Contrasting development patterns of crevasse channel deposits in cretaceous alluvial successions, Korea

Stratigraphy and fluvial sedimentary facies of the Neocomian lower Strzelecki Group, Gippsland Basin, Victoria

“…Interpretation of depositional environments These poorly stratified beds with chaotically arranged plant remains occur within floodbasin sequences and their variable thickness and sheet‐like to lobate geometry suggests deposition in crevasse‐splays during rapid discharge events. Similar crevasse‐splay deposits have been reported by Mjos et al (1993) , from the Middle Jurassic Ravenscar Group of Yorkshire, UK; by Rhee et al (1993) , from the Cretaceous Eumsung and Pyonghae basins in Korea; and by Jorgensen and Fielding (1996), from the Upper Triassic Callide Coal Measures of eastern Australia. This facies can be compared with facies Sl of Miall (1978).…”

Late Pleistocene alluvial plain sedimentation in Lower Narmada Valley, Western India: Palaeoenvironmental implications

“…Channel shifts (avulsions) can be gradual or abrupt. Rapid abandonment takes when a new channel is formed in a catastrophic flood event, whereas gradual abandonment takes place when successive high water stages result in enlargement of a crevasse finally causing river diversion (Hopkins, 1985;Rhee et al, 1993). We believe that channel abandonment may have taken place by both means in the lower Narmada valley during the Late Pleistocene.…”

“…During increased aggradation rate avulsion frequency is also high (Bridge et al, 2000). Flooding processes were repetitive under the conditions of overall aggradation of the floodplain, a phenomena commonly associated with avulsion (Rhee et al, 1993). The crevasse splay deposits occur in close association with the overbank sediments, which suggests that the crevasse deposits were formed far away from the trunk channel (Rhee et al, 1993).…”

Architecture and evolution of a tectonically-induced Middle Eocene clastic wedge on the southern Tethyan carbonate shelf, North Eastern Desert, Egypt

“…This facies association is interpreted as unconfined splays based on the absence of basal scour and its lateral persistence, similar to that described by Tooth (2005) in arid areas. The presence of dispersed gravels and patches probably reflects rapid deposition from unconfined ephemeral flows, emplaced as overflows (Rhee et al, 1993). Hillier et al (2011) described similar facies as distal fan deposits in the Silurian of south central Wales.…”