Sedimentary characteristics of mixed source fine-grained gravity-flow and its significance for shale oil exploration in a lacustrine depression basin: A case study of the Chang 73 Sub-member of the Triassic Yanchang Formation in Ordos Basin, NW China - Lin Wang; Qiqi Lyu; Linhan Li; Jun Liu; Shunshe Luo; Xuehu Sun; Lei Zhang; Xinshou Xu (Sedimentary Geology, 2024)