摘要
为揭示造山带物质组成和结构构造,发展洋板块地质学,阐明大陆形成演化过程和动力来源,应用板块构造理论和地质学方法,对造山带俯冲增生杂岩带、蛇绿岩带等大洋岩石圈板块地质建造、结构构造进行系统研究,寻找俯冲带岛弧前弧火成岩组合;研究洋板块初始俯冲过程中,从前弧玄武岩到玻安岩、高镁安山岩,再到弧拉斑玄武岩和钙碱性熔岩的岩浆作用分阶段递进演变历史,以揭示洋盆向大陆转化的原始弧性质和前弧火成岩组合及洋陆转换过程,为建立和发展洋板块地质学奠定科学基础.
In order to reveal the material composition and the structure of the orogenic belt,we propose the ocean plate geology,which is used to explain the process of continental formation and evolution and the source of dynamics.Based on the theory of plate tectonics and geological research methods,the subduction-accretionary complex,the ophiolite belt,and other oceanic lithospheric plate geological formations and structure construction in the orogenic belt are systematically studied in order to find the igneous rock association of the front arc in the subduction zone.In the initial subduction process of the ocean plate,the magmatism from the forearc basalts(FAB) to the boninite,high-Mg andesite(HMA),to the arc tholeiite and calc-alkaline lava and its different stage evolution,are studied in order to identify the characteristics of the original arc and front arc igneous rock association,which reveals the ocean-continent transition in the evolution process from ocean basin to the continent,laying a scientific foundation for the establishment and development of ocean plate geology.
作者
李廷栋
肖庆辉
潘桂棠
陆松年
丁孝忠
刘勇
Li Tingdong;Xiao Qinghui;Pan Guitang;Lu Songnian;Ding Xiaozhong;Liu Yong(Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China;Information Center of Ministry of Natural Resources of People's Republic of China,Beijing 100830,China;Chengdu Geological Survey Center,China Geological Survey,Chengdu 610081,China;Tianjin Geological Survey Center,China Geological Survey,Tianjin 300170,China;Hebei University of Geosciences,Shijiazhuang 050031,China)
出处
《地球科学》
EI
CAS
CSCD
北大核心
2019年第5期1441-1451,共11页
Earth Science
基金
中国地质调查局项目(No.DD2016-0345)
关键词
洋板块地质学
俯冲增生杂岩带
洋内弧
洋陆转换
构造地质
ocean plate geology
subduction-accretionary complex
intra-oceanic arc
ocean-continent transition
tectonics
