Accumulation of particulate organic carbon at the Eurasian continental margin during late Quaternary times ...

• Main Authors: Stein, Ruediger, Boucsein, Bettina, Fahl, Kirsten, Garcia de Oteyza, T, Knies, Jochen, Niessen, Frank
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2001
• Subjects: Gravity corer Russian type; Giant box corer; Gravity corer Kiel type; Kasten corer; MultiCorer; PL-1994; ARK-IX/4; ARK-XI/1; Professor Logachev; Polarstern; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; Quaternary Environment of the Eurasian North QUEEN; Siberian River Run-Off SIRRO; East Siberian Sea; laptev; Laptev Sea; Lomonosov Ridge
• Online Access: https://dx.doi.org/10.1594/pangaea.728243; https://doi.pangaea.de/10.1594/PANGAEA.728243

Data on the amount and composition of organic carbon were determined in sediment cores from the Kara and Laptev Sea continental margin, representing oxygen isotope stages 1-6. The characterization of organic matter is based on hydrogen index (HI) values, n-alkanes and maceral composition, indicating the predominance of terrigenous organic matter through space and time. The variations in the amount and composition of organic carbon are mainly influenced by changes in fluvial sediment supply, Atlantic water inflow, and continental ice sheets. During oxygen isotope stage (OIS) 6, high organic carbon contents in sediments from the Laptev Sea and western East Siberian Sea continental margin were probably caused by the increased glacial erosion and further transport in the eastward-flowing boundary current along the continental margin. During OIS 5 and early OIS 3, some increased amounts of marine organic matter were preserved in sediments east of the Lomonosov Ridge, suggesting an influence of nutrient-rich ... : Supplement to: Stein, Ruediger; Boucsein, Bettina; Fahl, Kirsten; Garcia de Oteyza, T; Knies, Jochen; Niessen, Frank (2001): Accumulation of particulate organic carbon at the Eurasian continental margin during late Quaternary times: Controlling mechanisms and paleoenvironmental significance. Global and Planetary Change, 31(1-4), 87-104 ...