Fig. 10

Field photos of the Wulalike Formation. A: The yellow dashed line outlines the tuffaceous layer in the shale on the Laoshidan outcrop. B: The red arrow points to a tuffaceous layer in the shale on the Guanzhuang outcrop; C: Slump breccia in gravity flow sedimentation on the Laoshidan outcrop; D: Turbidity sedimentation in gravity flow sedimentation on the Laoshidan outcrop.