南海东部表层沉积物中轻矿物分布与来源  

The distributions and origins of the light clastic minerals in the surface sediments of the Eastern South China Sea

作　　者：季福武[1] 林振宏[1] 杨群慧[1] 时振波[1] 

机构地区：[1]中国海洋大学地球科学学院,山东青岛266003

出　　处：《海洋科学》2004年第2期32-35,共4页Marine Sciences

基　　金：国家海洋局海底科学重点实验室课题(2001 -2)

摘　　要：对南海东部158个表层沉积物样品的分析结果表明 ,轻矿物来源多样 ,生物成因矿物含量高。除去生物骨屑后 ,沉积物中白云母等碎屑轻矿物的分布规律显示 ,华南大陆是南海东部陆源碎屑物质的主要来源 ,其影响可达17°N线以南。火山玻璃主要分布于15°N线附近 ,其中褐色火山玻璃主要来源于本地海山物质 ,为火山玻璃的主体 ,而无色火山玻璃含量较低 ,它可能来自附近火山喷发物。A study on the 158 surface sediment samples which were collected from the Eastern South China Sea shows that the light minerals in the sediments have several sources. The content of carbonate authigenic minerals are high. The distribution of the light minerals, such as moscovite, suggest that most terrigenous detritus were derived from the Southern China Continent, and they have reached 17°N. Volcanic glasses occupied the mid-south part of the study area, and they have varied sources.

关 键 词：南海 表层沉积物 轻矿物 分布 来源 

分 类 号：P736.21[天文地球—海洋地质]