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引用本文:李廷栋1,2. 中国岩石圈三维结构专项研究主要进展和成果[J]. 中国地质, 2006, 33(4): 689-699.
LI Ting-dong1,2. Main advances and achievements in the special-subject study of the 3D lithospheric structure of China[J]. Geology in China, 2006, 33(4): 689-699(in Chinese with English abstract).
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中国岩石圈三维结构专项研究主要进展和成果
李廷栋1,21,2
1. 国土资源部咨询研究中心,北京 100035;2. 中国地质科学院,北京 100037
摘要:
提要:“中国岩石圈三维结构”专项研究取得诸多新发现和新成果:建成中国第一个“岩石圈三维结构数据库”;建立了中国岩石圈结构模型;深化了对中国东部岩石圈、软流圈性状、结构的认识,证明岩石圈与软流圈之间存在呈“层块结构”的过渡带,在东亚至西太平洋地区70~250 km深度发现一巨型低速异常带;揭示中国东部岩石圈呈现明显的“上老下新”的年龄结构;初步建立了中国大陆岩石圈岩石学结构模型,把中国大陆及毗邻海域岩石圈划分为5种类型;提出中国岩石圈构造单元划分方案,把中国大陆及毗邻海域划分为2个岩石圈构造域和6个岩石圈块体;证实青藏高原存在巨型南北向构造;在地质上获得一些新发现和新认识。
关键词:  岩石圈  三维结构  进展  成果
DOI:
分类号:
基金项目:国土资源部专项计划项目(20010103)资助。
Main advances and achievements in the special-subject study of the 3D lithospheric structure of China
LI Ting-dong1,21,2
1. Consulting Research Center, MLR, Beijing 100035, China;2. Chinese Academy of Geological Sciences, Beijing 100037, China
Abstract:
Abstract: Many new findings and achievements have been obtained in the special-subject study of the "3D lithospheric structure of China". They are as follows: China's first "3D lithospheric structure database" has been established; China's lithospheric structure model has been constructed; the knowledge of the behaviors and structures of the lithosphere and asthenosphere below eastern China have been deepened, it has been proved that there exists a transition zone with the "layer and block" structure between the lithosphere and asthenosphere, and a giant low-velocity anomaly belt has been found at 70~250 km depth from East Asia to the western Pacific region; an apparent age structure of being "older in the upper part and younger in the lower part" has been revealed in the lithosphere below eastern China; a petrological structure model of the lithosphere of continental China has been constructed, in which five types of lithosphere below continental China and its adjacent sea areas are distinguished; a classification scheme of lithospheric tectonic units of China is proposed, in which continental China and its adjacent areas are divided into two lithospheric domains and six lithospheric blocks; the existence of a gigantic latitudinal structure on the Qinghai-Tibet Plateau has been verified; and some new findings and knowledge have been obtained in the geological context.
Key words:  lithosphere  3D structure  progress  achievement