The granites are exposed at Dubair and Shang respectively in the north and south of Besham, northern Pakistan. The two exposures are very similar in terms of field features, petrographic details, petrogenetically important geochemical parameters and, more importantly, crystallization temperatures and ages. All this strongly suggests that granites at the two locations are co-genetic and represent two widely separated exposures of the same predominantly un-exposed large intrusion. The Dubair-Shang granites are mostly mega-porphyritic; however evenly fine grained massive and foliated to gneissose varieties also occur at places. The studied samples essentially consist of perthitic feldspar, plagioclase and quartz together with substantial quantities of biotite, minor to accessory amphibole, and accessory to trace amounts of ilmenite, apatite, epidote, titanite and zircon. The amphibole is ferro-edenite and ferro-pargasite while the biotite is markedly Fe-rich and thus approaches annite in composition. The Dubair-Shang granites are per-aluminous, magnesian to ferroan and alkali-calcic to alkalic in composition. Variations in major and trace element contents indicate evolution of the Dubair-Shang intrusion through magmatic differentiation involving early fractionation of amphibole, plagioclase, ilmenite and apatite at 850–890 °C temperature, 6–8 kb pressure and low fO₂. The relatively higher amounts of SiO₂, Th, U, ΣREE, greater LREE/HREE ratios, and higher negative Eu anomaly, lower average MgO, Fe₂O₃, CaO, TiO₂, P₂O₅, Nb, Sr, Ba in the Shang than Dubair samples indicate that the exposure at Shang largely represents more evolved part of the intrusion. The chemical details of biotite and calcic amphibole, whole-rock major and trace element contents including both HFSE and LILE, higher ΣREE and general REE patterns and high magma temperature (averg. Zr Tsat = 834 ± 24 °C) all endorse A-type affinity of the granites and suggest their solidification from a largely crust-derived melt emplaced during Paleo-Proterozoic at 20−30 km depth in post-orogenic realm.

花岗岩分别暴露在巴基斯坦北部Besham北部和南部的Dubair和Shang上。从场特征，岩相学细节，岩石成因上重要的地球化学参数以及更重要的是结晶温度和年龄来看，这两次暴露非常相似。所有这些都强烈表明，这两个位置的花岗岩是共生的，代表了两个相同而主要未暴露的大型侵入岩的广泛分离的暴露。Dubair-Shang花岗岩多为大型斑岩。然而，在某些地方也会出现均匀细小的块状和叶状的片麻质变种。所研究的样品主要由蠕虫长石，斜长石和石英以及大量的黑云母组成，次要的闪石为次要矿物，而次要的钛铁矿，磷灰石，附子为微量，钛矿和锆石。闪石为亚铁辉石和辉绿铁矿，而黑云母明显富含铁，因此其组成接近闪铁矿。Dubair-Shang花岗岩的成分是全铝质的，镁质至二茂铁，碱成钙至碱性。主要和微量元素含量的变化表明，通过岩浆分化，包括闪石，斜长石，钛铁矿和磷灰石在850–890°C，6–8 kb压力和低fO的早期分馏，通过岩浆分化演化了Dubair-Shang侵入体。₂。相对较高的SiO ₂含量，Th，U，ΣREE，较高的LREE / HREE比和较高的Eu负负异常，较低的MgO，Fe ₂ O ₃，CaO，TiO ₂，P ₂ O ₅平均值上的Nb，Sb，Sb，Nb，Sr，Ba值表明，Shang处的暴露在很大程度上代表了入侵的发展部分。黑云母和钙质闪石的化学成分，全岩石主要元素和微量元素含量（包括HFSE和LILE），较高的REE和一般REE模式以及较高的岩浆温度（平均Zr Tsat = 834±24°C）都支持A型花岗岩的亲和力，并表明它们是在造山后领域中古元古代在20-30 km深度从地壳衍生的熔体中凝固的。