检索结果-南通市图书馆

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

引用

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 Key Laboratory of Marginal Sea Geology and resources Chinese Academy of Sciences Guangzhou China china University of Geosciences (Beijing) Beijing China Research Center of Science & Technology Department CNOOC Beijing China guangzhou marine geological survey Ministry of Land & Resources Guangzhou China Ecole Polytechnique Montreal 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 {4. 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.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

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

引用

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, {4. of Geology and Mineral resources, 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

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

geological Evidence for the Presence of the Emperor Event in china

引用

Acta Geologica Sinica(English Edition) 1993年第2期67卷 235-244页

作者： Ge Tongming, Fan Limin and Liu Jian guangzhou marine geological survey, {4. of Geology and Mineral resources of china, guangzhou guangzhou marine geological survey Ministry of Geology and Mineral Resources of China Guangzhou

The presence of the reversals of the geomagnetic field within the Brunhes is indicated by paleomagnetic stuides on Cenozoic volcanic rocks in the Leizhou Peninsula, loess strata and Quaternary marine sediments in the Pearl River Mouth basin in china. These regional reversals occured at 0.58±0.13 Ma, 0.4. Ma and 0.4.—0.4. Ma respectively according to the results of K-Ar isotopic dating and climatostratigraphic and biostratigraphic analyses. The reversals equivalent to the Emperor Event is suggested.The reversals revealed in different regions with various lithologic characters in china prove that the Emperor Event is a global reversal event rather than a geomagnetic excursion, and its confirmation will permit a precise definition of the Middle/Late Pleistocene boundary.

关键词： Brunhes polarity reversal Emperor Event

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

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

引用

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 {4., guangzhou 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 {4. 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

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

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

引用

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, {4. of land 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 {4.ing 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.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A GIS Approach to Prediction of Copper Deposits

引用

Journal of Earth Science 2000年第2期19卷 88-90页

作者： Wu Xinlin guangzhou marine geological survey, guangzhou 510760 Chi Shundu Faculty of Earth resources, china University of Geosciences, Wuhan 4.0074

This paper describes three main parts of GIS technique used in prospecting of copper deposits. Firstly, this paper briefly introduces GIS technique for data preparation. Then it discusses the geo anomaly (GA) analysis and targets delineation methods, where the unit ore equivalent calculation of planar GA and the transformation and evaluation of linear GA are dominant. In addition, the method for copper prospecting is demonstrated. Finally a case study of copper deposit prospecting in Yuanjiang, Yunnan Province is presented by the use of MAPGIS.

关键词： GIS GA copper deposits prognosis target area.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

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

引用

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 {4. of land 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 China Information Center of ministry of land and resources Beijing China geological survey of Henan Province and Institute of geological Research of Henan Province Zhengzhou China geological Institute China Seismological Bureau Beijing China geological survey Institute of Qinghai Province Xining China china University of Geosciences Wuhan 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.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Enrichment mechanisms of rare earth elements in marine hydrogenic ferromanganese crusts

引用

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 Key Laboratory of marine Oil and Gas resources and marine Environment Ministry of Land and Resources Qingdao China Qingdao Institute of marine Geology China Geological Survey Qingdao China Institute of resources and Environment Shandong University of Technology Zibo China Institute of Oceanology Chinese Academy of Sciences Qingdao China Department of Oceanography Xiamen University Xiamen 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

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

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

引用

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 {4. 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 State Key Laboratory of geological Processes and Mineral resources China University of Geosciences Beijing China Key Laboratory of Lithosphere Tectonics and Lithoprobing Technology of ministry of Education China University of Geosciences Beijing China Faculty of Earth Sciences China University of Geosciences Wuhan China School of Mathematics and Information Science Guangzhou University Guangzhou 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.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

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

引用

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

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：