The Zhob ophiolite is divided into Ali Khanzai, Omzha, and Naweoba blocks. The ophiolite geology comprises various lithological units including basalt–chert and hyaloclastite mudstone units. The basalt–chert and hyaloclastite mudstone units consist of thick lava and pelagic sediments. On the basis of petrology and geochemistry, the lavas of basalt–chert unit can be divided into tholeiitic basalt, trachybasalt, basaltic andesite and dacite, and that of hyaloclastite mudstone unit into more alkaline foidite, picrobasalt, and tephrite-basanite. The tholeiitic rocks have a flat N-MORB-normalized pattern with enrichment of Th and depletion of Nb compared to other immobile elements and thus indicate a subduction zone component in the rocks. They have chondrite-normalized REE patterns typical of N-MORB. The alkaline rocks have depleted chondrite-normalized HREE compared to N-MORB similar to those of OIB. Our geochemical results suggest that the tholeiitic rocks may have formed in a supra-subduction zone setting while the alkaline rocks are intraplate setting that was influenced by a subduction component. The Zhob lavas therefore are likely to represent the floor of a branch of the Ceno-Tethys Ocean and may have obducted over the Indian Plate passive continental margin during the Late Cretaceous.

Zhob蛇绿岩分为Ali Ali Zanzai，Omzha和Naweoba块。蛇绿岩地质包括各种岩性单元，包括玄武岩-硅质岩和玻碳岩泥岩单元。玄武岩-硅质岩和透明质岩泥岩单元由厚厚的熔岩和上层沉积物组成。从岩石学和地球化学的基础上，玄武岩-cher石单元的熔岩可分为生胶质玄武岩，曲风玄武岩，玄武质安山岩和辉绿岩，而透明质岩泥石质单元的熔岩分为碱性更高的钠长石，云母玄武岩和软铁矿-玄武岩。与其他固定元素相比，高脂岩具有平坦的N-MORB归一化模式，具有Th富集和Nb耗尽的特征，因此指示岩石中有俯冲带成分。它们具有典型的N-MORB球粒晶归一化REE模式。与OIB相似，与N-MORB相比，碱性岩石的球粒晶归一化HREE减少了。我们的地球化学结果表明，冲积岩可能是在俯冲带上形成的，而碱性岩是板块内的，受到俯冲成分的影响。因此，霍布火山熔岩很可能代表了塞诺-特提斯海洋的一个分支的底面，并且可能在白垩纪晚期被印度板块被动大陆边缘上空侵扰。