Gravel fabric in a sub-Himalayan braided stream

A Geoarchaeological Study of the Middle and Upper Pleistocene Levels at Canteen Kopje, Northern Cape Province, South Africa

“…Depositional patterns within alluvial sequences and a range of other process-derived deposits have been dealt with by many authors (e.g., Krumbein, 1939;Andrews & Smithson, 1966;Tandon & Kumar, 1981;Butler, 1982;Schiffer, 1983;Yagishita & Jopling, 1983;Petts & Foster, 1985;Bluck, 1987;Deitrich, 1987;Naden & Brayshaw, 1987;Schick, 1991Schick, , 1997Petraglia & Potts, 1994;Evans, 2000;Bridge, 2003;Morton, 2004;Millane, Weir, & Smart, 2006;Kostic & Aigner, 2007;Hodge, Brasington, & Richards, 2009). Depositional patterns within alluvial sequences and a range of other process-derived deposits have been dealt with by many authors (e.g., Krumbein, 1939;Andrews & Smithson, 1966;Tandon & Kumar, 1981;Butler, 1982;Schiffer, 1983;Yagishita & Jopling, 1983;Petts & Foster, 1985;Bluck, 1987;Deitrich, 1987;Naden & Brayshaw, 1987;Schick, 1991Schick, , 1997Petraglia & Potts, 1994;Evans, 2000;Bridge, 2003;Morton, 2004;Millane, Weir, & Smart, 2006;Kostic & Aigner, 2007;…”

“…The analysis of clast orientation is a well-established method for distinguishing depositional processes. Depositional patterns within alluvial sequences and a range of other process-derived deposits have been dealt with by many authors (e.g., Krumbein, 1939;Andrews & Smithson, 1966;Tandon & Kumar, 1981;Butler, 1982;Schiffer, 1983;Yagishita & Jopling, 1983;Petts & Foster, 1985;Bluck, 1987;Deitrich, 1987;Naden & Brayshaw, 1987;Schick, 1991Schick, , 1997Petraglia & Potts, 1994;Evans, 2000;Bridge, 2003;Morton, 2004;Millane, Weir, & Smart, 2006;Kostic & Aigner, 2007;Hodge, Brasington, & Richards, 2009). According to Petts and Foster (1985), these patterns (dip directions/orientations and angles, called imbrication) occur as a result of the final stages of artifact (or clast) deposition; if flow regimes are sufficiently low, imbrication will be absent (Deitrich, 1987).…”

Depositional character and preservation potential of coarse-grained sediments deposited by flood events in hyper-arid braided channels in the Rift Valley, Arava, Israel

“…The models, several of which refer to coarse-grained braid systems, rely on the 3-dimensional description of specific sections selected to be type facies (e.g., the proximal gravelly Donjek and the distal sandy Platte types). Coarse, proximal channel sediments are clast-supported and imbricated, subparallel and infrequently cross-stratified (Doeglas, 1962;Miall, 1977;Miall, 1978;Tandon and Kumar, 1981). Arid, coarse-grained braided facies have not been studied, although some of the deposits reported in the sedimentary record are of arid origin (e.g., Bluck, 1980;Frostick et al, 1988;Spalletti and Piñol, 2005).…”

Horizontal stability of the Australian continental drainage divide in south central New South Wales during the Cainozoic

“…Palaeocurrent data from sub-basaltic, imbricate quartz gravels on 'Reidsdale' farm (GR 971865) indicate a flow direction orthogonal to the trend of the overlying Bevendale Basalt (Fig. 2) and may have resulted from diverging flow across a bar (Rust 1972) or from flow in an inactive channel which itself diverges from the currently active channel (Tandon & Kumar 1981).…”