Coupling of deformation and magmatism has been widely reported in several old orogenic belts, particularly along faults and shear zones. The syn-kinematic plutons in exhumed shear zones offer the best opportunity to understand the complex relationship between magmatism and regional deformation. The present paper investigates the geometry and internal structure of granite plutons emplaced in thrust faults and shear zones, and structural control on their emplacement mechanism. Abu Ziran pluton is an example of the intrusions emplaced in an active brittle-ductile thrust shear zone in the Nubian shield, and documents clear evidence on the interaction between magmatism and deformation during melt ascent and emplacement. Results from detailed geological mapping, remote sensing and structural analysis of the pluton permitted the constraining of the pluton's geometry, emplacement mechanism, and spatio-temporal evolution. Structural analysis indicates that pluton emplacement was syn-to-late-tectonic. The brittle-ductile fabrics in the wall rock are consistent with a sub-horizontal thrust shear zone with a top-to-NW shear sense. The activity of the shear zone was accompanied by an episode of a calc-alkaline magmatic pulse. Granitic magma ascended upward via non-exposed feeder dykes, or through ramps and flats in the thrust system and emplaced laterally along the shear zone, forming complex sub-horizontal sheet-shaped intrusion. The geometry and extent of pluton emphasize that inherited heterogeneities and regional stress states played important role in the emplacement processes. In addition, localization of pluton along or near the contact between ophiolitic nappes and mylonitic metasediments suggests that the rheological boundaries act as barriers that impede the rise of ascending magma, causing magma arrest and trigger lateral spreading and emplacement. The outcomes of this study allowed the reconstruction of the geometry and internal structure of Abu Ziran pluton and grasping its evolution in space and time.

变形和岩浆作用的耦合在几个古老的造山带中被广泛报道，特别是沿着断层和剪切带。挖掘出的剪切带中的同运动岩体为了解岩浆作用与区域变形之间的复杂关系提供了最佳机会。本文研究了冲断断层和剪切带中花岗岩岩体的几何形状和内部结构，以及对其就位机制的结构控制。Abu Ziran 岩体是在努比亚地盾活跃的脆韧性逆冲剪切带中侵入的一个例子，它记录了熔体上升和就位过程中岩浆作用与变形之间相互作用的明确证据。详细地质测绘的结果，岩体的遥感和结构分析允许限制岩体的几何形状、就位机制和时空演化。构造分析表明，岩体就位为同构造晚构造。围岩中脆韧组构与亚水平逆冲剪切带一致，具有自上而下的剪切感。剪切带的活动伴随着一次钙碱性岩浆脉冲的发作。花岗质岩浆通过非裸露的馈线岩脉或逆冲系统中的坡道和平台向上上升，并沿剪切带横向侵位，形成复杂的亚水平片状侵入体。岩体的几何形状和范围强调遗传的异质性和区域应力状态在侵位过程中发挥了重要作用。此外，沿着或靠近蛇绿质推覆和糜棱变沉积物之间的接触处定位的岩体表明，流变边界作为阻碍上升岩浆上升的屏障，导致岩浆停滞并引发横向扩展和就位。这项研究的结果使阿布兹兰岩体的几何形状和内部结构得以重建，并掌握了它在空间和时间上的演变。