Abstract Geological study of the Khan Tengri and Pobedi massifs highlights two phases of compressional fault displacements. A Late Permian/Triassic displacement phase is highlighted (1) by biotite 40Ar/39Ar ages of 265–256 Ma, suggestive of cooling of Pobedi mid-crustal granulites during > 8 km of top-to-the-north motion of the Pobedi Thrust; (2) by 40Ar/39Ar dating of syn-kinematic phengite at 249–248 Ma, which suggests a crystallization age during top-to-the-south motion of the Khan Tengri Thrust shear zone; (3) by Apatite Helium (AHe) ages of 280–240 Ma on the crystalline basement below the Mesozoic peneplain, which gives insight into the final exhumation stage. Cenozoic reactivation of the Pobedi Thrust is indicated by AHe thermochronology with a mean age of 8.3 ± 2.5 Ma, in agreement with ~3 km exhumation and ~4.2 km of top-to-the-north motion in the Late Miocene. Along a north–south transect of the west Tian Shan range from Issyk-Kul Lake to Tarim Basin, compiled thermochronological data outline out-of-sequence deformation beginning with the activation of north-directed crustal-scale faults at 22–15 Ma along the northern margin of the north Tian Shan, followed by 20–10 Ma motion at the boundary between the Middle and the South Tian Shan, and ending with the

中文翻译：

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中亚最高地块的热年代学（Khan Tengri - Pobedi，吉尔吉斯斯坦东南部）：晚中新世（约 8 Ma）重新激活二叠纪断层的证据和对构建天山的见解

摘要 Khan Tengri 和 Pobedi 地块的地质研究突出了挤压断层位移的两个阶段。黑云母 40Ar/39Ar 年龄为 265-256 Ma 突出显示了晚二叠纪/三叠纪位移阶段 (1)，这表明 Pobedi 冲断层自上而下的运动超过 8 公里期间 Pobedi 中地壳麻粒岩冷却; (2) 249-248 Ma的同向运动的硅铝榴石的40Ar/39Ar测年，表明汗腾格里逆冲剪切带自上而南运动过程中的结晶年龄；(3) 中生代准平原下方结晶基底上年龄为 280-240 Ma 的磷灰石氦 (AHe) 年龄为 280-240 Ma，这可以深入了解最终的折返阶段。Pobedi 断层的新生代重新激活由 AHe 热年代学表明，平均年龄为 8.3 ± 2.5 Ma，与 ~3 km 的挖掘和 ~4 一致。中新世晚期 2 公里的自上而下运动。沿着从伊塞克湖到塔里木盆地的西天山山脉的南北横断面，编制的热年代学数据概述了从沿 22-15 Ma 的北向地壳尺度断层的激活开始的失序变形。北天山北缘，随后在中天山与南天山交界处发生 20~10 Ma 运动，以