The limestone reservoirs of Da′anzhai group in Meddle Sichuan oil field have rich oil and gas resource.

The Tournaisian productoid brachiopods,discovered at the base of the Luzhai Formation of the Jinzishan Section,Xing′an county,Guangxi,South China,including a new,a conformis and six indeterminate species,plus two forms described in open nomenclature,were described in this paper.

Determation of the Early Carboniferous Shideng Formation and Late Permian Yangbazhai Formation in the Lanping area， western Yunnan;

On the Contact Between the Carboniferous Yutangzhai Formation and the Underlying Pingzhang Formation in Southwest Yunnan;