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Wahsner, Monika; Müller, Claudia; Stein, Ruediger; Ivanov, Gennadiy I; Levitan, Mikhail A; Shelekhova, E S; Tarasov, Gennadiy A (1999): Distribution of clay minerals in surface sediments of the Eurasian Arctic Ocean [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.57249, Supplement to: Wahsner, M et al. (1999): Clay-mineral distribution in surface sediments of the Eurasian Arctic Ocean and continental margin as indicator for source areas and transport pathways - a synthesis. Boreas, 28(1), 215-233, https://doi.org/10.1111/j.1502-3885.1999.tb00216.x

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Abstract:
Clay-mineral distributions in the Arctic Ocean and the adjacent Eurasian shelf areas are discussed to identify source areas and transport pathways of terrigenous material in the Arctic Ocean. The main clay minerals in Eurasian Arctic Ocean sediments are illite and chlorite. Smectite and kaolinite occur in minor amounts in these sediments, but show strong variations in the shelf areas. These two minerals are therefore reliable in reconstructions of source areas of sediments from the Eurasian Arctic. The Kara Sea and the western part of the Laptev Sea are enriched in smectite, with highest values of up to 70% in the deltas of the Ob and Yenisey rivers. Illite is the dominant clay mineral in all the investigated sediments except for parts of the Kara Sea. The highest concentrations with more than 70% illite occur in the East Siberian Sea and around Svalbard. Chlorite represents the clay mineral with lowest concentration changes in the Eastern Arctic, ranging between 10 and 25%. The main source areas for kaolinite in the Eurasian Arctic are Mesozoic sedimentary rocks on Franz-Josef Land islands. Based on clay-mineral data, transport of the clay fraction via sea ice is of minor importance for the modern sedimentary budget in the Arctic basins.
Funding:
Fourth Framework Programme (FP4), grant/award no. MAS3980185: Quaternary Environment of the Eurasian North
Coverage:
Median Latitude: 79.023264 * Median Longitude: 92.931037 * South-bound Latitude: 63.367000 * West-bound Longitude: 0.165000 * North-bound Latitude: 90.000000 * East-bound Longitude: -6.766800
Date/Time Start: 1987-03-08T00:00:00 * Date/Time End: 1996-09-18T13:00:00
Minimum DEPTH, sediment/rock: m * Maximum DEPTH, sediment/rock: m
Event(s):
AG80/1-1  * Latitude: 79.788000 * Longitude: 60.892167 * Date/Time: 1995-08-13T00:00:00 * Elevation: -265.0 m * Location: Franz Joseph Land/St. Anna Trough * Campaign: AG80 * Basis: Akademik Golitsyn * Method/Device: van Veen Grab (VGRAB) * Comment: Biology
AG80/2-1  * Latitude: 79.982333 * Longitude: 62.232667 * Date/Time: 1995-08-13T00:00:00 * Elevation: -251.0 m * Location: Franz Joseph Land/St. Anna Trough * Campaign: AG80 * Basis: Akademik Golitsyn * Method/Device: Box corer (Reineck) (BCR)
AG80/3-1  * Latitude: 79.968333 * Longitude: 66.135000 * Date/Time: 1995-08-14T00:00:00 * Elevation: -350.0 m * Location: Franz Joseph Land/St. Anna Trough * Campaign: AG80 * Basis: Akademik Golitsyn * Method/Device: Water sample (WS) * Comment: surface, 25m, 50m
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
LATITUDELatitudeGeocode
LONGITUDELongitudeGeocode
Event labelEvent
Elevation of eventElevationm
DEPTH, sediment/rockDepth sedmGeocode
SmectiteSme%Wahsner, MonikaX-ray diffraction TEXTUR, clay fraction
IlliteIll%Wahsner, MonikaX-ray diffraction TEXTUR, clay fraction
ChloriteChl%Wahsner, MonikaX-ray diffraction TEXTUR, clay fraction
KaoliniteKln%Wahsner, MonikaX-ray diffraction TEXTUR, clay fraction
10 Kaolinite/Chlorite ratioKln/ChlWahsner, MonikaCalculated
11 Smectite/Illite ratioSmec/IllWahsner, MonikaCalculated
Size:
2010 data points

Data

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


Latitude

Longitude

Event

Elevation [m]

Depth sed [m]

Sme [%]

Ill [%]

Chl [%]

Kln [%]
10 
Kln/Chl
11 
Smec/Ill
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86.3933144.2370OD-009-08 -8700105820120.630.16
86.4000142.9490OD-010-06 -9880115621120.600.19
86.7992142.8160OD-011-03 -16500125221150.700.23
87.0212143.7390OD-017-01 -19500125221150.710.23
86.2920130.2660OD-024-06 -41500135321140.670.24
85.3930143.6780OD-025-05 -25260145021150.690.27
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82.700013.2000OD-042-01 085620160.780.15
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80.47308.2052PS2213-6 -897075423160.700.13
80.26876.6268PS2214-1 -552075621160.760.13
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81.149370.0047PL94-12 -6000293622140.640.81
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81.182977.5017PL94-16 -1100183921221.050.46
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