Polyakova, Elena I; Pavlidis, Yury A; Levin, A A (1992): (Table 1) Grain size composition of surface sediments from the Barents Sea shelf. PANGAEA, https://doi.org/10.1594/PANGAEA.759112, Supplement to: Polyakova, EI et al. (1992): Factors governing diatom fossil distributions in the surface layer of bottom sediments on the Barents Sea shelf. Oceanology, 32(1), 112-119
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Abstract:
The surface layer of bottom sediments on the Barents Sea shelf has an irregular but generally very low abundance of diatoms. Tests of species belonging to present-day diatom flora were absent in nearly half of samples; their abundance was only a few shells per gram of dry sediment in 30% of the samples, it was up to 100 shells per gram in 9% of the samples, and was in thousands of shells per gram in only 13% of the samples. The lowest abundances of diatom shells were found in sediments of the eastern and northeastern parts of the sea owing to unfavorable sedimentation conditions and deficiency of dissolved silica in water. But distribution of diatom species on the surface of bottom sediments is strictly consistent with their present-day ranges. About 30% of the samples contained re-deposited Cretaceous and Paleogene diatoms indicating that bottom sediments have largely formed by scouring and re-deposition of underlying material.
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Median Latitude: 74.371700 * Median Longitude: 48.442767 * South-bound Latitude: 73.571700 * West-bound Longitude: 41.503300 * North-bound Latitude: 74.961700 * East-bound Longitude: 52.973300
Minimum DEPTH, sediment/rock: 0.010 m * Maximum DEPTH, sediment/rock: 0.025 m
Event(s):
PS-1268 * Latitude: 73.571700 * Longitude: 41.503300 * Elevation: -330.0 m * Location: Barents Sea * Campaign: PS-16 * Basis: Professor Shtokman * Method/Device: Grab (GRAB)
PS-1301 * Latitude: 74.961700 * Longitude: 50.851700 * Elevation: -148.0 m * Location: Barents Sea * Campaign: PS-16 * Basis: Professor Shtokman * Method/Device: Gravity corer (GC)
PS-1303 * Latitude: 74.581700 * Longitude: 52.973300 * Elevation: -226.0 m * Location: Barents Sea * Campaign: PS-16 * Basis: Professor Shtokman * Method/Device: Grab (GRAB)
Parameter(s):
# | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
---|---|---|---|---|---|---|
1 | Event label | Event | ||||
2 | Latitude of event | Latitude | ||||
3 | Longitude of event | Longitude | ||||
4 | Elevation of event | Elevation | m | |||
5 | Area/locality | Area | Polyakova, Elena I | |||
6 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
7 | Depth, top/min | Depth top | m | Polyakova, Elena I | ||
8 | Depth, bottom/max | Depth bot | m | Polyakova, Elena I | ||
9 | Size fraction > 1 mm, gravel | >1 mm | % | Polyakova, Elena I | Grain size, sieving | |
10 | Size fraction 1.000-0.500 mm, 0.0-1.0 phi, coarse sand | 1-0.5 mm | % | Polyakova, Elena I | Grain size, sieving | |
11 | Size fraction 0.500-0.250 mm, 1.0-2.0 phi, medium sand | 500-250 µm | % | Polyakova, Elena I | Grain size, sieving | |
12 | Size fraction 0.250-0.100 mm | 250-100 µm | % | Polyakova, Elena I | Grain size, sieving | |
13 | Size fraction 0.100-0.050 mm | 100-50 µm | % | Polyakova, Elena I | Grain size, sieving/settling tube | |
14 | Size fraction 0.050-0.010 mm | 50-10 µm | % | Polyakova, Elena I | Grain size, sieving/settling tube | |
15 | Size fraction 0.010-0.005 mm | 10-5 µm | % | Polyakova, Elena I | Grain size analysis after Petelin (1967, Nauka, Moscow) | |
16 | Size fraction 0.005-0.001 mm | 5-1 µm | % | Polyakova, Elena I | Grain size analysis after Petelin (1967, Nauka, Moscow) | |
17 | Size fraction < 0.001 mm, clay | <1 µm | % | Polyakova, Elena I | Grain size analysis after Petelin (1967, Nauka, Moscow) |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
36 data points