Dynamic Processes of the Paleozoic Tarim Basin and Its Significance for Hydrocarbon Accumulation——A Review and Discussion  

作　　者：李思田 任建业 邢凤存 刘占红 李红谊 陈强路 李祯 

机构地区：[1]Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education,China University of Geosciences [2]School of Energy Resources,China University of Geosciences [3]Faculty of Earth Resources,China University of Geosciences [4]Institute of Sedimentary Geology,Chengdu University of Technology [5]State Key Laboratory of Oil/Gas Reservoir Geology and Exploitation,Chengdu University of Technology [6]Wuxi Research Institute of Petroleum Geology,SINOPEC

出　　处：《Journal of Earth Science》2012年第4期381-394,共14页地球科学学刊（英文版）

基　　金：the SINOPEC for their supports and setting up the project (No. YPH08114) integrated basin and orogen dynamics for the hydrocarbon prediction in the Tarim basin;supported by the National Scienceand Technology Major Project of China(No. 2011ZX05009-001)

摘　　要：The structural framework and evolution processes of the giant superimposed Tarim basin in Paleozoic Era are controlled by three main factors： （1） features and structures of the basin basement; （2） deep mantle dynamics process （such as the Sinian rifting and the Permian plume-related magmatic activities）; （3） the powerful regional compressional or compresso-shear stress regime generated by the orogenic movement from surrounding regions. The latter of which occurring in multiple episodes is the most important factor for the Paleozoic Tarim basin evolution. Under the above tectonic background, the underlying lithosphere of the Tarim basin had been flexed, and then the upper crust was folded. The paleo-uplifts （e.g., Tabei （塔北） and Tazhong （塔中） and depressions occurred in both of the flexuraland folding processes, which are different with the models of foreland basin in stable and large cratons in the world. During the early evolution stage in Cambrian-Early Ordovician, low-relief paleo-uplifts, and open carbonate platforms formed in center area, while during the Late Ordovician compressional tectonic regime, thebelted uplifts and restricted platforms formed in the contemporaneous folding processes. Denudated stages occurred during the strong tectonic events marked by the unconformities and karstified weathered crusts formed on platforms. All the discovered giant-middle oilfields are closely related to the paleo-uplift and karstified crust evolution. There are two main types of oil reservoir： paleo-karst type and reef-bank type on the carbonate platform in paleo-uplift areas. In Permian, plume-related massive magmatic activities led to geo-temperature increase and the regional uplifting in this basin, ending the marine deposit filling sequences and starting the formation of terrestrial deposits-dominated sequences. With abundant supply from giant hydrocarbon generation depressions, the most important oil fields formed in Tabei and Tazhong areas. To reveal the multi-stage evolutioThe structural framework and evolution processes of the giant superimposed Tarim basin in Paleozoic Era are controlled by three main factors： （1） features and structures of the basin basement; （2） deep mantle dynamics process （such as the Sinian rifting and the Permian plume-related magmatic activities）; （3） the powerful regional compressional or compresso-shear stress regime generated by the orogenic movement from surrounding regions. The latter of which occurring in multiple episodes is the most important factor for the Paleozoic Tarim basin evolution. Under the above tectonic background, the underlying lithosphere of the Tarim basin had been flexed, and then the upper crust was folded. The paleo-uplifts （e.g., Tabei （塔北） and Tazhong （塔中） and depressions occurred in both of the flexuraland folding processes, which are different with the models of foreland basin in stable and large cratons in the world. During the early evolution stage in Cambrian-Early Ordovician, low-relief paleo-uplifts, and open carbonate platforms formed in center area, while during the Late Ordovician compressional tectonic regime, thebelted uplifts and restricted platforms formed in the contemporaneous folding processes. Denudated stages occurred during the strong tectonic events marked by the unconformities and karstified weathered crusts formed on platforms. All the discovered giant-middle oilfields are closely related to the paleo-uplift and karstified crust evolution. There are two main types of oil reservoir： paleo-karst type and reef-bank type on the carbonate platform in paleo-uplift areas. In Permian, plume-related massive magmatic activities led to geo-temperature increase and the regional uplifting in this basin, ending the marine deposit filling sequences and starting the formation of terrestrial deposits-dominated sequences. With abundant supply from giant hydrocarbon generation depressions, the most important oil fields formed in Tabei and Tazhong areas. To reveal the multi-stage evolutio

关 键 词：PALEOZOIC Tarim basin GEODYNAMICS hydrocarbon accumulation. 

分 类 号：P618.13[天文地球—矿床学]