thomas; Wang, Junbo; Schwalb, Antje; Daut, Gerhard; Plessen, Birgit; Zhu, Liping; Mäusbacher, Roland; Haberzettl, Torsten (2023): Grain size anlysis of composite sediment core NC_08/01 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.961237, 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: 0.005 m * Maximum DEPTH, sediment/rock: 10.405 m
Event(s):
Comment:
Granulometric data were measured at 1-cm intervals using a laser diffraction technique with two different laser diffraction particle size analyzers, both using the Fraunhofer optical model for calculation. For the upper 43 cm a LS 13 320 (Beckman Coulter, Danvers, MA, USA) was used, whereas for the remaining part of the record a S3500 (Microtrac, Meerbusch, Germany) was applied. Sample pre-processing comprised treatment with H2O2 (15% p.A., 30%p.A.) to remove organic matter and subsequently with HCl (15% p.A.) for the removal of carbonates. For better dispersion 5 ml Sodiumpyrophosphate (Na2HPO4 • H2O) were added and the samples were shaken for 12 h using an overhead shaker.
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 | Grain size, mean | Grain size mean | µm | Kasper, Thomas | Laser diffraction particle size analyser | Graphic mean |
| 4 | Skewness | Skew | Kasper, Thomas | Laser diffraction particle size analyser | ||
| 5 | Kurtosis | Kurt | Kasper, Thomas | Laser diffraction particle size analyser | ||
| 6 | Percentile 10 | Perc10 | µm | Kasper, Thomas | Laser diffraction particle size analyser | |
| 7 | Percentile 20 | Perc20 | µm | Kasper, Thomas | Laser diffraction particle size analyser | |
| 8 | Percentile 30 | Perc30 | µm | Kasper, Thomas | Laser diffraction particle size analyser | |
| 9 | Percentile 40 | Perc40 | µm | Kasper, Thomas | Laser diffraction particle size analyser | |
| 10 | Percentile 50 | Perc50 | µm | Kasper, Thomas | Laser diffraction particle size analyser | |
| 11 | Percentile 60 | Perc60 | µm | Kasper, Thomas | Laser diffraction particle size analyser | |
| 12 | Percentile 70 | Perc70 | µm | Kasper, Thomas | Laser diffraction particle size analyser | |
| 13 | Percentile 80 | Perc80 | µm | Kasper, Thomas | Laser diffraction particle size analyser | |
| 14 | Percentile 90 | Perc90 | µm | Kasper, Thomas | Laser diffraction particle size analyser | |
| 15 | Size fraction > 0.002 mm | >2 µm | % | Kasper, Thomas | Laser diffraction particle size analyser | |
| 16 | Size fraction > 0.004 mm | >4 µm | % | Kasper, Thomas | Laser diffraction particle size analyser | |
| 17 | Size fraction > 0.063 mm, sand | >63 µm | % | Kasper, Thomas | Laser diffraction particle size analyser | |
| 18 | Size fraction > 0.200 mm | >200 µm | % | Kasper, Thomas | Laser diffraction particle size analyser | |
| 19 | Size fraction > 2 mm, gravel | >2 mm | % | Kasper, Thomas | Laser diffraction particle size analyser | |
| 20 | Size fraction < 0.002 mm, clay | <2 µm | % | Kasper, Thomas | Laser diffraction particle size analyser | |
| 21 | Size fraction 0.004-0.002 mm, 8.0-9.0 phi, very fine silt | 4-2 µm | % | Kasper, Thomas | Laser diffraction particle size analyser | |
| 22 | Size fraction < 0.004 mm, clay | <4 µm | % | Kasper, Thomas | Laser diffraction particle size analyser | |
| 23 | Size fraction 0.063-0.004 mm, silt | 63-4 µm | % | Kasper, Thomas | Laser diffraction particle size analyser | |
| 24 | Size fraction 0.200-0.063 mm, fine sand | 200-63 µm fS | % | Kasper, Thomas | Laser diffraction particle size analyser | |
| 25 | Size fraction 2.000-0.200 mm | 2000-200 µm | % | Kasper, Thomas | Laser diffraction particle size analyser |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
23386 data points
Download Data
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