Organic Geochemistry of Barents Sea Sediments

Belyaeva, Alexandra N; Daniushevskaya, A. I.; Romankevich, E. A.

doi:10.1007/978-1-4613-0677-1_28

Cited by 4 publications

(1 citation statement)

References 6 publications

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“…Compared to other Arctic shelves, the river discharge (163 km3/year) into the Barents Sea is low. Only the Pechora River is a main freshwater source for this sea (Belyaeva et al 1989). The main processes responsible for sediment distribution are winnowing from the banks and subsequent redeposition in the deeper troughs and depressions (200-250 m) and sedimentation from melting sea ice.…”

Section: Modern Environmentmentioning

confidence: 99%

Clay‐mineral distribution in surface sediments of the Eurasian Arctic Ocean and continental margin as indicator for source areas and transport pathways — a synthesis

Wahsner

Müller

Stein

et al. 1999

Boreas

133

129

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G. 1999 (March): Clay-mineral distribution in surface sediments of the Eurasian kctic Ocean and continental margin as indicator for source areas and transport pathwaysa synthesis. Boreas, Vol. 28, pp. 215-233. Oslo. ISSN 0300-9483. 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.

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Section: Modern Environmentmentioning

confidence: 99%