The oil source of oilsand in northern Kashi sag came from Jurassic hydrocarbon source whose reservoir-forming stage might be from Miocene to Pliocene.
喀什凹陷北部油砂的油源来自于侏罗系烃源岩，成藏期为中新世至上新世。
2
Oilsand has been found in many ground structures in northern Kashi sag, which distributed mainly in Miocene Anjuan andPakabulake Formation, secondly in Lower Cretaceous Kzlesu Formation.