7) is a large subaqueous dune field; dunes have wave-lengths of 10 to 100 m and heights of 0.5 to 5 m (Kostaschuk et al., 1995; Currie and Mosher, 1996).
1), there is a series of nearly symmetrical, very large subaqueous dunes that have wavelengths between 100 and 300 m, covering an area of 2.5 k[m.sup.2] in 170 to 210 m of water (Figs.
For example, the very large subaqueous dunes of Boundary Pass appear to be migratory and occur in an area of seabed cables and a proposed gas pipeline.
Trough cross-stratification gives evidence of the accumulation of the sandy material in migrating lingoid (lunate) subaqueous dunes subjected to traction currents (Reineck & Singh 1980; Nichols 1999; Ponten & Plink-Bjorklund 2007).
These fine-grained to gravelly sandstones, 3.7 m thick, are dominated by trough cross-stratification structure, which indicates the transport and sedimentation of sand material in the lingoid subaqueous dunes, under the influence of traction currents.
Varigrained, often coarse-grained textures of deposits, their sedimentary structures indicating the development of erosional surfaces and channels, lingoid subaqueous dunes and bars, the dominant current direction and channel orientation to the south, southeast and southwest, as well as the absence of tidal features (e.g.