Fig. 7

Parameter characteristics of the delta front conglomerate of class A-3 in the Baikouquan Formation (T1b), Northern Slope of Mahu Depression. (a) Gravel component (%), (b) Sandstone component (%); (c) Conglomerate composition (%); (d) ① Scour and fill structure, ② Weakly gravel orientations, ③ Parallel bedding in the sandstone, ④ Trough cross bedding; (e) ① Scour and fill structure, ② Normal rhythm in three phase, ③ Lithologic interface; (f) Grain distribution histogram and cumulative grading curve; (g) Cumulative probability curve; (h) Histogram of porosity distribution; (i) Permeability distribution histogram.