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

西北罗纪煤系层中主要的生烃显微组分是孢子、角、藻类、沥青、碎屑类脂、基镜等，而树脂、等早期低熟生油组分含量很低。

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.

烃源岩主要生烃显微组分为基镜，少量孢子、角和碎屑壳。