检索结果-南通市图书馆

Hydrocarbon accumulation in network and its application in the continental rift basin

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science china Earth sciences 2008年第S2期51卷 88-100页

作者： PANG XiongQi1,2,CHEN DongXia1,ZHANG ShanWen3,HAO Fang1,LIU Zheng1,LIU keyu3,SONG GuoQi4,WANG YongShi4,LUO XiaoRong5 & WU XiaoChun61 State key Laboratory of Petroleum Resource and Prospecting,chinese University of Petroleum,beijing 102249,china 2 Basin and Reservoir Center,chinese University of Petroleum,beijing 102249,china 3 SINOPEC Shengli Oilfield,Dongying 257051,china 4 CSIRO Petroleum,P. O. Box 1130,Bentley,WA 6102,Australia 5 institute of geology and geophysics,chinese academy of Science,{12.,china 6 china National Petroleum Corporation,beijing 100724,china State key Laboratory of Petroleum Resource and Prospecting Chinese University of Petroleum Beijing China Basin and Reservoir Center Chinese University of Petroleum Beijing China SINOPEC Shengli Oilfield Dongying China CSIRO Petroleum Bentley Australia institute of geology and geophysics Chinese Academy of Science Beijing China china National Petroleum Corporation Beijing China

The concept of hydrocarbon accumulation in network was presented on basis of the overall analysis of the formation and evolution characteristics of the continental faulted basin and of the systemic re-search on the major controlling factors on the hydrocarbon accumulation. The hydrocarbon accumu-lation in network can be defined as hydrocarbon accumulation in a three-dimensional network system which is constituted by the hydrocarbon migration passages under multiple dynamics,following the hydrocarbon generation from source rocks. The research shows that the hydrocarbon accumulation in network is composed of four elements,i.e.,hydrocarbon source (source rock kitchen),hydrocarbon accumulation terminal (trap),network pathway connecting source and terminal (transporting system),and network potential driving hydrocarbon migration in the network pathway (migration dynamics). Compared with other networks,hydrocarbon accumulation in network has three basic characteristics: the irreversible geological process of material and information flow in the network; the loss of material and information in the flow process in the network; the multiple dynamics in the flow process. Interac-tion of all the elements in the geological process can be called hydrocarbon accumulation in network. There are three basic models for hydrocarbon accumulation in network,that is,hydrocarbon accumu-lation in the network source area,hydrocarbon accumulation in the network pathway,and hydrocarbon accumulation in the network terminal. The key in the application of the hydrocarbon accumulation models in network in practice is to confirm the major accumulation stage and the function range of the four elements controlling the hydrocarbon firstly,to predict the profitable accumulation region by su-perposition of the favorable areas confirmed by four elements consequently,and to evaluate the oil-bearing property of the trap as well as confirm drilling targets. This paper takes the Dongying De-pression in the

关键词： continental rift basin hydrocarbon accumulation theory hydrocarbon network hydrocarbon accumulation in network Bohai Bay Basin

Moment tensor analysis of the acoustic emission source in the rock damage process

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2005年第7期15卷 609-613页

作者： YU Huaizhong, ZHU Qingyong, YIN Xiangchu and WANG Yucang ( State key Laboratory of Earthquake Dynamics, institute of geology, china Earthquake Administration, beijing 10002., china State key Laboratory of Nonlinear Mechanics, institute of Mechanics, chinese academy of sciences, beijing 100080, china School of Mathematics and Computational Science, Zhongshan University, Guangzhou 510275, china Center for Analysis and Prediction, china Seismological Bureau, beijing 100036, china Quakes, Department of Earth Science, University of Queensland, Brishbane, Austrialia) State key Laboratory of Earthquake Dynamics Institute of Geology China Earthquake Administration Beijing 100029 China. State key Laboratory of Nonlinear Mechanics Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China. School of Mathematics and Computational Science Zhongshan University Guangzhou 510275 China. Center for Analysis and Prediction China Seismological Bureau Beijing 100036 China. Quakes Department of Earth Science University of Queensland Brishbane Austrialia

To further investigate the mechanism of acoustic emission (AE) in the rock fracture experiment, moment tensor analysis was carried out. The AE sources characterized by crack sizes, orientations and fracture modes, are represented by a time-dependent moment tensor. Since the waveforms recorded by AE monitors correlate to the moment tensors, we prefer to select the P wave amplitude from the full-space Green's function of homogeneous and isotropic materials to determine the six independent components of the moment tensor. The moment tensor analysis was used to investigate the AE sources recorded in the experiment, and three types of micro-cracks were found, which are tensile mode, shear mode and mixture of the tensile and shear mode. In addition, the motion of micro-cracks was decided by eigenvectors of moment tensor. Results indicate that the moment tensor analysis may be used as a measurement to reflect the damage evolution of rock specimen.

关键词： moment tensor acoustic emission rock fracture.

Research on the dynamics of the South china Sea opening:Evidence from analogue modeling

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science china Earth sciences 2006年第10期49卷 1053-1069页

作者： SUN Zhen1,2, ZHOU Di1, ZHONG Zhihong3, XIA Bin2, QIU Xuelin1, ZENG Zuoxun4 & JIANG Jianqun5 1. CAS key Laboratory of Marginal Sea geology, South china Sea institute of Oceanology, chinese academy of sciences, Guangzhou 510301, china 2. CAS key Laboratory of Marginal Sea geology, Guangzhou institute of Geochemistry, chinese academy of sciences, Guangzhou 510640, china 3. Department of Technology, Shenzhen Branch of CNOOC, Guangzhou 510240, china 4. Faculty of Earth {12., china University of Geo{12., Wuhan 430074, china 5. Hainan Oil & Gas Exploration Company, Liaohe Oilfield Petrochina, Panjin 12.010, china CAS key Laboratory of Marginal Sea geology South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou China CAS key Laboratory of Marginal Sea geology Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou China Department of Technology Shenzhen Branch of CNOOC Guangzhou China Faculty of Earth sciences China University of Geosciences Wuhan China Hainan Oil & Gas Exploration Company Liaohe Oilfield PetroChina Panjin China

Independent of Indochina extrusion, the South china Sea experienced a process from passive continental rifting to marginal sea drifting. According to the fault patterns in the Beibu Gulf basin and the Pearl River Mouth basin, the continental rifting and early spreading stage from 32 to 26 Ma were controlled by extensional stress field, which shifted clockwise from southeastward to south southeastward. From 24 Ma on, the sea spread in NW-SE direction and ceased spreading at around 15.5 Ma. Integrated geological information with the assumption that the South china Sea developed along a pre-cenozoic weakness zone, we did analogue experiments on the South china Sea evolu- tion. Experiments revealed that the pre-existing weakness zone goes roughly along the uplift zone between the present Zhu-1 and Zhu-2 depression. The pre-existing weakness zone is composed of three segments trending NNE, roughly EW and NEE, respectively. The early opening of the South china Sea is accompanied with roughly 15° clockwise rotation, while the SE sub-sea basin opened with SE extension. Tinjar fault was the western boundary of the Nansha block (Dangerous Ground), while Lupar fault was the eastern boundary of the Indochina, NW-trending rift belt known as Zengmu basin developed between above two faults due to block divergent of Indochina from Nansha. In the experiment, transtensional flower structures along NW-trending faults are seen, and slight inversion occurs along some NE-dipping faults. The existence of rigid massifs changed the orientations of some faults and rift belt, and also led to deformation concentrate around the massifs. The rifting and drifting of the South china Sea might be caused by slab pull from the proto South china Sea subducting toward Borneo and/or mantle flow caused by India-Asia collision.

关键词： South china Sea, rifting and drifting, clockwise rotation, analogue modeling, rigid massifs.

A kind of coccoid dinoflagel-lates-like fossils gives a new explanation of source of dinosterane in the Early-Middle Cambrian

在线全文

学校读者我要写书评

暂无评论

chinese Science Bulletin 2001年第5期46卷 420-423,442页

作者： BIAN Lizeng, ZHANG Shuichang, ZHANG Baomin, MAO Shaozhi & YIN LeimingDepartment of Earth sciences, Nanjing University, Nanjing 210093,china key Laboratory of Petroleum Geochemistry, china National Petroleum Corporation, beijing 100083, china Research institute of Petroleum Exploration and Development, china National Petroleum Corporation, beijing 100083, china china University of Geosciences, beijing 100083, china Nanjing institute of geology and Palaeontology, chinese academy of sciences, Nanjing 210008, china Department of Earth sciences Nanjing University Nanjing China key Laboratory of Petroleum Geochemistry China National Petroleum Corporation Beijing China Research institute of Petroleum Exploration and Development China National Petroleum Corporation Beijing China china University of Geosciences Beijing China Nanjing institute of geology and Palaeontology Chinese Academy of Sciences Nanjing China

The coccoid fossils covered with thick gelatinous envelop containing several gametes are discovered in gyps and salt deposits of Cambrian, H4 well and chert bed of the base of Yuertus Formation (∈11) of Xiaoerbulake Section. The fossils are described and compared with coccoid dinoflagellates. These fossils may be a coccoid life-cycle stage (vegetative cyst) of coccoid dinoflagellates. If this identification is correct, the coccoid dinoflagellates-like fossils could give a reasonable explanation of the dinoflagellate-specific biomarkers from Cambrian, H4 well, Tarim Basin.

关键词： coccoid dinoflagellates-like fossils dinoflagellate-specific biomarkers Cambrian Tarim Basin.

Ultramafic xenoliths in Mesozoic diorite in west Shandong Province

在线全文

学校读者我要写书评

暂无评论

Science china Earth sciences 2004年第6期47卷 489-499页

作者： CHEN Lihui1,2 & ZHOU Xinhua2 1.The key Laboratory of Orogenic Belts and Crustal Evolution,Ministry of Education,china and School of Earth and Space sciences,Peking University,beijing 100871,china 2.institute of geology and geophysics,chinese academy of sciences,beijing 10002.,china Correspondence should be addressed to Chen Lihui(email: lihui_chen@***) The key Laboratory of Orogenic Belts and Crustal Evolution Ministry of Education China and School of Earth and Space Science Peking University Beijing China institute of geology and geophysics Chinese Academy of Sciences Beijing China

Ultramafic xenoliths are common in Tietonggou intrusion, Laiwu, Shandong Prov-ince. Peridotite xenoliths develop two-stage metasomatism popularly: (i) The early metasoma-tism is characterized by intergranular clinopyroxene and phlogopite; (ii) The later metasomatism is characterized by orthopyroxene veins with a few plagioclases and amphiboles. These ul-tramafic xenoliths are thought to be mostly from the crust-mantle transitional zone on the basis of their combination, mineral chemistry, equilibrium temperature, and metasomatic characteristics. Major elements, rare earth elements, and Sr-Nd isotopic composition of the ultramafic xenoliths indicate that there is a petrogenetic relationship between the silica-enriched xenoliths and their host diorites. We propose that such silica enrichment might be an indicator of melt-rock interac-tions in the Mesozoic lithosphere beneath western Shandong.

关键词： ultramafic xenoliths, crust-mantle transitional zone,metasomatism, Tietonggou intrusion, Laiwu.

Decadal-scale variability of warm season temperature in beijing over the past 2650 years

在线全文

学校读者我要写书评

暂无评论

Decadal-scale variability of warm season temperature in Beij...

Evidence for enhanced aridity in the Tarim Basin of china since 5.3 Ma

中国科学院地质与地球物理研究所第11届（2011年度）学术年会

作者： DAI Ying~(1,2*),ZHANG Yan~(1,2) & GE JunYi~1 1 key Laboratory of cenozoic geology and environment,institute of geology and geophysics,chinese academy of sciences,beijing 10002., china 2 Graduate University of chinese academy of sciences,beijing 100049,china

A continuous record of surface temperature for the past 2650 years was obtained in an earlier study from a beijing stalagmite based on sedimentary layer counting and thickness *** spectrum analysis,multi-taper and wavelet spectral analyses are used in this study to identify decadal-scale signals and their origins in this *** long-term cycles of solar origin identified in earlier studies,this record contains cycles that dominate temperature with periods of 102-70,66-50,31,25-22, 19,15,12.and 9 *** 102-70,25-22,12.and 9 year cycles are attributable to solar variation,while the others are likely to be related to low-latitude ocean *** results suggest that century-scale changes in the beijing summer temperature over the past 2650 years are primarily controlled by solar variation,while ocean-atmospheric interactions play a prominent role in modulating decadal-scale variability.

关键词： stalagmite singular spectrum analysis(SSA) decadal climate cycles warm season temperature

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Evidence for enhanced aridity in the Tarim Basin of China si...

A Study of Sr, Nd and O Isotopes of the K-rich Melanocratic Dykes in the Late Mesozoic Gold Field in the Jiaodong Peninsula

中国科学院地质与地球物理研究所2008学术年会

作者： Jimin Sun~*,Liyuan Zhang,Chenglong Deng,Rixiang Zhu key Laboratory of cenozoic geology and environment,institute of geology and geophysics,chinese academy of sciences,P.O.Box 9825, beijing 10002.,china

Thick cenozoic deposits formed from the erosion of the northern evolving edge of the Tibetan Plateau provide opportunities to study the exhumation history and climatic changes within the *** deposits are important because they are located in an actively deforming mountain belt as well as in a rain shadow of the Tibetan ***-proxy studies indicate that hyperarid climate has prevailed since 5.3 Ma ago within the *** information,together with the geometry analysis of syntectonic deposits of the Sanju Anticline,which indicate tectonic deformation at 5.3 Ma,enable us to better understand the interlay between climatic changes and tectonic *** results suggest that the tectonic uplift of the Kunlun Mountains at 5.3 Ma must have been one of the significant regional tectonic events,and the uplifted elevation of the Kunlun Mountains more effectively blocks the penetration of moisture from the Indian monsoon into the Tarim Basin and thus enhances the rain shadow *** can account for the increasing aridity as well as the formation of the world’s second largest active sand desert(the Taklimakan Desert) in the Tarim Basin initiated at 5.3 Ma ago.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2001年第4期75卷 432-444页

作者： SUN Jinggui, HU Shouxi, LIU Jianmin, SHEN Kun and LING Hongfei Earth Science institute, Jilin University, Changchun 130062 State key Laboratory of Research on Metallogenesis of Endogenic Ore Deposits,Nanjing University, Nanjing 210093 institute of geology and geophysics, chinese academy of sciences, beijing 100101 Shandong institute and Laboratory of Geological sciences, Jinan 250013 Jilin Univ Inst Earth Sci Changchun 130062 Peoples R China Nanjing Univ State Key Lab Res Metallogenesis Endogen Ore Depo Nanjing 210093 Peoples R China chinese Acad Sci Inst Geol & Geophys Beijing 100101 Peoples R China Shandong Inst Jinan 250013 Peoples R China Lab Geol Sci Jinan 250013 Peoples R China

Geologic, petrographic and petrochemical studies of the late Mesozoic K-rich melanocratic dykes, including lamprophyres, andesite porphyrites and dacite-porphyry in the gold field system in the Jiaodong Peninsula, china, have shown that these dykes are characterized by rich potassium and alkali but poor titanium. They belong to an ultra-high potassic, shoshonitic and high potassic calc-alkaline rock series. The parental magma has relatively high initial strontium ratios ((87Sr/86Sr),=0.70895-0.71140) and low (143Nd/144Nd)1 ratios (varying from 0.51135 to 0.512.1); and its δ18Osmow, whole rock values vary from +5.8%c to +10.6%c with a mean of +7.1%c. These features suggest that the source region of the magma is an enriched mantle wedge transformed from a continental lithosphere mantle which has experienced metasomatism by mantle-derived fluids with H2O-dominated fluids that were provided during the underthrusting of an ocean crust. The initial magma was generated by low-degree partial melting of the enriched mantle in its mature stage in the back-arc spreading environment. The evolution of magmas is associated with two trends, i.e., fractional crystallization and mixing with or intensive contamination by palaeo-crust materials or metamorphic rocks. The former process is evident in the gold field system of quartz-vein type, whereas the latter is dominated in the gold field system of the altered-rock type. This conclusion is very important for more detailed study of petrogenesis and mineralization through the crust-mantle interaction (exchange) in the Mesozoic in this region.

关键词： late Mesozoic K-rich melanocratic dykes Sr Nd and O isotope geochemistry gold field system in the Jiaodong Peninsula

Insights into correlation between satellite infrared information and fault activities

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2006年第4期16卷 394-402页

作者： MA Jin, WANG Yipeng, CHEN Shunyun, LIU Peixun and LIU Liqiang State key Laboratory of Earthquake Dynamics, institute of geology, china Earthquake Administration, beijing 10002., china State key Laboratory of Earthquake Dynamics Institute of Geology China Earthquake Administration Beijing 100029 China

Tectonic activities are accompanied with material movement and energy transfer, which definitely change the state of thermal radiation on the ground. Thus it is possible to infer present-day tectonic activities based on variations of the thermal radiation state on the ground. The received satellite infrared information is, however, likely influenced by many kinds of factors. Therefore, the first problem that needs to be solved is to extract information on tectonic activities and eliminate effects of external (non-tectonic) factors. In this study, we firstly make a review of the current studies on this subject, and then present the technical approach and our research goal. Using the data of 20 years from the infrared band of the satellite of National Oceanic and Atmospheric Administration (NOAA) and the method we have developed, we investigate fault activities in western china. The results show that the areas with high residual values of land surface brightness temperature (LSBT), which is presumably related to faultings in space, accord usually with the locations of followed major earthquakes. The times of their value growing are also roughly consistent with the beginning of active periods of earthquakes. The low frequency component fields of the LSBT, acquired from wavelet analysis, exhibit well the spatial distributions of active faults. The "heat penetrability index" (HPI) related with enhancement of subsurface thermal information has been expressed well for the backgrounds of accelerated tectonic motions, and some correlations exist between HPI and the local faulting and seismicity. This study provides a new approach to study temporal-spatial evolution of recent activities of faults and their interactions.

关键词： infrared emission fault activity residual of land surface brightness temperature heat penetrability index.