海南岛西南浅海域有用重砂资源潜力分析  

Potential Analysis of Valuable Heavy Minerals in Surface Sediments in the Shallow Waters of the Southwest of Hainan Island

作　　者：周娇 杨楚鹏 孙桂华 罗伟东 赵利 Zhou Jiao;Yang Chupeng;Sun Guihua;Luo Weidong;Zhao Li(MLR Key Laboratory of Marine Resources, Guangzhou Marine Geological Survey, China Geological Survey, Guangzhou 517600,China)

机构地区：[1]中国地质调查局广州海洋地质调查局国土资源部海底矿产资源重点实验室,广州517600

出　　处：《地质科技情报》2018年第2期89-96,共8页Geological Science and Technology Information

基　　金：中国地质调查局项目(DD20160138;DD20160140;GZH201400209);天然水合物资源数据库建设(DD20160227-05-ZKT02)

摘　　要：利用在海南岛西南部海域调查的最新资料,对2014年该区域采集的445个站位的表层沉积物样品进行了重砂矿物研究,计算了钛铁矿、锆石、金红石、磁铁矿4种有用重砂矿物的品位,分析了海南岛西南部海底有用重砂矿物品位异常值分布范围,在此基础上讨论了钛铁矿、锆石、金红石、磁铁矿品位状况及其形成条件。结果表明,钛铁矿品位异常值主要富集在沿岸带及研究区中南部,分布范围较广,有良好的成矿远景;其他3种有用重砂矿物主要富集在研究区中东部;认为重砂矿物的分布与海南岛母岩、水动力、沉积物底质类型密切相关,最终在海南岛西南部海域划分了3个潜在的有用重砂矿资源成矿远景区,都在可采水深范围之内,具有找矿意义,为将来开发提供了科学依据。Based on the latest data of the survey in the waters off the southwest of Hainan Island, this pa- per studies heavy minerals of the surface sediments of 445 stations collected in the region in 2014. The pa- per calculated the grade of 4 kinds of usefuI heavy sand minerals of ilmenite, zircon, rutile and magnetite, and analyzed the distribution range of the abnormal value of the useful heavy sand ore in the shallow waters off the southwest of Hainan Island. On this basis, the status of ilmenite, zircon, rutile and magnetite grade and their forming conditions were discussed. The results show that the anomalous grade of ilmenite is mainly concentrated in the coastal zone and the southern part of the study area, which has a wide distribu- tion range and a good prospect of mineralization. Three other useful heavy minerals are mainly concentrated in the eastern part of the study area. It is believed that the distribution of heavy minerals is closely related to the mother rock, hydrodynamic and sediment base type of Hainan Island. The other three useful heavy minerals are mainly enriched in the eastern part of the study area. The distribution of minerals is closely related to the parent rock types and hydrodynamic and sedimentary sediment types in Hainan Island. Final- ly, three potential heavy sand resources mineralization prospecting areas are divided into the southwestern waters of Hainan Island, both within the recoverable water depth.

关 键 词：表层沉积物 有用重砂矿物 异常品位 形成条件 成矿远景 海南岛 

分 类 号：P619.229[天文地球—矿床学] P624.7[天文地球—地质学]