Citation:

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

Name: (Table 1) Grain size composition of surface sediments from the Barents Sea shelf
Published: 1992
License: https://creativecommons.org/licenses/by/3.0/

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

RIS Citation BibTeX Citation Text Citation Facebook TwitterShow Map Google Earth

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: * Basis: Professor Shtokman * Method/Device: Grab (GRAB)

PS-1301 * Latitude: 74.961700 * Longitude: 50.851700 * Elevation: -148.0 m * Location: Barents Sea * Campaign: * Basis: Professor Shtokman * Method/Device: Gravity corer (GC)

PS-1303 * Latitude: 74.581700 * Longitude: 52.973300 * Elevation: -226.0 m * Location: Barents Sea * Campaign: * 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

Data

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

1 Event	2 Latitude	3 Longitude	4 Elevation [m]	5 Area	6 Depth sed [m]	8 Depth bot [m]	9 >1 mm [%]	10 1-0.5 mm [%]	11 500-250 µm [%]	12 250-100 µm [%]	13 100-50 µm [%]	14 50-10 µm [%]	15 10-5 µm [%]	16 5-1 µm [%]	17 <1 µm [%]
PS-1268	73.5717	41.5033	-330	Central Basin	0.025	0.05	0.24	0.19	0.71	3.79	2.94	1.75	14.06	26.28	50.04
PS-1303	74.5817	52.9733	-226	Novaya Zemlya Trough	0.010	0.02	4.62	0.36	1.69	4.74	1.85	0.48	22.87	29.90	33.49
PS-1301	74.9617	50.8517	-148	Admiralty Ridge	0.010	0.02	1.28	0.27	2.87	41.39	21.60	3.48	6.13	8.33	14.65