Sources, transport and deposition of surface sediments from the South China Sea
Sources, transport and deposition of surface sediments from the South China Sea
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南海表层沉积物的来源、输送和沉积
DOI：
10.1016/j.dsr.2012.09.006
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发表时间：
2013-01-01
影响因子：
2.4
通讯作者：
Chen, Han
中科院分区：
文献类型：
--
作者：
Liu, Jianguo;Xiang, Rong;Chen, Han
以粘土矿物和稀土元素等11种表层沉积物样品为基础，研究了南海中国海区沉积物的来源、输移和沉积。结果表明，南海沉积物来源一般为火山物质、生物物质和陆源物质。火山物质通常分布在吕宋岛以西(包括黄岩岛附近)。在南沙和西沙群岛周围，碳酸盐生物成因物质(如珊瑚和有孔虫)强烈发育。陆源物质主要来自大陆的大河(如珠江、红河和湄公河)和岛屿的山区河流(如台湾西南部的高坪河和加里曼丹北部的拉江河)。根据南海表层沉积物的粘土矿物分布，追踪了沉积物的运移路线。它延伸到中部盆地，甚至通过民多罗海峡与苏鲁海相连。在此基础上，根据表层沉积物中细粒组分和粘土矿物组合的稀土元素(REE)分布模式，估算了南海坡面不同位置不同沉积物来源的贡献。(C)2012爱思唯尔有限公司。保留所有权利。
Sediment sources, transport and deposition in the South China Sea (SCS) are addressed based on multiple proxies of 111 surface sediment samples, including clay minerals and rare earth elements. Results reveal that sediment sources in the SCS generally contain volcanic, biogenic and terrigenous materials. Volcanic material is typically distributed west of Luzon Island (including adjacent to Huangyan Island). Carbonate biogenic materials (e.g., coral and foraminifera) develop strongly around the Nansha and Xisha Islands. Terrigenous materials mainly derive from the continent via large rivers (e.g., the Pearl, Red and Mekong Rivers) and from islands via mountainous rivers (e.g. the Gaoping River in Southwest Taiwan and Rajang River in northern Kalimantan). According to clay mineral distributions of surface sediments from the SCS, the sediment transport route is traced. It extends to the central basin and even connects with the Sulu Sea through the Mindoro Strait. Further, based on rare earth element (REE) distribution patterns of the fine-grained fraction and clay mineral assemblage of surface sediments, contributions of various sediment sources are estimated at various locations on the SCS slope. (C) 2012 Elsevier Ltd. All rights reserved.