Main macerals of hydrocarbon generation are sporinite, cutinite, alginite, bituminite, liptodetrinite and desmocollnite in source rocks from Jurassic coal measure in Northwest China.

西北地区侏罗纪煤系地层中主要的生烃分是孢子、角质、藻、沥青质、脂、基质镜质等，而树脂、木栓质等早期低熟生油分含量很低。

A small quantity of sporinite and cutinite were identified in addition to the majority of the hydrocarbon-forming micro-components that mainly occurred as matrix vitrinites.

烃源岩主要生烃分为基质镜质，少量孢子、角质和壳质。