Manganese contents and accumulation rates in reduced bottom sediments of the Sea of Okhotsk


Manganese contents in reduced sediments and accumulation rates were investigated. Their values in sediments of most of cores are background (0.03-0.07 %).Anomalous concentrations (up to 2.5 %) and accumulation rates (up to 60 mg/cm2/ka) occur near the known region of hydrothermal barite mineralization in the Derugin Basin. High accumulation rates of Mn (>10 mg/cm2/ka) also occur in Holocene sediments to south-east from the Derugin Basin. It can be assumed that high Mn contents and accumulation rates occur there due to transportation of Mn-rich water from the Derugin Basin in the near-bottom layer under the lower border of the Sea of Okhotsk Intermediate Water. Intensive Mn accumulation is also typical for the South Okhotsk Basin near the Bussol Strait. Mn accumulation rates of glacial sediments of the second oxygen isotope stage are less significant, which is presumed to be caused by paleoceanological reasons.

Supplement to: Astakhov, Anatolii S; Gorbarenko, Sergey A; Vashchenkova, N G; Volokhin, Yu G (2000): Manganese distribution and accumulation rates in bottom sediments of the Sea of Okhotsk. Tikhookeanskaya Geologiya (Pacific Geology), 19(5), 47-60

Metadata Access
Creator Astakhov, Anatolii S ORCID logo; Gorbarenko, Sergey A ORCID logo; Vashchenkova, N G; Volokhin, Yu G
Publisher PANGAEA
Publication Year 2000
Rights Creative Commons Attribution 3.0 Unported;
OpenAccess true
Resource Type Supplementary Publication Series of Datasets; Collection
Format application/zip
Size 2 datasets
Discipline Earth System Research
Spatial Coverage (140.717W, 45.357S, 154.000E, 70.835N); Sea of Okhotsk; Okhotsk Sea
Temporal Coverage Begin 1996-09-17T00:00:00Z
Temporal Coverage End 1996-09-20T00:00:00Z