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Science china Earth {1. 2004年第3期47卷 247-254页

作者： zhu jingquan1. li yongtie2,{1., Chinese academy of sciences, beijing 1.0029, china 2. Research institute of Petroleum Exploration and Development, CNPC, beijing 1.0083, china Chinese Acad Sci Inst Geol & Geophys Beijing 100029 Peoples R China CNPC Res Inst Petr Explorat & Dev Beijing 100083 Peoples R China

The d 1.C values of Lower Cretaceous Aptian-Albian platform-type carbonates in the Cuoqin Basin, North Tibet vary between 2.48 and 5.46. The mean value is 3.93. The values are not only provided with positive excursion, but also 1.17 higher than those of con-temporaneous pelagic carbonates which possess pretty high d 1.C values. The origin is ap-proached. During the oceanic anoxic events, a great number of organisms were rapidly buried, causing the increase of the d 1.C value of oceanic total dissolved carbon (TDC) and generally promoting the values of marine carbonates. After that, owing to the organisms undergoing dif-ferent isotopic fractionation in the paleo-ocean with stratified structure, d 1.C values of shallow sea carbonate were obviously higher than those of pelagic carbonates.

关键词： shallow water carbonate, stable carbon isotope, paleooceanography, Aptian-Albian stage, Cuoqin Basin.

Carbon isotope composition and its implications of Lower Cretaceous Aptian-Albian shallow water carbonates in the Cuoqin Basin,North Tibet

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Carbon isotope composition and its implications of Lower Cre...

中国科学院地质与地球物理研究所2004学术年会

作者： zhu jingquan~1,li yongtie~2,jiang maosheng~1 & chen daizhao~1.1.institute of geology and geophysics,Chinese academy of sciences,beijing 1.0029,china 2.Research institute of Petroleum Exploration and Development,CNPC,beijing 100083,china

TheδC values of Lower Cretaceous Aptian-Albian platform-type carbonates in the Cuoqin Basin,North Tibet vary between 2.48‰and 5.46‰.The mean value is 3.93‰.The values are not only provided with positive excursion,but also 1.17‰higher than those of contemporaneous pelagic carbonates which possess pretty highδC *** origin is approached. During the oceanic anoxic events,a great number of organisms were rapidly buried,causing the increase of theδC value of oceanic total dissolved carbon(TDC) and generally promoting the values of marine *** that,owing to the organisms undergoing different isotopic fractionation in the paleo-ocean with stratified structure,δC values of shallow sea carbonate were obviously higher than those of pelagic carbonates.

关键词： shallow water carbonate stable carbon isotope paleooceanography Aptian-Albian stage Cuoqin Basin

Quantitative prediction model for the depth limit of oil accumulation in the deep carbonate rocks:A case study of Lower Ordovician in Tazhong area of Tarim Basin

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Petroleum Science 2024年第1期21卷 115-124页

作者： Wen-Yang Wang Xiong-Qi Pang Ya-Ping Wang Zhang-Xin chen Fu-Jie {1. Ying chen State Key Laboratory of lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China College of Geosciences China University of Petroleum(Beijing)Beijing102249China Research institute of Exploration and Development PetroChina Southwest Oil&Gas Field CompanyChengdu610041SichuanChina Chemical and Petroleum Engineering Schulich School of EngineeringUniversity of CalgaryCalgaryT2N 1N4Canada

With continuous hydrocarbon exploration extending to deeper basins,the deepest industrial oil accumulation was discovered below 8,200 m,revealing a new exploration ***,the extent to which oil exploration can be extended,and the prediction of the depth limit of oil accumulation(DLOA),are issues that have attracted significant attention in petroleum *** it is difficult to characterize the evolution of the physical properties of the marine carbonate reservoir with burial depth,and the deepest drilling still cannot reach the ***,the DLOA cannot be predicted by directly establishing the relationship between the ratio of drilling to the dry layer and the *** this study,by establishing the relationships between the porosity and the depth and dry layer ratio of the carbonate reservoir,the relationships between the depth and dry layer ratio were obtained *** depth corresponding to a dry layer ratio of 1.0%is the *** on this,a quantitative prediction model for the DLOA was finally *** results indicate that the porosity of the carbonate reservoir,Lower Ordovician in Tazhong area of Tarim Basin,tends to decrease with burial depth,and manifests as an overall low porosity reservoir in deep *** critical porosity of the DLOA was 1.8%,which is the critical geological condition corresponding to a 1.0%dry layer ratio encountered in the *** depth of the DLOA was 9,000 *** study provides a new method for DLOA prediction that is beneficial for a deeper understanding of oil accumulation,and is of great importance for scientific guidance on deep oil drilling.

关键词： Deep layer Tarim Basin Hydrocarbon accumulation Depth limit of oil accumulation Prediction model

High-resolution carbon isotope record for the Paleocene-Eocene thermal maximum from the Nanyang Basin,Central china

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High-resolution carbon isotope record for the Paleocene-Eoce...

中国科学院地质与地球物理研究所第十届(201.年度)学术年会

作者： zhu Min~(1,2*),DING Zhongli~1,WANG Xu~1,chen Zuoling~1,jiang HanChao~3, DONG XinXin~1,JI Junliang~4,TANG ZiHua~1 & LUO Pan~1.1 Key Laboratory of Cenozoic geology and Environment,institute of geology and geophysics,Chinese academy of sciences,beijing 1.0029, china 2 The Graduate University of Chinese academy of sciences,beijing 100049,china 3 State Key Laboratory of Earthquake Dynamics,institute of geology,china Earthquake Administration,beijing 1.0029,china 4 Key Laboratory of Biogeology and Environmental geology,Ministry of Education,china University of Geosciences,Wuhan 430074,china

The Paleocene-Eocene thermal maximum(PETM) was a transient episode of global warming,associated with massive atmospheric greenhouse gas input that occurred at the Paleocene/Eocene *** and isotope stratigraphic studies indicate that the PETM event is well documented in the marl deposits of the Yuhuangding section in the Nanyang Basin,Central china,with a carbon isotope negative excursion of～6.1.within 1.-m-thick marl *** is the highest resolution record of the PETM so far found in the *** PETM event was triggered within 2-cm-thick marl sediments,with a decrease ofδC (stable carbon isotope ratio) from -3.2‰to -5.2‰,suggesting a massive methane hydrate release for a transient period that was possibly caused by a catastrophic event.A comparison between marine and terrestrial records indicates a"Three-Phase Model"for the PETM *** there is a rapid negative excursion in theδC record,followed by a slowly decreasing trend,and then a gradual positive recovery,corresponding respectively to a rapid dissociation of oceanic methane hydrate,followed by a slow release of methane and then the consumption of the released methane.

关键词： PETM carbon isotope greenhouse gases Nanyang Basin

THE RESEARCHES ON PROCESSING TECHNIQUES OF OFFS HO RE M ULTICOMPO NENT SEISMIC DATA

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THE RESEARCHES ON PROCESSING TECHNIQUES OF OFFS HO RE M ULTI...

中国科学院地质与地球物理研究所2003学术年会

作者： Fu Dandan~1.He Hanyi~2 zhu Hongzhang~1.Shen {1.{1.~1.{1. Wenyi~1.chen Baoshu~1.Han Qingshi~1.zhu Shufen~1.(1.Exploration institute of CNOOC Research Center,Hebei 2.Research Center of CNOOC,beijing)

For the offshore petroleum exploration in china,it has long existed that the fuzzy zones and {1.thological false bright spots can’t be e{1.minated by the P-wave seismic *** recent years,three massive multi-component seismic explorations of 2D and 3D have been conducted by CNOOC in offshore china,and a set of commercial processing system for offshore multicomponent seismic data(OMS) was *** two sets of 2D multicomponent seismic data acquired in South china Sea have been successfully processed with this system, indicating its mature processing techniques and good converted wave ***,a part of 3D converted -wave processing module has been added into the system by ourself developing,and a trial processing was made for a part of 3D offshore multicomponent seismic data acquired in Bohai *** present,there are still more difficulties and problems in processing 3D multicomponent seismic data,and the 3D converted-wave processing methods also need to be further *** these reasons,the next research direction of multicomponent seismic data processing techniques are proposed.

关键词： offshore multicomponent seismic 2D seismic exploration 3D seismic exploration seismic data processing P-wave converted wave processing technique

中国东部燕山期高原的发育及对矿产和油气资源评价的启示

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石油实验地质 2002年第1期24卷 3-12页

作者：吴根耀陈焕疆马力徐克定中国科学院地质与地球物理研究所北京100029 同济大学海洋地质与地球物理系上海200092 中国石化集团公司江苏油田江苏江都225261 中国石油天然气总公司浙江石油勘探处浙江杭州310013

作者首次提出苏皖地块是特提斯演化阶段一个独立的构造单元。基于火成岩及变质岩和古地磁的研究成果认为苏鲁洋在晚侏罗—早白垩世最终闭合 ,苏皖地块与华北克拉通碰撞而出现高原 ,因而中国东部燕山期高原性质上应属碰撞高原。文中还讨... 详细信息

作者首次提出苏皖地块是特提斯演化阶段一个独立的构造单元。基于火成岩及变质岩和古地磁的研究成果认为苏鲁洋在晚侏罗—早白垩世最终闭合 ,苏皖地块与华北克拉通碰撞而出现高原 ,因而中国东部燕山期高原性质上应属碰撞高原。文中还讨论了高原边缘的冲断 -推覆带和其内部的复杂结构 (包括沿主碰撞 -剪切带发育的相对高峻地带和相对开阔的山间磨拉石盆地 ) ,认为该高原是规模宏伟的东亚燕山造山系中变形变质相对弱的部分。高原自早白垩世末起坍塌 ,晚白垩世是东亚燕山造山系的全面坍塌期 ,第三纪时燕山期高原已不复存在。强烈的岩浆活动不仅使苏皖地区 ,也使胶东、小秦岭、赣东北等地的燕山期成矿具明显的区域专属性。晚中生代—新生代的构造事件造成苏皖—黄海地区岩石圈强度低、地热梯度高。

关键词：中国东部燕山期高原发育矿产油气资源评价

旋转变换和viterbi算法在波动方程叠前深度偏移预处理中的应用

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新疆石油地质 2004年第3期25卷 315-316页

作者：朱振宇刘洪裴江云吕小林李幼铭中国科学院地质与地球物理所北京100029 中国石油大庆油田有限责任公司勘探开发研究院黑龙江大庆163712

波动方程叠前深度偏移运算,要求所输入的地震数据网格为规则化网格。在地震数据的野外采集中,由于地形复杂、考虑地下覆盖次数等问题,观测系统多存在变观现象。同时,为了避免由于联络测线方向采样稀疏而产生的空间假频,须要在该方向进... 详细信息

波动方程叠前深度偏移运算,要求所输入的地震数据网格为规则化网格。在地震数据的野外采集中,由于地形复杂、考虑地下覆盖次数等问题,观测系统多存在变观现象。同时,为了避免由于联络测线方向采样稀疏而产生的空间假频,须要在该方向进行地震道的插值。运用旋转变换解决了测线与坐标轴方向不一致的问题,用viterbi算法完成了同向轴的自动拾取,结果令人满意,为波动方程叠前深度偏移预处理提供了两种有效可行的方法。

关键词：旋转变换 viterbi算法波动方程地震数据网格预处理

Modern pollen distributions in Qinghai-Tibetan Plateau and the development of transfer functions for reconstructing Holocene environmental changes

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Modern pollen distributions in Qinghai-Tibetan Plateau and t...

中国科学院地质与地球物理研究所第1.届（201.年度）学术年会

作者： Houyuan Lu~(a,*),Naiqin Wu~a,Kam-biu liu~b,liping zhu~c,Xiangdong Yang~d,Tandong Yao~c,Luo Wang~a, Quan li~a,Xingqi liu~d,Caiming Shen~e,Xiaoqiang li~f,Guobang Tong~g,Hui jiang~h aKey Laboratory of Cenozoic geology and Environment,institute of geology and geophysics,Chinese academy of sciences,beijing 1.0029,china b Department of Oceanography and Coastal sciences,Louisiana State University,Baton Rouge,LA 70803,USA cinstitute of Tibetan Plateau Research,Chinese academy of sciences,beijing 100085,china d State Key Laboratory of Lake Science and Environment,Nanjing institute of limnology and Geography,Chinese academy of sciences,Nanjing 210008,china e Atmospheric sciences Research Center,State University of New York,Albany,NY 12203,USA f institute of Vertebrate Paleontology and Paleoanthropology,Chinese academy of sciences,beijing 100044,china g institute of Hydrology and geology,Chinese academy of Geological sciences,Zhengding 050803,china h State Key Laboratory of Estuarine and Coastal Research,East china Normal University,Shanghai 200062,china

This study investigates the distribution of modern pollen assemblages in the Qjnghai-Tibetan Plateau, china,based on surface soil samples collected at 1.02 sites along an altitudinal gradient of 1. -5500 m asl,where mean annual precipitation(MAP) ranges from 1. to 1.40 mm and mean annual temperature(MAT) from -1.to 21.5℃.A total of 1.3 pollen taxa were found with relative abundances greater than 1.in at least two *** correspondence analysis(CCA) was used to determine the main environmental variables influencing pollen *** results reveal that MAP is the most significant dominant ***,MAT,altitude(ALT),July temperature(MT7),and relative humidity(HHH) are also significant variables that clearly follow the gradients in the CCA ordination, suggesting that pollen assemblages probably not only reflect a single c{1.matic parameter,but also a variety of other c{1.matic inter-related parameters. Transfer functions,based on locally weighted weighted averaging(LWWA),were developed for MAP (R-boot = 0.89,RMSEP = 1.9 mm),MAT(R-boot = *** = 2.3℃),ALT(R-boot = 0.73, RMSEP = 597 m),HHH(R-boot = 0.82,RMSEP = 4.5%),and July mean precipitation(MP7)(R- boot = 0.87,RMSEP = 23 ram).Overall,our results confirm that pollen can provide re{1.able estimates of the primary c{1.matic *** app{1.cation of the LWWA model to the fossil records of chen Co Lake allowed quantitative inferences to be made about Holocene c{1.matic changes in the southern Tibetan Plateau,suggesting that LWWA is a robust ca{1.bration method for quantitative palaeo-environ-mental reconstruction based on pollen data in the regions.

关键词： Qinghai-Tibetan plateau Vegetation Pollen Transfer functions Holocene Climatic changes

锂的圈层循环与资源富集过程:从高原盐湖到造山带伟晶岩

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岩石学报 2024年第2期40卷 591-604页

作者：陈晨闫庆贺章荣清李庆宽姜禾禾刘海洋秦占杰张西营孙卫东中国科学院海洋研究所深海研究中心青岛266071 中国地质大学地质过程与矿产资源国家重点实验室北京100083 云南大学地球科学学院昆明650500 南京大学地球科学与工程学院内生金属矿床成矿机制研究国家重点实验室南京210023 中国科学院青海盐湖研究所青海省盐湖地质与环境重点实验室西宁810008 中国科学院地质与地球物理研究所岩石圈演化国家重点实验室北京100029

盐湖卤水型锂矿与富锂伟晶岩是目前最为主要的可利用锂资源,前者是经地表风化/高温水岩淋滤形成的水体通过蒸发作用浓缩而成的卤水,而后者被认为是陆表风化沉积物熔融产物经高演化形成的富锂硬岩。大陆地壳是此类表生物质循环最根本的物... 详细信息

盐湖卤水型锂矿与富锂伟晶岩是目前最为主要的可利用锂资源,前者是经地表风化/高温水岩淋滤形成的水体通过蒸发作用浓缩而成的卤水,而后者被认为是陆表风化沉积物熔融产物经高演化形成的富锂硬岩。大陆地壳是此类表生物质循环最根本的物源,因而探究富锂地壳的形成及其表生风化剥蚀对于理解盐湖与伟晶岩锂成矿至关重要。本文将从元素循环视角切入,结合内生高温-外生低温过程中锂的元素地球化学行为,梳理锂在俯冲带各圈层的循环过程,探讨富锂地壳的形成机制及其对高原盐湖与造山带伟晶岩锂资源发育的影响。研究发现:(1.俯冲板片对弧岩浆锂的物质贡献有限;(2)厚地壳环境下的弧岩浆具有更高的锂含量;(3)造山带富锂弧岩石的循环应是盐湖与伟晶岩锂成矿的重要控制因素。

关键词：锂循环盐湖 LCT伟晶岩造山地壳加厚大陆风化

Emplacement age and tectonic implications of the brecciated limestone at the edge of the Longmenshan klippe

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Science china Earth {1. 2016年第3期59卷 590-600页

作者： XUE Zhen Hua SHANG Qing Hua jiang Wen Ying WANG Qing {1. li Shuang Jian State Key Laboratory of lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences Betljing 100029 institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing 100044 China University of Chinese academy of {1. Beijing 100049 China institute of Petroleum Exploration and Development China Petroleum and Chemical Corporation Beijing 100083 China

The Longmenshan thrust belt(LMTB) is one of the best natural laboratories for thin-skinned tectonics and has developed a series of NE-SW trending fold-and-thrust structures represented by a series of nappes and klippes, exemplified by the Tangbazi and Bailuding klippe. However, the timing and emplacement mechanism of these klippes are still in dispute. Three possible mechanisms have been proposed:(1. a Mesozoic-Cenozoic southeastward thrusting,(2) a Cenozoic gravity gliding, and(3) glacial deposition. Almost all of these klippes are tectonic and overlaid on folded Late Triassic sandstone except the Tangbazi klippe, which is located in the center of the LMTB and has a narrow tail extending southeastward and covering Jurassic-Quaternary rocks. This geometric relationship is considered the most important stratigraphic evidence to support the post-Cenozoic emplacement of the Longmenshan klippe. Our structural and petrological observations show that the rocks at the front of the Tangbazi and Bailuding structures are brecciated limestone, which is assumed to have been generated by a gravitational collapse and is not characteristic of the massive Permian strata. Artemisia pollen, which has been exclusively recognized in post-Late Eocene strata in Central Asia, was found in the matrix of this brecciated limestone. Therefore, our discovery indicates that the brecciated limestone was deposited after the Late Eocene rather than during the Permian as annotated on the geological map. In contrast, unbrecciated, massive Permian limestone overlaid on the folded Late Triassic rocks. Hence, the anomalous relationship of Permian strata overlaying Late Triassic rocks cannot be evidence of Cenozoic emplacement. According to currently recognized bulk strata relationships, we can only be sure that the klippe was emplaced in the post Late Triassic. The petrological characteristics of the brecciated limestone show that it was crumbled before the re-sedimentation of the breccia, implying tha

关键词： Longmenshan thrust belt Klippe Artemisia Brecciated limestone Thin-skinned structure