Geochemistry of surface sediments from the Arabian Sea
Geochemistry of surface sediments from the Arabian Sea
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DOI：
10.1016/0025-3227(87)90033-8
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发表时间：
1987
期刊：
影响因子：
2.9
通讯作者：
R. Shankar;K. Subbarao;V. Kolla
中科院分区：
文献类型：
--
作者：
R. Shankar;K. Subbarao;V. Kolla
我们报告新的地球化学数据（Si，Al，Na，K，Rb，Sr，Mn，Cu，Ni，Fe，Zn，Co和Pb）为126表层沉积物和碱金属分配数据有限的样品从深阿拉伯海和讨论控制影响这些元素的浓度。已经确定了来自三个地貌/构造不同区域的沉积物的地球化学性质和差异。空间分辨率使我们能够识别全新世期间阿拉伯海深处发生的各种过程。地球化学数据的R模式因子分析表明，四个主导因素是导致样品中观察到的地球化学变化的原因，即嘉士伯岭热液活动、陆源贡献、氢（自生）沉淀物和生物贡献。
We report new geochemical data (Si, Al, Na, K, Rb, Sr, Mn, Cu, Ni, Fe, Zn, Co and Pb) for 126 surficial sediments and base-metal partition data for limited samples from the deep Arabian Sea and discuss the controls affecting these elemental concentrations. The geochemical nature of, and differences between, sediments from three physiographically/tectonically distinct regions have been identified. The spatial resolution allows us to discern the various processes operative in the deep Arabian Sea during the Holocene epoch.R-mode factor analysis on the geochemical data suggests that four dominant factors are responsible for the observed geochemical variations in the samples, namely; Carlsberg Ridge hydrothermal activity, terrigenous contribution, hydrogenous (authigenic) precipitates and biological contribution.