区域上赋金层炭质岩系的存在和蚀变体的广泛发育，使金元素活化、富集成为可能。
The occurrence of gold rich carbonaceous rock series and the extensive development of altered rock bodies in the region made the mobilization and concentration of gold possible.
灰黑色油页岩及黑色炭质页岩是侏罗系中的优质烃源岩。
Gray-black oil shale and black charcoal shale were high quality source rocks in Jurassic system comparatively.
其岩石类型主要有云母石英片岩、石英岩、大理岩、炭质千枚岩等，因富含炭质而呈灰色，灰黑色。
The rocks of this Formation, which are black or light black for rich of c, consist mainly of mica quartz schist, quartzite, marble, carbonaceous phyllite.
应用推荐