Fig. 2From: Sedimentary architecture of shallow-water fan-delta front in a lacustrine basin: Sangyuan section of Lower Cretaceous Xiguayuan Formation, Luanping Basin, northeast China3D digital model of the Sangyuan section that was established based on UAV observations data. From the bottom to top, the thickness of gravel-sand deposits gradually decreases, and then it increases according to fluctuations of the lake level. A symmetrical ripples that indicate a shallow-water environment above the wave base; B cross-laminated sandstones reflecting actions of traction currents; C symmetrical ripples; D coarse-grained sediments; E mud cracks that are indicative of a subaerial environment; F slump structures associated with gravity flow depositsBack to article page