|
These features are downstream migrating sands oriented transversly to the flow direction in relatively straight sand-rich channels. Transverse bars commonly occur in braided streams where the gradient is insufficient to remove the sediment. The material moves up the slope along the upstream bar flanks and cascades down the lee side forming avalanche or tabular cross-bedding. Stratification is planar, and the crest may be eroded into several topographic highs during low flow.
Although the transverse and lateral bars are similar, transverse bars tend to migrate downstream while lateral bars tend to accrete laterally into the channel.
|
