亚洲地球动力系统的演进与东亚矿产资源效应
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摘要
本文系统阐述了亚洲中部及邻区地球动力系统的演变进程及其所制约的区域地质和成矿特征,并提出了以下新认识和新观点:①在西伯利亚陆块与中朝—塔里木陆块之间的原"古亚洲洋"区域内是全球地史演化中具有双向侧向陆缘增生与垂向增生同时发展的"双向增生"独特地区。②"古中国陆块群"是位于劳亚古陆和冈瓦纳古陆之间独立存在的古陆。由于它的特殊位置而构成了古亚洲洋与特提斯洋的"分水岭"。③地球动力学的"内动力"归根到底来自地球自身的两个方面:一是地球自转和公转形成的离心力(拉张力)与挤压力,它是地球动力学的基础,二是地球内部永不衰败的"高热能库"。当今地震、火山等等,都是地下过饱和的高热能向地表释放的一瞬间转变为强动能的地质事件。④由地球动力系统演变打造的具有不同特征的断裂系统是控矿储矿的良好空间,因此"断裂系统找矿法"是简便有效的找矿方法之一。据此提出了4个理论指导找矿的试点和验证区。
This paper systematically deals with the process of geodynamic evolution in Central Asia and its adjacent areas as well as the regional geology and metallogenic characteristics conditioned by such action,and presents new cognitions and opinions as follows:① The original Paleo-Asian Ocean zone between Siberian landmass and Sino Korean-Tarim landmass is the special zone of "doubledirection accretion" which includes both double-direction side accretion and vertical accretion developed in the same time in the history of geology.② The "clustered continents of Paleo-China" are independent paleocontinents between Laurasia and Gondwanan.Due to their special location,they form the watershed between Paleo-Asian Ocean and Paleo-Terhys.③ In the final analysis,the "inter-power" of geodynamics comes from two sources:the first source is the centrifugal force(tension) and extrusion force formed by the rotation and revolution of the earth,constituting the basis of geodynamics.The second source is the eternal "high heat energy bank" in the earth's interior.The present earthquakes and volcanic activities all result from geological events of the instantaneous change from heat to powerful kinetic energy when the ultrasaturated high heat energy is released from the earth's surface.④ These fracture systems with different characteristics caused by the geodynamic system are good ore-controlling and ore deposition space.Hence the "mineral prediction method with fracture system" is one of the simple and effective methods.On such a basis,four test and verification zones of mineral prediction are advanced.
This paper systematically deals with the process of geodynamic evolution in Central Asia and its adjacent areas as well as the regional geology and metallogenic characteristics conditioned by such action,and presents new cognitions and opinions as follows:① The original Paleo-Asian Ocean zone between Siberian landmass and Sino Korean-Tarim landmass is the special zone of "doubledirection accretion" which includes both double-direction side accretion and vertical accretion developed in the same time in the history of geology.② The "clustered continents of Paleo-China" are independent paleocontinents between Laurasia and Gondwanan.Due to their special location,they form the watershed between Paleo-Asian Ocean and Paleo-Terhys.③ In the final analysis,the "inter-power" of geodynamics comes from two sources:the first source is the centrifugal force(tension) and extrusion force formed by the rotation and revolution of the earth,constituting the basis of geodynamics.The second source is the eternal "high heat energy bank" in the earth's interior.The present earthquakes and volcanic activities all result from geological events of the instantaneous change from heat to powerful kinetic energy when the ultrasaturated high heat energy is released from the earth's surface.④ These fracture systems with different characteristics caused by the geodynamic system are good ore-controlling and ore deposition space.Hence the "mineral prediction method with fracture system" is one of the simple and effective methods.On such a basis,four test and verification zones of mineral prediction are advanced.
引文
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[2]李廷栋,耿树方,范本贤,等.1∶250万中国西部及邻区地质图[M].北京:地质出版社,2006.Li Tingdong,Geng Shufang,Fan Benxian,et al.1∶2500000the Geological Map of Western China and Adjacent Region[M].Beijing:Geological Publishing House,1997(in Chinese with English abstract).
[3]李廷栋,等.中国岩石圈三维结构丛书(共11卷)[M].北京:地质出版社,2007.Li Tingdong,et al.3D Model of Lithospheric Structure in China Series(in11volumes)[M].Beijing:Geological Publishing House,2007(in Chinese).
[4]李廷栋,耿树方,范本贤,等.1∶250万亚洲中部及邻区地质图系[M].北京:地质出版社,2008-2010.Li Tingdong,Geng Shufang,Fan Benxian,et al.1∶2500000the Geological Map Series of Central Asia and Adjacent Areas[M].Beijing:Geological Publishing House,2008-2010(in Chinese with English abstract).
[5]程裕淇,耿树方,谢良珍,等.1∶400万中国地质图(第二版)[M].北京:地质出版社,2004.Cheng Yuqi,Geng Shufang,Xie Liangzhen,et al.1∶4000000the Geological Map of China(The second edition)[M].Beijing:Geological Publishing House,2004(in Chinese with English abstract).
[6]耿树方,严克明.扬子地台(陆块)与华北地台(陆块)属于同一个岩石圈板块[J].中国区域地质,1991,2:98-113.Geng Shufang,Yankeming.The Yangzi Platform and the North China Platform as of the same Lithosphere Plate[J].Regional Geology of China,1991,2:98-113(in Chinese with English abstract).
[7]耿树方,等.秦巴金属矿产成矿概论[M].北京:地质出版社,1994.Geng Shufang,et al.Metallogenic Outline of Metallic Ore Deposit in Qinling-Daba region[M].Beijing:Geological Publishing House,1994(in Chinese with English abstract).
[8]杨经绥,许志琴,裴先治,等.秦岭发现金刚石:横贯中国中部巨型超高压变质带新证据及古生代和中生代两期深俯冲作用的识别[J].地质学报,2002,(4):485-495.Yang Jingsui,Xu Zhiqin,Pei Xianzhi,et al.Discovery of diamond innorth Qinling:evidence for a giant UHP belt across central China and recognition of Paleozoic and Mesozoic dual deep subduction between North China and Yangtze Plates[J].Acta Geologica Sinica,2002,(4):485-495(in Chinese with English abstract).
[9]王宗起,闫臻,王涛,等.秦岭造山带主要疑难地层时代研究的新进展[J].地球学报,2009,30(5):561-570.Wang Zongqi,Yan Zhen,Wang Tao,et al.New advances in the study on ages of metamorphic strata in the Qinling orogenic belt[J].Journal of Earth Science,2009,30(5):561-570(in Chinese with English abstract).
[10]袁学诚.再论岩石圈地幔蘑菇云构造及其深部成因[J].中国地质,2007,34(5):737-758.Yuan Xuecheng.Mushroom structure of the lithospheric mantle and its genesis at depth:revisited[J].Geology in China,2007,34(5):737-758(in Chinese with English abstract).
[11]邓晋福,等.中国华北地区岩石圈三维结构及演化[M].北京:地质出版社,2007.Deng Jinfu,et al.3D Model and Evolution of Lithospheric Structure in North China[M].Beijing:Geological PublishingHouse,2005(in Chinese with English abstract).
[12]朱介寿,等.中国华南及东南沿海地区岩石圈三维结构及演化[M].北京:地质出版社,2005.Zhu Jieshou,et al.3D Model and Evolution of Lithospheric Structure in South and Southeast Coast of China[M].Beijing:Geological Publishing House,2005(in Chinese with English abstract).
[13]耿树方,刘平,王振洋,等.中国大陆侏罗纪以来六大动力体系和资源预测[J].中国地质,2009,36(3):490-503.Geng Shufang,Liu Ping,Wang Zhenyang,et al.Six major dynamic systems since Jurassic in China’s Mainland and resource prognosis[J].Geology in China,2009,36(3):490-503(in Chinese with English abstract).
[14]耿树方,等.初谈我国斑岩型铜(钼)矿区域成矿特征及找矿远景[J].地质矿产研究,地质科学院地质研究所,1976,(2):10-20.Geng Shufang,et al.Briefly discussing regional metallogentic characteristics and potentiality of porphyry Cu(Mo)deposit belt in China[J].Research of Geology and Mineral Resources,Institute of Geology Chinese Academy of Geological Sciences,1976,(2):10-20(in Chinese with English abstract).
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