Biogenic components of the Baltic Sea sediments |
| |
| Affiliation: | 1. Nature Research Centre, Akademijos Str. 2, LT-08412, Vilnius, Lithuania;2. Center for Physical Sciences and Technology, Savanorių Ave. 231, LT-02300, Vilnius, Lithuania;3. Vytautas Magnus University, Vileikos 8, LT-44404, Kaunas, Lithuania;1. Institute of Polar Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei City, Anhui Province 230026, PR China;2. State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, PR China;1. Center for Physical Sciences and Technology, Savanorių ave. 231, LT-02300 Vilnius, Lithuania;2. Center for Nuclear Technologies, Technical University of Denmark, Risø Campus, DK-4000 Roskilde, Denmark;1. State Research Institute Center for Physical Sciences and Technology, Savanorių 231, LT-02300 Vilnius, Lithuania;2. Paul Scherrer Institut, 5232 Villigen PSI, Switzerland;1. Faculty of Geography, Lomonosov Moscow State University, Moscow 119991, Russia;2. Institute of Geography of Russian Academy of Sciences, Staromonetny 29, 109017 Moscow, Russia;1. Department of Earth and Environmental Science, Temple University, Philadelphia, PA 19122, USA;2. Department of Marine and Ecological Sciences, Florida Gulf Coast University, Fort Myers, FL 33965, USA;3. Department of Geosciences, Smith College, Northampton, MA 01063, USA;4. Open Access Centre for Marine Research, Klaipėda University, LT-92294, Klaipėda, Lithuania;5. Faculty of Natural Sciences, Vilnius University, LT-03100, Vilnius, Lithuania;6. Department of Anthropology, Miami Univesity, Oxford, OH 45056, USA;7. Center for Integrative Geosciences, University of Connecticut, Storrs, CT 06269, USA;8. Department of Quaternary Geology, Geological Survey of Lithuania, LT-03123, Vilnius, Lithuania |
| |
| Abstract: | The contents of biogenic components in 1511 samples of the Baltic Sea sediments (depth range 0–5 cm) are studied, and maps of their distribution are compiled. The sediments contain < 13.03% Corg, < 1.33% N, < 9.0% SiO2am, < 5.0% CaCO3, and < 1.45% P. The maximum and elevated contents of components are found in the mud of the sea deeps. The more fraction < 0.01 mm the sediments contain, the higher are the contents of components. Four facies types of carbonaceous mud, precursors of shales, have been recognized: (1) shallow-water (lagoon) lime sapropel, (2) carbonaceous mud of the shallow-water Gulf of Finland, (3) carbonaceous mud of the middle-depth Baltic Sea, and (4) laminated carbonaceous metal-bearing mud. The latter type of mud is strongly enriched in manganese and ore-forming trace elements, which points to its formation in the stagnant environment. In composition the Baltic Sea mud is similar to petroliferous mudstones of the Bazhenov Formation in West Siberia and to ancient black shales. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
