Anisotropy and Energy Evolution Characteristics of Shales: A Case Study of the Longmaxi Formation in Southern Sichuan Basin, China

Figure 6

Failure mode of certain Longmaxi Formation shale samples.

(a) 0°

(b) 15°

(c) 30°

(d) 45°

(e) 60°

(f) 75°

(g) 90°