约距今一亿八千万年的中生代上三叠纪，上海同苏南地区都是古老的陆地。
巴颜喀拉山位于研究区内，该地体沉积序列主要形成于中、晚三叠世。
1·Emergence stratums are of Sinian, Devonian, Permian, Trias and intrusive granite dike and coarse - grained granite dike.
出露地层为震旦系、泥盆系、二叠系、三叠系以及侵入的花岗岩脉和花岗伟晶岩脉。
2·Sediment cover consists of Trias, Jurassic, Tertiary and Qaternary, but Jurassic is the mainly exploited stratum.
盆地沉积盖层由中生界三叠系、侏罗系、新生界第三系、第四系组成，侏罗系是其主要勘探目的层。
3·There was a terrestrial facies lake basin in study area and mainly developed clastic rock during the late Trias.
研究区晚三叠系为陆相湖盆沉积，以发育陆源碎屑岩系为主。