Central Guizhou and its adjacent areas experienced basement,proto-Tethys,paleo-Tethys and neo-Tethys tectonic cycles.The six structural stages have been further recognized as following,the early rift stage,platform-passive margin stage(Nanhuanian-Silurian),platform-intra-continental rift stage(Devonian-Permian),stable platform stage(early-to mid-Triassic),continental fault-depression stage(late Triassic-Paleogene),and fault-fold rise stage(Neogene-Quaternary).The key tectonic changes controlling the tectono-stratigraphic framework of the Central Guizhou and adjacent areas are the Duyun,Guangxi,Central Indosinian,Late Yanshanian and Himalayan movements.The structures in study areas are characterized by differential deformation.Four structural belts can be recognized as the Xuefeng,Majiang-Kaili,Qingzhong and northwest Guizhou tectonic belt.The structural segmentation,controlled by a series of NW-WNW transfer zones,is also apparent in this district.Three types of cap-rocks may develop in the Central Guizhou and adjacent areas as following:salt rock,mudstone and shale,and condensed sandstone.The distribution of salt rock is limited in the area.The regional caprocks with good reservation are mudstone and shale of the Lower Cambrian and Mid-Lower Silurian,as well as Qingxudong Formation limestone and marl of the Lower Cambrian.