冲绳海槽岩浆活动研究进展及思考  

Advances and Developments in Study of the Magmatism in the Okinawa Trough

作　　者：李怀明[1] 翟世奎[1] 

机构地区：[1]中国海洋大学海洋地球科学学院,山东青岛266100

出　　处：《地质论评》2008年第1期120-124,共5页Geological Review

基　　金：国家重大基础研究发展规划"地球圈层相互作用中的深海过程和深海记录"(编号G2000078503);国家自然科学基金"冲绳海槽中部沉积物元素地球化学研究(编号40306009)的成果

摘　　要：冲绳海槽以其特有的构造地质环境吸引着众多地质学者的关注。针对冲绳海槽地区岩浆作用过程的研究是其中的核心内容之一。本文综述了近年来冲绳海槽岩浆源区物质特征、岩浆形成演化过程及其控制机制等方面研究取得的主要成果,并在此基础上指出了目前冲绳海槽岩浆活动研究工作中存在的科学问题,提出利用铀系不平衡方法研究冲绳海槽岩浆活动的新思路,同时探讨了今后一段时间内的研究方向应该集中在以下四个方面:①菲律宾板块俯冲的脱水过程对冲绳海槽岩浆活动的作用;②俯冲过程中深海沉积物对冲绳海槽岩浆的贡献;③冲绳海槽岩浆熔融的控制因素;④冲绳海槽火山活动和海底热液活动的成因关系。Many geologists have been interested in the Okinawa Trough due to its unique tectonic environment. The magmatism is regarded as one of the key questions in the Okinawa Trough. The advances associated with the magmatism in the trough have been overviewed, including the studies about the characters of the magmatic sources, the processes of the magma melting and evolution and the regularities of melting. Based on＇these, the difficult questions on this field have been presented and a new idea that using the method of U-series disequilibria to study the magmatism in Okinawa Trough has been brought forward. Meanwhile, some research directions about the study of magmatism in the Okinawa Trough should be paid much attention to in the future, e. g. ①the influence of the Philippine subduction slab on the magmatism processes, ②the implications of the subducting sediment for the magma, ③the controlling factors of the magma melting, ④the link between the magmatism and the seafloor hydrothermal activity.

关 键 词：冲绳海槽 铀系不平衡 岩浆活动 

分 类 号：P738[天文地球—海洋地质]