The vorticity analysis technique was applied to measure the different lithological units, such as schist, metagranite and metavolcano-sedimentary rocks, which are present in the Halaban region. This work aims to interpret the relationship between the different lithologies and the tectonic setting, in order to elucidate the nature of kinematic analysis in the Halaban region. The kinematic analyses were applied to feldspar porphyroclasts, quartz and hornblende for twenty-six samples. The kinematic vorticity number (W_m) for deformed rocks in the study area ranged from ∼0.6 to 0.9. The direction of the long axes for finite strain data (X axes) revealed a WNW trend with shallow dipping. The direction of the short axes for finite strain data (Z axes) were represented by vertical with associated horizontal foliation. The results of the kinematic vorticity and strain analyses are characterized by simple shear with different degrees of deformation in the Halaban region. Furthermore, our finite strain data shows no significant volume change during deformation. The subhorizontal foliation was synchronized with thrusting and deformation. Furthermore, throughout the overlying nappes, the same attitudes of tectonic contacts are observable, the nappes in the orogens being formed from simple shear deformation.

中文翻译：

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沙特阿拉伯东部阿拉伯地盾哈拉班地区的结构背景和运动学分析

涡度分析技术被应用于测量不同岩性单元，如片岩、变花岗岩和变质火山沉积岩，这些岩性单元存在于哈拉班地区。这项工作旨在解释不同岩性与构造环境之间的关系，以阐明哈拉班地区运动学分析的性质。对 26 个样品的长石斑岩碎屑、石英和角闪石进行了运动学分析。运动涡量数 ( W _m) 研究区变形岩石的范围从∼0.6 到 0.9。有限应变数据（X 轴）的长轴方向显示出 WNW 趋势，具有浅倾角。有限应变数据（Z 轴）的短轴方向由垂直和相关的水平叶理表示。运动学涡度和应变分析的结果以哈拉班地区不同变形程度的简单剪切为特征。此外，我们的有限应变数据显示变形过程中没有显着的体积变化。亚水平叶理与逆冲和变形同步。此外，在整个上覆推覆中，可以观察到相同的构造接触姿态，造山带中的推覆是由简单的剪切变形形成的。