Distribution and gas-bearing properties of Permian igneous rocks in Sichuan Basin, SW China

MA Xinhua,LI Guohui,YING Danlin,ZHAGN Benjian,LI Ya,DAI Xin,FAN Yi,ZENG Yunxian

Fig. 2. Images of Upper Permian igneous rocks in Sichuan Basin. (a) Well DS1, 5 240 m, cryptocrystalline-microcrystalline basalt; (b) Well HS1, 4 480 m, porphyry basalt; (c) Well ZG1, 2 879 m, porphyry basalt; (d) Well ZG2, 3 178.6-3 178.8 m, vesicular basalt; (e) Well ZG2, 3 155.66-3 155.82 m, volcanic breccia; (f) Well DS001-X4, 4 918 m, tuffaceous breccia; (g) Well YT1, 5 649.26-5 649.47 m, breccia-bearing tuff lava; (h) Well YT1, 5 646.75 m, volcanic breccia; (i) Well DS1, 5 178 m, tuff.