Vertical Differential Structural Deformation of the Main Strike‐slip Fault Zones in the Shunbei Area, Central Tarim Basin: Structural Characteristics, Deformation Mechanisms, and Hydrocarbon Accumulation Significance

Tian, Fanglei; He, Dengfa; CHEN, Jiajun; MAO, Danfeng

doi:10.1111/1755-6724.14973

Cited by 7 publications

(3 citation statements)

References 28 publications

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“…The Qaidam Basin is located in the northern part of the Qinghai-Tibet Plateau (Allegre et al, 1984;Wright, 1987;Harrison et al, 1992;Metivier et al,1998;Tian et al, 2022) (Fig. 1).…”

Section: Study Area and Geological Settingmentioning

confidence: 99%

Salt‐Lake Basin Bedrock Weathered Crust Gas Reservoir in the Altun Mountains Front of the Qaidam Basin, Western China

Zhang

Jia

Wáng

et al. 2023

Acta Geologica Sinica (Eng)

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The bedrock weathered crust in front of the Altun Mountains in the Qaidam Basin is different from other bedrock weathered crust, because the Qaidam Basin is a salt lake basin, the saline water fluid is infiltrated and deposited in the overlying strata, and a large amount of gypsum is filled in bedrock weathered crust, the pore structure is changed. Use core observation, polarized light microscopy, Electron probe, physical property analysis and field emission scanning electron microscopy experiments. Cracks and a small number of dissolved pores in the interior of the weathered crust, the matrix micropores are widely developed. The characteristics of matrix micropores and cracks have been studied, especially the various matrix cracks formed by tectonic and weathered, as well as the stress characteristics of small dissolved pores, physical properties such as porosity and permeability, This “dual structure” developed in the bedrock is important for guiding the exploration of the lake basin bedrock natural gas.

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“…The Qaidam Basin is located in the northern part of the Qinghai-Tibet Plateau (Allegre et al, 1984;Wright, 1987;Harrison et al, 1992;Metivier et al,1998;Tian et al, 2022) (Fig. 1).…”

Section: Study Area and Geological Settingmentioning

confidence: 99%

Salt‐Lake Basin Bedrock Weathered Crust Gas Reservoir in the Altun Mountains Front of the Qaidam Basin, Western China

Zhang

Jia

Wáng

et al. 2023

Acta Geologica Sinica (Eng)

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“…Thus, constructing the transfer zone is critical for understanding how deformation propagates along the strike (Moeremans et al, 2014). Furthermore, the structural geometry and fault system provide traps and migration paths for petroleum accumulation, and changes in the structural style can result in a complex petroleum distribution (Guan et al, 2016;Pei et al, 2018;Tian et al, 2022). In this sense, understanding the structural architecture of the transfer zone will also help reduce risks of petroleum exploration activities in such regions.…”

Section: Introductionmentioning

confidence: 99%

Structural Variation between the Western and Eastern Kuqa Fold‐and‐thrust Belt, China: Insights from Seismic Interpretation and Analog Modeling

Wei

Xie

Yin

et al. 2023

Acta Geologica Sinica (Eng)

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The Kuqa fold‐and‐thrust belt exhibits apparent structural variation in the western and eastern zone. Two salt layer act as effective decollements and influence the varied deformation. In this study, detailed seismic interpretations and analog modeling are presented to construct the suprasalt and subsalt structures in the transfer zone of the middle Kuqa and investigate the influence of the two salt layers. The results reveal that the relationship of the two salt layers changes from separated to connected, and then overlapped toward the foreland in the transfer zone. Different structural models are formed in the suprasalt and subsalt units due to the interaction of the two salt layers. The imbricate thrust faults form two broom‐like fault systems in the subsalt units. The suprasalt units develop detached folds terminating toward the east in the region near the orogenic belt. whereas, two offset anticlines with different trends develop at the frontal edge of the lower salt layer and the trailing edge of the upper salt layer, respectively. According to exploration results in this region, the relationship between suprasalt and subsalt structures has an influence on hydrocarbon accumulation. We believe that the connected deformation contains high‐risk plays while the decoupled deformation contains well‐preserved plays.

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“…Its sliding distribution are commonly determined by correlating offset stream channels and offset channels are formed by the interplay of tectonic and geomorphic processes (Papaleo et al, 2017;Reitman et al, 2019). To study the distribution and features of the strike-slip faults is significant to understanding the migration and accumulation of hydrocarbon resources (Qiu et al, 2019;Tian et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Geometric and kinematic analysis of faults bordering the Andaman sea continental shelves: a 3D seismic case study

Guo,

Luan,

Zhang

et al. 2023

Front. Earth Sci.

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To clarify the tectonic evolution of M15 block in the Andaman Sea, we perform a delicate study of fault geometry and dynamics using a 3D seismic data. The data reveal eight sequence interfaces from the Early Oligocene to the Quaternary, large scale and multi angle extensional strike-slip faults, and a series of normal faults. The two large scale faults F1 and F2 start in the Eocene and end in the Quaternary, controlling the regional structure. The NNE-SSW strike-slip F1 fault belongs to the South Sagaing fault and the NNE-SSW strike-slip F2 is the eastern Andaman fault, the strike-slip movement of which are controlled by the impact of the collision between the Indian plate and the Eurasian plate. Through the analysis of the fault development history by the method of the ancient drop and the growth index, we find that most of the large or secondary scale faults reach the maximum drop and growth index in the Miocene, indicating that the Miocene is a significant period of plate collision enhancing and faults generating. The regional stress field is dominated by E-W tension. The continental crust has expanded rapidly from the Oligocene to the Miocene which results in the rapid subsidence of the crust. This regional stress intensity becomes weak after the Miocene. The activities of the faults caused a large difference in terrain height between the west and the east in the study area, forming a pattern of the western depression and the eastern terrace. Many NNE-SSW, NE-SW or NEE-SWW trend strike-slip faults and minor faults develop in the Miocene. It echoes the event that the convergence and subduction of the Indian plate from SW to NE direction led to the right rotation and N-NNE strike-slip of the West Myanmar block in the Miocene, thus forming a regional large strike-slip fault. All of the faults affect the structure of the region.

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Vertical Differential Structural Deformation of the Main Strike‐slip Fault Zones in the Shunbei Area, Central Tarim Basin: Structural Characteristics, Deformation Mechanisms, and Hydrocarbon Accumulation Significance

Cited by 7 publications

References 28 publications

Salt‐Lake Basin Bedrock Weathered Crust Gas Reservoir in the Altun Mountains Front of the Qaidam Basin, Western China

Salt‐Lake Basin Bedrock Weathered Crust Gas Reservoir in the Altun Mountains Front of the Qaidam Basin, Western China

Structural Variation between the Western and Eastern Kuqa Fold‐and‐thrust Belt, China: Insights from Seismic Interpretation and Analog Modeling

Geometric and kinematic analysis of faults bordering the Andaman sea continental shelves: a 3D seismic case study

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