Fluvial architecture and sequence stratigraphy of the Eocene to Oligocene Iwaki Formation, northeast Japan: channel-fills related to the sea-level change

Climatic signature of cyclic fluvial architecture from the Quaternary of the central Po Plain, Italy

“…Recent sequence-stratigraphic work on fluvial successions has shown that in the landward reaches of the coastal plain the transgressive surface generally separates amalgamated channels below from more aggradational channels above (Wright and Marriott, 1993;Zaitlin et al, 1994;Olsen et al, 1995;Takano and Waseda, 2003;Komatsubara, 2004;Plink-Björklund, 2005). Following these models, we are inclined to interpret the thick overbank units with ribbon-shaped sand bodies that overlie the sheet-like fluvial bodies as undifferentiated transgressive (TST) and highstand (HST) deposits.…”

“…Low accommodation during lowstand (and early transgressive?) phases favoured lateral migration of river channels, with widespread development of scour-and-fill episodes (Komatsubara, 2004). However, the multi-storey character of channelfill deposits of central Po Basin, which may exceed 30 m in composite thickness, suggests continuous creation of accommodation by tectonic subsidence, which thus played a fundamental role in shaping T-R sequences.…”

Alluvial terraces on the Ionian coast of northern Calabria, southern Italy: Implications for tectonic and sea level controls

“…They pass upward into clast-supported, trough crossstratified conglomerates characterised by symmetrical concave-up bases; averaged sizes of thickness and width of individual units range from 0.5-0.8 and 5-6 m, respectively. They are interpreted as a multistorey channel fill, characterised by fast migration and fill of small and concave-up channels (Ramos and Sopeña, 1983;Komatsubara, 2004). These deposits grade upward into and alternate with pebble-grade, clast-supported conglomerates; in turn, they alternate with laminated sandstone beds and lenses showing rare rootlets and possible pedogenetic traces, thought to represent floodplain of a braided river stream whose main channels shifted laterally (Vincent, 2001).…”

Sedimentary history of the western Bohai coastal plain since the late Pliocene: Implications on tectonic, climatic and sea-level changes

“…For fluvial systems close to coastal area, sea-level fluctuations have been thought as another important factor influencing the sedimentary architecture because of marine water incursion, as well as the changes in the base level of fluvial systems (Amorosi et al, 1999;Komatsubara, 2004;Liu et al, 2009;Tedesco et al, 2011). The study site was located on an active tectonic-controlled coastal setting during the Pliocene-Quaternary period.…”