Properties, sedimentation and accumulation rates, and chemical composition of bottom sediments from the Deryugin Basin, Sea of Okhotsk

Results of a study of contents and accumulation rates of Fe, Mn, and some trace elements in Upper Quaternary sediments of the Deryugin Basin are presented. Maps of average contents and accumulation rates of excessive Fe, Mn, Zn, Ba, Ni, Pb, Cu, and Mo in sediments of the first oxygen isotope stage (OIS) have been plotted. Anomalous contents and accumulation rates are confined to peripheral zones of the Deryugin sedimentary basin and large fracture zones. Different mechanisms of influence of fluid-dynamic processes on rate of hydrogenic and biogenic accumulation of ore elements are assumed.

本文呈现了德留金盆地（Deryugin Basin）晚第四纪沉积物中铁（Fe）、锰（Mn）及部分微量元素的含量与累积速率的研究结果。已针对第一氧同位素阶段（OIS）的沉积物，绘制出其中异常富集的铁、锰、锌（Zn）、钡（Ba）、镍（Ni）、铅（Pb）、铜（Cu）及钼（Mo）的平均含量与累积速率分布图。异常含量与累积速率仅分布于德留金沉积盆地的周边区域以及大型断裂带内。本研究推测，流体动力过程对成矿元素的水成与生物成因累积速率存在不同的影响机制。