Fig. 3
(a) Core data shows the lithofacies of the fan delta front conglomerate in the Baikouquan Formation (T1b), Northern Slope, Mahu Depression. a. M13, 3110 m, T1b3, greyish-green sandstone-supported pebble, the gravel is weakly oriented and mainly cemented by calcite; (b) M002, 3442.35 m, T1b3, gray sandstone-supported granule-to-pebble, medium sorted with inverse grading; (c) M6, 3873.1 m, T1b2, gray gravel-supported pebble, poorly sorted with massive structure developed; (d) M2, 3418.21 m, T1b2, motley matrix-supported pebble-to-cobble, extremely poorly sorted with massive structure; (e) M001, 3472.9 m, T1b2, gravel-bearing medium sandstone at the top and gray-green gravel-supported pebble-to-cobble at the bottom; the conglomerates are generally poorly sorted with massive structure developed, a lithologic discontinuity surface exists between the conglomerate and sandstone; (f) M003, 3486.8 m, T1b2, jade-green gravel-supported pebble-to-cobble, poorly sorted with massive structure developed; (g) M132, 3274.31 m, T1b3, gray matrix-supported cobble-to-boulder, extremely poorly sorted with rounding of mainly sub-rounded, and developed massive structure and normal grading; h. X89, 2503.12 m, T1b2, gray-green matrix-supported pebble-to-cobble, moderately sorted and wide rounding of sub-angular to sub-rounded with normal grading and gravel weakly oriented arrangement developed.
