西菲律宾海3个岩柱的重矿物组合研究  

A STUDY ON THE HEAVY MINERAL ASSEMBLAGES OF Wp1, Wp2 AND Wp40 CORES IN THE WEST PHILIPPINE SEA

作　　者：陈丽蓉[1] 徐文强[1] 张秀荣[1] 

机构地区：[1]中国科学院海洋研究所,青岛266071

出　　处：《海洋科学》1997年第1期53-56,共4页Marine Sciences

基　　金：国家自然科学基金委员会资助项目!49176 2 6 4号

摘　　要：对西菲律宾海盆西部 Wp1 ,Wp2与 Wp40 3个岩柱中的 47个沉积物样品进行了重矿物组合的研究。分析结果表明 ,调查区内的重矿物中以辉石类为主 ,其平均含量可达 40～ 5 4%。它是海底火山的产物 ,为 3岩柱中存在火山沉积类型提供了依据 ,并根据辉石类含量在不同岩柱中的差异 ,说明 Wp2与 Wp40两个岩柱中的火山物质多于 Wp1岩柱 ,而 Wp1岩柱中的风成物质则较 Wp2与wp40两岩柱更为发育。sediment samples of Wp1, Wp2 and Wp40 cores collected from the western part of West Philippine Sea were analyzed for their heavy mineral assemblages. The results of our study showed that the pyroxene is the most abundant among the heavy minerals in the area investigated. Its average content is 40 54%. The pyroxene is supplied by the eruption of the oceanic volcanoes. It indicates that the volcanic sediment is found in three cores. According to the different contents of the pyroxene in three core sediments, we can see that in the Wp2 and Wp40 core sediments the content of the volcanic sediments is higher than that in the Wp1 core sediments, while in the Wp1 core sediment the content of the aeolian dust sediment is higher than that in the Wp2 and Wp40 core sediments.

关 键 词：西菲律宾海 火山沉积 重矿物组合 

分 类 号：P736.41[天文地球—海洋地质]