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

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 113.,Bentley,WA 6102,Australia 5 Institute of Geology and Geophysics,Chinese Academy of Science,Beijing 100029,china 6 china National Petroleum Corporation,Beijing 100724,china Chinese Univ Petr State Key Lab Petr Resource & Prospecting Beijing 102249 Peoples R China Chinese Univ Petr Basin & Reservoir Ctr Beijing 102249 Peoples R China SINOPEC Shengli Oilfield Dongying 257051 Peoples R China CSIRO Petr Bentley WA 6102 Australia Chinese Acad Sci Inst Geol & Geophys Beijing 100029 Peoples R China china Natl Petr Corp Beijing 100724 Peoples R 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

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

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

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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 {3. of geological Processes and mineral resources,faculty of earth sciences,china university of geosciences,{13.,china 2.state key {3. of Continental Dynamics,Department of Geology,Northwest university,Xi’an 710069,china 3.Institute of Geophysical and Geochemical Exploration CAGS,Langfang 065000,china 4.Anhui Institute 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(450-±5) Ma,which is interpreted as the maximum depositional age of their protoliths.A major age cluster is ca.450～490 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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New paleomagnetic results from the Yangzhuang Formation of the Jixian System, North china, and tectonic implications

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Science Bulletin 2005年第14期 77-83页

作者： wu Huaichun1, ZHANG Shihong1, LI Zheng-Xiang2, LI Haiyan1 & DONG Jin1 1. state key {3. of geological Processes and mineral resources & key {3. of Lithosphere Tectonics and Lithoprobing Technology of Ministry of Education, china university of Geosci- ences, Beijing 100083. china 2. Tectonics Special Research Centre, School of earth and Geographical {13., The university of Western Australia, Crawley, WA 6009, Australia

A paleomagnetic study was carried out on the Yangzhuang Formation （13.0 Ma） of the Jixian System in the North china Block （NCB）. Detailed stepwise thermal demagnetization isolated two components. The soft compo- nent （component A） was interpreted as a remagnetization in the recent geomagnetic field. The hard component （compo- nent B） with higher unblocking-temperatures was carried by hematite. Its site-mean direction is D/I = 77.6°/-24.3. （κ = 5.4, α95 = 18.3., N = 15 sites） before, and D/I = 72.2°/11.5° （κ = 24.6, α95 = 7.9°） after tilt correction. It passes a fold test （Mesozoic folding） at 99% confidence level and reversal test at 95% confidence level. The corresponding pole locates at 17.3.N, 214.5°E （dp = 4.1°, dm = 8.0°）. A best fit of paleo- magnetic poles from the NCB, Baltica, Siberia and the ap- parent polar wander path for Laurentia suggests a long-lived connection between these paleo-continents between1800 and 13.0 Ma.

关键词： North china Block Yangzhuang Formation paleomag- netism Mesoproterozoic Rodinia Columbia.

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Structural and Chemical Characterization of the Ediacaran Embryo-Like Fossils via the Combination of 3.-XRM and FIB-SEM Approaches

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Journal of earth Science 2024年第4期35卷 1204-1214页

作者： Qian Chen Weichen Sun Suping wu Zongjun Yin state key laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing210008China university of Chinese Academy of sciences Nanjing211135China

The three-dimensional(3.)morphology,anatomy,and in-situ chemical composition analysis of fossils are crucial for systematic paleontology and determining their phylogenetic *** electron microscopy(SEM)coupled with energy-dispersive X-ray spectroscopy(EDS),offers valuable structural and chemical information for the analysis of ***,its primary limitation is the restriction to two-dimensional surface data,which limits the exploration of fossils’3. ***,3. X-ray microscopy(3.-XRM),also known as a novel form of micro-computed tomography(micro-CT)facilitates the non-destructive 3. reconstruction of fossil ***,it lacks the capability to provide in-situ compositional *** the constraints inherent in these individual techniques,and in response to the evolving requirements of paleontological research,this study introduces an integrated approach that combines 3.-XRM with EDS-coupled focused ion beam scanning electron microscopy(FIB-SEM).This innovative strategy is designed to synergize the advantages of both techniques,thereby addressing challenges that conventional methods *** enables the rapid identification of regions of interest(ROI)within fossil specimens at micrometer ***,this method collects detailed data on both 3. structures and chemical compositions at the nanometer scale for the identified *** integrated approach represents a significant advancement in paleontological and geological research methodologies,promising to meet the increasing demands of these fields.

关键词： Embryo-like microfossils structural and chemical characterization 3.-XRM FIB-SEM 3. reconstruction

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Triassic integrative stratigraphy,biotas,and paleogeographical evolution of the Qinghai-Tibetan Plateau and its surrounding areas

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Science china earth sciences 2024年第4期67卷 1152-1194页

作者： Guichun wu Zhansheng JI Gary GLASH Qinggao ZENG Jianxin YAO key laboratory of Stratigraphy and Palaeontology Ministry of Natural ResourcesInstitute of GeologyChinese Academy of Geological SciencesBeijing 100037China SinoProbe laboratory Chinese Academy of Geological SciencesBeijing 100094China Department of Geology and Environmental sciences State University of New York-FredoniaFredoniaNY 14063USA Xizang Autonomous Region geological and mineral Exploration and Development Burea Lhasa 850010China

Rocks of the Qinghai-Tibetan Plateau(QTP)host abundant Triassic *** far,the well established marine fossil sequences based on ammonoids,conodonts,bivalves,brachiopods,radiolarians,and terrestrial spora-pollen sequence have become standard for biostratigraphic correlation of the *** much of Triassic time,the QTP occupied a marine setting as suggested by the dominance of marine *** main sedimentary types represented in the Triassic successions include littoral to shallow marine clastic rocks,shallow marine carbonate platform carbonates,bathyal to abyssal slope carbonates intercalated with clastic and siliceous deposits,coal-bearing clastic strata contained within paralic facies deposits,and littoral and terrestrial volcaniclastic *** deposits are organized into four stages in ascending order:(1)Early Triassic deposits that record marine transgression,including extensive shallow marine carbonate platform strata.(2)Middle Triassic Ladinian to Late Triassic Carnian deposits,including thin-bedded limestone,fine clastics,and siliceous rocks,that accumulated at greater depths than underlying Early Triassic strata and reflect the peak of the *** activity appears to have occurred in some areas during this stage.(3.Late Triassic Norian deposits that record the onset of marine regression as suggested by the widespread occurrence of platform *** is noteworthy that stage 3.deposits of the Qin-Qi-Kun area in the northernmost region of the QPT is dominated by terrestrial strata and displays evidence of local erosion.(4)Late Triassic Rhaetian littoral and shallow marine clastic and coal-bearing deposits that preserve the record of continued marine regression *** Indus-Yarlungzangbo Suture Zone(IYSZ)appears to have been the rifting axis during Triassic time as suggested by sedimentary facies trends that reflect deepening to south and ***,the Himalaya Block to the south of the IYSZ was part of the passive margin

关键词： Qinghai-Tibetan Plateau Triassic Biostratigraphy Lithostratigraphy Palaeobiogeography Sedimentary palaeogeography

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Late Mesozoic Exhumation of the Huangling Massif:Constraints on the Evolution of the Middle Yangtze River

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Acta Geologica Sinica(English Edition) 2024年第1期98卷 250-264页

作者： SU Jianchao LIN Xu LI Chang’an Jolivet MARC wu Lin CHENG Feng DENG Bin wu Zhonghai CHEN Xiaokang HU Chengwei School of Geography and Information Engineering China University of GeosciencesWuhan 430074China College of Civil Engineering and Architecture China Three Gorges UniversityYichangHubei 443002China Géosciences Rennes CNRS-UMR6118Univ RennesRennesFrance state key laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBejing 100029China key laboratory of Orogenic Belts and Crustal Evolution Ministry of EducationSchool of Earth and Space SciencesPeking UniversityBeijing 100871China state key laboratory of Oil and Gas Reservoir Geology and Exploitation/Chengdu {3. of Technology Chengdu 100871China Institute of geological Mechanics Chinese Academy of Geological ScienceBeijing 100081China

Plate subduction leads to complex exhumation processes on *** Huangling Massif lies at the northern margin of the South china *** the Huangling Massif was exhumed as a watershed of the middle reaches of the Paleo-Yangtze River during the Mesozoic remains under *** examined the exhumation history of the Huangling Massif based on six granite bedrock samples,using apatite fission track(AFT)and apatite and zircon(U-Th)/He(AHe and ZHe)*** samples yielded ages of 157–13. Ma(ZHe),119–106 Ma(AFT),and 114–72 Ma(AHe),*** modeling revealed that three phases of rapid cooling occurred during the Late Jurassic–Early Cretaceous,late Early Cretaceous,and Late *** exhumation processes led to the high topographic relief responsible for the emergence of the Huangling *** integrated of our new data with published sedimentological records suggests that the Huangling Massif might have been the watershed of the middle reaches of the Paleo-Yangtze River since the *** that time,the rivers flowed westward into the Sichuan Basin and eastward into the Jianghan *** subduction of the Pacific Plate beneath the Asian continent in the Mesozoic deeply influenced the geomorphic evolution of the South china Block.

关键词： apatite zircon (U-Th)/He fission track Huangling Massif Yangtze River

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Visible and near infrared reflectance spectroscopy for measuring soil heavy metal content as a quick method

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Acta Geochimica 2006年第S1期 225-226页

作者： Yunzhao wu1, Jun CHEN2, Junfeng JI2, Peng GONG1, Qilin LIAO3. Hongrui MA2 1 state key Lab of Remote Sensing Science, Institute of Remote Sensing Applications, Chinese Academy of {3., Beijing 100101, china 2 Department of earth Science, Nanjing university, Nanjing 210093. china 3.geological Survey of Jiangsu Province, Nanjing 210093. china

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Structural Stability of Natural Magnesiochromite at High-Temperature-Pressure Conditions

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Journal of earth Science 2024年第4期35卷 1196-1203页

作者： Shuyu Jin Xiang wu Yungui Liu Yanfei Zhang Chao Wang state key laboratory of {3. Processes and mineral resources China University of GeosciencesWuhan430074China College of Gems and Materials Hebei GEO UniversityShijiazhuang050031China

The podiform chromitites in the Luobusha ophiolite have been thought to experience a very deep formation,but the maximum depth is still an open ***,we have investigated the structural stability of natural magnesiochromite using the synchrotron-based powder X-ray diffraction and diamond anvil cells up to 48.6 GPa and 2450 *** results have shown that spinel-type magnesiochromite first decomposes into corundum-type‘Cr_(2)O_(3.’+B1-type‘MgO’at 11–14 GPa and 1250–1450 K,then modified ludwigite(mLd)-type‘Mg_(2)Cr_(2)O_(5)’+corundum-type‘Cr_(2)O_(3.’at 14.3.20.5 GPa and 13.0–2000 K,and finally CaTi_(2)O_(4)-type phase at 24.5 *** the quenching procession from high-temperature-pressure conditions,the mLd-type phase appeared again and was kept at ambient *** also obtained the isothermal equation states of spinel-type and CaTi_(2)O_(4)-type phases,revealing the composition effect on their *** on the updated results,we propose chromitites could not experience pressure exceeding∼14.3.GPa(approximate maximum depth∼400 km)in the subduction-recycling genesis model.

关键词： chromite high-temperature and high-pressure phase transitions equation of state chromitites genesis

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Mars exploration——In situ K-Ar dating of jarosite

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Science china earth sciences 2024年第3期67卷 641-656页

作者： Jing YANG Dewen ZHENG Ying wu Hong CHEN Li YANG Bin ZHANG key laboratory of Active Tectonics and geological Safety Ministry of Natural ResourcesInstitute of GeomechanicsChinese Academy of Geological SciencesBeijing 100081China state key laboratory of {3.quake Dynamics Institute of GeologyChina Earthquake AdministrationBeijing 100029China Institute of earth sciences China University of GeosciencesBeijing 100083China key laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029Chin

To accurately determine the chronological framework of climatic variations recorded by various Martian terrains, the absolute ages of Martian events and cratering rate need to be constrained by either in situ dating or returned samples. In situ K-Ar dating is currently a more plausible dating technique as compared with sample return. Jarosite(KFe_(3.[SO_(4)]_(2)[OH]_(6)) is the only confirmed K sulfate mineral that is widely present on Mars, as indicated by in situ detection, orbital remote sensing, and meteorite studies. Jarosite can be used for precise K-Ar and (40)Ar/(3.)Ar dating. The preservation of jarosite on Mars provides information about the nature and duration of aqueous processes on the Martian surface. Different ages of Martian jarosite represent the key to constraining the transition from Martian surface water activity to arid climatic conditions. This paper summarizes recent advances in our knowledge of the spatial distribution of Martian jarosite, its mineralogical properties and stability on Mars, the Ar diffusion kinetics of jarosite, and the current status of in situ K-Ar dating. Moreover, we examine the key scientific issues to be addressed for in situ K-Ar dating of jarosite and Martian sample return missions, and discuss future research directions.

关键词： Mars Jarosite In situ K-Ar dating Ar diffusion Stability

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Zircon Record of Ocean-Continent Subduction Transition Process of Dulan UHPM Belt, North Qaidam

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Journal of earth Science 2015年第5期26卷 617-625页

作者： Jianzhou Yang Xiaochi Liu yuanbao wu Yanling Sun Department of earth sciences China University of GeosciencesWuhan state key laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences

The North Qaidam UHPM（ultra-high pressure metamorphism） belt is a typical continental subduction-collision belt containing continental crust deep subduction metamorphic products and oceanic crust relics, And it is an ideal region to study the ocean-continent transition and exhumation mechanism of oceanic UHP rocks during continental deep subduction process. In this paper, we report integrated in situ U-Pb, Lu-Hf and O isotope analyses of zircons from a serpentinized harzburgite as well as U-Pb dating for zircons from a kyanite eclogite from the North Qaidam Dulan UHPM terrane, and use these data to discuss the ocean-continent transition and exhumation mechanisms of oceanic UHP rocks during continental deep subduction. The serpentinized harzburgite was dated at 448±9 Ma, consistent with 455±5 Ma age for the kyanite eclogite within analytical errors. Zircons from the serpentinized harzburgite have uniform 176Hf/177 Hf values ranging from 0.282 842 to 0.282 883.and εHf（t） values from 11.6 to 13.3. Zircon δ^18O values of the serpentinized harzburgite vary from 4.47‰ to 5.29‰, slightly lower than the value of 5.3.±0.6‰ for the normal mantle zircon. These Hf-O isotopic features indicate that the protolith of the serpentinized harzburgite was derived from depleted-mantle source, and might have experienced high-temperature rock-water interaction. Therefore, the serpentinized harzburgite was possibly located in the lower part of an oceanic section. The serpentinized harzburgite and kyanite eclogite were both formed due to the subduction of oceanic crust. The UHP metamorphism occurred successively from the oceanic crust to continental crust rocks of the North Qaidam UHP terrane. Low-density serpentinized peridotite and continental rocks possibly have negative buoyancy and play a key effect on preservation and exhumation of high-density oceanic eclogite.

关键词： continental deep subduction ocean-continent transformation North Qaidam harzburgite eclogite

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