Fig. 15

Examples of facies related to pebbly hyperpycnal flows. a Facies B1 is composed of matrix-rich clast supported conglomerates with imbricated clasts. Middle Jurassic Los Molles Formation, Argentina; b Bedload “overspill” on proximal levee deposits. Note clast imbrication. Eocene Pampatar Formation, Margarita Island, Venezuela; c Matrix-rich, imbricated conglomerates (facies B1). Lower Cretaceous Centenario Formation, Argentina; d Asymptotic cross bedding with floating pebbles. Note the coarsening upward trend, which is typical of sediment-laden turbulent flow deposits; e Fine- to medium-grained sandstones with floating and imbricated pebbles. Examples d and e are from lacustrine deposits of the Pleistocene Huarenchenque Formation, Argentina; f Massive, fine-grained sandstones (facies S1) sharply overlain by heterolithes composing a Bouma top-missing sequence (1). The laminated interval on top is interpreted as lofting fallout deposits (facies L). Middle Jurassic Los Molles Formation, Argentina. i: Imbrication