Cenozoic dextral shearing along the Arusan sector of the Great Kavir – Doruneh Fault System (Central Iran)

The data here provided have been used to analyse the structural evolution of the Arusan sector of the Great Kavir - Doruneh Fault system in Central Iran, one of the major intracontinental active strike-slip faults extending from the Afghan border to the Nain region between Central Iran and the Sanandaj-Sirjan Zone. We document important dextral shearing recorded along a segment of the GKDFS, the Arusan Fault System (AFS), located east of Jandaq, close to the present-day active trace of the GKDFS. The AFS include several ENE-WSW striking strands exposed for a length of more than 50 km, which couple pre-Cretaceous ophiolites and metamorphic basement units with the Cretaceous succession of the Khur basin. The fault shows transpressional structures consistent with a dextral shear including thrusts and en échelon folds affecting the Cretaceous carbonate units. Paleostress reconstruction estabilished vorticity parameters indicating that deformation occurred close to a total simple shear regime with a calculated Wk between 0.9 and 1.
The enormous Meso-Cenozoic dextral displacements occurred along the AFS and along the entire GKDFS are attested by the up to several hundreds of kilometers offset of the Paleotethys suture zone, from NE Iran to the western border of Central Iran.

We provide here the original field data, elaboration of satellie ASTER images for gelogical interpretations, geolocalization of each structural measurement sites that we used for analyses ad interpretations in our work.
The data details are as follows:
- FILE_1: Geological map of the Arusan Fault System with the localization of all measurement sites
- FILE_2: A kml file with the geolocalization of measurement sites
- FILE_3: Georeferenced false color composite image generated from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Level 1B data collected on 13 September 2003. RGB combination shows the principal components derived from the Gram-Schmidt spectral sharpening tool.
- FILE_4: Field images of fault planes with kinematic indicators
- FILE_5: Fault slip data used for paleostress calculations

本数据集所提供的信息，已用于分析位于伊朗中部、横跨阿富汗边界至伊朗中部与桑桑贾-希尔詹区之间的奈因地区的伟大卡维尔-多伦赫断层系统（GKDFS）中的阿鲁桑区域的结构演化。阿鲁桑区域是主要的大陆内部活动正断走滑断层之一。本研究记录了在GKDFS的一个段落，即位于贾达克以东、接近GKDFS现今活动线附近的阿鲁桑断层系统（AFS）中的重要右旋剪切。AFS包括多个东北-西南向展布的断层带，长度超过50公里，将前寒武纪的洋壳和变质基底单元与胡尔盆地的白垩纪地层相耦合。该断层显示出与右旋剪切一致的挤压结构，包括逆冲断层和阶梯状褶皱，影响白垩纪碳酸盐岩单元。古应力重建确立的涡度参数表明，变形发生在接近完全简单剪切状态的附近，计算出的Wk值介于0.9至1之间。在AFS和整个GKDFS沿线发生的巨大中生代右旋位移，由从东北伊朗至伊朗中部西部边界的古特提斯缝合带的数百公里偏移量得到证实。本数据集提供了原始的野外数据、卫星ASTER图像的地质解释细化、以及用于分析及解释的每个结构测量点的地质定位。数据详情如下：
- FILE_1：阿鲁桑断层系统的地质图，标注所有测量点位置
- FILE_2：包含测量点地质定位的kml文件
- FILE_3：由2003年9月13日收集的先进星载热辐射和反射辐射计（ASTER）Level 1B数据生成的地理参照的假彩色合成图像。RGB组合显示的是通过Gram-Schmidt光谱锐化工具导出的主成分
- FILE_4：断层平面及运动学指示器的野外图像
- FILE_5：用于古应力计算的断层滑动数据