Fig. 9From: Preservation conditions and potential evaluation of the Longmaxi shale gas reservoir in the Changning area, southern Sichuan BasinThe occurrence characteristics of joint points in different strata in the study area. J1z is the Ziliujing formation of the Lower Jurassic, T3x, T1j and T1f are the Xujiahe, Jialingjiang, and Feixianguan formations of the Upper and Lower Triassic, P2l is the Leping formation of the Upper Permian, and S1l is the Longmaxi formation of the Lower SilurianBack to article page