The document defines and describes various types of geological deposits and depositions. It explains that a beach is a deposit of sand next to a body of water. A sand dune is a mound of sand deposited by wind. Loess is a deposit made of fine layers of glacial silt and sand deposited by wind. A moraine is a ridge of till deposited at the edge of a glacier. A sandbar is a long ridge of sand in a river or near a shore. A talus slope is a cone-shaped deposit at the bottom of a hill caused by gravity. A delta is a finger-shaped deposit of sediments at the mouth of a river. A levee is a ridge-like deposit of sediments on