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Main Structural Styles and Deformation Mechanisms in the Northern Sichuan Basin,Southern China

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Acta Geologica Sinica(English Edition) 2008年第3期82卷 543-553页

作者： tang liangjie GUO Tonglou JIN Wenzheng yu yixin LI Rufeng State Key Laboratory of Petroleum Resource and Prospecting Beijing 102249 China Basin and Reservoir Research Center China University of Petroleum Beijing 102249 China Key Laboratory for Hydrocarbon Accumulation Mechanism Ministry of Education Beijing 102249 China Southern Exploration and Development Division Company SINOPEC Chengdu 610041 Sichuan China

The Triassic Jialingjiang Formation and Leikoupo Formation are characterized by thick salt layers. Three tectono-stratigraphic sequences can be identified according to detachment layers of Lower-Middle Triassic salt beds in the northern Sichuan Basin, i.e. the sub-salt sequence composed of Sinian to the Lower Triassic Feixianguan Formation, the salt sequence of the Lower Triassic Jialingjiang Formation and Mid-Triassic Leikoupou Formation, and the supra-salt sequence composed of continental clastics of the Upper-Triassic Xujiahe Formation, Jurassic and Cretaceous. A series of specific structural styles, such as intensively deformed belt of basement-involved imbricated thrust belt, basement-involved and salt-detached superimposed deformed belt, buried salt-related detached belt, duplex, piling triangle zone and pop-up, developed in the northern Sichuan Basin. The relatively thin salt beds, associated with the structural deformation of the northern Sichuan Basin, might act as a large decollement layer. The deformation mechanisms in the northern Sichuan Basin included regional compression and shortening, plastic flow and detachment, tectonic upwelling and erosion, gravitational sliding and spreading. The source rocks in the northern Sichuan Basin are strata underlying the salt layer, such as the Cambrian, Silurian and Permian. The structural deformation related to the Triassic salt controlled the styles of traps for hydrocarbon. The formation and development of hydrocarbon traps in the northern Sichuan Basin might have a bearing upon the Lower-Middle Triassic salt sequences which were favorable to the hydrocarbon accumulation and preservation. The salt layers in the Lower-Middle Triassic formed the main cap rocks and are favorable for the accumulation and preservation of hydrocarbon.

关键词： structural style deformation mechanism detachment layer salt-related strucrure hydrocarbon accumulation northern Sichuan Basin

Tectonic and Hydrocarbon Accumulation Elements Characteristics of the Tethyan Realm in South China

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Acta Geologica Sinica(English Edition) 2009年第6期83卷 1214-1223页

作者： yu yixin tang liangjie YIN Jinyin DONG Li WANG Pengwan ZHOU Yan State Key Laboratory of Petroleum Resource and Prospecting China University of Petroleum Beijing 102249 China Basin and Reservoir Research Center China University of Petroleum Beijing 102249 China Institute of Petroleum Exploration and Development SINOPEC Beijing 100083 China Hangzhou Research Institute of Petroleum Geology PetroChina Hangzhou Zhejiang 310023 China

The evolution of the global Tethys Sea can be classified into three stages, Proto-Tethys, Paleo-Tethys and Neo-Tethys. The Tethyan realm has distinctive features of zonations and segmentations along north-south and east-west, respectively, and has variable richness in oil and gas. The petroleum geological conditions of Tethys are complicated, partly represented by multi-layer of source and seal rocks, and reservoirs. The hydrocarbon accumulation elements and periods of the Tethyan realm show gradually younger from west to east and north to south. South China is located in the north belt and Yangtze segment of the Tethyan realm, and its polycyclic tectonic movements were governed by the Tethyan and Pacific realms. The blocks in South China rotated clockwise and counter-clockwise during their drift northward from Gondwana. The belts and segmentations of Tethys in South China are also clear, with six tectonic belts including： Chuxiong-Sichuan; middle Guizhou-Hunan-Hubei; lower Yangtze; Xuefeng-Jiangnan; Guangxi-Hunan-Jiangxi; and Cathaysia. Numerous faults, including compressional, compressional-shear, extensional, extensional-shear and shear are well developed in South China. The fault strikes are mainly NE, NW and NS, in which the NE is the dominant direction. Lower, middle and upper hydrocarbon assemblages, respectively corresponding to Proto-, Paleo- and Neo-Tethys, formed in the Tethyan realm of South China with the lower and middle having excellent hydrocarbon accumulation conditions. An integrated analysis of tectonic evolution, superimposed deformation and later hydrocarbon preservation shows that during the Neo-Tethyan stage in South China, continental sediments were deposited and experienced intense tectonic deformation, which had resulted in different hydrocarbon pool-forming features from those of the Neo-Tethyan realm.

关键词： Tethys tectonic evolution hydrocarbon accumulation elements hydrocarbon assemblages South China

Thick-skinned Contractional Salt Structures in the Kuqa Depression,the Northern Tarim Basin:Constraints from Physical Experiments

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Acta Geologica Sinica(English Edition) 2008年第2期82卷 327-333页

作者： yu yixin tang liangjie YANG Wenjing JIN Wenzheng PENG Gengxin LEI Ganglin State Key Laboratory of Petroleum Resource and Prospecting China University of Petroleum Beijing 102249 Basin ＆ Reservoir Research Center China University of Petroleum Beijing 102249 Research Institute of Tarim Oilfield Korla Xinjiang 840000

Thick-skinned contractional salt structures are widely developed in the western Kuqa depression, northern Tarim basin. To understand the mechanisms that govern the development of these structures, physical experiments are conducted and the results show that they are largely governed by the activities of basement faults and the forming of paleo-uplifts and basement slopes. The model materials in this study are dry sand, vaseline and plasticene （or hard foam）, simulating the suprasalt, salt, and subsalt layers respectively. The experiments show that, due to the activities of basement faults and the forming of the paleo-uplifts, salt bodies usually accumulate and thicken significantly on the middle top of the paleo-uplifts which are constrained by the pre-exiting boundary faults. The development of large-scale thrust faults and salt nappes is favored by the basement slops with larger dips. The experiments also conclude that differential structural deformation could occur between the subsalt and suprasalt layers because of the presence of salt layers. Their geometries and the locations of structural highs are different, despite of the great similarities in the uplifted areas. The pierced salt diapir is not observed in the experiments, which indicates that the contractional shortening does not effectively accelerate the development of the salt diapir.

关键词： thick-skinned contraction basement structures salt structures physical modeling Kuqa depression

Tectonic Evolution of the Middle Frontal Area of the Longmen Mountain Thrust Belt,Western Sichuan Basin,China

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Acta Geologica Sinica(English Edition) 2009年第1期83卷 92-102页

作者： JIN Wenzheng tang liangjie YANG Keming WAN Guimei Lü Zhizhou yu yixin Basin and Reservoir Research Center China University of Petroleum Beijing 102249 China State Key Laboratory of Petroleum Resource and Prospecting Beijing 102249 China Southwest Branch Company SINOPEC Chengdu 610081 China

By analyzing the balanced cross sections and subsidence history of the Longmen Mountain thrust belt, China, we concluded that it had experienced five tectonic stages：（1） the formation stage （T3x） of the miniature of Longmen Mountain, early Indosinian movement, and Anxian tectonic movement created the Longmen Mountain; （2） the stable tectonic stage （J1） where weaker tectonic movement resulted in the Longmen Mountain thrust belt being slightly uplifted and slightly subsiding the foreland basin; （3） the intense tectonic stage （J2-3）, namely the early Yanshan movement; （4） continuous tectonic movement （K-E）, namely the late Yanshan movement and early Himalayan movement; and （5） the formation of Longmen Mountain （N-Q）, namely the late Himalayan movement. During those tectonic deformation stages, the Anxian movement and Himalayan movement played important roles in the Longmen Mountain＇s formation. The Himalayan movement affected Longmen Mountain the most; the strata thrust intensively and were eroded severely. There are some klippes in the middle part of the Longmen Mountain thrust belt because a few nappes were pushed southeastward in later tectonic deformation.

关键词： balanced cross section shortening rate subsidence history Longmen Mountain thrust belt,Sichuan basin

Differential Tectonic Deformation of the Longmen Mountain Thrust Belt,Western Sichuan Basin,China

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Acta Geologica Sinica(English Edition) 2009年第1期83卷 158-169页

作者： tang liangjie YANG Keming JIN Wenzheng WAN Guimei LüZhizhou yu yixin State Key Laboratory of Petroleum Resource and Prospecting Beijing 102249 China Key Laboratory for Hydrocarbon Accumulation Mechanism China University of Petroleum Ministry of Education Beijing 102249 China Basin and Reservoir Research Center China University of Petroleum Beijing 102249 China Southwest Branch Company SINOPEC Chengdu Sichuan 610081 China

Field investigation and seismic section explanation showed that the Longmen Mountain Thrust Belt has obvious differential deformation： zonation, segmentation and stratification. Zonation means that, from NW to NE, the Longmen Mountain Thrust Belt can be divided into the Songpan- Garz~ Tectonic Belt, ductile deformation belt, base involved thrust belt, frontal fold-thrust belt, and foreland depression. Segmentation means that it can be divided into five segments from north to south： the northern segment, the Anxian Transfer Zone, the center segment, the Guanxian Transfer Zone and the southern segment. Stratification means that the detachment layers partition the structural styles in profile. The detachment layers in the Longmen Mountain Thrust Belt can be classified into three categories： the deep-level detachment layers, including the crust-mantle system detachment layer, intracrustal detachment layer, and Presinian system basal detachment layer; the middle-level detachment layers, including Cambrian-Ordovician detachment layer, Silurian detachment layer, etc.; and shallow-level detachment layers, including Upper Triassic Xujiahe Formation detachment layer and the Jurassic detachment layers. The multi-level detachment layers have a very important effect on the shaping and evolution of Longmen Mountain Thrust Belt.

关键词： differential deformation detachment layer segmentation stratification transfer zone,zonation Longmen Mountain Thrust Belt

Calculation of Depth to Detachment and Its Significance in the Kuqa Depression

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Petroleum Science 2006年第2期3卷 34-38页

作者： yu yixin tang liangjie Yin Jinyin Wang Qinghua Yang Wenjing Peng Gengxin Key Laboratory of Education Ministry for Hydrocarbon Accumulation Mechanism China University of Petroleum Beijing 102249 China Basin ＆ Reservoir Research Center China University of Petroleum Beijing 102249 China Institute of Petroleum Exploration and Development SINOPEC Beijing 100083 China Research Institute of Tarim Oilfield Korla Xinjiang 840000 China

The depth to detachment level is a critical factor affecting the quality of structural modeling in fold and thrust belts. There are several detachment levels developed in the Kuqa depression. Based on the excess-area diagram, this paper concerns mainly the calculation of the depth to detachment in the Kuqa depression. The result demonstrates that the detachment levels are situated in different strata in varying zones, such as the Paleogene Kugeliemu Formation, the Paleozoic and the crystalline basement. The calculated depth to detachment level is very helpful for testing whether a structural interpretation is reasonable and for defining the depth of deeper detachment levels which were not discerned in seismic profiles.

关键词： Detachment excess area structural modeling Kuqa depression

Wave coupling between the Tianshan orogen and the deformations in its south and north foreland basins in Cenozoic

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Science China Earth Sciences 2008年第S2期51卷 61-69页

作者： chen ShuPing1,2,tang liangjie & yu yixin1,2 1 State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum,Beijing 102249,China 2 Department of Geoscience,China University of Petroleum,Beijing 102249,China China Univ Petr State Key Lab Petr Resource & Prospecting Beijing 102249 Peoples R China China Univ Petr Dept Geosci Beijing 102249 Peoples R China

Attention has been paid to the deformations in the south and north foreland basins of the Tianshan Mountains and their relations to the tectonic movements of the mountains. Based on the seismic data interpretation and field work,the tectonic features,tectonic styles,controlling factors of deformation,deformation time,and their relationships in the three tectonic units were comparably studied. The Ce-nozoic deformations in the two foreland basins were characterized by zonation from south to north,segmentation from west to east,and layering from deep to shallow. The tectonic styles are compres-sive ones,including both basement-involved and cover-detaching. The two foreland basins underwent several times of deformation in Cenozoic and the deformations were transmitted from the Tianshan orogen to the inner basin. The deformation dynamics of the south and north foreland basins of the Tianshan Mountains can be represented by dynamics of orogenic wedges. In terms of the deformations of the wedges with wave-like features,the concept of a wave orogenic wedge was put forward,and a double wave orogenic wedge model was established.

关键词： Tianshan orogen basin-mountain coupling tectonics wave orogenic wedge

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郯庐断裂带在渤海海域渤东地区的构造特征

石油学报 2009年第3期30卷 342-346页

作者：万桂梅汤良杰周心怀余一欣陈绪云中国石油大学盆地与油藏研究中心北京102249 中国石油大学油气资源与探测国家重点实验室北京102249 中海石油(中国)有限公司天津分公司天津300452

为了分析郯庐断裂带对渤海海域渤东地区的构造特征、构造演化及油气成藏的控制作用,解释了5条地震剖面,并对其中一条剖面做了平衡恢复。研究结果表明,郯庐断裂在渤东地区表现为3个分支,剖面上发育明显的负花状构造、具有走滑性质的正断... 详细信息

为了分析郯庐断裂带对渤海海域渤东地区的构造特征、构造演化及油气成藏的控制作用,解释了5条地震剖面,并对其中一条剖面做了平衡恢复。研究结果表明,郯庐断裂在渤东地区表现为3个分支,剖面上发育明显的负花状构造、具有走滑性质的正断层、滚动背斜、垒堑构造、断阶构造等,还可见海豚效应现象。平面上深部走滑断层延伸较远,浅层形成大量的雁列式正断层。郯庐断裂古近纪主要以伸展活动为主,且以渐新世东营组沉积期伸展活动最强,上新世—第四纪以走滑活动为主。因此,渤东地区断裂具有分层差异变形特征,基本上可以分为两套断层系统:①古近系及其下部的伸展断层系统;②新近系—第四系的走滑断层系统。郯庐断裂的晚期强烈活动促使了油气的晚期成藏。

关键词：渤东地区渤海海域郯庐断裂带构造样式构造演化

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塔里木盆地塔中隆起盐相关断裂发育特征

地质学报 2011年第2期85卷 179-184页

作者：余一欣黄太柱汤良杰陈绪云中国石油大学油气资源与探测国家重点实验室北京102249 中国石油大学盆地与油藏研究中心北京102249 中国石油化工股份有限公司西北分公司乌鲁木齐830011

根据地震资料解释成果,结合中、下寒武统含盐层系展布特征,分析塔里木盆地塔中隆起主要断裂带变形特征及其形成机理。塔中隆起主要断裂带表现为上陡下缓,往深部在中、下寒武统含盐层系顶面或内部发生滑脱,滑脱距离在不同地区有所差异,... 详细信息

根据地震资料解释成果,结合中、下寒武统含盐层系展布特征,分析塔里木盆地塔中隆起主要断裂带变形特征及其形成机理。塔中隆起主要断裂带表现为上陡下缓,往深部在中、下寒武统含盐层系顶面或内部发生滑脱,滑脱距离在不同地区有所差异,具有典型的"盐相关断裂"特征。塔中地区断裂带的形成演化主要受区域构造应力场、基底先存断裂和中、下寒武统含盐层系联合控制,其中区域构造应力场为断裂形成提供了动力来源,中、下寒武统含盐层系的厚度影响了断裂带的发育方式,而基底先存断裂则决定了断裂带的发育位置。

关键词：盐相关断裂滑脱作用含盐层系基底先存断裂塔中隆起