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PREDICTING HIDDEN STRUCTURES AND ORE DEPOSITS IN XIANGNAN AREA

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PREDICTING HIDDEN STRUCTURES AND ORE DEPOSITS IN XIANGNAN AR...

Beijing(89) International Symposium on Exploration geophysics

作者： Li,Shaolian Geology institute of Hunan,China Nonferrous Metal Industry Co.

＜正＞Xiangan,the southern part of Hunan province of China,is one of the important areas producing nonferrous metals in *** are a lot of famous mines *** formation and distribution of ore deposits are mainly controlled by structures,and most of the ore deposits are associated with granitic magmatism and are burried in certain *** of fractures and granite intrusions show obvious paticular characteristics of gravity and magnetic *** can be used to analyze hidden geological

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PROVENANCE AND TECTONIC SETTING OF THE PROTEROZOIC TURBIDITES IN HUNAN,SOUTH CHINA:GEOCHEMIcaL EVIDENCE

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PROVENANCE AND TECTONIC SETTING OF THE PROTEROZOIC TURBIDITE...

中国科学院地质与地球物理研究所2.02.术年会

作者： X.X.GU~(a,b,c),J.M.LIU~d,M.H.ZHENG~b,J.X.TANG~b,AND L.QI~a a.institute of Geochemistry,Chinese Academy of Sciences,Guiyang,Guizhou 550002.P.R.China b.Department of Resources and Economics,Chengdu university of Technology,Chengdu,Sichuan 610059,P.R. China c.institute of Mineralogy and Petrography,university of Innsbruck,Innrain 52.A-602. Innsbruck,Austria d.Research Center for Mineral Resources Exploration,Chinese Academy of Sciences,Beijing 100101,P.R.China

The geochemical composition of the Middle-Upper Proterozoic turbidites in Hunan, South China is related to provenance and tectonic setting of the sedimentary *** turbidites are characterized by moderate SiO2.contents(Al2.3/SiO2.typically 0.1-0.3) and moderate K2./Na2. ratios(generally 0.1-0.3) but relatively high Fe2.3 1 MgO contents(5-10 wt%) and unusually low contents of caO(typically,1 wt%).Abundances of ferromagnesian trace elements and incompatible elements are *** REE patterns are uniform and similar to the upper continental crust and typical post- Archean shales,with LREE enrichment,flat HREE, and significant negative *** general,the slates show higher contents of Fe2.3 1 MgO and ferromagnesian trace elements,and lower ratios of La/Sc and Th/Sc than the associated graywackes,suggesting that more mafic materials were incorporated into the clay-size fraction. Compared to the Upper Proterozoic Banxi Group,the Middle Proterozoic Lengjiaxi Group has higher concentrations for most ferromagnesian trace elements and lower La/Sc ratios,implying more mafic components in the provenance of the *** relationship among alkali and alkaline earth elements,the Chemical Index of Alteration(CIA),and the Th/U ratios indicate that the source area was affected by a moderate weathering *** main source was old continental crust(the Yangtze craton) dominated by felsic rocks of magmatic origin,with a variable admixture of mafic components from continental island arcs(e.g.,the Fangjingshan-Dayong and the Sibao-Yiyang island arc chains).The flysch deposition took place in a back arc basin,rather than a failed intracontinental rift as proposed by some *** suggest that suturing between the Yangtze and cathaysia block did not occur until late Proterozoic time and that the final assembly of the supercontinent Rodinia in South China was probably marked by the Jingning orogeny at;0.8 Ga.

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Mining Land Damage Assessment and Analysis Based on ArcGIS

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Mining Land Damage Assessment and Analysis Based on ArcGIS

2.10 International Conference on Remote Sensing (ICRS 2.10)

作者： Longquan Chen Fengqiong Zou Graduate Department Jiangxi university of Science and Technology Ganzhou China

Serious hazard for mining subsidence, and the prediction of traditional methods of land use change has many defects, this paper mainly analyzes mining subsidence’s influence on land use by using GIS. Put data of mining subsidence and layer’s data of land use into ArcGIS, then change region of mining subsidence to regions of the different deep subsidence, then intersect layer of mining subsidence with one of land use, the different deep subsidence and land use database are spatially analyzed and the different lands are found out and their areas are calculated, ArcGIS expresses the result in the way of image. In the end do analysis of GIS according to the calculated result.

关键词： mining GIS mining subsidence spatial analysis ArcGIS land use planning

青藏高原地壳上地幔形成与演化的地球物理研究

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物探与化探 1987年第1期 1-11页

作者：袁学诚王式李立金国元陈大尤赵子言周烑秀陈显尧鲁连仲王懋基刘行义地质矿产部地球物理地球化学勘查研究所地质矿产部地球物理地球化学勘查研究所中法喜马拉雅研究队地球物理分队

近年来,我国在青藏高原取得了大量地球物理资料,1980- 1982.中法合作又在西藏得到丰富的深部地球物理资料。青藏高原是一个整体。它的构造活动可以分为南、北、中三个带。中部是整体隆升,且已达到均衡。南北两缘受到强烈挤压、叠覆,是... 详细信息

近年来,我国在青藏高原取得了大量地球物理资料,1980- 1982.中法合作又在西藏得到丰富的深部地球物理资料。青藏高原是一个整体。它的构造活动可以分为南、北、中三个带。中部是整体隆升,且已达到均衡。南北两缘受到强烈挤压、叠覆,是差异隆升,但未达到均衡。它的构造作用形式,可以分为上、中、下三层。上层(上地壳)以叠覆为主,中层(下地壳)以挤压为主,下层(异常地幔)以隆升为主。在上下地壳之间有一壳内低速低阻层,是一个主要的滑曳面。它的地质历史发展可以分为两个阶段。印度板块与西藏板块未碰撞前,异常地幔使高原缓慢隆升。在碰撞后,地壳加厚,重力均衡使高原快速隆升。

关键词：地球物理地球科学青藏高原青藏现代强烈隆起区隆升低速低阻层喜马拉雅地区印度板块印度-澳大利亚板块叠覆地壳地球外壳地球内部藏北地区西藏构造层重力均衡航磁异常

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喀纳斯湖硅藻的中国新记录种及现生种属调查

水生生物学报 2018年第3期42卷 641-654页

作者：林雪如 Patrick Rioual 白志娟彭卫孙明杰黄小忠兰州大学资源环境学院西部环境教育部重点实验室兰州730000 中国科学院地质与地球物理研究所新生代地质与环境研究室北京100029

为了解喀纳斯湖硅藻群落分布生态状况及多样性,对喀纳斯湖表层沉积物及水体中的硅藻进行了调查。共鉴定硅藻46属12.种[1]。其中13种为中国新记录种,分别为:模糊双眉藻Amphora indistincta Levkov,忽视双眉藻密纹变型*** *** Foged,埃德... 详细信息

为了解喀纳斯湖硅藻群落分布生态状况及多样性,对喀纳斯湖表层沉积物及水体中的硅藻进行了调查。共鉴定硅藻46属12.种[1]。其中13种为中国新记录种,分别为:模糊双眉藻Amphora indistincta Levkov,忽视双眉藻密纹变型*** *** Foged,埃德伦星杆藻Asterionella edlundii Stoermer&Pappas,星纹星盘藻Discostella stelligeroides(Hustedt)Houk&Klee,钝脆杆藻贝加尔近披针形变型Fragilaria capucina ***-baikali Flower&Williams,马卡洛娃异极藻Gomphonema makarovae Lange-Bertalot,吉奥蹄形藻Hippodonta geocollegarum Lange-Bertalot,Metzeltin&Witkowski,拟长喙蹄形藻*** Metzeltin Kulikovskiy&Lange-Bertalot,麦特廷菱形藻Nitzschia metzeltinii Lange-Bertalot,机遇盘状藻Placoneis opportuna(Hustedt)Chudaev&Gololobova,拟杆状鞍型藻Sellaphora pseudobacillum(Grunow)Lange-Bertalot&Metzeltin,马迪达鞍形藻***(Kociolek)Wetzel,斯维律十字形藻Staurosira *** Chudaev&Gololobova.文章对此13种中国新记录种硅藻进行了详细的形态特征描述。

关键词：喀纳斯湖硅藻分类学新记录种

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The Present Three Dimensional Images of the Earth's Mantle

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The Present Three Dimensional Images of the Earth's Mantle

中国科学院地质与地球物理研究所2.01学术年会

作者： D.Zhao Geodynamics Research Center,Ehime university,Matsuyama 790-8577,Japan,

During the last two decades,seismologists have made continuous efforts to determine the three-dimensional(3-D) seismic velocity structure of the *** order to better understand the Earth’s deep structure and dynamics,I have attempted to develop a new model of whole mantle seismic tomography with a novel approach.I adopted a grid

关键词：

Variational Data Assimilation of Land Surface Model with MODIS data

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Variational Data Assimilation of Land Surface Model with MOD...

2.10 International Conference on Remote Sensing (ICRS 2.10)

作者： Chunlei Meng Department of Urban Ecological Meteorology institute of Urban Meteorology CMA Beijing China

A variational data assimilation algorithm for assimilating land surface temperature （LST） in the Common Land Model （CoLM） is *** leaf area index （LAI） and land cover classification retrieved from MODIS are also assimilated in the *** analysis results from CoLM with the LST assimilation algorithm are well compared with MODIS and field observations at YUCHENG site within the research *** results indicate that the surface temperature assimilation method is efficient and effective when only one time observational LST data for each day is available.

关键词： variational data assimilation land surface model land surface temperature MODIS

Scientific Significance and Site-selection Researches of the First Chinese Continental Scientific Deep Drilhole

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Continental Dynamics 1998年第Z1期 3-15页

作者： XU Zhiqin, YANG Wenchai, ZHANG Zeming and YANG Tiannan institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China

１ＩｎｔｒｏｄｕｃｔｉｏｎＵｐｔｏｎｏｗｗｅｈａｖｅｎｏｔｋｎｏｗｎｉｎｄｅｔａｉｌｔｈｅＥａｒｔｈｏｎｗｈｉｃｈｗｅｈｕｍａｎｂｅｉｎｇｌｉｖｅ，ａｎｄｅｖｅｎｌｅｓａｂｏｕｔｔｈｅｄｅｅｐｉｎｔｈｅｃｒｕｓｔ．... 详细信息

１ＩｎｔｒｏｄｕｃｔｉｏｎＵｐｔｏｎｏｗｗｅｈａｖｅｎｏｔｋｎｏｗｎｉｎｄｅｔａｉｌｔｈｅＥａｒｔｈｏｎｗｈｉｃｈｗｅｈｕｍａｎｂｅｉｎｇｌｉｖｅ，ａｎｄｅｖｅｎｌｅｓａｂｏｕｔｔｈｅｄｅｅｐｉｎｔｈｅｃｒｕｓｔ．Ｈｏｗｅｖｅｒ，ｉｎｆｏｒｍａｔｉ...

关键词： continental scientific drilling site selection UHPM belt Dabie Sulu China

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中海油多分量地震处理技术的发展与应用实例

地球物理学报 2018年第3期61卷 1136-1149页

作者：李维新崔炯成武文来刘一峰夏庆龙石莹江南森黄小刚张云鹏薛东川中海油研究总院有限责任公司北京100028 中国海洋石油国际有限公司北京100027 中联煤层气有限责任公司北京100011 中国海洋石油集团有限公司北京100010 中海石油化学股份有限公司北京100010

2.世纪末中海油在南海油气勘探中成功试验了二维多分量地震技术.其后十多年,中海油进一步在不同近海油气盆地采集了三维多分量OBC地震资料.但由于针对三维转换波的处理未能形成有效的关键技术,除双检叠加利用了水压分量和陆检垂直分量外... 详细信息

2.世纪末中海油在南海油气勘探中成功试验了二维多分量地震技术.其后十多年,中海油进一步在不同近海油气盆地采集了三维多分量OBC地震资料.但由于针对三维转换波的处理未能形成有效的关键技术,除双检叠加利用了水压分量和陆检垂直分量外,大量水平分量数据未被使用.鉴于此,中海油在十二五期间开展三维多分量地震数据处理的关键技术攻关:针对弹性波场的矢量特征、转换波射线路径不对称以及双程旅行时多时间尺度等问题,成功研发了矢量化的信号处理技术、弹性波速度建模以及叠前时间偏移成像等技术;集成了相对完善的三维弹性波成像EWI软件系统;完成了多个试验区的三维四分量OBC地震转换波的处理,取得了好于以往技术的效果;建立了海上多分量OBC地震资料处理流程.但相对于成熟的纵波处理技术,海洋多分量地震处理技术仍需要不断完善与发展.

关键词：多分量转换波矢量叠前时间偏 EWI

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