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PROSPECTING DIVISION OF HEAVY PLACER MINERALS IN SURFACE SEDIMENTS OF THE SOUTHERN NANSHA TROUGH AND ADJACENT SEA AREA
Author(s): 
Pages: 13-18
Year: Issue:  1
Journal: MARINE GEOLOGY & QUATERNARY GEOLOGY

Keyword:  重砂矿物成矿元素远景区划南沙海槽;
Abstract: 南沙海槽南部海区80余个站位重砂矿物研究表明,重矿物主要受古巽他河、湄公河及加里曼丹岛的短源河流影响,具有多期、多来源沉积特点.重砂矿物为钛铁矿、金红石、锆石、独居石等,主要分布于北康暗沙和南康暗沙一带、曾母暗沙浅滩海域的钙质生物砂中.砂矿品位和成矿元素Fe、Ti、Zr含量分布表明,南沙海槽南部海域砂矿可划分为3个成矿远景区:(1)北康暗沙锆石、独居石远景区;(2)南康暗沙锆石、钛铁矿远景区;(3)曾母暗沙锆石、钛铁矿、金红石远景区.
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