滇西地区哀牢山变质带以东,康滇古陆以西的三角形地带内,已正式命名建立的泥盆系岩石地层学名称共有20个(其中“组”级18个,“段”级2个)。在不大的范围内,一个系的岩石地层名称这么多,某种程度上反映了该区沉积类型的多样和复杂。其中,剑川—玉龙雷山一线以西,是一套浅变质岩系,中、上部是硅质灰岩和白云岩,下部是板岩、千枚岩, Within the Triassic zone to the east of the Ailao Mountain metamorphic belt and the west of the Kang-Dian ancient continent in western Yunnan, there are totally 20 Devonian stratigraphic names that have been officially named (of which 18 are in the “Group” class, and 2 in the “Segment” class 2 One). To a very small extent, the name of a department rock formation so much, to some extent reflects the diversity and complexity of sedimentary types in the area. Among them, Jianchuan - Yulongleishan west line, is a set of shallow metamorphic rocks, the middle and upper siliceous limestone and dolomite, the lower part is slate, phyllite,