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The tectonic settings and seismogenic tectonics of the M5.7 Jiujiang earthquake in 2005,Jiangxi Province,china

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Science china Earth Sciences 2008年第5期51卷 640-653页

作者： LI ChuanYou1, ZENG XinFu2 & ZHANG JianXi3 1 Institute of Geology, china Earthquake Administration, beijing 100029, china 2 Jiangxi Earthquake Administration, Nanchang 330039, china 3 beijing Earthquake Administration, beijing 100080, china Institute of Geology China Earthquake Administration Beijing China Jiangxi Earthquake Administration Nanchang China beijing Earthquake Administration Beijing China

The M5.7 Jiujiang earthquake in 2005 was a mid-strong one, stronger than expected to occur in the region. This paper discusses the neo-tectonic settings of this earthquake, and it is thought that the earthquake region is located in the transitional belt, a potential area inducing weak to moderately strong earthquakes, between two large different tectonic units. The results of the reconnaissance work and on-the-spot investigation after earthquake indicate that the occurrence of the M5.7 Jiujiang earth- quake is closely related with the NE-trending fault on the western margin of Ruichang Basin. From its controlling to the landforms and Quaternary depositions, geological profiles, ESR dating, etc., the ac- tivity of the Dingjiashan-Langjunshan fault bounding the basin is discussed. It suggests that this fault displays an active one in Middle Pleistocene by the outcrop. Based on the activity of the fault, and the direction and location of the ground fissures, the isoseismal lines and the nodal plane of the focal mechanism solution, it is inferred that the Dingjiashan-Langjunshan fault is the seismogenic tectonics of the M5.7 Jiujiang earthquake, and the intersection point between this fault and the active NW ones is the possible origin of location of this earthquake. Our study shows that this earthquake is not an event exceeding expectation, and that the active and invisible characteristics of the causative fault are typical in the eastern area of china.

关键词： Jiujiang earthquake tectonic settings Dingjiashan-Langjunshan fault activity seismogenic tectonics

全国主要固体矿产大中型矿山资源潜力调查资料初步汇总概述

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全国主要固体矿产大中型矿山资源潜力调查资料初步汇总概述

第八届全国矿床会议

作者： Technical Administer Office of Crisis Mine china (development and research center china geological survey beijing 100083 china) 全国危机矿山接替资源找矿项目办公室技术管理处汇总组中国地质调查局发展研究中心

中国主要固体矿产大中型矿山大多数分布于中东部地区,对第一批500余座矿山资源潜力调查资料初步评估汇总表明,占矿山总数的3／4矿山为资源型危机矿山,近200座约占1/3的调查矿山具有进一步寻找接替资源潜力;对危机矿山接替资源找矿勘查... 详细信息

中国主要固体矿产大中型矿山大多数分布于中东部地区,对第一批500余座矿山资源潜力调查资料初步评估汇总表明,占矿山总数的3／4矿山为资源型危机矿山,近200座约占1/3的调查矿山具有进一步寻找接替资源潜力;对危机矿山接替资源找矿勘查区的区域分布、主攻矿床类型、找矿预测方法及找矿勘查技术手段等资料数据开展综合汇总,结合相关数理统计分析和GIS空间分析,获得了一批数据图表,为编制“纲要”实施方案和危机矿山专项的工作部署提供了重要依据。

关键词：危机矿山资源潜力调查汇总接替资源

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"Red Beds" of Yunnan

地质学报 1941年第Z1期 157-201页

作者： M.N.BIEN (Cenozoic research Laboratory,geological survey of china)

The extensive development of the so-called ’’Red Beds" in Central andWestern Yunnan was first made known through the different reports of J.

关键词： of Yunnan der Red Beds

NEW CONCEPTS IN GLOBAL TECTONICS——A Brief Introduction of the Theory of Integrated Polygenetic Geotectonics

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Geotectonica et Metallogenia 2002年第1期26卷 108-112页

作者： XIANG Jixi1, WANG Daojin2 and XIANG Fan3(1. development &research center of china geological survey, beijing 100083, china 2. Changsha Institute of Geotectonics, CAS, 96 Tongzipo Road, Changsha 410013, china 3. Anhui Province geological survey, Hefei 230001, china) development & research center of china geological survey Beijing 100083 China Changsha Institute of Geotectonics CAS 96 Tongzipo Road Changsha 410013 China Anhui Province geological survey Hefei 230001 China

Since 1993, the first author has expanded his research on geotectonics from china to the globle, and has put forward his own new concepts in global tectonics: Theory of Integrated Polygenetic Geotectonics. In 2001, he and his coworkers published their works: two maps and a detailed explanatory note by geological Publishing House of china.

关键词： A Brief Introduction of the Theory of Integrated Polygenetic Geotectonics NEW CONCEPTS IN GLOBAL TECTONICS

SHRIMP zircon U-Pb age and Nd isotopic study on the Nyainqêntanglha Group in Tibet

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Science china Earth Sciences 2005年第9期48卷 1377-1386页

作者： HU Daogong1, WU Zhenhan1, JIANG Wan1, SHI Yuruo2, YE Peisheng1 & LIU Qisheng1 1. Institute of Geomechanics, Chinese Academy of geological Sciences, beijing 100081, china 2. Institute of Geology, Chinese Academy of geological Sciences, beijing SHRIMP Centre, beijing 100037, china Institute of Geomechanics Chinese Academy of Geological Sciences Beijing China Institute of Geology Chinese Academy of Geological Sciences Beijing SHRIMP Centre Beijing China

The Nyainqêntanglha Group is traditionally viewed as the oldest metamorphic basement in the Lhasa block, but its formation age and tectonic setting remain debate. Zircons extracted from the metamorphic sequence of volcanics and intrusions of the Nyainqêntanglha Group, 10 km west of Nam Co in northern Lhasa block, have been investigated by cathodolu- minescence (CL), backscattered (BSE) and dated by ion microprobe (SHRIMP). We conclude that the U-Pb age of 787±9 Ma of zircons from the trondhjemite imposes a constraint on maxi- mum protolith age, and minimum formation age of the Nyainqêntanglha Group is constrained by U-Pb age of 748±8 Ma of zircons from the granite. The formation age of the Nyainqêntanglha Group is consistent with sedimentary age of Greater Himalayan rocks, showing that they devel- oped coevally in an arc-basin tectonic setting of Neoproterozoic active continental margin along the northern margin of the India shield. The inherited zircons from the tholetiite and granite give older 207Pb/206Pb ages from 947 to 1766 Ma. The positive εNd( t ) value indicates that the mafic rocks were derived from the depleted mantle, but contaminated by the older continental crustal material. Integrated Nd model age and U-Pb age data provide excellent evidence for the exis- tence of Mesoproterozoic basement in the Lhasa block during Neoproterozoic time.

关键词： Nyainqêntanglha Group, SHRIMP dating, Nd isotope, Neoproterozoic, Tibet.

Study of thrust and nappe tectonics in the eastern Jiaodong Peninsula, china

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Science china Earth Sciences 2007年第2期50卷 161-171页

作者： ZHANG HongYuan1,2, HOU QuanLin3? & CAO DaiYong4 1 china University of Geosciences, beijing 100083, china 2 State Key Laboratory of geological Processes and Mineral Resources, china University of Geosciences, beijing 100083, china 3 Graduate University of Chinese Acacemy of Sciences, beijing 100039, china 4 Key Laboratory of Coal Resources (CUMT), Ministry of Education, beijing 100083, china china University of Geosciences Beijing 100083 China State Key Laboratory of geological Processes and Mineral Resources China University of Geosciences Beijing 100083China Graduate University of Chinese Acacemy of Sciences Beijing 100039 China Key Laboratory of Coal Resources (CUMT) Ministry of Education Beijing 100083 China

Thrust and nappe tectonics have affected the eastern Jiaodong Peninsula, the easternmost terminal of the Sulu Ultra-high Pressure Metamorphic Belt. Four nappes have been mapped, named respectively the Shidao, Rongcheng, Mishan and Mouping nappes. The methods used included multi-scale struc- tural analysis and structural chronology analysis. These nappes define four deep level slip-thrust shear zones that were mainly active in the Mesozoic. The amount of ductile deformation decreases from the Shidao to Rongcheng to Mouping to Mishan shear zones, and shows an inverse relationship with temperature. 40Ar/39Ar chronological analysis and the chronological results of former workers reveal four movement steps defined by the development of thrusts and nappes in the late Triassic (210-180 Ma), extensional movement from the Jurassic to early Cretaceous (180-130 Ma), slip-thrust movement in the Early Cretaceous (130-120 Ma), and extensional movement since the Late Cretaceous (120 Ma). The order of boundary shear zone motion in the period of slip-thrust movement during the Early Cre- taceous (130-120 Ma) was along the Shidao, Rongcheng, Mouping and finally the Mishan shear zone. This resulted in clockwise rotation of the nappes relative to block west to the Tan-Lu Faults. Because of the similar evolutionary history of the Tan-Lu Faults and the thrust and nappe structure in the eastern Jiaodong Peninsula, slip dislocation along the Tan-Lu Faults might have been absorbed by thrust and nappe tectonics in the Jiaodong area in the Mesozoic era, resulting in much less dislocation on the Tan-Lu faults in North Eastern china than that in south along the Jiaodong Peninsula.

关键词： eastern Jiaodong Peninsula Mesozoic era thrust and nappe tectonics structural features geochronology shear zones

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塔里木盆地典型海相成因天然气藏成藏模式

石油学报 2001年第1期22卷 14-18页

作者：王红军周兴熙中国石油勘探开发研究院地质所北京100083

塔里木克拉通盆地海相成因的天然气藏分布于塔北、塔中和巴楚隆起上 ,它们在气组分、相态、非烃组分和碳同位素上具有各自的特征。通过对轮南 5 9井石炭系、塔中 1井奥陶系凝析气藏和玛 4井奥陶系干气气藏三个典型气藏中天然气成因分析 ... 详细信息

塔里木克拉通盆地海相成因的天然气藏分布于塔北、塔中和巴楚隆起上 ,它们在气组分、相态、非烃组分和碳同位素上具有各自的特征。通过对轮南 5 9井石炭系、塔中 1井奥陶系凝析气藏和玛 4井奥陶系干气气藏三个典型气藏中天然气成因分析 ,识别出干酪根裂解气和原油裂解气 ,综合地质分析 ,总结出干酪根晚期裂解干气充注古油藏形成凝析气藏 ;古油藏晚期发生内部原油向气的热裂解形成凝析气藏 ;古油藏裂解形成的干气运移至新的圈闭形成干气气藏等 3种类型的气藏成藏模式。

关键词：塔里木盆地海相成因天然气藏凝析气干气成藏模式

Rare Earth Elements in Manganese Nodules from the Central Pacific Ocean

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Acta Geologica Sinica(English Edition) 1992年第4期66卷 371-383页

作者： Guo Shiqin Sun Wenhong china Ocean Mineral Resources research and Developmetn Association Institute of Mineral Deposits, Chinese Academy of geological Sciences Liu Linqun china Ocean Mineral Resources research and development Association China

Manganese nodules in areas CP and CC of the central Pacific are rich in REE. Comparatively speaking,the REE contents of nodules in area CP are hihger than those in area CC; and the REE contents of nodulesfrom seamounts are higher than those of nodules from sea-floor plains and hills. Within the nodules, the REEshow a zonal distribution. The REE distribution patterns of the nodules are similar to those of the sedimentsand have a mirror image relationship with those of the sea water. Trivalent REE were not obviously differenti-ated when they entered into the nodules from the sea water.A major factor causing the difference of REE abundances between nodules and sediments is the redoxconditions. The redox intensity of the ocean floor of the Pacific is controlled mainly by Antarctic Bottom Wat-er(AABW), The iron-bearing facies in the nodules is the main carrier of REE.

关键词： manganese nodule rare earth element Pacific

Multiphase tectonic movements, cap formations and evolution of the Majiang paleo-reservoir

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Petroleum Science 2011年第2期8卷 127-133页

作者： Tang Liangjie Cui Min State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum Beijing 102249 China CNOOC research Institute Beijing 100027 China

The Majiang paleo-reservoir is a typical destroyed hydrocarbon reservoir, buried in carbonate strata of china＇s southern marine-facies. Field geological explorations, interpretations of seismic profiles and balanced cross-section restorations around this paleo-reservoir reveal that its formation and evolution have been restricted by multiphase tectonic movements of different intensities. A regional tectonic mechanism and model have been suggested for the formation and evolution of the Majiang paleo- reservoir. geological field exploration has been carried out along three typical Silurian cross-sections and rock samples were tested in combination with water-rock interaction. Based on the result of cap tests, the planar distribution, the residual thickness, the erosion thickness and the preservation conditions, the Silurian mudstone cap is discussed around the Majiang paleo-reservoir. Combining the hydrodynamic conditions of its formation and evolution and its tectonic movements, we determined the fact that the thicker the cap is, the more resistant it is to hydrodynamic destruction. The multi-phase formation and destructive geological model of the paleo-reservoir is established through an overall analysis of multi- phase tectonic evolutions, cap developments, hydrodynamic conditions and solid mineral metallogenic ages measured by Rb-Sr, Pb and Sm-Nd isotope techniques.

关键词： Multiphase tectonic evolution key tectonic changes cap evolution hydrocarbonpreservation Majiang paleo-reservoir