库车坳陷克拉苏构造带中段盐下逆掩推覆带特征与数值模拟

赵佳琦; 程晓敢; 陈维力; 张鹏; 潘杨勇; 陈龙; 肖文; 范坤宇; 魏疆宁

doi:10.3799/dqkx.2025.295

Volume 51 Issue 1

Jan. 2026

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Article Navigation > Earth Science > 2026 > 51(1): 317-328

Zhao Jiaqi, Cheng Xiaogan, Chen Weili, Zhang Peng, Pan Yangyong, Chen Long, Xiao Wen, Fan Kunyu, Wei Jiangning, 2026. Characteristics and Numerical Simulation Analysis of Subsalt Overthrust Belts in Middle Kelasu Structural Belt, Kuqa Depression. Earth Science, 51(1): 317-328. doi: 10.3799/dqkx.2025.295

Citation:

Zhao Jiaqi, Cheng Xiaogan, Chen Weili, Zhang Peng, Pan Yangyong, Chen Long, Xiao Wen, Fan Kunyu, Wei Jiangning, 2026. Characteristics and Numerical Simulation Analysis of Subsalt Overthrust Belts in Middle Kelasu Structural Belt, Kuqa Depression. Earth Science, 51(1): 317-328. doi: 10.3799/dqkx.2025.295

Citation:

Zhao Jiaqi, Cheng Xiaogan, Chen Weili, Zhang Peng, Pan Yangyong, Chen Long, Xiao Wen, Fan Kunyu, Wei Jiangning, 2026. Characteristics and Numerical Simulation Analysis of Subsalt Overthrust Belts in Middle Kelasu Structural Belt, Kuqa Depression. Earth Science, 51(1): 317-328. doi: 10.3799/dqkx.2025.295

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Characteristics and Numerical Simulation Analysis of Subsalt Overthrust Belts in Middle Kelasu Structural Belt, Kuqa Depression

doi: 10.3799/dqkx.2025.295

Zhao Jiaqi^{1
,
,},
Cheng Xiaogan^{2, 3
,
,
,},
Chen Weili¹,
Zhang Peng^{2, 3},
Pan Yangyong¹,
Chen Long^{2, 3},
Xiao Wen¹,
Fan Kunyu¹,
Wei Jiangning¹

1.
PetroChina Tarim Oilfield Company, Korla 841000, China
2.
School of Earth Sciences, Zhejiang University, Hangzhou 310027, China
3.
Structure Research Center of Oil & Gas Bearing Basin, Ministry of Education, Hangzhou 310027, China

Received Date: 2025-09-08
Publish Date: 2026-01-25

Abstract

Abstract

Overthrust belt is of significant importance for hydrocarbon exploration. To elucidate the characteristics and formation mechanisms of the subsalt overthrust belts in the middle Kelasu structural belt, Kuqa Depression, it conducted detailed seismic profile interpretation combined with discrete element numerical modeling. The results reveal the development of two major subsalt overthrust belts, Bozi 25 and Keshen 5 West, in the middle Kelasu structural belt, and demonstrate that their spatial distribution is closely coupled with the Paleogene salt-lake distribution and pre-existing salt diapiric structures. The frontal uplift separating the two salt lakes, where abrupt variations in gypsum-salt layer thickness occur, acts as a stress concentration zone which facilitates the preferential propagation of large-scale overthrust structures. Moreover, the progressive growth of salt diapirs provides additional accommodation space for the development of these large-scale overthrust systems. These findings highlight the footwalls of overthrust structures as key targets for future hydrocarbon exploration and for identifying or re-evaluating Bashijiqike Formation traps within the Kelasu structural belt.
- Kuqa Depression,
- Kelasu structural belt,
- overthrust belt,
- salt-lake,
- salt diapirism,
- discrete element method,
- structural geology

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References(83)

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Characteristics and Numerical Simulation Analysis of Subsalt Overthrust Belts in Middle Kelasu Structural Belt, Kuqa Depression

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