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四川多旋回叠合盆地的形成与演化
引用本文:何登发,李德生,张国伟,赵路子,樊春,鲁人齐,文竹.四川多旋回叠合盆地的形成与演化[J].地质科学,2011,0(3):589-606.
作者姓名:何登发  李德生  张国伟  赵路子  樊春  鲁人齐  文竹
作者单位:1.中国地质大学海相储层演化与油气富集机理教育部重点实验室 北京 100083; 2.中国石油勘探开发研究院 北京 100083; 3.西北大学地质学系 西安 710069; 4.中国石油西南油气田分公司 成都 651000
基金项目:国家自然科学基金重点项目,国家油气专项,国家重点基础研究发展计划项目
摘    要:四川盆地是典型的经历了多期构造演化过程的克拉通盆地,在其多套沉积层序中富含天然气,天然气的开发利用历史悠久.近年来连续发现了普光、龙岗、合川、新场、九龙山和元坝等多个大气田.揭示四川盆地的形成演化过程,不仅为探讨克拉通盆地的成因机制奠立重要基础,而且为探索强烈构造活动环境之下油气有效聚集与保存机制提供重要线索.本文利用...

关 键 词:成盆机制  地质结构  构造旋回  叠合盆地  四川盆地
收稿时间:2011-03-28

Formation and evolution of multi-cycle superposed Sichuan Basin, China
He Dengfa,Li Desheng,Zhang Guowei,Zhao Luzi,Fan Chun,Lu Renqi,Wen Zhu.Formation and evolution of multi-cycle superposed Sichuan Basin, China[J].Chinese Journal of Geology,2011,0(3):589-606.
Authors:He Dengfa  Li Desheng  Zhang Guowei  Zhao Luzi  Fan Chun  Lu Renqi  Wen Zhu
Institution:1.Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism of the Ministry of Education|China University of Geosciences|Beijing 100083; 2.Research Institute of Petroleum Exploration and Development|Beijing 100083; 3.Department of Geology|Northwest University| Xi′an 710069; 4.PetroChina Southwest Oilfield Company|Chengdu 651000)
Abstract:The Sichuan Basin is a kind of classic cratonic basin having undergone multi stage evolution,and is rich of gas resources in the different sets of sedimentary sequences.It boasts its long history of gas development and utilization,and a number of recently discovered giant gas fields such as Puguang,Longgang,Hechuan,Xinchang,Jiulongshan,and Yuanba.To explore the processes of formation and evolution of Sichuan Basin is not only an important aspects for addressing the genetic mechanism of cratonic basins,but also a key clue for recognizing the critical conditions of oil and gas accumulation and preserve under the strongly modified tectonic settings.Considering the adjacent plate tectonic evolution,and combing the basin depositional filling with the developing of the peripheral orogenic belts,the paper takes advantage of using the newly released data on surface geology,drilling,gravitational and magnetic,and seismic profiles to address the basin evolution history and its superposed processes of Sichuan Basin and around area.The Sichuan Basin is founded upon the Middle and Upper Yangtze Craton,exhibiting characteristics of the intra continental deformation and basin development under the adjacent plate tectonic circumstances in the Phanerozoic Eon.With the Qingling Ocean to the north,which was the North Qingling Ocean in Early Paleozoic and the South Qinling Ocean in Late Paleozoic to Triassic respectively,the paleo Tethyan oceans such as the Changning Menglian Ocean,Jinshajing Mojiang Ocean,and Gantze Litang Ocean to the southwest,the Early Paleozoic Jiangnan Xuefeng rift sag to the southeast and the Late Paleozoic Longmenshan rift sag to the northwest,the Sichuan Basin and its adjacent area had undergone three stages of proto Tethyan,paleo Tethyan,and neo Tethyan evolution controlled by the opening and closing of these oceans and rift sags.Each stage includes the extension relating to the opening of oceans and the amalgamation and compression relating to the closing of oceans,giving rise to the extensional basins during the Sinian to Ordovician,Devonian to the sedimentary period of the third member of Xujiahe Formation,and Early and Middle Jurassic alternating with the compression basins during the Silurian,the sedimentary period of the fourth to sixth member of Xujiahe Formation,and the Late Jurassic to Quaternary respectively.The basin cycles had resulted in the horizontally combination and vertically superimposition of proto type basins,producing a distinct kind of geological structures called as stratified and blocked.Influenced by the multi periods of interaction between the basin and the orogenic belts,the stratified and blocked basin structure has been intensively modified,and played a great role in the oil and gas accumulation in the basin.
Keywords:Mechanism of Basin formation  Geological structure  ectonic cycle  Superimposed basin  Sichuan Basin
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