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Abstract <p>Gas Hure Lake, as one of the largest saline lakes in the Qaidam Basin, is a key geomorphological feature whose formation is closely linked to the Cenozoic tectonic activities of the Altyn Tagh Fault and the Eastern Kunlun Fault. A good knowledge of its formation mechanism will shed new lights on the relationship between regional tectonic activity and lake basin evolution in the western Qaidam Basin. This study investigates the structural genesis and formation timing of Gas Hure Lake and the associated drainage system on the basis of high-resolution 3D seismic data and surface elevation profiles, and further discusses the relationship of lake basin formation with Cenozoic tectonic activity in the western Qaidam Basin. Seismic reflection profiles and amplitude time slice show that the Gas Hure Lake is developed in the common footwall of the Arlar Fault, III Fault, Youshashan Fault, and Hongliuquan Fault. Growth strata analysis suggests an initial formation for Gas Hure Lake during the deposition of the Xiayoushashan Formation. These findings indicate that the Gas Hure Lake has been developed in the localized fault-controlled transpressional depression controlled by northeastward-propagating faults in the western Qaidam Basin since the early Miocene. Our work reflects the dynamic interplay between regional fault activity and lake basin evolution in the western Qaidam Basin, and will contribute to a broader understanding of how major intracontinental strike-slip faults influence basin geomorphology and sedimentation pattern.</p>

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Genesis and Timing of Gas Hure Lake and Implications for Interplay between Regional Tectonic Activity and Lake Basin Evolution in the Western Qaidam Basin, Northern Tibetan Plateau

  • 期刊论文

  • 发表日期：

    2025年11月5日

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  • Xiang Cheng,
  • Zhaojie Guo,
  • Xiangjiang Yu,
  • Changhao Zhang,
  • Chengxiang Wan

摘要

Abstract

Gas Hure Lake, as one of the largest saline lakes in the Qaidam Basin, is a key geomorphological feature whose formation is closely linked to the Cenozoic tectonic activities of the Altyn Tagh Fault and the Eastern Kunlun Fault. A good knowledge of its formation mechanism will shed new lights on the relationship between regional tectonic activity and lake basin evolution in the western Qaidam Basin. This study investigates the structural genesis and formation timing of Gas Hure Lake and the associated drainage system on the basis of high-resolution 3D seismic data and surface elevation profiles, and further discusses the relationship of lake basin formation with Cenozoic tectonic activity in the western Qaidam Basin. Seismic reflection profiles and amplitude time slice show that the Gas Hure Lake is developed in the common footwall of the Arlar Fault, III Fault, Youshashan Fault, and Hongliuquan Fault. Growth strata analysis suggests an initial formation for Gas Hure Lake during the deposition of the Xiayoushashan Formation. These findings indicate that the Gas Hure Lake has been developed in the localized fault-controlled transpressional depression controlled by northeastward-propagating faults in the western Qaidam Basin since the early Miocene. Our work reflects the dynamic interplay between regional fault activity and lake basin evolution in the western Qaidam Basin, and will contribute to a broader understanding of how major intracontinental strike-slip faults influence basin geomorphology and sedimentation pattern.