Unraveling the age and kinematics of low temperature deformation events is crucial in understanding the late-stage evolution of orogens. However, accurate age constraints can often be challenging to obtain due to unideal outcrop conditions, large sedimentary hiatuses or the lack of well-defined thermal events. In this study, we show on the example of the Nekézseny Thrust, a poorly exposed late orogenic thrust in the southern Western Carpathians, that a combined approach of structural analysis and multi-method thermochronology can provide the necessary temporal, kinematic and thermal constraints for a detailed reconstruction of the deformation history. While structural mapping revealed that the Late Cretaceous Uppony Gosau Basin in the footwall of the Nekézseny Thrust underwent a significant post-Campanian and pre-Miocene shortening, K/Ar dating of fault gouge samples from the main fault zone constrained the primary thrusting event to the Maastrichtian. Based on the acquired apatite fission-track and (U-Th)/He ages, subsequent heating of the Upper Cretaceous sediments due to tectonic burial was limited to 75–100°C, followed by deformation-related and gradual cooling between the Eocene and Early Miocene. Considering the reconstructed deformation history, as well as the large-scale tectonic affinity of the displaced units in its footwall and hanging wall, the Nekézseny Thrust is a far-traveled (ca. 600 km) segment of the Late Cretaceous Alps-Dinarides contact zone, whose development was linked to the switch from lower plate to upper plate position with respect to the Sava Zone and Alpine Tethys sutures, respectively.

中文翻译：

---

同造山低温变形事件的年龄、运动学和热学约束：来自内克兹塞尼逆冲断层（阿尔卑斯-喀尔巴阡-迪纳里克地区）热年代学和结构数据的见解

揭示低温变形事件的年龄和运动学对于理解造山带的后期演化至关重要。然而，由于不理想的露头条件、大的沉积间断或缺乏明确的热事件，准确的年龄限制通常很难获得。在这项研究中，我们以内克塞尼逆冲断层（西喀尔巴阡山脉南部一个暴露不良的晚期造山逆冲断层）为例，表明结构分析和多方法热年代学的结合方法可以为构造过程提供必要的时间、运动学和热约束。详细重建变形历史。虽然构造测绘显示，位于 Nekézseny 逆冲断层下盘的白垩纪晚期 Uppony Gosau 盆地经历了坎潘期后和中新世前的显着缩短，但主断层带断层泥样品的 K/Ar 定年将主要逆冲事件限制在马斯特里赫特。根据获得的磷灰石裂变径迹和（U-Th）/He年龄，由于构造埋藏，随后上白垩统沉积物的加热被限制在75-100°C，随后在始新世和新世之间与变形相关并逐渐冷却。中新世早期。考虑到重建的变形历史，以及其下盘和上盘位移单元的大规模构造亲和力，Nekézseny 逆冲断层是晚白垩世阿尔卑斯山-迪纳里德斯接触带的一个遥远的部分（约 600 公里） ，其发展与分别相对于萨瓦带和高山特提斯缝合线从下板位置到上板位置的转换有关。