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Study on crustal thickness and the prediction of prolific depressions:the Bohai Basin as an example

Acta Oceanologica Sinica 2024年第4期43卷 92-104页

作者： Mengke Cai Gongcheng Zhang Wanyin wang dingding wang College of Geological Engineering and Geomatics Chang’an UniversityXi’an 710054China China National Offshore Oil Corporation(CNOOC)Research Institute Co. Ltd.Beijing 100028China Key Laboratory of Marine Geology and Environment Chinese Academy of SciencesQingdao 266071China National Engineering Research Center of Offshore Oil and Gas Exploration Beijing 100028China Department of Earth Environment and Resources SciencesUniversity of Naples FedericoⅡNaples 80138Italy

The deep crustal structure is closely related to oil and gas *** the oil and gas enrichment of depressions based on the Moho depth and crustal thickness is a promising research topic with significant implications for guiding exploration in petroliferous *** this study,seismic data were used as a constraint on the use of satellite gravity anomaly inversion to obtain the distribution of Moho depth and crustal thickness in the Bohai *** factors were calculated to analyze the differential distribution of deep crustal structural *** indicators,including the minimum Moho depth,minimum crustal thickness,sum of Moho stretching factors,and sum of crustal stretching factors,were *** component analysis was applied to reduce the dimensionality of the multi-indicator system and obtain an oil and gas enrichment score for quantitative prediction of favorable prolific *** deviation between the inverted Moho depth and seismic constraints was small;thus,the data effectively reflect the variations in the characteristics of each *** analysis revealed significant statistical features related to the minimum Moho depth/crustal thickness and the sum of Moho/crustal stretching factors associated with prolific *** on the oil and gas enrichment score,the depressions were classified into four categories related to their different deep crustal structural *** active ClassⅠ,ClassⅡ,and ClassⅢdepressions are predicted to be favorable prolific *** study expands the research on quantitatively predicting favorable prolific depressions in the Bohai Basin using the deep crustal structure and can contribute to reducing production costs and improving exploration efficiency in future explorations.

关键词： Bohai Basin satellite gravity anomaly deep crustal structure Moho depth crustal thickness favorable prolific depression

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Structural features in the mid-southern section of the Kyushu–Palau Ridge based on satellite altimetry gravity anomaly

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Acta Oceanologica Sinica 2024年第4期43卷 50-60页

作者： Feifei Zhang dingding wang Xiaolin Ji Fanghui Hou Yuan Yang Wanyin wang School of Geological Engineering and Geomatics Chang’an UniversityXi’an 710054China Qingdao Institute of Marine Geology China Geological SurveyQingdao 266071China Information and Navigation College Air Force Engineering UniversityXi’an 710077China National Engineering Research Center of Offshore Oil and Gas Exploration Beijing 100028China Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of SciencesQingdao 266071China

The Kyushu–Palau Ridge(KPR),an anti-S-shaped submarine highland at the center of the Philippine Sea Plate(PSP),is considered the residual arc of the Izu–Bonin–Mariana Island Arc,which retains key information about the cessation of the Western Philippine Basin(WPB)expansion and the Parece Vela Basin(PVB)***,using the new generation of satellite altimetry gravity data,high-precision seafloor topography data,and newly acquired ship-borne gravity data,the topographic and gravity characteristics of the KPR mid-southern section and adjacent region are *** distribution characteristics of the faults were delineated using the normalized vertical derivative–total horizontal derivative method(NVDR-THDR)and the minimum curvature potential field separation *** Moho depth and crustal thickness were inverted using the rapid inversion method for a double-interface model with depth *** on these results,the crust structure features in the KPR mid-southern section,and the“triangular”structure geological significance where the KPR and Central Basin Rift(CBR)of the WPB intersect are *** KPR crustal thickness is approximately 6–16 km,with a distinct discontinuity that is slightly thicker than the normal oceanic *** KPR mid-southern section crust structure was divided into four segments(S1–S4)from north to south,formed by the CBR eastward extension joint action and clockwise rotation of the PVB expansion axis and the Mindanao fault zone blocking effect.

关键词： structural features satellite altimetry gravity data Kyushu-Palau Ridge Central Basin Rift faults Moho depth

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Study on System of Faults in the Gulf of Mexico and Adjacent Region based on Gravity Data

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Acta Geologica Sinica(English Edition) 2021年第1期95卷 305-318页

作者： MA Jie wang Wanyin DU Xiangdong LUO Xingang CAI Wenjie YANG Min wang dingding Institute of Gravity and Magnetic Technology School of Geological Engineering and GeomaticsKey Laboratory of Western China's Mineral Resources and Geological EngineeringMinistry of EducationChang'an UniversityXi'an 710054China CNOOC Research Institute Co. Ltd.Beijing 100028China Department of Earth Sciences Memorial University of NewfoundlandSt.John'sNL A1B3X5Canada

In the Gulf of Mexico and adjacent landmasses,faults are very complex,and their distribution is closely related to plate tectonics,ocean-land boundary,and former *** plane position of the faults can be identified by the maximum characteristic of the vertical derivative of the normalized vertical derivative of the total horizontal derivative(NVDR-THDR)of the Bouguer gravity *** apparent depth of the faults is inverted by the Bouguer gravity anomaly curvature *** on tectonic evolutionary processes and the plane distribution and apparent depth characteristics of the faults,a complete fault system for the Gulf of Mexico and adjacent areas has been established,including 102 *** apparent depths of 33 first-class faults are 16-20 km and for 69 second-class faults are 12-16 *** F_(1-2)and F_(1-3)subduction fault zones are two caused by the subduction of the Cocos Plate into the old Yucatan and Chorti landmasses;F_(1-11)and F_(1-12)fault zones extend westward to the coast of Guatemala and do not extend into the continent;F_(1-17)and F_(1-20)faults,which control the boundary of the oceanic crust,do not extend southward into the *** fault system,which radiates in a"fan-shaped"structure as a whole,unfolds to the *** of different nature and sizes are distributed in the Cocos Plate subduction zone,Continental,Gulf of Mexico,Yucatan old landmass and Caribbean Plate in NW,NNW,NS,NE and NEE *** the Gulf of Mexico region,the fault system is a comprehensive reflection of former tectonic movements,such as plate movement,drift of old landmasses and expansion of oceanic *** first-class faults control the plate and ocean-continental *** second-class faults are subordinate to the first-class faults or related to the distribution of different sedimentary layers.

关键词： structural geology tectonism gravity anomaly fault distribution and apparent depth Gulf of Mexico region

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Influence of lithospheric thickness distribution on oil and gas basins,China seas and adjacent areas

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Acta Oceanologica Sinica 2024年第4期43卷 1-14页

作者： Jing Ma Wanyin wang Hermann Zeyen Yimi Zhang Zhongsheng Li Tao He dingding wang School of Geology Engineering and Geomatics Key Laboratory of Western China’s Mineral Resources and Geological Engineering of Ministry of EducationChang’an UniversityXi’an 710054China UMR8148 GEOPS CNRS/UniversitéParis-SaclayDépartement des Sciences de la TerreBât.50491405France CNOOC Research Institute Co. Ltd.Beijing 100027China Qingdao Institute of marine geology Qingdao 266071China Department of Earth Sciences Memorial University of NewfoundlandSt.John’sNewfoundland AlB3X5Canada University of Naples Federico Ⅱ Department of Earth SciencesNaples80138Italy

The distribution of oil and gas resources is intricately connected to the underlying structure of the ***,investigating the characteristics of lithospheric thickness and its correlation with oil and gas basins is highly *** research utilizes recently enhanced geological–geophysical data,including topographic,geoid,rock layer thickness,variable rock layer density,and interface depth *** the principles of lithospheric isostasy and heat conduction,we compute the laterally varying lithospheric thickness in the China seas and adjacent *** these results,two pivotal parameters for different types of oil and gas basins were statistically analyzed:the minimum lithospheric thickness and the relative fluctuation in lithospheric thickness.A semiquantitative analysis was used to explore the connection between these parameters and the hydrocarbon abundance within the oil and gas *** study unveils distinct variations in lithospheric thickness among basins,with oil and gas rich basins exhibiting a thicker lithosphere in the superimposed basins of central China and a thinner lithosphere in the rift basins of eastern ***,the relative fluctuations in lithospheric thickness in basins demonstrate significant disparities:basins rich in oil and gas often exhibit greater thickness ***,in the offshore basins of China,a conspicuous negative linear correlation is observed between the minimum lithospheric thickness and the relative fluctuation in lithospheric *** study posits that deep-seated thermal upwelling results in lithospheric undulations and extensional thinning in oil and gas ***,sustained deep-seated heat influences sedimentary materials in basins,creating favorable conditions for oil and gas *** insights derived from this study contribute to a quantitative understanding of the intricate relationships between deep lithospheric structures and oil and gas basins.

关键词： China seas and adjacent areas lithospheric thickness oil and gas basins

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Influence of the Moho surface distribution on the oil and gas basins in China seas and adjacent areas

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Acta Oceanologica Sinica 2023年第3期42卷 167-188页

作者： Yimi Zhang Wanyin wang Linzhi Li Xingang Luo dingding wang Tao He Feifei Zhang Jing Ma Institute of Gravity and Magnetic Technology School of Geology Engineering and GeomaticsKey Laboratory of Western China’s Mineral Resources and Geological Engineering of Ministry of EducationChang’an UniversityXi’an 710054China China National Offshore Oil Corporation(CNOOC)Research Institute Co. Ltd.Beijing 100028China National Engineering Research Center of Offshore Oil and Gas Exploration Beijing 100028China Key Laboratory of Marine Geology and Environment Chinese Academy of SciencesQingdao 266071China Department of Earth Sciences Memorial University of NewfoundlandSt.John’sNewfoundland AlB3X5Canada Qingdao Institute of Marine Geology China Geological SurveyQingdao 266071China

Owing to the strategic significance of national oil and gas resources,their exploration and production must be prioritized in *** and gas resources are closely related to deep crustal structures,and Moho characteristics influence oil and gas ***,it is important to study the relationship between the variation of the Moho surface depth undulation and hydrocarbon basins for the future prediction of their *** Moho depth in the study area can be inverted using the Moho depth control information,the Moho gravity anomaly,and the variable density distribution calculated by the infinite *** on these results,the influences of Moho characteristics on petroleum basins were *** found that the Moho surface depth undulation deviation and crustal thickness undulation deviation in the hydrocarbon-rich basins are large,and the horizontal gradient deviation of the Moho surface shows a positive linear relationship with oil and gas resources in the *** oil-bearing mechanism of the Moho basin is further discussed *** Moho uplift area and the slope zone correspond to the distribution of oil and gas *** tensile stress produced by the Moho uplift can form tensile fractures or cause tensile fractures on the surface,further developing into a fault or depression basin that receives *** organic matter can become oil and natural gas under suitable chemical and structural *** the action of groundwater or other dynamic forces,oil and natural gas are gradually transported to the uplift or the buried hill in the depression zone,and oil and gas fields are formed under the condition of good *** research results can provide new insights into the relationship between deep structures and oil and gas basins as well as assist in the strategic planning of oil and gas exploration activities.

关键词： China Seas and adjacent areas Moho surface oil and gas basins

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Structural characteristics and tectonic division of the Zambezi Delta basin in the offshore East Africa:evidences from gravity and seismic data

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Acta Oceanologica Sinica 2024年第4期43卷 105-118页

作者： Guozhang Fan Wen Li Liangbo Ding Wanyin wang Hongping wang dingding wang Lin Li Hao wang Chaofeng wang Qingluan wang Ying Zhang Hangzhou Research Institute of Petroleum Geology PetroChinaHangzhou 310023China College of Geological Engineering and Geomatics Chang’an universityXi’an 710054China Key Laboratory of Marine Geology and Environment Chinese Academy of SciencesQingdao 266071China National Engineering Research Center of Offshore Oil and Gas Exploration Beijing 100028China Department of Earth Environment and Resources SciencesUniversity of Naples FedericoⅡNaples 80138Italy

The Zambezi Delta basin is a passive marginal basin located on the East African coast that has good oil and gas exploration *** to the special geological evolutionary background of the Beira High in the Zambezi Delta basin,it has a low gravity anomaly,and the existing seismic survey lines do not cover the whole basin;therefore,it is difficult to interpret the structural characteristics of the whole basin based solely on gravity or seismic *** on satellite altimetry gravity anomaly data,this study infers the distribution characteristics of faults in the Zambezi Delta basin by using the normalized vertical derivative of the total horizontal derivative(NVDR-THDR)***,constrained by seismic data,the gravity anomaly at the Moho interface is extracted by using the fast forward method of the double-interface model of the gravity anomaly,and this anomaly is then removed from the Bouguer gravity anomaly to obtain the sedimentary layer gravity *** thickness of the sedimentary strata is obtained by inversing the sedimentary basement depth of the whole ***,uplifts and depressions are divided based on a sedimentary layer thickness of 3 *** research demonstrates that the Zambezi Delta basin mainly features nearly SN-trending and NE-trending faults and that these faults exhibit east-west *** nearly SN-trending strike-slip faults controlled the sedimentary development of the basin,and the NE-trending tensile faults may have acted as migration channels for oil,gas and ***“overcompensation”effect of the Moho interface gravity anomaly on the gravity anomaly of the sedimentary layer is caused by the depression of the Moho interface beneath the Beira High,which results in a low gravity anomaly value for the Beira *** pattern of uplifts and depressions trends NE and has the structural characteristics of east-west blocks.

关键词： Zambezi Delta basin satellite altimetry gravity anomaly Beira High fault division uplift and depression pattern

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Study on the distribution characteristics of faults and their control over petroliferous basins in the China seas and its adjacent areas

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Acta Oceanologica Sinica 2023年第3期42卷 227-242页

作者： Xin’gang Luo Wanyin wang Ying Chen Zhizhao Bai dingding wang Tao He Yimi Zhang Ruiyun Ma Institute of Gravity and Magnetic Technology Key Laboratory of Western China’s Mineral Resources and Geological Engineering of Ministry of EducationSchool of Geology Engineering and GeomaticsChang’an UniversityXi’an 710054China National Engineering Research Center of Offshore Oil and Gas Exploration Beijing 100028China Key Laboratory of Marine Geology and Environment Chinese Academy of SciencesQingdao 266071China China National Offshore Oil Corporation(CNOOC)Research Institute Co. Ltd.Beijing 100028China Department of Earth Sciences Memorial University of NewfoundlandSt.John’sNewfoundland A1B3X5Canada

As one of the main controlling factors of oil and gas accumulation,faults are closely related to the distribution of oil and gas *** how faults control petroliferous basins is particularly *** this work,we investigated the plane positions of major faults in the China seas and its adjacent areas using the normalized vertical derivative of the total horizontal derivative(NVDR-THDR)of the Bouguer gravity anomaly,the fusion results of gravity and magnetic anomalies,and the residual Bouguer gravity *** apparent depths of major faults in the China seas and its adjacent areas were inverted using the Tilt-Euler method based on the Bouguer gravity *** results show that the strikes of the faults in the China seas and its adjacent areas are mainly NE and NW,followed by EW,and *** them,the lengths of most ultra-crustal faults are in the range of 1000–3000 km,and their apparent depths lie between 10 km and 40 *** lengths of crustal faults lie between 300 km and 1000 km,and their apparent depths are between 0 km and 20 *** to the plane positions and apparent depths of the faults,we put forward the concept of fault influence factor for the first *** on this factor,the key areas for oil and gas exploration were found as follows:the east of South North China Basin in the intracontinental rift basins;the southeast region of East China Sea Shelf Basin,the Taixinan and Qiongdongnan basins in the continental margin rift basins;Zhongjiannan Basin in the strike-slip pull-apart basins;the Liyue,Beikang,and the Nanweixi basins in the rifted continental *** work provides valuable insights into oil and gas exploration,mineral resource exploration,and deep geological structure research in the China seas and its adjacent areas.

关键词： China seas gravity and magnetic anomalies plane positions of faults apparent depths of faults oil and gas basins

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观念创新与符号交往的经济学

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社会学研究 2001年第1期16卷 26-37页

作者：汪丁丁北京大学中国经济研究中心!浙江大学经济学院经济学教授

The theories of communicative behavior (by ***),performative individuation (by ***) and symbolic interaction (by say,***),from sociology and social philosophy are taken in this paper as paving a foundation for an economic model of “idea innovation”.That is the process wherein people interact with ideas/concepts within similar situation/problem solving,and the process if being able to reach an equilibrium results in a group “consensus” on the subject,which consensus then calls for a collective action by the organization/***,there are only a certain conditions under which the equilibria will *** paper proposes a set of hypoteses for the existence of the aforementioned interactive equilibria.

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行为社会科学的三组特征事实

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学术月刊 2017年第8期49卷 5-17页

作者：汪丁丁北京大学国家发展研究院瑞意高等研究所首席研究员北京100871

晚近二十年逐渐清晰的社会科学在未来二十年可能发生的范式变迁,姑且用我理解的"行为社会科学"来表示,它承接更早时期的演化社会科学思路。康德时代社会哲学的两项核心原则:基于"主体性"的自由观念以及基于"主体间性"的等度自由观念;当... 详细信息

晚近二十年逐渐清晰的社会科学在未来二十年可能发生的范式变迁,姑且用我理解的"行为社会科学"来表示,它承接更早时期的演化社会科学思路。康德时代社会哲学的两项核心原则:基于"主体性"的自由观念以及基于"主体间性"的等度自由观念;当代社会科学的三项核心观念:幸福感(灵魂的持久好感)、创造性(个体的和群体的)、和谐(人与自然的、人与人的、内心的),也被用来想象和预测任一文明可能达到的境界。借助这篇文章,与上列核心观念密切相关,我提供关于晚近文献的一个理解框架。或许,这一理解框架也可指导未来二十年行为社会科学的具体研究。

关键词：行为社会科学演化特征事实

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语言的经济学分析

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社会学研究 2001年第6期16卷 86-95页

作者：汪丁丁北京大学中国经济研究中心浙江大学经济学院经济学教授

This article proposes a framework of rational behavior in language learning,which should be understood both from an evolutionary point of view including genetic and cultural factors and from a socially interactive point of view including rational choice made by the learner and rational influence by the power\|structure built in learning *** economic model of language learning focuses on rational choice of the learner,given as parameters of all other factors aforementioned,resulting in a four\|dimensional space of difficulty\|measurement in language learning with the points nearest to the origin representing the words’pragmatistic easiness to the learner whose rational choice finally stops the learning process within a bounded area in the 4\|D *** individuals with different life\|histories and environmental structures therefore end in different areas in the 4\|D space,and showing different aspects as well as degrees of rationality (the so\|called Multiple lntelligence for example).No matter how formal the economic model of language learning can be,it cannot model all characteristics of language activities in social interaction,just as no model can represent a complete individual human life.

关键词：人际交往均衡状态语言经济学儿童发育符号交往经济学分析语言习得语言获得芝加哥学派

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