Structural and Climatic Controls on Fluvial Depositional Systems: Devonian, North‐East Greenland

Fluvial style variations in the Late Triassic–Early Jurassic Elliot formation, main Karoo Basin, South Africa

“…Although recent advances in hydrological and geomorphological studies of dryland river systems, especially in Australia (e.g., Tooth and Nanson, 1995;Thomas, 1997;Knighton and Nanson, 1997;Reid and Frostick, 1997), provide adequate data for integration into depositional models, sedimentological modelling of such systems is still in its infancy due to the lack of empirical data on the preserved sedimentary structures and of the architecture of these ephemeral fluvial deposits. The sedimentary structures and architectures of the Upper Elliot Formation have much in common with those described from similar studies of ancient ephemeral stream deposits (e.g., McKee et al, 1967;Steel, 1974;Alien and Williams, 1979;Turner, 1981;Sneh, 1983;Stear, 1983Stear, , 1985Tunbridge, 1984;Flint, 1985;Langford and Bracken, 1987;Dreyer, 1993;Luttrell, 1993;Olsen and Larsen, 1993;Miall, 1996;Martin, 2000). Unfortunately, the depositional models tend to be simplistic, and more importantly, these models are, without exception, based on examples that are areally restricted, and thus are not really applicable for vast areas like major foreland basins.…”

Late Permian to Middle Triassic correlations and palaeogeographical reconstructions in south-western European basins: New sedimentological data from Minorca (Balearic Islands, Spain)

“…However, in continental environments, it is difficult to differentiate autocyclic factors (resulting from local processes such as avulsion) from allocyclic factors (climate, eustatic effects, tectonics and sediment supply), leading to stratigraphic base-level variations (Olsen and Larsen, 1993;Postma et al, 1993;Shanley and McCabe, 1998;Dalrymple et al, 1998;Bourquin et al, 2002). Erosional surfaces are numerous in most continental environments and need to be classified.…”

The Geology of Fluvial Deposits

“…This will migrate laterally or undergo avulsive switches in position in response to pulses of fault movement. Todd and Went (1991) and Olsen and Larsen (1993) described possible ancient examples of the lateral migration of rivers in response to tectonic tilting. 11.5.…”