当前位置: X-MOL 学术J. Asian Earth Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Morphometric investigations on the NW Bitlis-Zagros mountain range (SE Turkey): Implications for the internal deformation of the western Turkish-Iranian Plateau
Journal of Asian Earth Sciences ( IF 2.7 ) Pub Date : 2021-03-26 , DOI: 10.1016/j.jseaes.2021.104751
Taylan Sançar

Collision of the Arabian and Eurasian plates has resulted in uplift of the Turkish-Iranian Plateau, where debate continues over how post-collisional convergence is being converted to strain. The internal deformation models of the plateau have taken into account the distribution of deformation in the NW-trending Bitlis-Zagros Mountain Range (BZMR), the southern boundary of the collision. The western end of the BZMR is marked by contrasting topographic relief resulting from the coupling of tectonic and erosional processes. This region providing an excellent record for undertaking quantitative analysis which can improve our understanding of its tectonic evolution. Mountain front analyses reveal that each fault segment located in front of the western BZMR falls within the limits of Class-1 that corresponds to an uplift rate of >0.5 mm yr−1. Hypsometric and basin asymmetry analysis were analyzed for 93 drainage basins, indicating that weakly to moderately eroded basins can be moderately to strongly asymmetric but show no uniform tilting direction. Channel concavity, integral and knickpoint analyses suggest that, apart from the thrust fault that represents the margin of the collision zone, there is no pronounced single geological constraint that causes differential tectonic uplift and furthermore implies that the effect is distributed across multiple different structures. The findings of this study suggest that continuous lower rate horizontal displacement has occurred in this region since the onset of collision, but also indicates that the western end of the BZMR represents a zone of higher convergence, in which shortening is being converted to the vertical plane strain.



中文翻译:

NW Bitlis-Zagros山脉(东南土耳其)的形态计量学研究:对土耳其西部-伊朗高原内部变形的影响

阿拉伯板块和欧亚板块的碰撞导致了土耳其-伊朗高原的隆升,关于碰撞后的融合如何转换为应变的争论仍在继续。高原的内部变形模型已经考虑到了北西向的Bitlis-Zagros山脉(BZMR)的南北趋势的变形分布。BZMR的西端以构造和侵蚀过程耦合产生的对比地形起伏为特征。该地区为进行定量分析提供了极好的记录,可以增进我们对其构造演化的了解。山前分析表明,位于BZMR西部的每个断层段都属于1级界限,对应于> 0.5 mm yr的上升速率-1。分析了93个流域的流变和流域不对称性分析,表明从弱到中度侵蚀的盆地可以是中度到强非对称,但没有一致的倾斜方向。通道凹度,积分和拐点分析表明,除了代表冲撞带边缘的逆冲断层外,没有明显的单一地质约束导致构造差异抬升,而且还暗示影响分布在多个不同的结构上。这项研究的发现表明,自碰撞发生以来,该区域一直发生较低速率的水平位移,但也表明BZMR的西端代表较高收敛的区域,在该区域中,缩短现象已转换为垂直平面。拉紧。

更新日期:2021-05-25
down
wechat
bug