Differential Deformation and Hydrocarbon Accumulation in the Superimposed Basins

Tang, Luping; Huang, Taizhu; Jin, Wenying; Lu, Zhaohui; He, Chunbo; Ning, Fei; Peng-hao, Wang; Cai, Qun

doi:10.1016/s1872-5791(08)60099-8

Cited by 19 publications

(9 citation statements)

References 11 publications

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“…As gypsum/salt has a low yield stress, this Triassic sequence is generally considered to have played an important role in accommodating the differential deformation between rocks above and below the gypsum/salt layer. Drilling and seismic data identify a flat decollement fault that developed along this sequence, which accommodated the thin‐ skinned , Jura‐type shortening of the Sichuan basin [ Korsch et al ., ; Jia et al ., ; Plesch et al ., ; Tang et al ., ; Hubbard et al ., ]. However, up to this present study, there has been no direct evidence for the deformation of the gypsum/salt, as most of the gypsum rocks that are exposed on the surface have been leached due to weathering, and the space left either remains as caves (Figure a) or is filled by karst breccias (Figure b).…”

Section: Evidence From Within the Sichuan Basinmentioning

confidence: 98%

Block rotation: Tectonic response of the Sichuan basin to the southeastward growth of the Tibetan Plateau along the Xianshuihe‐Xiaojiang fault

et al. 2014

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GPS field and seismic data show that the southeastern margin of the Tibetan Plateau is tectonically and seismically active. This activity is due to the southeastward extrusion of the Chuandian fragment, a large crustal block rotating clockwise around the northeastern syntaxis of the Himalayas. The eastern boundary fault of this fragment is defined by the left-lateral Xianshuihe-Xiaojiang fault, which abruptly truncates the Sichuan basin of the Yangtze block. Our paper presents evidence indicating that the Sichuan basin experienced right-lateral shear along its margin, including the Longmen Shan fault belt, as shown by the presence of a large number of interference deformation features, including S-shaped and Z-shaped folds and faults, aligned in an en echelon pattern. This study hypothesizes that the Sichuan basin experienced counterclockwise rotation, dragged by the left-lateral movement along the Xianshuihe fault, and it is this rotation that was the underlying cause of the 12 May 2008 Wenchuan M s 7.9 earthquake. During the rotation, the Sichuan basin decoupled along a subhorizontal decollement fault zone that developed along Triassic gypsum-and coal-bearing rocks, at a mean depth of~5000 m, below which the Paleozoic rocks experienced much more intense deformation than the overlying Mesozoic rocks, suggesting that the lower part of the basin experienced a larger-scale rotation relative to the uppermost part of the basin. Based on thermal data from the western margin of the Sichuan basin and from along the Xianshuihe fault, the counterclockwise bending/rotation of the Sichuan basin initiated in late Cenozoic time (~13 Ma).

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Section: Evidence From Within the Sichuan Basinmentioning

confidence: 98%

Block rotation: Tectonic response of the Sichuan basin to the southeastward growth of the Tibetan Plateau along the Xianshuihe‐Xiaojiang fault

et al. 2014

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“…It experienced three stretch-convergent evolution cycles: Sinian-Middle Devonian, Late Devonian-Triassic and Jurassic-Quaternary (Xiao et al, 1996;Li et al, 1996). The differential deformation might have a great bearing upon the development of the source rocks, the hydrocarbon accumulation epoch, the trap evolution, the distribution and preservation of the oil-gas pools (Tang et al, 2009). The Tazhong uplift is an inherited paleo-uplift (Lü et al, 2000; from the Caledonian epoch, when Cambrian-Lower Ordovician source rocks begin to generate a large amount of hydrocarbons.…”

Section: Profile Evolutionary Historymentioning

confidence: 99%

Evolution and Movement of Source Kitchens and Their Control of Oil and Gas in the Tarim Cratonic Basin, China

Pang

Qiu-hua

Guan

et al. 2012

Energy Exploration & Exploitation

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The cratonic region of the Tarim Basin contains two main Lower Paleozoic source rocks-the Middle-Upper Ordovician and Lower-Middle Cambrian. However, few research focus on the relation between the evolution of hydrocarbon kitchens and its role in controlling oil and gas. Based on previous research results, this paper applies geochemical parameters of rock pyrolysis, hydrocarbon expulsion threshold theory and hydrocarbon-generated potential methods to identify the effectiveness of source rocks from the Lower Paleozoic while quantitatively calculating the hydrocarbon expulsion intensities and amounts for the two sets of source rocks. The above result is used to analysis the distribution of the effective hydrocarbon kitchen in each primary history stage and the controls on oil and gas. This study shows multiple phases of oil and gas generation and expulsion from the Cambrian-Ordovician source rocks with four oil-generating peaks with large-scale oil migration and accumulation. According to the changes in hydrocarbon expulsion intensity within different stages, we can elucidate the evolution of the source kitchens, because the hydrocarbon kitchens from the two sets of source rocks migrated in time and space, and there are multiple hydrocarbon expulsion centers. Based on the concept of the oil/gas threshold distribution model, the relation between the quantitative characterization of the hydrocarbon kitchen controlling function, and quantitative prediction of reservoir formation probability is studied, and the result shows that oil and gas reservoirs are located in more than 50% probability of controlling area. However, different periods and different layers of stacked hydrocarbon kitchen is complex and causing the main mixing of oil and gas. All these hydrocarbon expulsion centers had control over the distribution of oil and gas in the basin. From a macro and quantitative point of view, this discovery will provide certain guide for oil and gas exploration.

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“…Studies suggest that different geodynamic background, including the extension, compression and strike-slip, will generate diverse basin-range coupling processes and mechanisms (Cheng et al., 2015; Donath, 1962; Fan et al., 2015; Liu et al., 2000; Tang et al., 2012). The exploration testified that the basin-range system usually has abundant of mineral and hydrocarbon resources (Jia et al., 2013; Tang et al., 2009), making this area as an important target for the resources exploration. Therefore, the understanding of geodynamic process of basin-range system could provide an effective way to explain the formation and evolution of mineral and hydrocarbon resources.…”

Section: Introductionmentioning

confidence: 99%

The basin and range systems and their evolution of the northwestern margin of Junggar Basin, China: Implications for the hydrocarbon accumulation

Zhou

Chen

et al. 2019

Energy Exploration & Exploitation

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Basin and range system in the northwestern margin of the Junggar Basin highly controlled the distribution of sediments and oil and gas. Detailed studies of basin and range system will be helpful in understanding the formation of hydrocarbon resources. Based on the previous studies and geophysical data, we analyze the structural characteristics and their evolution of basin and range system in this area. Although the basement of the Junggar Basin is still uncertain, high resolution of geophysical data suggests that the basement of the basin generally has lower and much stable gravity and magnetic anomalies than that in the orogenic belts around the basin and these anomalies are uneven in the basin, implying the basement may be assembled by different blocks. The amalgamation of these blocks will affect the deformation of the corresponding sedimentary cover. Detailed seismic interpretation across the basin and range system suggest that the imbricate thrust faults are dominant structural styles in this area. The Zaire-Hala'alate mountains were raised after multi-stage tectonic movement, and they started to rise in Late Carboniferous. The evolution of the western margin of the Junggar Basin can be divided into three stages, which are the initial formation stage in Late Carboniferous, the foreland basin developed stage from Permian to Jurassic and the rejuvenated foreland basin stage in Cenozoic. The coupling processes of basin and range system caused the formation, migration,

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Differential Deformation and Hydrocarbon Accumulation in the Superimposed Basins

Cited by 19 publications

References 11 publications

Block rotation: Tectonic response of the Sichuan basin to the southeastward growth of the Tibetan Plateau along the Xianshuihe‐Xiaojiang fault

Block rotation: Tectonic response of the Sichuan basin to the southeastward growth of the Tibetan Plateau along the Xianshuihe‐Xiaojiang fault

Evolution and Movement of Source Kitchens and Their Control of Oil and Gas in the Tarim Cratonic Basin, China

The basin and range systems and their evolution of the northwestern margin of Junggar Basin, China: Implications for the hydrocarbon accumulation

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