Shanxi formation of Permo-Carboniferous coal measures in Tengnan and Datun mine area is considered as a genetic stratigraphic unit of deltaic depositional system.

• 滕南、大屯矿区石炭二叠纪含煤岩系山西组是由三角洲沉积体系单元构成的1个成因地层单位，可进一步划分为3个生长层序，代表了河控三角洲进积浅水海湾的充填过程。