Fig. 18

Suspended load and lofting facies associated to sandy hyperpycnal flows. a Very thick sandstone bed (35 m thick) accumulated in topographic confined areas. A encircled person for scale; b Detail of sandstones in a. Note the sub-horizontal, diffuse lamination generated by fluctuations in the rate of sediment fallout. Middle Jurassic Lotena Formation, Neuquén Basin, Argentina; c, d General view (c) and detail (d) of lobe to lobe-margin transition deposits. Note in c the top missing Bouma sequence (massive sandstones), and in d the highly continuous laminas with abundant plant debris, accumulated by fallout from lofting plumes (L facies). Deep water marine deposits, Lower Cretaceous Achimov Formation, West Siberia, Russia; e Massive sandstones with charcoal clasts transitionally covered by lofting deposits. Deep-water Miocene deposits from the Austral Basin, Argentina; f Laminated (facies S2) and climbing rippled (facies S3) sandstones. Lacustrine deposits from the Triassic Yanchang Formation, Ordos Basin, China