Factors controlling microfractures in black shale: A case study of Ordovician Wufeng Formation-Silurian Longmaxi Formation in Shuanghe Profile, Changning area, Sichuan Basin, SW China |
Dazhong DONG,Zhensheng SHI,Shasha SUN,Changmin GUO,Chenchen ZHANG,Wen GUO,Quanzhong GUAN,Mengqi ZHANG,Shan JIANG,Leifu ZHANG,Chao MA,Jin WU,Ning LI,Yan CHANG |
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Fig. 8. Types and characteristics of beddings in Wufeng-Longmaxi Formations of the Shuanghe profile. (a) unclear beddings; (b) obscure beddings; (c) relatively clear beddings; (d) clear beddings. |