The Alvand mantled granite-gneiss dome developed within the Zagros hinterland fold-and-thrust belt. This belt is located in the core of the Zagros thick-skinned tectonics and is characterized by in-sequence and out-of-sequence sole thrusting and involved basement. Quartz c-axis fabric, kinematic vorticity number, and finite strain analyses were used to investigate the deformation characteristic of the Alvand granite-gneiss dome. The estimated kinematic vorticity number (W_k = W_m = 0.82 ± 0.11) from the quartz c-axis of quartzo-feldspathic mylonite reveals the relative contribution of 61% simple shear and 39% pure shear component. Measurement of the quartz c-axis opening angle of mylonite nappes documents the deformation temperature (472° ± 35°) and suggests an amphibolite facies condition. This mantled dome represents the ductile flow between an upper normal-sense boundary and a lower thrust-sense boundary, which reach down in the entire middle to lower parts of the gneissic continental crust. Structural and vorticity analyses suggest that the Alvand gneiss dome has resulted from the inclined (α = 25°) dextral transpression of the N. Gondwana and S. Lurasia margin and records four phases of deformation (D1, D2, D3, and D4) during structural evolution.

Alvand 地幔花岗岩-片麻岩穹顶发育在扎格罗斯腹地褶皱冲断带内。该带位于扎格罗斯厚皮构造的核心，具有顺序和不顺序的唯一逆冲和涉及基底的特征。石英 c 轴织物、运动学涡度数和有限应变分析用于研究 Alvand 花岗岩-片麻岩穹顶的变形特性。估计的运动涡量数 ( W _k  =  W _m = 0.82 ± 0.11) 从石英长石糜棱岩的石英 c 轴显示 61% 的简单剪切和 39% 的纯剪切分量的相对贡献。糜棱岩推覆石英 c 轴张角的测量记录了变形温度 (472° ± 35°) 并表明角闪岩相条件。这个地幔穹顶代表了上法向边界和下逆推力边界之间的韧性流动，它们向下延伸到片麻岩大陆地壳的整个中下部。结构和涡度分析表明 Alvand 片麻岩穹顶是由 N. Gondwana 和 S. Lurasia 边缘的倾斜 (α = 25°) 右旋挤压造成的，并记录了在此期间的四个变形阶段 (D1、D2、D3 和 D4)结构演化。