Research on the Terrane Tectonics in China     

郭令智  舒良树等 《中国地球化学学报》1996,15(3):193-202

This paper summarizes the latest advances in research on the terrane tectonics of China.The terranes of China distributed around various plates may be divided into four terrane belts of different ages and sizes.i.e.,the East China,Northwest China,Southwest China and Qilling-Dabie terrane belts.Among them,the East China belt may be subdivided into three composite terrane groups;each terrane proup is composed of several terranes that were formed roughly at the same time and have distince geologic histories.The accretion of China‘s terranes involver three types;the collision type,the flake-thrusting type,and the docking type.The results of the lates study in the five widening fields and some advances in the methods of research on the terrane tectonics in China are presented in the present paper.  相似文献   

Chemostratigraphy of Flood Basalts in the Garze-Litang Region and Zongza Block: Implications for Western Extension of the Emeishan Large Igneous Province, SW China   总被引：2，自引：0，他引：2  

Pirajno FRANCO 《《地质学报》英文版》2004,78(1):61-67

The Late Permian Emeishan Large Igneous Province (ELIP) is commonly regarded as being located in the western part of the Yangtze craton, SW China, with an asymmetrical shape and a small area. This area, however, is just a maximum estimation because some parts of the ELIP were not recognized or dismembered and destroyed during the Triassic to Cenozoic tectonism. In this paper, the chemostratigraphical data of the Zongza block, the Garze-Litang belt and the Songpan-Garze block suggest that the Late Permian basalts in these areas have remarkable similarities to the ELIP basalts in petrography and geochemistry. Flood basalts in the Sanjiangkou area are composed of the lower part of the low-Ti (LT) tholeiite and the upper part of the high-Ti (HT) tholeiite, which is the same as the flood basalts on the western margin of the Yangtze craton. Flood basalts in the Zongza and Songpan-Garze areas, which are far from the Yangtze craton, consist of HT tholeiite only. This is the same as the flood basalts within the Y  相似文献   

纪念吴明远教授          下载免费PDF全文

刘国纬 《水科学进展》2004,15(1):134-134

吴明远教授离开我们11年了,每当水文界的老同志们在一起回顾我国水文事业的发展时,总是无比深情地缅怀吴明远教授对我国西南地区水文教育与科研作出的重要贡献。吴明远教授1919年10月5日出生于四川省内江县。1942年毕业于中央大学水利系,1942-1949年先后担任四川省水利局灌溉工程处技佐、技士,水利部中央水利实验处成都水工实验室助研,自贡工业专科学校、川南工业专科学校讲师。1949年后历任四川大学、成都科技大学(1994年与四川大学合并为四川联合大学)水利系副教授、教授。1992年1月25日在成都逝世。吴明远教授是我国西南地区水文高等教育的创建者和开拓者。  相似文献   

西南地质调查资料分馆1999—2003年地质调查成果馆藏资料目录          下载免费PDF全文

《沉积与特提斯地质》2004,24(1):109-112

受中国地质调查局的委托，西南分馆负责西南地区地质调查成果地质资料的检查验收、整理、汇交、保管及提供利用。分馆按照《中国地质调查局地质调查项目成果资料管理暂行办法》及《国土资源部科技成果管理办法(试行)》的要求，强化地质资料汇交管理职能，促进馆藏机构建设。  相似文献   

Earthquake triggering and delaying caused by fault interaction on Xianshuihe fault belt,southwestern China     

张秋文  张培震  王乘  汪一鹏  Michael A Ellis 《地震学报(英文版)》2003,16(2):156-165

The coseismic Coulomb stress change caused by fault interaction and its influences on the triggering and delaying of earthquake are briefly discussed.The Xianshuihe fault belt consists of Luhuo,Daofu,Kangding,Qianning and Ganzi fault.Luohuo(Ms=7.6,1973)-Kangding(Ms=6.2,1975)-Daofu(Ms=6.9,1981)-Ms=6.0,1982)earthquake is a seismic sequence continuous on the time axis with magnitude greater than6.0.They occurred on the Luhuo.Kangding,Daofu and Ganzi fault,respectively.The coseismic Coulomb stress changes caused by each earthquake on its surrounding major faults and microcracks are calculated,and their effects on the triggering and delaying of the next earthquake and aftershocks are analyzed.It is shown that each earthquake of the sequence occurred on the fault segment with coseismic Coulomb stress increases caused by its predecessors,and most after-shocks are distributed along the microcracks with relatively larger coseismic Coulomb stress increases resulted from the main shock.With the fault interaction considered,the seismic potential of each segment along Xianshuihe fault belt is reassessed,and contrasted with those predicted results ignoring coseismic Coulomb stress change,the significance of fault interaction and its effect on triggering and delaying of earthquake are emphasized.It is con-cluded that fault interaction plays a very important role on seismic potential of Xianshuihe fault belt,and the maximal change of future earthquake probability on fault segment is up to 30.5%.  相似文献   

西南地区早—中二叠世玥类复合标准序列的建立及初步研究     

殷小龙  杨湘宁  朱李鸣  史宇坤 《地层学杂志》2003,(2)

利用西南地区 10条石炭系—二叠系剖面上的类分布建立了该地区早—中二叠世类复合标准序列( CSS) ,总结了类 6 8属 6 32种在该地区的分布延限。根据类物种在复合标准序列上的分布规律 ,阐述了这一时期类动物群物种分异度的变化过程。研究结果表明 ,西南地区类物种分异度在早—中二叠世变化显著 ,共经历过三次快速增长时期 ,分别与假希瓦格亚科、米斯亚科及新希瓦格科的辐射演化有关 ;而物种分异度的两次大幅度下降则分别反映了早二叠世的动物群更替事件及中二叠世集群灭绝事件对本地区类动物的影响。  相似文献   

西南地区矿山地质环境问题与对策   总被引：2，自引：0，他引：2  

刘亚川沈冰  陈炳炎沈苏 《西北地质》2003,36(C00):48-50

西南地区地质构造和地壳结构独特，矿产资源丰富，已发现矿产地ll000多处．矿种155种，矿业已成为经济发展的支柱产业之一。但矿产开发形成的环境问题，如灾害、污染和资源破坏等亦很突出，需要制订相应对策，使矿业与环境协调发展。  相似文献   

西南地区矿业开发环境地质问题成因与防治对策     

邹光富  毛英 《西北地质》2003,36(C00):51-54

西南地区矿产资源丰富，矿业开发已成为西南地区经济发展的主要产业之一。由于多种因素的影响，矿产资源的开发引起了环境污染、资源环境破坏和矿山地质灾害等一系列环境地质问题。本文在论述西南地区矿产资源概况、由矿产资源开发引起的环境地质问题及其形成的主要原因的基础上，提出了对这些环境地质问题进行防治的措施与对策。  相似文献   

中国西南岩溶石山资源开发与环境保护对策     

郭纯青  罗亚平邓欢刘景兰  王洪涛 《西北地质》2003,36(C00):31-36

本文在对西南岩溶石山开发利用现状进行全面系统调查的基础上，介绍了中国西南岩溶石山资源分布情况及其主要自然特点，分析了其存在的主要问题——法律法规不健全、开采方式不合理、管理关系未理顺，提出了提高对岩溶石山保护重要性的认识、完善管理体制、制定岩溶石山资源保护管理法规、加大综合执法力度，重点保护、定点开发、恢复矿点生态和岩溶石山植被等保护治理恢复岩溶石山的对策和建议。  相似文献   

西南油气开发四大难题有解     

《浙江地质科技情报》2002,(1):26-27

  相似文献