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中国科学院地质与地球物理研究所第11届（2.11年度）学术年会

作者： Huaying wu~(ab*),Lianchang Zhang~a,Bo Wan~(bc),Zhiguang Chen~(a,b),Xiaojing Zhang~a,b),Peng Xiang~(a,b) ~aKey Laboratory of Mineral Resources,Institute of geology and Geophysics,{2. academy of sciences,P.O.Box 982.,beijing 100029.People’s Republic of china ~bGraduate University of chinese academy of sciences,beijing 100049,People’s Republic of china ~cState Key Laboratory of Lithosphere Evolution,Institute of geology and Geophysics,{2. academy of sciences,P.O.Box 982.,beijing 100029.People’s Republic of china

The Aolunhua porphyry Mo-Cu deposit is located in the northern margin of the North china Craton(NCC),and belongs to the northern part of the Xilamulun metallogenic *** than 90%of the mineralization occurs within the Aolunhua monzogranite-porphyry;a small part is hosted within quartz veins that crosscut Late Permian *** syenogranite,occurring as dikes and cutting through the Aolunhua monzograniteporphyry, is radially distributed in the mining *** U-Pb ages show that the Aolunhua monzogranite-porphyry and the post-ore syenogranite have concordant Pb/U ages of 138.7±1.2.Ma and 131.4±2.8 Ma,*** on analyses of major,trace elements and Hf-isotopes,the Aolunhua porphyry is characterized by high Sr low Y with high La/Yb and Sr/Y ratios typical of adakitic granites,whereas the post-ore syenogranite has lower Sr and higher Y values,showing apparently negative Eu anomalies (δEu=0.2. to 0.31).The Hf isotopic composition of the Aolunhua porphyry[ε(t)=+3.6to+9.2.and the post-ore syenogranite[ε(t)=+3.6 to+8.7]indicates that both juvenile crustal sources and depleted mantle contributed to their *** regional geological setting together with the discrepancy of geochemistry between the Aolunhua porphyry and the post-ore syenogranite probably indicates that they formed in different tectonic *** Aolunhua porphyry is derived from partial melting of the thickened crust due to underplating of the basaltic magma under the transformation tectonic regime,while the post-ore syenogranite comes from the crustal root melting during the lithospheric delamination stage under the lithosphere thinning regime of northeast china.

关键词： Zircon U-Pb dating Porphyry Mo-Cu deposit Aolunhua Xilamulun metallogenic belt Northeast china

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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 University 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 157–132.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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From deep basin gas to diagenetic trap—An example from the Yulin Gas Field in the Ordos Basin

From deep basin gas to diagenetic trap—An example from the ...

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中国科学院地质与地球物理研究所2.07学术年会

作者： ZHANG LiuPing~(1+),LUO XiaoRong~1,MA XinHua~2.CHEN MengJin~2.& wu MingHui~1 1 Key Laboratory of Petroleum Resource,chinese {2. of sciences,beijing 100029.china 2.Research Institute of Petroleum Exploration and Development,Petrochina,beijing 100083,china

In the updip portion of the Yulin Gas Field in the Ordos Basin,there are no any structural,stratigraphic and sedimentary lithologic *** thin-section petrography,ultraviolet fluorescence microscopy, micro-thermometry and Raman microspectrometry,this paper finds out the diagenetic trap and studies the diagenetic history of this *** was revealed that three phases of diagenesis and hydrocarbon charging happened in late Triassic,late Jurassic and the end of early Cretaceous *** the first two phases,acid geofluid entered the reservoir and caused dissolution and *** the porosities had been increased,further compaction accompanying re-subsidence resulted in tight sandstone and *** the end of the early Cretaceous,bulk of gas migrated into the tight ***,however,kept on in the updip portion of this field due to low gas saturation and formed the diagenetic *** mechanism for gas accumulation was changed from deep basin gas to diagenetic trap,which offers a sealing condition that can retain gas for much longer time.

关键词： natural gas deep basin gas tight reservoir diagenetic trap Ordos Basin

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Initial analysis of the mechanism of the Wenchuan Earthquake(Southwest china),12.May 2.08

Initial analysis of the mechanism of the Wenchuan Earthquake...

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中国科学院地质与地球物理研究所2.08学术年会

作者： wu Faquan·Fu Bihong·Li Xiao·Liu Jianyou Institute of geology and Geophysics, {2. academy of Scinences,100029.beijing,china

This short paper reports some initial fieldwork carried out in four locations shortly after the M8.0 Wenchuan Earthquake which took place on 12.May 2.08 in Southwest *** field evidence,notably that obtained in the town of Xiaoyudong,suggests that the primary motion was related to vertical movement along the Longmenshan *** damage seen was consistent with a right-lateral strike-slip component.

关键词： Wenchuan Great Earthquake Initial motion mechanism Thrusting up Right-lateral strike-slip

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Discrete total variation calculus and Lee s discrete mechanics

Discrete total variation calculus and Lee s discrete mechani...

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中国科学院地质与地球物理研究所2.06学术年会

作者： Jing-Bo Chen~(a,*),Han-Ying Guo~b,Ke wu~c a Institute of geology and Geophysics,{2. academy of sciences, P.O.Box 982.,beijing 100029.china b Institute of Theoretical Physics,{2. academy of sciences, P.O.Box 2.35,beijing 100080,china c Department of Mathematics,Capital Normal University,beijing 100037,china

A discrete total variation calculus is presented in this *** this calculus,we prove that the solution of the systemof difference equations in Lee discrete mechanics preserves a symplectic structure in the space-time *... 详细信息

关键词： Discrete total variation Lees discrete mechanics Symplecticity

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High-precision direct determination of the 87Sr/86Sr isotope ratio of bottled Sr-rich natural mineral drinking water using multiple collector inductively coupled plasma mass spectrometry

High-precision direct determination of the 87Sr/86Sr isotope...

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中国科学院地质与地球物理研究所第11届（2.11年度）学术年会

作者： Yue-Heng Yang~*,Fu-Yuan wu,Lie-Wen Xie,Jin-Hui Yang,Yan-Bin Zhang State Key Laboratory of Lithospheric Evolution,Institute of geology and Geophysics,{2. academy of sciences,beijing,100029.china

We describe a precise and accurate method for the direct determination of the Sr/Sr isotope ratio of botded Sr-rich natural mineral drinking water using multiple collector inductively coupled plasma mass spectrometry(MC-ICP-MS).The method is validated by the comparative analysis of the same water with and without cation-exchange resin *** work indicates that isobarically interfering elements can be corrected for when Rb/Sr<0.05(Rb/Sr<0.015),and that the matrix elements(Ca,Mg,K and Na) have no significant effect on the accuracy of the Sr isotope *** method is simple,rapid,eliminates sample preparation time,and avoids potential contamination during complicated sample-preparation procedures. Therefore,the high sample throughput inherent to the MC-ICP-MS can be fully exploited.

关键词： 87Sr/86Sr isotope ratio Bottled Sr-rich natural mineral drinking water Direct determination Multiple collector ICP-MS

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Extension of drylands in northern china around 2.0 kaBP linked with the uplift of the southeast margin of Tibetan Plateau

Extension of drylands in northern China around 250 kaBP link...

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中国科学院地质与地球物理研究所2.02.术年会

作者： wu haibin~a Guo Zhengtang~c Fang Xiaomin~(bc) Zhang Jiawu~b and Chen Fahu~b a Institute of {2. and Geophysics,chinese academy of sciences,beijing 100029.china b.Department of Geography,Lanzhou University,Lanzhou 730000,china c.Institute of Earth Environment,chinese academy of sciences,Xi’an 710075,china

Study on two sections,one located at wu-wei near the Tengger Desert in northwestern china,another located near Ganzi at the southeast margin of the Tibetan Plateau in southwest china, reveals a coeval drying step occurred at～2.0 *** is expressed by the increase in eolian grain-size at wuwei,and by a drastic extension of C4 plants and a decrease of loess chemical weathering intensity at *** of the available eolian data indicates that the event has also been clearly documented in the loess sections near the deserts in northern china,and in the eolian records from the North *** the contrary,the signal is rather weak for the central and southern Loess Plateau regions as well as for Central Asia,where the climates are influenced by the southeast Asian monsoon and the westerlies,*** the climate at Ganzi is under strong control of the southwest Asian monsoon,we interpret this drying step as a result of decreased influence of the southwest summer *** decrease in monsoon moisture is attributable to the uplift of the Hengduan Mountains,the southeast margin of the Tibetan Plateau at～2.0 ka ago.

关键词： aridification loess-paleosol sequences organic carbon isotope chemical weathering intensity Tibetan Plateau

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COMPARATIVE　GEOLOGICAL　STUDY　BETWEEN　FUJIAN　REGION　IN　china　AND　INNER　ZONE　OF　SOUTHWEST　JAPAN

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Scientia Geologica Sinica 1996年第4期 425-434页

作者： Yoshikazu Hayama and Michiya Inomata (Tokyo University of Agriculture, Tokyo, 156, Japan)Yoshimitsu Koido (Gifu University, Gifu, 501-11, Japan)wu Genyao and Zhang Wenhua (Institute of geology,{2., beijing 100029. china)Hiroo Kaga

ＣＯＭＰＡＲＡＴＩＶＥＧＥＯＬＯＧＩＣＡＬＳＴＵＤＹＢＥＴＷＥＥＮＦＵＪＩＡＮＲＥＧＩＯＮＩＮＣＨＩＮＡＡＮＤＩＮＮＥＲＺＯＮＥＯＦＳＯＵＴＨＷＥＳＴＪＡＰＡＮＹｏｓｈｉｋａｚｕＨａｙａｍａａｎｄＭｉｃｈｉｙａＩｎｏ...

ＣＯＭＰＡＲＡＴＩＶＥＧＥＯＬＯＧＩＣＡＬＳＴＵＤＹＢＥＴＷＥＥＮＦＵＪＩＡＮＲＥＧＩＯＮＩＮＣＨＩＮＡＡＮＤＩＮＮＥＲＺＯＮＥＯＦＳＯＵＴＨＷＥＳＴＪＡＰＡＮＹｏｓｈｉｋａｚｕＨａｙａｍａａｎｄＭｉｃｈｉｙａＩｎｏｍａｔａ（ＴｏｋｙｏＵｎｉｖｅｒｓ...

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Automatic recognition of landslides based on YOLOv7 and attention mechanism

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Journal of Mountain Science 2024年第8期21卷 2681-2695页

作者： SONG Yewei GUO Jie wu Gaofeng MA Fengshan LI Fangrui Key Laboratory of Shale Gas and Geoengineering Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation academy for Earth sciences Chinese Academy of SciencesBeijing 100029China University of chinese academy of sciences Beijing 100049China

Landslide disasters comprise the majority of geological incidents on slopes,posing severe threats to the safety of human lives and property while exerting a significant impact on the geological *** rapid identification of landslides is important for disaster prevention and control;however,currently,landslide identification relies mainly on the manual interpretation of remote sensing *** interpretation and feature recognition methods are time-consuming,labor-intensive,and challenging when confronted with complex ***,automatic landslide recognition has emerged as a pivotal avenue for future *** this study,a dataset comprising 2.00 landslide images was constructed using open-source remote sensing images and *** YOLOv7 model was enhanced using data augmentation algorithms and attention *** optimization models were formulated to realize automatic landslide *** findings demonstrate the commendable performance of the optimized model in automatic landslide recognition,achieving a peak accuracy of 95.92..Subsequently,the optimized model was applied to regional landslide identification,co-seismic landslide identification,and landslide recognition at various scales,all of which showed robust recognition ***,the model exhibits limitations in detecting small targets,indicating areas for refining the deep-learning *** results of this research offer valuable technical support for the swift identification,prevention,and mitigation of landslide disasters.

关键词： Deep learning Landslide detection Natural disasters Attention mechanism Remote sensing

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川东二叠纪生物礁的再认识

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石油与天然气地质 2002年第1期23卷 12-18页

作者：范嘉松吴亚生中国科学院地质与地球物理研究所北京100029

通过川东 8口二叠纪长兴期钻井岩芯剖面的详细研究 ,铁山 5井、天东 10井代表典型的礁相剖面 ;板东 4井、双 15井既有礁相沉积 ,且有棘屑滩沉积 ;卧 117井、黄龙 1井以及云安 14井基本上由碳酸盐台地沉积组成 ;池 2.4井出现两种类型的礁... 详细信息

通过川东 8口二叠纪长兴期钻井岩芯剖面的详细研究 ,铁山 5井、天东 10井代表典型的礁相剖面 ;板东 4井、双 15井既有礁相沉积 ,且有棘屑滩沉积 ;卧 117井、黄龙 1井以及云安 14井基本上由碳酸盐台地沉积组成 ;池 2.4井出现两种类型的礁相 :海绵骨架礁和海绵障积礁。川东礁相剖面中的白云岩以海水与淡水混合作用而成的白云石化为主导因素 ,但它们在深埋阶段以后 ,又遭受后期白云石化的叠加 ,因此表现出许多深埋白云石化的地化特征。白云岩的原始沉积既可能是礁骨架岩 ,也可能是棘屑滩 ,甚至是碳酸盐台地沉积。因此在寻找礁型白云岩储层时。

关键词：油气地质生物礁二叠纪川东钻井岩芯

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