检索结果-南通市图书馆

Acta Geologica Sinica(English Edition) 1990年第2期64卷 211-222页

作者： Duan Weiwu Huang Yongyang guangzhou marine Geological survey, ministry of Geology and Mineral {4., guangzhou, Guangdong Chinese Academy of Geological Sciences Beijing

Based essentially on research results of calcareous nannofossils, combined with some other microfossil da-ta and several secondary depositional breaks, this paper discusses the criteria of division and comparison of themiddle and late Tertiary marine sediments, palaeogeographical and palaeoenvironmental evolution andpalaeoclimates on the northern continental margin of the South china Sea, comprising the Tainan basin, PearlRiver Mouth basin. Southeast Hainan basin and Beibu Gulf basin. Study shows that the upper Oligocene toPliocene strata in the whole area consist essentially of marine sediments except in the Beibu Gulf basin. Theyinclude littoral. neritic and deltaic sediments as well as carbonate rock-bioherm limestone. The sea advancedfrom southeast to northwest. During the transgression there appeared three culminations coinciding to thestages of deposition of nannofossil zones NN4.5, NN11 and 13-15.

关键词： Middle and Late Tertiary Palaeogeography and Palaeoenvironment on the Northern Continental Margin of the South china Sea

Southeastern extension of the Red River fault zone (RRFZ) and its tectonic evolution significance in western South china Sea

在线全文

学校读者我要写书评

暂无评论

Science china Earth Sciences 2006年第8期49卷 839-850页

作者： LIU Baoming1,2,3, XIA Bin1, LI Xuxuan1,3, ZHANG Minqiang1,3, NIU Binhua2, ZHONG Lifeng1, JIN Qinghuan1,4.& JI Shaocheng1,5 1. Key Laboratory of Marginal Sea Geology and resources, Chinese Academy of Sciences,guangzhou 51064., china 2. china University of Geosciences (Beijing), Beijing 100083, china 3. Research Center of Science & Technology Department, CNOOC, Beijing 100027, china 4. guangzhou marine Geological survey, ministry of land & resources, guangzhou 510075, china 5. Ecole Polytechnique Montreal, H3C3A7, Canada 1. Key Laboratory of Marginal Sea Geology and resources Chinese Academy of Sciences Guangzhou 510640 China 2. china University of Geosciences (Beijing) Beijing 100083 China 3. Research Center of Science & Technology Department CNOOC Beijing 100027 China 4. guangzhou marine Geological survey Ministry of Land & Resources Guangzhou 510075 China 5. Ecole Polytechnique Montreal H3C3A7 Canada

Recent geophysical surveys and basin modeling suggest that the No.1 fault in the Ying- gehai basin (YGHB) is the seaward elongation of the Red River fault zone (RRFZ) in the South china Sea (SCS). The RRFZ, which separates the South china and Indochina block, extends first along the Yuedong fault, offshore of Vietnam, and then continues southward and breaks off into two branches: the Lupar fault and the Tinjia fault. The southern extension of the Lupar fault dies out beneath the NW Borneo while the Tinjia fault extends southeast and reaches the Brunei-Sabah area. According to the gravity and geomagnetic data, and the tectonic evolution of the basins, there are different evolution histories between the Wan’an basin (WAB) and the basins in the Nansha block. The Tinjia fault may be the boundary between the Balingian block and the Nansha block. Hence, the line linking the Yue- dong fault and the Tinjia fault, which both are continental margin faults and strike-slip ones in the geological evolution histories, constitute the boundary between the Indochina and Nansha block. The Lupar fault, in contrast, is an intraplate fault within the Indochina block. The results provide new hints for reconstructing the tectonic evolution history of the RRFZ and the opening of the SCS, and also a framework for hydrocarbon prospecting in the region.

关键词： Red River fault zone, tectonic evolution, fault, extension, western South china Sea.

Tertiary Calcareous Nannofossil Biostratigraphy in the North Part of the South china Sea

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 1991年第3期65卷 321-338,343-344页

作者： Duan Weiwu and Huang Yongyang Gangzhou marine Geological survey, ministry of Geology and Mineral resources, {4. Chang Zhijun and Sun Sheping guangzhou marine Geological survey Ministry of Geology and Mineral Resources Guangzhou

The marine Tertiary sequence in the north part of the South china Sea may be divided into 18 LateOligocene to Pliocene calcareous nannofossil zones and one unnamed Eocene assemblage based on an analysisof calcareous nannofossils from 4. offshore boreholes. The unnamed Eocene assemblage has been found onlyon the northeast margin of the Zhujiangkou basin. The 18 cakareous nannofossil zones of the Late Oligoceneto Pliocene were deposited in succession, but their development degrees are different. Among the 18 calcareousnannofossil zones, those corresponding to Martini's (1971) NN4. NN5 zones, NN11 zone and NN13-NN15zones are well developed, relatively persistent laterally and also widely distributed. They are the importantmarkers for the stratigraphical subdivision and correlation of the Upper Tertiary between the various basins inthe north part of the South china Sea. Based on the calcareous nannofossils and the sedimentsry features coup-led with the foraminifer zonation in certain basins, the present paper discusses the sedimentary characteristicsof the marine Tertiary and as well as the distribution and development of the sedimentary hiatus in the *** calcareous nannofossil markers for the Upper / Lower Tertiary and the Quaternary / Tertiary boundaries,and the characteristics and geological significance of the reworked calcareous nannofossils are also discussed inthe paper.

关键词： Tertiary Calcareous Nannofossil Biostratigraphy in the North Part of the South china Sea

Transport network and flow mechanism of shallow ore-bearing magma in Tongling ore cluster area

在线全文

学校读者我要写书评

暂无评论

Science china Earth Sciences 2006年第4期49卷 397-407页

作者： DENG Jun1,2, WANG Qingfei1,2 , HUANG Dinghua3 , WAN Li4. YANG Liqiang1,2 & GAO Bangfei1,2 1. State Key Laboratory of Geological Processes and Mineral resources, china University of Geosciences, Beijing 100083, china 2. Key Laboratory of Lithosphere Tectonics and Lithoprobing Technology of ministry of Education, china University of Geo- sciences, Beijing 100083, china 3. Faculty of Earth Sciences, china University of Geosciences, Wuhan 4.0074. china 4. School of Mathematics and Information Science, guangzhou University, guangzhou 5104.5, china 1. State Key Laboratory of Geological Processes and Mineral resources China University of Geosciences Beijing 100083 China 2. Key Laboratory of Lithosphere Tectonics and Lithoprobing Technology of ministry of Education China University of Geosciences Beijing 100083 China 3. Faculty of Earth Sciences China University of Geosciences Wuhan 430074 China 4. School of Mathematics and Information Science Guangzhou University Guangzhou 510405 China

Abundant studies revealed that shallow intrusions of the Yanshanian epoch resulted in the mass mineralization of the Tongling region. Various evidences showed there existed a concealed magma chamber at ?10 km depth in the middle part of this region during Yanshanian epoch, from which the ore-forming magma was generated and then transported to the superficial layer. Yet the transport network and flow mechanism of the shallow ore-bearing magma, the key problem associ- ated with ore-forming process, was relatively little focused on. Integrate analysis of structural me- chanics, statistical fractal and geological facts suggested that NE trending high-angle fold-related thrust faults and the tessellated basement ones served as the main pathways for the shallow magma’s transporting, moreover, the saddle void spaces among adjacent strata in the folds upon this fault system provided the place for magma’s emplacement. So the folds in the upper part and faults in the lower part of the upper crust constituted the fluid’s transport and emplacement network. During the deformation of geologic body with multi-layer structure, the layers in the upper part tended to fold when received the jacking stress from the lower part, while the lower one inclined to fault undergoing loads of the upper part. And the producing probability of this structure assemblage was highly in- creased in the condition, such as in the Tongling area, that the mechanic rigidity of the lower layers was stronger than that of the upper ones. For the pre-existence of fluid-conducting network, the top magma with high volatile in the magma chamber transported rapidly to the superficial layer in dyking pattern, located in the void spaces of folds, filled and reconstructed them. The sudden drop of pres- sure caused the fluid unmixing from the magma and mass ore-forming elements concentration. Pulse activity of the dyking may be the principal reason why magmatic bodies in the Tongling area were spatially-temporally con

关键词： Tongling, structural network, magma intrusion, fractal, dyke.

Enrichment mechanisms of rare earth elements in marine hydrogenic ferromanganese crusts

在线全文

学校读者我要写书评

暂无评论

Science china Earth Sciences 2011年第2期54卷 197-203页

作者： JIANG XueJun1,2,LIN XueHui1,2,YAO De3,4.& GUO WeiDong5 1 Key Laboratory of marine Oil and Gas resources and marine Environment,ministry of {4. and resources,Qingdao 266071,china 2 Qingdao Institute of marine Geology,china Geological survey,Qingdao 266071,china 3 Institute of resources and Environment,Shandong University of Technology,Zibo 25504.,china 4.Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,china 5 Department of Oceanography,Xiamen University,Xiamen 361005,china 1. Key Laboratory of marine Oil and Gas resources and marine Environment Ministry of Land and Resources Qingdao 266071 China2. Qingdao Institute of Marine Geology China Geological Survey Qingdao 266071 China3. Institute of Resources and Environment Shandong University of Technology Zibo 255049 China4. Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China5. Department of Oceanography Xiamen University Xiamen 361005 China

A series of selective extraction experiments were conducted on marine hydrogenic ferromanganese crusts from the seamount near the Line Island to investigate the distribution of rare earth elements （REEs） and the mechanisms of combination between REEs and the hydrogenic ferromanganese crusts. The enrichment of REEs in hydrogenic ferromanganese crusts is attributed mainly to the mineral or oxide/hydroxide of the crust rather than the growth environment. The REEs are present mainly in amorphous ferric oxide/hydroxide rather than in 6-MnO2. Amorphous ferric oxide/hydroxide preferentially combines free REE3＋, while 6-MnO2 combines the REE-carbonate complexes in modern seawater. The REEs in seawater are combined more strongly with amorphous ferric oxide/hydroxides than with 6-MnO2. The positive Ce anomaly in hydrogenic ferromanganese crusts results from the oxidation of soluble Ce3＋ to insoluble Ce4. by the actively soluble oxygen of the bottom current rather than by the oxidation of δ-MnO2.

关键词： rare earth elements hydrogenic ferromanganese crust selective extraction experiment geochemistry combinationmechanism

Mineral Features of Surface Sediments and Analysis of Solid-State Mineral resourcesin Southeastern china Sea

在线全文

学校读者我要写书评

暂无评论

Journal of Earth Science 2000年第2期19卷 79-82页

作者： Du Deli Chen Hong Wang Shumin Chen Hongjun Wan Ling Research Institute of guangzhou Bureau of marine Geological survey, ministry of {4. and resources, guangzhou 510760

With the development of modern industry and the increase of human demand, it is increasingly important to prospect and exploit marine mineral resources. Based on the oceanic geological investigation references obtained from the regional geological surveying and mapping of china Sea (“Shantoufu, F 50” 1∶1 000 000) and on the data (“marine Engineering Geological Investigation Project in the Pearl River Mouth basin in the South china Sea” 1∶200 000), the authors elaborate the grain size composition, mineral composition, mineral features and distribution pattern of the surface sediments in the sea at 114.-120°E and 20°-24.N. Moreover, the analysis of the regional solid state mineral resources in the coast of Fujian, Guangdong and the west of Taiwan, shows that the main resources include littoral/neritic placers, littoral/neritic sandy gravel and ferromanganese nodule (crust). In addition, the future focus should be on the placers and sandy gravels in this littoral area.

关键词： marine sediment mineral feature solid minerals.

Age of Yingfeng rapakivi granite pluton on the north flank of Qaidam and its geological significance

在线全文

学校读者我要写书评

暂无评论

Science china Earth Sciences 2004年第4期47卷 357-365页

作者： XIAO Qinghui1,2, LU Xinxiang1,3, WANG Fei4. SUN Yangui5, WEI Xiangdong3 & XING Zuoyun6 1. Division of Granite Geology, china Geological survey, Yichang 4.3003, china 2. Information Center of ministry of {4. and resources, Beijing 100812, china 3. Geological survey of Henan Province and Institute of Geological Research of Henan Province, Zhengzhou 4.0053, china 4. Geological Institute, china Seismological Bureau, Beijing 100029, china 5. Geological survey Institute of Qinghai Province, Xining 810032, china 6. china University of Geosciences, Wuhan 4.0074. china Division of Granite Geology China Geological Survey Yichang 443003 China Information Center of ministry of land and resources Beijing 100812 China Geological survey of Henan Province and Institute of Geological Research of Henan Province Zhengzhou 450053 China Geological Institute China Seismological Bureau Beijing 100029 China Geological survey Institute of Qinghai Province Xining 810032 China china University of Geosciences Wuhan 430074 China

The Yingfeng rapakivi granite on the north flank of Qaidam is a newly discovered Proterozoic rapakivi pluton in china, which was found after the discovery of Shachang rapakivi in Miyun County, Beijing and Kuandian rapakivi in Jilin Province. Yingfeng rapakivi pluton is ex-posed on the north side of the suture belt between Qinling-Kunlun orogenic belt and North china plate. U-Pb zircon isotopic dating and Ar-Ar isotopic dating of both hornblende and K-feldspar from the Yingfeng rapakivi granite have been conducted. The results show that the age of (1776±33)Ma at the upper intercept in Concorde diagram represents the age of formation of the plu-ton, whereas the age of (526 281) Ma at the lower intercept and Ar-Ar mineral dating of horn-blende and K-feldspar correspond to the age of a later event affecting the pluton, suggesting that Yingfeng pluton has ever been affected by strong regional Caledonian-Hercynian tectonic movement after its formation. The discovery of middle Proterozoic Yingfeng rapakivi granite pro-vides a petrologic evidence for the timing of cratonization of both the continental crust basement in western china and the basement of the North china plate and for a rifting event taking place in the mid-Proterozoic, suggesting that an amalgamation of ancient china continents had ever happened during the L liang Movement?between the early Proterozoic and the mid-Proterozoic.

关键词： rapakivi, U-Pb dating, Ar-Ar dating, Kunlun-Qinling orogenic belt.

Vision navigation algorithm for mine agent based on quaternion

在线全文

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2011年第S3期21卷 610-615页

作者： LI Ke-zhao1, 4. LEI Wei-wei1, 2, GUO Zeng-zhang1, 2, WU Li-xin3, ZHANG Qin4.1. School of survey and land Information Engineering, Henan Polytechnic University, Jiaozuo 4.4.03, china 2. Key Laboratory of Mine Spatial Information Technologies of State Bureau of surveying and Mapping, Henan Polytechnic University, Jiaozuo 4.4.03, china 3. College of resources and Civil Engineering, Northeastern University, Shenyang 110819, china 4. College of Geology Engineering and Geomatics, Chang’an University, Xi’an 710054. china [a] School of survey and land Information Engineering Henan Polytechnic University Jiaozuo 454003 China [b] Key Laboratory of Mine Spatial Information Technologies of State Bureau of surveying and Mapping Henan Polytechnic University Jiaozuo 454003 China [c] College of resources and Civil Engineering Northeastern University Shenyang 110819 China [d] College of Geology Engineering and Geomatics Chang'an University Xi'an 710054 China

Autonomous relative navigation is the key technology in mining or rescuing. On the basis of mine requirement and the theories of machine vision, an autonomous relative navigation algorithm for mine agent based on quaternion was proposed. In rotation transformation, this algorithm was represented by using quaternion. Because the Jacobi matrix of this method is lower than that of Hall algorithm, the calculation efficiency is improved by using this algorithm. The results of these experiments show that the computation burden of this algorithm based on quaternion is about half that of Hall algorithm. This algorithm based on quaternion is improved as a valid way to solve the problem of mine real-time navigation.

关键词： quaternion mine agent vision navigation

Lithosphere types in North china:Evidence from geology and geophysics

在线全文

学校读者我要写书评

暂无评论

Science china Earth Sciences 2005年第11期48卷 1809-1827页

作者： QIU Ruizhao1,2, DENG Jinfu3, ZHOU Su3, LI Jinfa4. XIAO Qinghui1,5, WU Zongxu6 & LIU Cui3 1. Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, china 2. Development and Research Center, china Geological survey, Beijing 100037, china 3. china University of Geosciences, Beijing 100083, china 4. china University of Geosciences, Wuhan 4.0074. china 5. Information Center of ministry of land and resources, Beijing 100812, china 6. Institute of Geology, State Seismological Bureau, Beijing 100029, china 1. Institute of Geology Chinese Academy of Geological Sciences 100037 Beijing China 2. Development and Research Center China Geological Survey 100037 Beijing China 3. china University of Geosciences 100083 Beijing China 4. china University of Geosciences 430074 Wuhan China 5. Information Center of ministry of land and resources 100812 Beijing China 6. Institute of Geology State Seismological Bureau 100029 Beijing China

On the basis of the characteristics of geology and geophysics in North china, three types of lithosphere, namely, the cratonic, the orogenic and the rift lithospheres can be classified. In terms of petrological method (based on the information from Precambrian rock assemblages, igneous activities, deep-seated enclaves, etc.) and the relationship between seismic velocity and rock compositions, the crust-mantle petrological and chemical structure models can be set up. Researching results indicate that the geology and geophysics of North china platform bears the similar characteristics in comparison with those of the global typical cratons. The Eerduosi(Ordos) block located in the west of the North china Platform is a remnant of cratonic lithosphere after the North china platform had undergone “activation” in Mesozoic and “reconstruction” in Cenozoic times. The continental crust consists mainly of TTG rock assemblage while the subcontinental lithosphere mantle mainly consists of strongly depleted harzburgite. The craton was finally formed in late Archaean and early Proterozoic, and has been kept in stability up to present; its crustal-mantle petrological structures of lithosphere can be set up as a reference for the study of North china craton and even Sino-Korean craton. In the Mesozoic period, the middle and east areas of North china platform were activated in the Yanshanian orogenic process, the continental crust was reformed by material and heat-transfer of convective mantle and the original crustal TTG component was reconstructed to be granitic crust, and the subcontinental lithosphere man- tle was replaced by the Yanshanian harzburgite-lherzolite. The Yanshan-Taihang Mountains were the remnants of orogenic lithosphere after the rifting in eastern North china in Cenozoic. The present thickness of continental crust and lithosphere in the Yanshan-Taihang Mountains is not equal to their thickness during the Yanshanian orogenic movement because they had undergone the

关键词： lithospheric types,evidence of geology and geophysics,crust-mantle petrological structure,deep process

Distribution characteristics of seamount cobalt-rich ferromanganese crusts and the determination of the size of areas for exploration and exploitation

在线全文

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 2011年第3期30卷 63-75页

作者： HE Gaowen MA Weilin SONG Chengbing YANG Shengxiong ZHU Benduo YAO Huiqiang JIANG Xunxiong CHENG Yongshou guangzhou marine Geological survey Guangzhou 510075 China Second Institute of Oceanography State Ocean Administration Hangzhou 310012 China china Ocean Mineral resources R ＆ D Association Beijing 100860 China Beijing General Research Institute of Mining ＆ Metallurgy Beijing 100070 China National marine Information Center Tianjin 300171 China

In 2001, the International Seabed Authority （ISBA） initiated the consideration relating to the Regulations for Prospecting and Exploration for Hydrothermal Polymetallic Sulphides and Cobalt-rich Ferromanganese Crusts in the Area at its 7th session. Since then, the consideration of the Regulations has been mainly focused on the size of areas to be allocated for exploration and exploitation of the crusts. This paper, based on the investigation data and the analysis of the distribution characteristics of the crusts, suggests a model for determining the size of areas for exploration and exploitation of the crusts, taking into account various factors such as production scale, crust thickness and grade, mineable area proportion, recovery efficiency, exploration venture, and so on. Through the modeling, the paper suggests that the exploration area （the area covered by each application for approval of a plan of work for exploration of cobalt-rich crusts） shall be 4.856 km2 and the exploitation area （the mine site area） shall be 1 214.km2, for 20 years of 1 million wet tonnes annual production.

关键词： cobalt-rich ferromanganese crusts exploration and exploitation area seamounts regulation on exploration