Citation:

PANGAEA.961238

Name: Bulk mineralogy of composite sediment core NC_08/01
Published: 2023-09-25
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Asian Monsoon; lake sediment proxies; Nam Co

Always quote citation above when using data! You can download the citation in several formats below.

Published: 2023-09-25 • DOI registered: 2023-10-24

RIS Citation BibTeX Citation Text Citation ShareShow Map Google Earth

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.

Keyword(s):

Asian Monsoon; lake sediment proxies; Nam Co

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):

Tibetan Plateau: Formation- Climate-Ecosystems (SPP1372)

Funding:

Carl Zeiss Foundation, grant/award no. Young Scientist Program: Young Scientist Program

Chinese Academy of Sciences (CAS), grant/award no. XDA20070101: Strategic Priority Research Program of the Chinese Academy of Science

Federal Ministry of Education and Research (BMBF), grant/award no. 03G0813F: CADY

German Research Foundation (DFG), grant/award no. MA1308/23–1

German Research Foundation (DFG), grant/award no. MA1308/23–2

German Research Foundation (DFG), grant/award no. MA1308/23–3

German Research Foundation (DFG), grant/award no. SCHW671/14-1

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: 0.205 m * Maximum DEPTH, sediment/rock: 10.345 m

Event(s):

NC_08/01 * Latitude: 30.737420 * Longitude: 90.790330 * Date/Time: 2008-09-15T00:00:00 * Elevation: 4718.0 m * Lake water depth: 93 m * Recovery: 10.378 m * Location: Lake Nam Co, Tibetan Plateau * Method/Device: Piston corer (PC)

Comment:

Dried and ground bulk sediment samples were used to collect data on the qualitative mineralogical composition of the deposits. Measurement was carried out with an X-ray powder diffractometer (D8-Discover, Bruker) with a CuΚα X-ray source, 40 kV and 35 mA using an area detector (Gadds 2000). XRD-patterns were recorded over an interval from 3° to 65.5° (2Θ) with a step size of 0.02° within four frames. Frames were combined, integrated and the resulting diffractograms were evaluated qualitatively using the DIFFRACplus.EVA software (Bruker).

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	DEPTH, sediment/rock	Depth sed	m	Kasper, Thomas	Geocode – composite depth
2	AGE	Age	ka BP	Kasper, Thomas	Geocode
3	Quartz	Qz		Kasper, Thomas	X = present
4	Calcite	Cal		Kasper, Thomas	X = present
5	Low magnesium calcite	LMC		Kasper, Thomas	X = present
6	High magnesium calcite	HMC		Kasper, Thomas	X = present
7	Aragonite	Arg		Kasper, Thomas	X = present
8	Monohydrocalcite	MHC		Kasper, Thomas	X = present
9	Pyrite	Py		Kasper, Thomas	X = present

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

378 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Depth sed [m]	2 Age [ka BP]	3 Qz	4 Cal	5 LMC	6 HMC	7 Arg	8 MHC	9 Py
0.205	0.348	X					X
0.445	0.879	X		X			X
0.475	1.001	X		X			X
0.515	1.129	X		X			X
0.555	1.198	X		X			X
0.595	1.271	X		X			X
0.635	1.343	X		X			X
0.675	1.427	X		X			X
0.715	1.509	X		X			X
0.735	1.549	X	X	X			X
0.785	1.640	X		X			X
0.825	1.711	X		X			X
0.865	1.791	X	X	X			X
0.905	1.864	X		X			X
0.945	1.940	X					X
0.985	2.020	X			X		X
1.035	2.135	X			X
1.055	2.191	X		X	X			X
1.095	2.307	X		X	X			X
1.135	2.440	X		X				X
1.175	2.581	X		X				X
1.215	2.724	X		X				X
1.255	2.913	X		X				X
1.295	3.104	X		X				X
1.335	3.284	X		X	X			X
1.365	3.432	X		X	X			X
1.405	3.550	X		X	X			X
1.495	3.996	X		X				X
1.505	4.048	X		X				X
1.535	4.220	X		X				X
1.575	4.488	X			X			X
1.615	4.738	X		X				X
1.655	5.044	X		X				X
1.695	5.371	X		X				X
1.735	5.632	X		X				X
1.755	5.784	X		X				X
1.785	6.014	X		X				X
1.835	6.421	X		X				X
1.885	6.796	X		X				X
1.925	7.071	X			X			X
1.975	7.506	X		X				X
2.005	7.797	X		X				X
2.055	8.196	X		X
2.105	8.614	X		X				X
2.145	9.021	X		X				X
2.185	9.436	X						X
2.195	9.532	X						X
2.235	9.934	X	X					X
2.265	10.278	X		X				X
2.305	10.763	X			X			X
2.355	11.128	X		X
2.375	11.224	X	X
2.445	11.512	X	X
2.475	11.605	X	X
2.485	11.638	X	X
2.495	11.669	X	X
2.505	11.702	X	X		X
2.515	11.731	X	X		X
2.525	11.760	X	X	X	X
2.535	11.790	X	X		X
2.545	11.819	X	X		X
2.555	11.830	X	X	X
2.565	11.861	X	X	X
2.575	11.893	X	X
2.585	11.925	X	X
2.595	11.956	X	X
2.605	11.988	X	X
2.615	12.017	X	X
2.625	12.048	X	X
2.635	12.076	X	X
2.645	12.104	X	X
2.655	12.131	X	X
2.665	12.159	X	X
2.675	12.187	X	X
2.685	12.218	X	X
2.695	12.247	X	X
2.705	12.277	X	X
2.715	12.307	X	X
2.725	12.337	X	X
2.735	12.366	X	X
2.745	12.391	X	X
2.755	12.417	X	X
2.765	12.444	X	X
2.775	12.472	X	X
2.795	12.532	X	X
2.805	12.550	X	X
2.815	12.579	X	X
2.825	12.608	X	X
2.835	12.636	X		X
2.845	12.661	X		X
2.855	12.685	X		X
2.865	12.707	X		X
2.875	12.729	X		X
2.885	12.746	X		X
2.895	12.767	X		X	X
2.905	12.787	X		X
2.915	12.807	X		X
2.925	12.826	X		X	X
2.935	12.845	X		X
2.945	12.865	X		X
2.955	12.889	X		X
2.965	12.917	X		X
2.975	12.946	X		X
2.985	12.973	X		X
2.995	12.999	X		X
3.005	13.025	X		X
3.015	13.052	X		X
3.025	13.077	X		X
3.035	13.099	X		X
3.045	13.124	X	X	X
3.055	13.163	X	X	X
3.065	13.202	X	X	X
3.075	13.241	X	X	X				X
3.085	13.280	X		X
3.095	13.320	X		X
3.105	13.360	X		X
3.125	13.443	X		X
3.135	13.487	X		X
3.145	13.533	X	X	X
3.165	13.830	X		X
3.185	14.102	X		X
3.215	14.493	X		X
3.255	14.957	X		X
3.275	15.089	X		X
3.295	15.228	X			X
3.325	15.446	X	X			X
3.355	15.628	X	X			X
3.555	16.440	X	X			X
3.875	17.173	X	X			X
3.955	17.483	X	X			X
4.045	17.835	X	X			X
4.345	18.808	X	X			X
4.645	19.195	X	X			X
4.965	19.497	X	X			X
5.265	19.818	X	X			X
5.905	20.310	X	X			X
6.205	20.536	X	X			X
6.505	20.736	X	X			X
6.865	20.929	X	X			X
7.165	21.117	X	X			X
7.805	21.542	X	X			X
8.775	22.241	X	X			X
9.375	22.727	X	X			X
9.745	23.125	X	X			X
10.045	23.467	X	X
10.345	23.866	X	X