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| 1 | Tectonics of South China Continent and its implications显示文摘This paper aims at exploring the tectonic characteristics of the South China Continent(SCC)and extracting the universal tectonic rules from these characteristics,to help enrich the plate tectonic theory and better understand the continental dynamic system.For this purpose,here we conduct a multi-disciplinary investigation and combine it with the previous studies to reassess the tectonics and evolution of SCC and propose that the tectonic framework of the continent comprises two blocks,three types of tectonic units,four deformation systems,and four evolutionary stages with distinctive mechanism and tectonic characteristics since the Neoproterozoic.The four evolutionary stages are:(1)The amalgamation and break-up of the Neoproterozoic plates,typically the intracontinental rifting.(2)The early Paleozoic and Mesozoic intracontinental orogeny confined by plate tectonics,forming two composite tectonic domains.(3)The parallel operation of the Yangtze cratonization and intracontinental orogeny,and multi-phase reactivation of the Yangtze craton.(4)The association and differentiation evolution of plate tectonics and intracontinental tectonics,and the dynamic characteristics under the Meso-Cenozoic modern global plate tectonic regime. | ZHANG GuoWei GUO AnLin WANG YueJun LI SanZhong DONG YunPeng LIU ShaoFeng HE DengFa CHENG ShunYou LU RuKui YAO AnPing | 2013 | Science China Earth Sciences2013，56，11： | 88 |
| 2 | Basic Types and Structural Characteristics of Uplifts:An Overview of Sedimentary Basins in China显示文摘uplift 是它是的外壳的一个积极结构的单位为由于它的丰富的结构的现象的大陆人动力学的一扇重要窗户例如差错,阶层的褶层,不顺从和剥光。同时,存储象油,天然气,煤和铀一样的重要矿物质是地方。在中国的巨大、大规模的油和煤气的地例如 Daqing 油矿, Lunnan-Tahe 油矿, 3 油矿, Puguang 煤气的地和 Jingbian 气体回答的 Penglai 19,在主要上被开发高举。因此,它为油和煤气的探索并且为地质的学习是主要目标。uplift 能是任何一个一个地下室高举,或一个人仅仅在沉积盖子发展了。扩展,压缩和扳手或他们的联合力量可以产生高举。高举的开发进程例如形成,开发,缩小并且破坏,能作为高举的周期被拿。巨大的前寒武纪的 cratons 上的 uplifts 与更少的广泛的结构的变丑相称大。中型、小型的 cratons 或 neo-cratons 上的 uplifts 与强壮的结构的变丑和复杂地质的结构在各种各样的形状被形成。由于在 geodynamic 环境的变化,高举经验一多级式或多周期发展过程。它的地质的结构在多结构的层的重叠被描绘。基于地下室性质,机械地层学和发展顺序,高举能被划分成三种基本类型—继任,重叠和破坏。继任类型被细分进维持的类型和持续类型。重叠类型能被细分进合成背斜的类型,埋葬山的 draped 类型,指责高举类型和迁居根据不同规模和附加式样打字在不同周期高举。破坏类型被细分进倾斜的类型和否定转换类型。发展历史高举,他们沉积和液体上的控制效果与对方相当不同,尽管有不同结构的类型的 uplifts 存储重要矿物质。高举并且他们的斜坡是为油和煤气的累积的主要区域。他们通常与多重生产形成和油和煤气的水库的各种各样的类型成为合成的油和煤气的累积地区(带) 。 | HE Dengfa LI Desheng WU Xiaozhi WEN Zhu | 2009 | Acta Geologica Sinica(English Edition)2009，83，2： | 20 |
| 3 | Characteristics of China’s oil and gas pool formation in latest geological history显示文摘The structural activities took place extensively in the Asia continent during the Cenozoic era owing to the strong continent-to-continent collision and continuous compression between the India Plate and the Eurasia Plate. Huang Jiqing called such structural activities Himalayan movement. China’s sedimentary basins developed and took shape mainly during the Himalayan movement period. It is also the main period for formation and development of the oil and gas reservoirs. Of 366 large and medium-sized oil and gas fields currently found in China, 212 reservoirs were formed in the Neo- gene-Quaternary period. The proportion is as high as 68.2%. The oil and gas migration and accumu- lation in the latest geological period, which were controlled by the times, properties, styles and strength of the Himalayan movement, took place mainly in eight regions, such as the low uplift area of Bohai Sea, the onshore faulted sag area of Bohai Bay, anticlinorium zone in Daqing, the foreland fold-and-thrust belt in West China, the tilted structural zone in West China, the cratonic palaeohigh in the Tarim Basin, the zone of fault and fold belt in the East Sichuan Basin, and the biological gas zone in the East Qaidam Basin. The oil and gas pool formations in those regions have their own charac- teristics. With the great potential and broad prospect, those regions are the main exploration areas in China in the future. | JIA Chengzao HE Dengfa SHI Xin YANG Geng ZHANG Chaojun | 2006 | Science China Earth Sciences2006，49，9： | 16 |
| 4 | Tectonic types and evolution of Ordovician proto-type basins in the Tarim region显示文摘The Ordovician system is an important target for exploration in the Tarim Basin. Restoration of the Ordovician tectono-depositional environment is a key basis for the study of the structural development history in Tarim block and the prediction of the favorable Ordovician reservoir belts (zones). Based on the surrounding tectonic settings, the litho-facies and sedimentary fill, the palaeo-geography, palaeoclimate and palaeo-ecology, and the structural deformation and magmatic eruptions, in this paper we combine the sedimentary fill in the basin with the development of the surrounding orogenic belts and re-build the proto-type basins of the different Ordovician periods. During the Ordovician period, the Tarim region was characterized by the composite of the interior cratonic depression with the peripheral cratonic depression. The interior cratonic depression in the central and western parts is mainly the depositional area of the platform facies while the peripheral cratonic depression in the eastern part is mainly the zone of deepwater basin facies, with the slope acting as the transition belt between them. During the Late Ordovician period, the closure of the Northern Kunlun Ocean and destruction of the trencharc-basin system in the Altyn Tagh region put the southern part of the Tarim block under compression and uplifting and turned the central and western parts of the carbonate platform into the mixed depositional continental shelf. The eastern region of the basin had the over-compensated flysch sedimentation with huge thickness, marking the drastic turn of the basin nature. The basin tectonic framework turned to the south-north differentiation of the Silurian period from the east-west differentiation of the Ordovician period. | HE DengFa ZHOU XinYuan ZHANG ChaoJun YANG XiaoFa | 2007 | Chinese Science Bulletin2007，52，A01： | 15 |
| 5 | Dynamics for multistage pool formation of Lunnan low uplift in Tarim Basin显示文摘Lunnan area in the Tarim Basin has become animportant onshore oil production base in China. Formationof the oil and gas pools in the low uplift of Lunnan has ex-perienced a comparatively complex process of dynamics.Based on the hydrocarbon generation period of source rocks,the formation period of cap rocks and traps, the analysis oforganic inclusion and the analysis of bitumen in the reservoir,this paper draws the conclusion that the low uplift area ofLunnan has experienced three pool formation periods: thePermian period, the Cretaceous-Early Tertiary period andthe Late Tertiary-Quaternary period and two oil and gasreservoir adjustment periods: the Late Permian period andthe Late Tertiary-Quaternary period. The comprehensivestudy indicates that the large-scale Ordovician buried hill,formed in Early Hercynian, became the reservoir during thePermian period, because the Cambrian-Lower Ordovicianoil was discharged laterally into the reservoir along the topof the Ordovician weathering crust from south to north. Thereservoir experienced a complicated process-reconstruc-tion in the end of Permian, adjustment in Cretaceous-EarlyTertiary and re-discharging process in Late Tertiary-Qua-ternary, leading to the early original heavy oil reservoir ofmarine facies and the late original light oil reservoir and gaspool. Carboniferous, Triassic and Jurassic oil and gas reser-voirs result from upward adjustment and re-distribution ofOrdovician oil and gas reservoirs. Of those results, the for-mation of Triassic-Jurassic oil and gas pools came under theinfluence of the northward-tilting structure. The oil and gassourcing from the different hydrocarbon source rock inter-vals vertically migrated into the base unconformity of Trias-sic system. Then the oil and gas migrated laterally fromnorth to south and accumulated into the reservoir. | HE Dengfa JIA Chengzao LIU Shaobo PAN Wenqing WANG Shejiao | 2002 | Chinese Science Bulletin2002，47，S1： | 11 |
| 6 | 3-D geologic architecture of Xiong'an New Area: Constraints from seismic reflection data显示文摘Studying the geologic architecture of the Xiong'an New Area will provide important basis for the evaluation of crustal stability, urban planning and infrastructural projects in this region, and it is also of great significance in exploring the occurrence of oil and gas, geothermal, hot dry rock and other resources. The stratigraphic system of the study area is established by using latest high quality seismic reflection and deep borehole data. Characteristics of the major faults developed in the study area are finely depicted with the method of structural analysis. Tectonic evolution of Xiong'an and adjacent areas is reconstructed by using balanced geological cross-section technique. The tectonic activity of the study area is discussed on the basis of the development of secondary faults and the distribution of active earthquakes across the region. This study demonstrates that Xiong'an New Area is located at the transfer zone of the central and northern Jizhong Depression. There are three regional unconformities developed in this area, by which four structural layers are sub-divided. Controlled by the Taihang Mountain piedmont fault, the Daxing fault, the Rongcheng fault and the Niudong fault, the structural framework of the study area is characterized by intervening highs with sags. This structural pattern has an important controlling over the reservoir characteristics, hydrocarbon accumulation and the distribution of geothermal resources and hot dry rock within this region. Rifting in this area began in the early Paleogene, exhibiting typical episodic character and became inactive in Neogene. The development feature of secondary faults along with the distribution of active earthquakes indicate that Xiong'an New Area has been in a relatively stable tectonic setting since the Neogene, while the Baxian Sag and other structural units to the east of it have obviously been in a rather active environment. | Dengfa HE Shuaiqiang SHAN Yuying ZHANG Renqi LU Ruifeng ZHANG Yongqian CUI | 2018 | Science China Earth Sciences2018，61，8： | 10 |
| 7 | Kinematics of syn-tectonic unconformities and implications for the tectonic evolution of the Hala'alat Mountains at the northwestern margin of the Junggar Basin,Central Asian Orogenic Belt显示文摘The Hala'alat Mountains are located at the transition between the West Junggar and the Junggar Basin.In this area,rocks are Carboniferous,with younger strata above them that have been identified through well data and high-resolution 3D seismic profiles.Among these strata,seven unconformities are observed and distributed at the bases of:the Permian Jiamuhe Formation,the Permian Fengcheng Formation,the Triassic Baikouquan Formation,the Jurassic Badaowan Formation,the Jurassic Xishanyao Formation,the Cretaceous Tugulu Group and the Paleogene.On the basis of balanced sections,these unconformities are determined to have been formed by erosion of uplifts or rotated fault blocks primarily during the Mesozoic and Cenozoic.In conjunction with the currently understood tectonic background of the surrounding areas,the following conclusions are proposed:the unconformities at the bases of the Permian Jiamuhe and Fengcheng formations are most likely related to the subduction and closure of the Junggar Ocean during the late Carboniferous-early Permian;the unconformities at the bases of the Triassic Baikouquan and Jurassic Badaowan formations are closely related to the late Permian-Triassic Durbut sinistral slip fault;the unconformities at the bases of the middle Jurassic Xishanyao Formation and Cretaceous Tugulu Group may be related to reactivation of the Durbut dextral slip fault in the late Jurassic-early Cretaceous,and the unconformity that gives rise to the widely observed absence of the upper Cretaceous in the northern Junggar Basin may be closely related to large scale uplift.All of these geological phenomena indicate that the West Junggar was not calm in the Mesozoic and Cenozoic and that it experienced at least four periods of tectonic movement. | Delong Ma Dengfa He Di Li Jieyun Tang Zheng Liu | 2015 | Geoscience Frontiers2015，6，2： | 9 |
| 8 | Large-scale thrusting at the northern Junggar Basin since Cretaceous and its implications for the rejuvenation of the Central Asian Orogenic Belt显示文摘The Wulungu Depression is the northernmost first-order tectonic unit in the Junggar Basin.It can be divided into three sub-units:the Hongyan step-fault zone,the Suosuoquan sag and the Wulungu south slope.The Cenozoic strata in the basin are intact and Mesozoic—Cenozoic deformation can be observed in the Wulungu step-fault zone,so this is an ideal place to study the Mesozoic—Cenozoic deformation.By integration of fault-related folding theories,regional geology and drilling data,the strata of the Cretaceous—Paleogene systems are divided into small layers which are selected as the subjects of this research.The combination of the developing unconformity with existing growth strata makes it conceivable that faults on the step-fault zone have experienced different degrees of reactivation of movement since the Cretaceous.Evolutionary analyses of the small layers using 2D-Move software showed certain differences in the reactivation of different segments of the Wulungu Depression such as the timing of reactivation of thrusting,for which the reactivity time of the eastern segment was late compared with those of the western and middle segments.In addition the resurrection strength was similarly slightly different,with the shortening rate being higher in the western segment than in the other segments.Moreover,the thrust fault mechanism is basement-involved combined with triangle shear fold,for which a forward evolution model was proposed. | Jieyun Tang Dengfa He Di Li Delong Ma | 2015 | Geoscience Frontiers2015，6，2： | 8 |
| 9 | Geochronology and Sr-Nd-Hf isotopic composition of the granites,enclaves,and dikes in the Karamay area,NW China:Insights into late Carboniferous crustal growth of West Junggar显示文摘New whole-rock major and trace elements,and zircon U-Pb and Hf-Nd isotope compositions are reported for the Karamay dikes,enclaves,and host granites in the West Junggar,NW China.Zircon U-Pb dating of the Karamay pluton yields an age of 300.7 ± 2.3 Ma for the enclave and 300.0 ± 2.6 Ma for the host granite,which was intruded by dike with an age of 298 Ma.The host granites exhibit relatively low SiO_2 contents and A/CNK and Ga/Al ratios,low initial ^(87)Sr/^(86)Sr ratios(0.703421—0.703526) and positive εHf(t)(5.5—14.1) and εNd(t)(7.3—8.1) values with a young model age,suggesting that they are I-type granites and were mainly derived from a juvenile lower crustal source.The enclaves and dikes belong to an andesitic calc-alkaline series and have high MgO concentrations at low silica content and positive εNf(t)(7.6-13.2,14.2-14.9) and εNd(t)(6.8-8.3,~6.9) values.They are enriched in LILEs(Rb,Ba and U) and LREE and depleted in HFSEs(Nb and Ta) with insignificant negative Eu anomalies,indicating that the melts were derived from an enriched lithospheric mantle modified by subducted oceanic crust-derived melts and minor fluids,followed by fractional crystallization.The Karamay host granites and enclaves are of mixed origin and are most probably formed by the interaction between the lower crust- and lithospheric mantle-derived magmas,and were intruded by the unmixed dikes subsequently.The upwelling mantle through a slab window in an island arc environment might have triggered partial melting of the lithospheric mantle and its subsequent interaction with the granitic magma,further suggesting that the ridge subduction played an important role in the crustal growth of West Junggar. | Di Li Dengfa He Chun Fan | 2015 | Geoscience Frontiers2015，6，2： | 8 |
| 10 | The Seismogenic Structure of the 2010 Suining Ms 5.0 Earthquake and its Geometry,Kinematics and Dynamics Analysis显示文摘在 2010 年 1 月, Suining Ms5.0 地震发生在中央四川盆,与在 Moxi-Longnvsi 结构的带和 10 km 的焦点的深度的震中。在这个区域基于地震侧面的结构的解释,我们认出了在 910 km 的深度位于 Suining 区域的 Presinian 地下室的一个地区性的分开差错,转移它从 NW 滑倒到 SE 取向。从 NW 滑动到 SE,并且经历了几的这个分开差错砍并且弯曲,它引起了地下室被卷在并且覆盖阶层褶层变丑。它在 Moxi 区域形成了差错拐弯褶层与一近似 4 km 滑倒。相应地, Moxi 背斜的形成与分开差错有关。与地震分开差错的斜面上的震中,有一个新观点, Suining 地震被这个地下室分开差错的复活引起。自从迟了的侏罗记时期,在地区性的构造应力的影响下面,分开差错从 Longmen 山( LMS )戳带把它的slip 转移了到四川盆的内地,并且最后到西南 Huayingshan ( HYS )的山麓地区,它显示 HYS 可能是 LMS 戳带的最后的前面区域。 | LU Renqi HE Dengfa JOHN Suppe MA Yongsheng GUAN Shuwei SUN Yanpeng GAO Jinwei | 2011 | Acta Geologica Sinica(English Edition)2011，85，6： | 5 |
| 11 | Discovery of cutinitic liptobiolith in northwestern China and a comparative study with Luquan Devonian coal显示文摘Devonian cutinitic liptobiolith is a special cuticle-rich coal formed during the early stage of land plant evolution. In China, this special coal has previously only been reported in the Yangtze area, with the Luquan Devonian cutinitic liptobiolith of Yunnan Province being the most well-known. Recently, this type of coal was first discovered in the Bulonggoer Sag, to the northwest of the Junggar Basin, NW Xinjiang. Its geological age is regarded as the Givetian period of the late Middle Devonian,which is equivalent to the age of the Luquan Devonian coal. The cutinitic liptobiolith from NW Xinjiang has a distinct sheet-like texture resembling a stack of paper or leaf sheets in appearance, and so it is commonly called 'paper coal' or 'leaf coal'. Ribbonlike cutinite(thick-walled type) is the most abundant maceral in the coal(>60% and up to 80%, on a mineral-free basis), followed by ribbon-like collotelinite. The NW Xinjiang and Luquan cutinitic liptobioliths share similar maceral compositions;while their coal-forming plants and depositional conditions are distinct. The NW Xinjiang cutinitic liptobiolith was deposited in a regional fluvial or flood plain condition, with lycopsids as the dominant coal-forming plants. In contrast, the Luquan cutinitic liptobiolith formed in a coastal-lagoon environment, with primitive ferns as the predominant coal-forming plants, followed by lycopsids. The saturated fractions of the NW Xinjiang and Luquan liptobioliths are mainly composed of tetracyclic diterpanes. However, the tetracyclic diterpane compositions in the NW Xinjiang cutinitic liptobiolith are distinct from those in the Luquan Devonian coal:The former is dominated by atisanes and the latter is mainly composed of phyllocladanes. Different coal-forming plants may have contributed to the distinct tetracyclic diterpane compositions. | Daofu SONG Tieguan WANG Ningning ZHONG Yuan CHEN Dengfa HE Di LI | 2021 | Science China Earth Sciences2021，64，4： | 2 |
| 12 | Geochronology,geochemistry and tectonostratigraphy of Carboniferous strata of the deepest Well Moshen-1 in the Junggar Basin,northwest China:Insights into the continental growth of Central Asia显示文摘 | He Dengfa Li Di Fan Chun | 2013 | Gondwana Research2013，24，2： | 1 |
| 13 | Outward-growth of the Tibetan Plateau during the Cenozoic: A review显示文摘 | Chengshan Wang Jingen Dai Xixi Zhao Yalin Li Stephan A. Graham Dengfa He Bo Ran Jun Meng | 2014 | Tectonophysics2014，，： | 1 |
| 14 | Characteristics of Volcanic Reservoirs and Hydrocarbon Accumulation of Carboniferous System in Junggar Basin, China显示文摘The Carboniferous volcanic reservoirs in Junggar Basin contain rich hydrocarbon resources,implying a great exploration potential,so that they have become a key replacement target for“three-dimensional exploration”.The study on the Carboniferous volcanic reservoirs and their hydrocarbon accumulation elements is significant for clarifying the orientation for exploration.In this paper,based on 37 reserves reports and 3200 reservoir test data,the Carboniferous volcanic reservoirs in Junggar Basin were discussed from the prospective of lithology and lithofacies,physical properties,reservoir types,main controls on hydrocarbon accumulation,and hydrocarbon accumulation patterns.It is found that the Carboniferous in the basin is mostly in the multi-island ocean-volcanic island arc structural-sedimentary environment,so it is geologically eligible for forming in-situ volcanic reservoirs.The volcanic rocks are:(1)mostly distributed along deep and large faults,with the lithology and lithofacies controlled by volcanic architectures;(2)dominantly lava,followed by volcaniclastic lava and volcaniclastic rock;(3)distributed in the periphery of hydrocarbon-generating sag and within the source rocks horizontally,and concentrated in the weathering crust at the top longitudinally,possibly leading to reworked weathering crust reservoir;and(4)liable to form inner reservoirs.The volcanic reservoirs can be concluded into four hydrocarbon accumulation patterns,i.e.,self-generating&self-storing in paleo-uplift and vertical migration,self-generating&self-storing in paleo-uplift and lateral migration,young-generating&old-storing in fault zone and vertical migration,and young-generating&old-storing in paleo-uplift and lateral migration.Future exploration will focus on the effective source rock development and hydrocarbon supply zones and the selfgenerating&self-storing and young-generating&old-storing patterns.The exploration prospects are determined to be the Ludong-Wucaiwan-Baijiahai slope belt and the southern slope belt of the Shaqi uplift(self-generating&self-storing pattern)in eastern Junggar,and the fault and nasal arch zone at the northwestern margin and the nasal arch zone(deep and large structure)in the Luxi area(younggenerating&old-storing pattern)in western Junggar. | Xiaozhi Wu Qiulin Guo Wei Zhang Dengfa He Xuefeng Qi Di Li | 2021 | Journal of Earth Science2021，32，4： | 1 |
| 15 | Theory of petroleum system and its application in oil and gas exploration显示文摘 | ZHAO Wenzhi HE Dengfa | 1996 | Petroleum Explorationist1996，1，2： | 1 |
| 16 | The concept of composite petroleum system and its significance显示文摘 | ZHAO Wenzhi HE Dengfa | 2000 | Petroleum Explorationist2000，5，3： | 1 |
| 17 | CarboniIi+rmts-Penuian tectonic framework and its later modifications to the area from eastern Kazakhstan to southern Altai: Insights fi'om the Zaysan- Jimunai Basin evolution 显示文摘 | DILI DENGFA HE DELONG MA et aI | 2015 | Journal of Asian Earth Sciences2015，113，： | 1 |
| 18 | Tectonostratigraphic evolution of the Carboniferous arc-re-lated basin in the East Junggar Basin,northwest China: In-sights into its link with the subduction process显示文摘 | Yang Xiaofa He Dengfa Wang Qingchen Tang Yong | 2012 | Gond-wana Research2012，22，3： | 1 |
| 19 | Kinematic evolution of fold-and-thrust belts in the Yubei-Tangbei area: Implications for tectonic events in the southern Tarim Basin显示文摘The Yubei-Tangbei area in the southern Tarim Basin is one of the best-preserved Early Paleozoic northeast-southwest trending fold-and-thrust belts within this basin.This area is crucial for the exploration of primary hydrocarbon reservoirs in northwestern China.In this study,we constructed the structural geometric morphology of the Yubei-Tangbei area using geophysical logs,drilling,and recent two-and three-dimensional(2-D and 3-D)seismic data.The Early Paleozoic fault-propagation folds,the Tangnan triangle zone,fault-detachment folds,and trishear fault-propagation folds developed with the detachment of the Middle Cambrian gypsum–salt layer.According to a detailed chronostratigraphic framework,the growth strata in the Upper Ordovician–Lower Silurian layer formed by onlapping the back limb of the asymmetric fault-propagation folds,which therefore defines the timing of deformations.The changes in kink band hinges and amplitudes in the Permian–Carboniferous and Cenozoic folding strata suggest that the evolution of the fold-and-thrust belts followed a sequential evolution process rather than a simultaneous one.Above the pre-existing Precambrian basement structure,the Yubei-Tangbei fold-and-thrust belts can be divided into four tectonic evolution stages:Late Cambrian,Late Ordovician to Early Carboniferous,Carboniferous to Permian,and Cenozoic.The northwestern-verging Cherchen Fault is part of the piedmont fold-and-thrust system of the southern Tarim foreland basin.We interpreted its strata as a breakthrough trishear fault-propagation fold that developed in three phases:Mid–Late Ordovician,Silurian to Middle Devonian,and Triassic to present.These tectonic events are responses of the Altyn-Tagh and Kunlun collisional orogenic belts and the Indian-Eurasian collision.The inherited deformation and structural modification in the southern Tarim Basin may be an indicator of the growth and evolution of peripheral orogens. | Yiqiong Zhang Dengfa He Bin Wu Huahua Gao | 2021 | Geoscience Frontiers2021，12，6： | 1 |
| 20 | Structural attributes,evolution and petroleum geological significances of the Tongnan negative structure in the central Sichuan Basin,SW China显示文摘The Tongnan secondary negative structure in central Sichuan Basin has controls and influences on the structural framework and petroleum geological conditions in the Gaoshiti-Moxi area.To clarify the controls and influences,the deformation characteristics,structural attributes and evolution process of the Tongnan negative structure were investigated through a series of qualitative and quantitative methods such as balanced profile restoration,area-depth-strain(ADS)analysis,and structural geometric forward numerical simulation,after comprehensive structural interpretation of high-precision 3D seismic data.The results are obtained in three aspects.First,above and below the P/AnP(Permian/pre-Permian)unconformity,the Tongnan negative structure demonstrates vertical differential structural deformation.It experiences two stages of structural stacking and reworking:extensional depression(from the Sinian Dengying Formation to the Permian),and compressional syncline deformation(after the Jurassic).The multi-phase trishear deformation of the preexisting deep normal faults dominated the extensional depression.The primary depression episodes occurred in the periods from the end of Late Proterozoic to the deposition of the 1st–2nd members of the Dengying Formation,and from the deposition of Lower Cambrian Longwangmiao Formation–Middle–Upper Cambrian until the Ordovician.Second,the multi-stage evolution process of the Tongnan negative structure controlled the oil and gas migration and adjustment and present-day differential gas and water distribution between the Tongnan negative structure and the Gaoshiti and Moxi-Longnüsi structural highs.Third,the Ordovician,which is limitedly distributed in the Tongnan negative structure and is truncated by the P/AnP unconformity on the top,has basic geological conditions for the formation of weathering karst carbonate reservoirs.It is a new petroleum target deserving attention. | TIAN Fanglei WU Furong HE Dengfa ZHAO Xiaohui LIU Huan ZHANG Qiaoyi LE Jinbo CHEN Jingyu LU Guo | 2023 | Petroleum Exploration and Development2023，50，5： | 0 |
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