Middle Permian
2.Study on Early-Middle Permian Reef and Its Sequence Stratigraphy in Maerzheng Area, Eastern Kunlun
8.Based on comprehensive analysis of the outcrops and interpretation of seismic data in this area,six detachments are identified,which are the Middle Permian Lucaogou and Hongyanchi Formations,the Lower Jurassic Badaowan Formation,the Middle Jurassic Xishanyao Formation,the Cretaceous Tugulu Group,the Palaeocene Anjihaihe Formation and the Neocene Taxihe Formation from the deep to the shallow.
9.Take for example the Huangjiankeng-Hashu rich copper belt occurring on the contact surface between the base of the Emeishan basalt and limestone of the Middle Permian Maokou Formation, the paper discusses the geological conditions of this new type of basalt copper deposit and the effects of the eruption of the Emeishan basaltic magma on the concentration of elemental Cu (Au, Pb, Zn, Pt, Pd, Sb, Fe etc.) and modification of mineralization by late-stage hydrothermal fluids.

