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首页> 外文期刊>Journal of Asian earth sciences >Late folding-related magnetic foliation in the active Ferdows (northeastern Iran) thrust-fold system
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Late folding-related magnetic foliation in the active Ferdows (northeastern Iran) thrust-fold system

机译：活跃的Ferdows（伊朗东北部）逆冲褶皱系统中与晚期褶皱有关的磁叶化

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In this work we present new AMS and structural results from the Ferdows active fold-thrust system (Lut block, Central Iran). AMS analyses show that the Miocene units of the Upper Red Formation have a well defined magnetic fabric of tectonic origin, with both magnetic lineation and magnetic foliation oriented parallel to the regional fold axes. In most of the cases the magnetic fabric, acquired when the bedding was still horizontal, is related to different degrees of LPS shortening. In some other cases, the magnetic foliation is vertical and oblique to the bedding, suggesting that in the Ferdows thrust-fold structure a cleavage system, not visible at the outcrop scale, has been developed as a consequence of later shortening related to the activity of the thrust system, responsible of the recent earthquakes in the area. Results from this study establish a relationships between the recent tectonics of the area and the evolution of the magnetic fabric and demonstrate that a well defined magnetic fabric of pure tectonic origin can also develop in poorly deformed rocks lacking field evidence of pervasive internal deformation. (C) 2015 Elsevier Ltd. All rights reserved.
机译：在这项工作中，我们介绍了Ferdows主动褶皱-推力系统（伊朗中部的Lut区块）的新AMS和结构结果。 AMS分析表明，上部红色组的中新世单元具有构造明确的磁性构造，磁性线和磁叶性都平行于区域褶皱轴。在大多数情况下，当床上用品仍处于水平状态时获得的磁性织物与LPS缩短程度不同有关。在另一些情况下，磁叶垂直于层理并倾斜，表明在Ferdows逆冲褶皱构造中，已出现了在露头尺度上不可见的分裂系统，这是由于后来缩短了其活动性的结果。推力系统，负责该地区最近发生的地震。这项研究的结果建立了该地区最近的构造与磁性构造演化之间的关系，并表明，在缺乏现场证据证明普遍内部变形的情况下，构造良好的纯构造构造磁性构造也可以在变形较差的岩石中发育。 （C）2015 Elsevier Ltd.保留所有权利。

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