Clastic rich Hangu Formation of the Early Paleocene exposed at the apex of Hazara-Kashmir syntaxis, is significant in providing evidence of the regional Mesozoic–Cenozoic unconformity and nature of detritus supplied. The current study focuses on U-Pb age dating of the detrital zircons along with spinel geochemistry to interpret tectonic implications on provenance. The Hangu Formation is composed of coarse grained sandstone, arenaceous limestone, carbonaceous shale and laterite around the Paras region and rests unconformably over Mesozoic Samana Suk Formation. The probability density plots of the detrital zircons of the Hangu Formation exhibit strong similarity to the Tethyan Himalayan detrital record. The younger Mesozoic detrital zircons exhibit resemblance to Tethyan Himalayan as well as ophiolitic detrital suites, but are very few compared to their coeval Stumpata, Jidula and Denggeng/Sangdanlin formations. The quantitative comparison reflects strong resemblance to the Tethyan Himalaya, whereas, the ophiolitic component relationship is quite poor. Comparison of spinel geochemical data with Northwestern ophiolites (Chilas Ophiolites) and Tethyan Himalaya exhibits mixed source regime of the Hangu sediments. However, the combined U-Pb dating, sandstone petrography and spinel geochemical data suggest that the detritus of the Hangu Formation is mainly derived from the Tethyan Himalayan source (Indian source). The absence of ophiolitic signature in petrography and U-Pb geochronology may suggest that the northern ophiolites were not exposed to provide detritus to the Early Paleocene Hangu Formation. This may also be interpreted that the ophiolites were emplaced during the Late Cretaceous on the northern Indian margin but uplifted and eroded later with the final India–Eurasia collision, which is clearly recorded in various studies all along the Indian margin. This fact also intimates the ophiolite emplacement as a possible cause of the regional Mesozoic–Cenozoic unconformity.

在Hazara-Kashmir语法的顶点暴露的早古新世的富含碎屑的Hangu组，对于提供区域中，新生代不整合面和所提供碎屑的性质的证据具有重要意义。目前的研究集中于碎屑锆石的U-Pb年龄年代测定以及尖晶石地球化学，以解释构造对物源的影响。汉沽组由帕拉斯地区周围的粗粒砂岩，砂质石灰岩，碳质页岩和红土组成，不整合地位于中生代萨马纳苏克组之上。汉沽组碎屑锆石的概率密度图与特提斯喜马拉雅碎屑记录有很强的相似性。较年轻的中生代碎屑锆石表现出与特提斯喜马拉雅岩和碎屑碎屑组合相似的特征，但与它们的同龄的Stumpata，Jidula和Denggeng / Sangdanlin地层相比却很少。定量比较反映出与特提斯喜马拉雅山的相似性，而脂溶成分关系则很差。尖晶石地球化学数据与西北蛇绿岩（Chilas Ophiolites）和Tethyan喜马拉雅岩的比较显示了汉沽沉积物的混合源体系。然而，U-Pb测年，砂岩岩相学和尖晶石地球化学数据的组合表明，Hangu组的碎屑主要来自特提斯喜马拉雅岩源（印度源）。岩相学和U-Pb年代学中没有滑石质特征可能表明，北部蛇绿岩没有暴露给古新世汉沽组碎屑。这也可以解释为，蛇绿岩是在晚白垩世时期在印度北部边缘发生的，但后来随着印度与欧亚大陆的最终碰撞而抬升并侵蚀，这在整个印度边缘的各种研究中都清楚地记录了下来。这一事实也暗示了蛇绿岩的侵占是区域中新生代不整合面的可能原因。