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青海侏罗纪的含煤地层集中地分布于祁连山中部、柴达木盆地北缘、东昆仑南缘断裂北侧三个条带内。除此,西秦岭地区沿柴达木盆地东侧也有零星分布(图1)。含煤地层内发现有植物、孢粉、轮藻、淡水瓣鳃、叶肢介、鱼、昆虫等门类化石:迄今未发现海相动物化石,而被公认为陆相沉积。覆盖于煤系之上的红层,时代归属争议颇大,不拟赘述:现将中、下统含煤地层的划分及时代归属的意见阐述于后。
The Jurassic coal-bearing strata in Qinghai are mainly distributed in the central part of the Qilian Mountains, the northern margin of the Qaidam Basin and the north of the east margin of the Eastern Kunlun. In addition, the western Qinling area along the east side of the Qaidam Basin also sporadic distribution (Figure 1). Fossils such as plants, pollen, charophytes, freshwater petals, leaf extremities, fish, insects and other species found in coal-bearing formations: Marine animal fossils have not yet been discovered and are generally recognized as continental sediments. Covering the red beds above the coal series, the era belongs to a considerable amount of controversy and is not meant to be repeated: Now the interpretation of the classification of middle and lower coal-bearing strata and the ownership of the times is elaborated.