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烃显微组分是孢子、角、藻类、沥青、碎屑类脂、镜等，而树脂、木栓等早期低熟油组分含量很低。

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.

烃源岩主烃显微组分为镜，少量孢子、角和碎屑壳。