Texture (grain size, shape, sorting): Rounded gravel, poorly sorted grains larger than 2mm Composition (detrital, biochemical, chemical): Detrital sediment grains; Rock fragments and/or quartz grains and/or feldspar grains and/or clay minerals Other distinctive properties: Consolidated gravel; Composition and size of clast may vary Common depositional environment: Deposited on erosion surface; mark marine transgressions; Associated with fluvial deposits