Abstract —The distribution of Sc, Co, Hf, Cr, Th, and rare-earth elements in samples of surface sediments collected during cruises 67 th and 68 th of the R/V Akademik Mstislav Keldysh in the Barents Sea and in its bays is analyzed. The results obtained suggest that the predominant part of the bottom sediments of the Barents Sea is composed of thin-grained siliciclastics that was supplied with suspended particulate matter of the North Cape (Atlantic) Current through the erosion of the northwestern Scandinavian coasts and some seafloor areas. Some sediments in the northern part of the sea were formed through the erosion of rocks of the Novaya Zemlya and Franz Josef Land. A certain role in their formation was probably played by material from Svalbard as well as by the Pechora River suspended particulate matter. The established isotopic characteristics (ε Nd , 207 Pb/ 206 Pb and 87 Sr/ 86 Sr) of surface sediments suggest that the main contribution to the formation of bottom sediments of the central Barents Sea was made by rocks of the mainland part affected by the North Cape Current. The comparison of the 87 Sr/ 86 Sr values ​​in the surface sediments of the central part of the Barents Sea and in the ice-rafted sediments carried by the Transpolar Drift showed their significant difference. This suggests a reatively small contribution of ice-rafted material to the formation of surface sediments of the Barents Sea.

中文翻译：

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巴伦支海表层沉积物中痕量和稀土元素以及 Nd、Pb 和 Sr 同位素的分布

摘要 —R/V Akademik Mstislav Keldysh 在巴伦支海及其海湾的第 67 次和第 68 次航行期间收集的表层沉积物样品中 Sc、Co、Hf、Cr、Th 和稀土元素的分布是分析了。获得的结果表明，巴伦支海底部沉积物的主要部分由细粒硅质碎屑组成，通过斯堪的纳维亚西北部海岸和一些海底区域的侵蚀提供了北角（大西洋）洋流的悬浮颗粒物. 北部海域的一些沉积物是通过新地岛和弗朗兹约瑟夫地的岩石侵蚀形成的。斯瓦尔巴群岛的物质以及伯朝拉河的悬浮颗粒物质可能在它们的形成过程中发挥了一定的作用。表层沉积物已确定的同位素特征 (ε Nd , 207 Pb/ 206 Pb 和 87 Sr/ 86 Sr) 表明，对巴伦支海中部底部沉积物形成的主要贡献是受到大陆部分岩石的影响。北开普电流。巴伦支海中部表层沉积物中的87 Sr/86 Sr值与Transpolar Drift携带的冰筏沉积物的比较显示出显着差异。这表明冰筏材料对巴伦支海表层沉积物形成的贡献相对较小。巴伦支海中部表层沉积物中的87 Sr/86 Sr值与Transpolar Drift携带的冰筏沉积物的比较显示出显着差异。这表明冰筏材料对巴伦支海表层沉积物形成的贡献相对较小。巴伦支海中部表层沉积物中的87 Sr/86 Sr值与Transpolar Drift携带的冰筏沉积物的比较显示出显着差异。这表明冰筏材料对巴伦支海表层沉积物形成的贡献相对较小。