Introduction to oblique bedding: Monosyncline bedding is well developed in the gravelly coarse clastic rocks in the lower part of the Changzhougou Formation, which is one of the basic characteristics of fluvial facies sedimentation. Different sediments have different types of oblique bedding, such as sediments formed by rivers. The oblique bedding is unidirectional. The oblique bedding formed under coastal (intertidal zone) conditions is bidirectional. Bidirectional oblique bedding is also It's called cross-layering.