Citation:

PANGAEA.975790 (dataset in review)

Name: X-Ray Diffraction anaylsis of sediment core PS115/2_2
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Arctic Ocean; Eurasian Ice Sheet History; Late Pleistocene; Organic carbon (OC) burial

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Abstract:

Sediment Core PS115/2-2 was recovered from the Amundsen Basin in 3600 m water depth at the eastern flank of the Gakkel Ridge during Polarstern Expedition PS115/2 in 2018 (Stein, 2019). The well-dated core is used to reconstruct in detail the interrelationship between ice-sheet dynamics and organic carbon burial in the central Eurasian Basin during the last 430 kyr, and to correlate marine and terrestrial records of the Eurasian Ice Sheet (EIS) history. Due to the complex geology of the circum-Arctic Ocean hinterland, specific mineral assemblages determined in sediment cores from the eastern Eurasian Basin may give information about the detrital sediment provenance, transport processes and EIS history (cf., Stein et al., 1994; Vogt, 1997; Wahsner et al., 1999; Stein, 2008). In this context, X-Ray diffraction (XRD) analyses were carried-out using ground bulk sediment. The relative contents of the determined minerals are expressed as ratio of the XRD single mineral peak intensity vs. sum of total analyzed intensities (Vogt, 2009). For details and methods, we refer to Stein et al. (this paper).

Keyword(s):

Arctic Ocean; Eurasian Ice Sheet History; Late Pleistocene; Organic carbon (OC) burial

References:

Stein, Ruediger (2019): The Expedition PS115/2 of the Research Vessel POLARSTERN to the Arctic Ocean in 2018. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 728, 249 pp, https://doi.org/10.2312/BzPM_0728_2019

Stein, Ruediger; Fahl, Kirsten (2004): The Laptev Sea: Distribution, Sources, Variability and Burial of Organic Carbon. In: Stein, R & Macdonald, RW (eds.), The Organic Carbon Cycle in the Arctic Ocean. Springer-Verlag, Berlin, 213-237

Stein, Ruediger; Grobe, Hannes; Wahsner, Monika (1994): Organic carbon, carbonate, and clay mineral distributions in eastern central Arctic Ocean surface sediments. Marine Geology, 119(3-4), 269-285, https://doi.org/10.1016/0025-3227(94)90185-6

Vogt, Christoph (1997): Zeitliche und räumliche Verteilung von Mineralvergesellschaftungen in spätquartären Sedimenten des Arktische Ozeans und ihre Nützlichkeit als Klimaindikatoren während der Glazial/Interglazial-Wechsel (Regional and temporal variations of mineral assemblages in Arctic Ocean sediments as climate indicator during glacial/interglacial changes). Berichte zur Polarforschung = Reports on Polar Research, 251, 309 pp, https://doi.org/10.2312/BzP_0251_1997

Vogt, Christoph (2009): Data report: semiquantitative determination of detrital input to ACEX sites based on bulk sample X-ray diffraction data. In: Backman, J., Moran, K., McInroy, D.B., Mayer, L.A., and the Expedition 302 Scientists, Proc. IODP: Edinburgh (Integrated Ocean Drilling Program Management International, Inc.), 302, https://doi.org/10.2204/iodp.proc.302.203.2009

Funding:

German Research Foundation (DFG), grant/award no. 447617953 : "Arctic Ocean Paleoceanography (ArcOP)": Pilot research and lead of IODP Expedition 377 (ArcOP-Pilot)

Coverage:

Median Latitude: 81.244115 * Median Longitude: 123.481940 * South-bound Latitude: 81.244100 * West-bound Longitude: 123.479940 * North-bound Latitude: 81.244130 * East-bound Longitude: 123.483940

Date/Time Start: 2018-09-14T14:49:00 * Date/Time End: 2018-09-14T17:41:00

Minimum DEPTH, sediment/rock: 0.01 m * Maximum DEPTH, sediment/rock: 7.64 m

Event(s):

PS115/2_2-1 * Latitude: 81.244130 * Longitude: 123.479940 * Date/Time: 2018-09-14T14:49:00 * Elevation: -3665.0 m * Location: Arctic Ocean * Campaign: * Basis: * Method/Device: Giant box corer (GKG)

PS115/2_2-2 * Latitude: 81.244100 * Longitude: 123.483940 * Date/Time: 2018-09-14T17:41:00 * Elevation: -3669.0 m * Location: Arctic Ocean * Campaign: * Basis: * Method/Device: Box corer (BC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Stein, Ruediger
2	DEPTH, sediment/rock	Depth sed	m	Stein, Ruediger		Geocode
3	AGE	Age	ka BP	Stein, Ruediger		Geocode
4	Peak area, total	Peak area tot		Vogt, Christoph	X-ray diffraction; bulk sample; peak intensity devided by sum of measured mineral intensities
5	Smectite (17-14.5 Å), relative abundance	Sme 17-14.5 Å		Vogt, Christoph	X-ray diffraction; bulk sample; peak intensity devided by sum of measured mineral intensities
6	Illite 10Å, relative abundance	Ill10Å		Vogt, Christoph	X-ray diffraction; bulk sample; peak intensity devided by sum of measured mineral intensities
7	Illite (5Å), relative abundance	Ill 5Å		Vogt, Christoph	X-ray diffraction; bulk sample; peak intensity devided by sum of measured mineral intensities
8	Kaolinite (3.58 Å), relative abundance	Kln 3.58 Å		Vogt, Christoph	X-ray diffraction; bulk sample; peak intensity devided by sum of measured mineral intensities
9	Chlorite (3.54 Å), relative abundance	Chl 3.54 Å		Vogt, Christoph	X-ray diffraction; bulk sample; peak intensity devided by sum of measured mineral intensities
10	Quartz (4.26 Å), relative abundance	Qz 4.26Å		Vogt, Christoph	X-ray diffraction; bulk sample; peak intensity devided by sum of measured mineral intensities
11	Plagioclase (3.15-3.22 Å), relative abundance	Pl 3.15-3.22 Å		Vogt, Christoph	X-ray diffraction; bulk sample; peak intensity devided by sum of measured mineral intensities
12	Kalifeldspar (3.24-3.26 Å ), relative abundance	Kfs 3.24-3.26 Å		Vogt, Christoph	X-ray diffraction; bulk sample; peak intensity devided by sum of measured mineral intensities
13	Quartz/Feldspar ratio	Qz/Fsp		Vogt, Christoph	Calculated
14	Kalifeldspar/Plagioclase ratio	Kfs/Pl		Vogt, Christoph	Calculated
15	Calcite (3.03 Å), relative abundance	Cal 3.03 Å		Vogt, Christoph	X-ray diffraction; bulk sample; peak intensity devided by sum of measured mineral intensities
16	Aragonite (3.4 Å), relative abundance	Arg 3.4 Å		Vogt, Christoph	X-ray diffraction; bulk sample; peak intensity devided by sum of measured mineral intensities
17	Aragonite (3.4 Å), relative abundance	Arg 3.4 Å		Vogt, Christoph	X-ray diffraction; bulk sample; peak intensity devided by sum of measured mineral intensities
18	Siderite (2.79 Å), relative abundance	Sd 2.79 Å		Vogt, Christoph	X-ray diffraction; bulk sample; peak intensity devided by sum of measured mineral intensities
19	Calcite/Dolomite ratio	Cal/dol		Vogt, Christoph	X-ray diffraction; bulk sample; peak intensity devided by sum of measured mineral intensities
20	Dolomite/Calcite ratio	Dol/Cal	10^-3	Vogt, Christoph	Calculated
21	Pyrite (2.71 Å), relative abundance	Py 2.71 Å		Vogt, Christoph	X-ray diffraction; bulk sample; peak intensity devided by sum of measured mineral intensities
22	Amphibole (8.1-8.6 Å), relative abundance	Amp 8.1-8.6 Å		Vogt, Christoph	X-ray diffraction; bulk sample; peak intensity devided by sum of measured mineral intensities
23	Pyroxene (2.99-2.92 Å), relative abundance	Pyrox 2.99-2.92 Å		Vogt, Christoph	X-ray diffraction; bulk sample; peak intensity devided by sum of measured mineral intensities
24	Pyroxene/Amphibole atio	Pyrox/Amph		Vogt, Christoph	Calculated

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

7994 data points

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