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Seismic wave propagating in Kelvin-Voigt homogeneous visco-elastic media

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Science China Earth Sciences 2006年第2期49卷 147-153页

作者： YUAN Chunfang1, PENG Suping1, ZHANG Zhongjie2 & LIU Zhenkuan3.1. China University of Mining & Technology, Beijing 100083. China 2. institute of Geophysics, Chinese Academy of Sciences, Beijing 100101, China 3. exploration and Development Research institute of Daqing Oilfield, Daqing 163.12, China 1. China University of Mining & Technology Beijing 100083 China 2. institute of Geophysics Chinese Academy of Sciences Beijing 100101 China 3. exploration and Development Research institute of Daqing Oilfield Daqing 163712 China

This paper studies, under a small disturbance, the responses of seismic transient wave in the visco-elastic media and the analytic solution of the corresponding third-order partial differential equation. A plane wave solution of Kelvin-Voigt homogeneous visco-elastic third-order partial differ-ential equation with a pulse source is obtained. By the principle of pulse stacking of particle vibration, the result is extended to the solution of Kelvin-Voigt homogeneous visco-elastic third-order partial differential equation with any source. The velocities of seismic wave propagating and the attenuation of seismic wave in Kelvin-Voigt homogeneous visco-elastic media are discussed. The velocities of seismic wave propagating and the coefficient of attenuation of seismic wave in Kelvin-Voigt homogeneous visco-elastic media are derived, expressed as functions of density of the media, elastic modulus and visco-elastic coefficient. These results can be applied in inversing lithology parameters in geophysical prospecting.

关键词： Kelvin-Voigt visco-elastic velocity attenuation seismic wave.

The Geoscience Transect from Xiangshui,Jiangsu Province to Mandal,Inner Mongolia

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Acta Geologica Sinica(English Edition) 1992年第1期66卷 1-21页

作者： Ma Xingyuan Liu Changyuan Liu Guodong Jiang Minxi institute of Geology,State Seismological Bureau,Beijing geophysical exploration Pafrty,State Seismological Bureau,Zhengzhou. 2institute of Geology State Seismological Bureau Beijing. 3.0} exploration Party State Seismological Bureau Zhengzhou.

The Xiangshui to Mandal geoscience transect, which has a total length of 1,200 km, extends diagonally,from SE to NW, across the Sino-Korean plate and its ancient continental margin, passing through nine tectonicunits: the Subei-Jiaonan terrane, West Shandong block, North China rift basin, Taihang-Wutai block, Ordosblock, Hu-Bao (Hohhot-Baotou) Basin, Yinshan block and Inner Mongolian fold system. The graphic display of the transect is compiled according to the Guidelines for the Global GeoscienceTransect (GGT) Project on the basis of an integrated study of all available geological, geochemical andgeophysical data, thus bringing light to the process of cratonization of the Sino-Korean plate and its relation-ship with the transitional zone of the ancient continental margin, and the features of intraplate structures pro-duced by subsequent tectonic modifications and intraplate dynamics.

关键词： The Geoscience Transect from Xiangshui Jiangsu Province to Mandal Inner Mongolia

Primary migration and secondary alteration of the Upper Paleozoic gas reservoir in Ordos Basin,China―Application of fluid inclusion gases

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Science China Earth Sciences 2008年第S1期51卷 165-173页

作者： GONG Se 1,2 ,PENG PingAn 1 ,SHUAI YanHua 3.,DAI JinXing 3.&ZHANG WenZheng 4.1 Guangzhou institute of Geochemistry,the Chinese Academy of Sciences,Guangzhou 51064.,China 2 Common Wealth Scientific and Research Organization,Petroleum Resources,PO Box 13.,North Ryde,New South Wales,1670,Australia 3.Research institute of Petroleum exploration and Development,PetroChina,Beijing 100083.China 4.Research institute of exploration and Development,Changqing Petroleum Corporation,Xi’an 710021,China Guangzhou institute of Geochemistry the Chinese Academy of Sciences Guangzhou 510640 China Common Wealth Scientific and Research Organization Petroleum Resources PO Box 136 North Ryde New South Wales 1670 Australia Research institute

The composition of fluid inclusions(FI)often represents the initial geochemical characteristics of palaeo-fluid in reservoir *** on composition and carbon isotopic composition of gas during primary migration,reservoir-forming and subsequent secondary alterations are discussed through comparing fluid inclusion gas with coal-formed gas and natural gas in present gas reservoirs in the Ordos *** results show that primary migration of gas has significant effect on the molecular but not on the carbon isotopic composition of *** and diffusion fractionation took place during the secondary migration of gas in Upper Paleozoic gas reservoir according to carbon isotopic composition of methane in *** and carbon isotopic composition of natural gas were nearly unchanged after the gas reservoir forming through comparing the FI gases with the natural gas in present gas reservoir.

关键词： secondary alteration fluid inclusion carbon isotope Ordos Basin

Partition of Crustal Density Structure of Chinese Continent

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Continental Dynamics 1996年第2期 94-102页

作者： Yang Wencai(institute of Geology, Chinese Academy of Geological Sciences, Beijing 10003., China)Hou Zunze(institute of geophysical & {3. Eeploration, {4. 10284., China)

ＰａｒｔｉｔｉｏｎｏｆＣｒｕｓｔａｌＤｅｎｓｉｔｙＳｔｒｕｃｔｕｒｅｏｆＣｈｉｎｅｓｅＣｏｎｔｉｎｅｎｔ￥ＹａｎｇＷｅｎｃａｉ（ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＧｅｏｌｏｇｉｃａ... 详细信息

ＰａｒｔｉｔｉｏｎｏｆＣｒｕｓｔａｌＤｅｎｓｉｔｙＳｔｒｕｃｔｕｒｅｏｆＣｈｉｎｅｓｅＣｏｎｔｉｎｅｎｔ￥ＹａｎｇＷｅｎｃａｉ（ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＧｅｏｌｏｇｉｃａｌＳｃｉｅｎｃｅｓ，Ｂｅｉｊｉｎｇ...

关键词： Crustal structure density structure partition multiscale analysis gravity fields Chinese continent

Silurian granulite-facies metamorphism,and coeval magmatism and crustal growth in the Tongbai orogen,central China

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Silurian granulite-facies metamorphism,and coeval magmatism ...

Mn content of reservoir calcite cement: A novel inorganic geotracer of secondary petroleum migration in the tectonically complex Junggar Basin (NW China)

中国矿物岩石地球化学学会第13.学术年会

作者： WANG Hao~1,WU Yuan-bao~(1,2),GAO Shan~1,ZHANG Hong-fei~1, LIU Xiao-chi~1,GONG Hu-jun~2,PENG Min~3.WANG Jing~4.YUAN Hong-lin~2 1.State Key Laboratory of Geological Processes and Mineral Resources,Faculty of Earth Sciences,China University of Geosciences, Wuhan 4.0074.China 2.State Key Laboratory of Continental Dynamics,Department of Geology,Northwest University,Xi’an 710069,China 3.{3. of geophysical and geochemical {3. CAGS,{4. 065000,China 4.Anhui {3. of Geology,Hefei 23.001,China

It is intriguing whether the formation of granulite in an orogenic belt is related to magmatism and crustal *** Tongbai orogen is one of the particular areas in the Qinling-Tongbai-Dabie-Sulu orogen that contains both granulites and associated arc magmatic rocks,and thus is an optimal place to address this ***,the formation age and genesis of the granulites and their relations to the magmatic rocks have not yet been well *** situ LA(MC)-ICPMS U-Pb dating,and trace element and Lu-Hf isotope analyses were undertaken on zircon grains from gneiss,granulite,gabbro and granodiorite *** zircons in three granulite samples and a gneiss sample have core-rim *** cores have oval or rounded shapes,oscillatory zones,high Th/U ratios and variable U-Pb ages,suggesting a detrital *** youngest group of the detrital zircons yields a weighted mean pb/U age of(4.0-±5) Ma,which is interpreted as the maximum depositional age of their protoliths.A major age cluster is ca.4.0～4.0 Ma,corresponding to prolonged arc magmatism in the northern Tongbai and Qinling *** group of ages range from 660 to 950 Ma,implying that the Qinling Group

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Science China Earth Sciences 2007年第12期50卷 1796-1809页

作者： CAO Jian1,HU WenXuan1,YAO SuPing1,ZHANG YiJie2,WANG XuLong3.ZHANG YueQian3.TANG Yong3.& SHI XinPu3.1 State Key Laboratory for Mineral Deposit Research,Department of Earth Sciences,Nanjing University,Nanjing 210093.China 2 Research institute of exploration and Development,PetroChina,Beijing 100083.China 3.Research institute of exploration and Development,PetroChina Xinjiang Oilfield Company,Karamay 83.4}00,China 1. State Key Laboratory for Mineral Deposit Research Department of Earth Sciences Nanjing University Nanjing 210093 China 2. Research institute of exploration and Development PetroChina Beijing 100083 China 3. Research institute of exploration and Development PetroChina Xinjiang Oilfield Company Karamay 834000 China

Electronic probe microanalysis(EPMA) results of reservoir calcite cement from fourteen core samples in the Junggar Basin show that Mn-content varies largely between different samples from below the detect limitation to 4.14.,while it displays a generally good correlation with oil-gas ***,therefore,likely indicates that concentration of the Mn-content of the calcite cement has a close rela-tion to the intensity of petroleum fluid charging during hydrocarbon secondary *** order to assess this hypothesis,oxygen and strontium isotopic measurements on sixteen calcite veins host in source sequences were carried out to investigate the feature of the oil-source petroleum *** results imply that during hydrocarbon generation and migration,deep hot fluid has dissolved volcanic minerals interlined between mudstone source *** Mn is a kind of typical trace element enriched in volcanic rocks,it is reasonable to conclude that the petroleum fluid formed in the source sequences would be ***,calcite cements precipitated from such Mn-rich petroleum fluid would be Mn-rich *** to the geologic chromatographic effect during migration along reservoir rocks,the decreasing of the Mn-content of the reservoir calcite cements indicates the migration ***,this novel geotracer was further successfully applied in the study of hydrocarbon migration in the Junggar Basin in combination with organic geochemical analyses during the hydrocarbon *** Mn content of the reservoir calcite cement appears promising as a novel inorganic geotracer for the petroleum *** paper represents a search for novel indicators of secondary petroleum migration in tectonically complex basins based on fundamentals of the reservoir fluid-rock interactions.

关键词： Petroleum migration, inorganic geochemistry, water-rock interaction, reservoir calcite cement, the Junggar Basin

DISCUSSION ON TANCHENG—LUJIANG Y—SHAPE TRIPLE RIFT

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DISCUSSION ON TANCHENG—LUJIANG Y—SHAPE TRIPLE RIFT

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

Beijing(89) International Symposium on exploration Geophysics

作者： Wang,Jinxing Shi,Xiuqin geophysical and geochemical exploration Party,Hangzhuo

＜正＞This is a new attempt in geological research to use the geophysical data to study the continental rift. Analysis of the characteristics of stress field of mantle flux shows that the upflow of mantle flux is the driving force of genesis and development of the continental *** geophysical fields of the rift is approximately characterized by“three lows and one high”,*** low,magnetic low,apparent resistivity low and geothermal high.

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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, H3.3.7, 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.

Sequence stratigraphic framework and distribution of depositional systems for the Paleogene in Liaodong Bay area

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Science China Earth Sciences 2008年第S2期51卷 1-10页

作者： ZHU XiaoMin1,DONG YanLei1,YANG JunSheng1,ZHANG Qin1,LI DeJiang2,XU ChangGui3.& YU Shui3.1 National Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum,Beijing 10224.,China 2 Research institute of Petroleum exploration and Development——{3.,PetroChina,{3. 065007,China 3.Technology Department of CNOOC Tianjin Company,Tianjin 3.04.2,China China Univ Petr Natl Key Lab Petr Resources & Prospecting Beijing 102249 Peoples R China PetroChina Res Inst Petr Explorat & Dev Langfang Langfang 065007 Peoples R China CNOOC Tianjin Co Dept Technol Tianjin 300452 Peoples R China

With a comprehensive geological and geophysical data base,the Paleogene in the Liaodong Bay area,which consists of the Kongdian,Shahejie and Donghying Formations from the base to top,was divided into 4.second-order sequences and 8 third-order sequences based on the characteristics of the se-quence boundaries. Each third-order sequence is subdivided into the lowstand,lake transgressive and highstand systems tracts. The Lowstand systems tract (LST) is mainly composed of progradational parasequence sets,while the lake transgressive systems tract (TST) largely consists of the retrograda-tional parasequence sets and the highstand systems tract (HST) is dominated by the progradational parasequence sets. The main types of depositional systems include the shallow lake,semi-deep lake,deep lake,delta,fan delta,braided fluvial delta and nearshore subaqueous fan. The braided fluvial delta and fan delta depositional systems are mainly confined to the sequences of the lower SEs4.Ek,SEs3.and SEs1+2,while the sequences of SEd3.SEd2 and SEd1 are dominated by the delta and nearshore subaqueous fan depositional systems with the latter being developed at the downthrown side of the basin-bounding fault in each sequence. The evolution of the depositional systems is always con-trolled by the paleo-tectonic setting and the ancient landform in the space and geological time. It is concluded that the most favorable reservoirs are distributed in the Liaoxi low uplift and the central Liaozhong sag.

关键词： Liaodong Bay area Paleogene sequence stratigraphy sequence boundary depositional system