Giant Current Ripples
Giant current ripples are active channel topographic forms up to 20 m high, which develop within near-thalweg areas of the main outflow valleys created by glacial lake outburst floods. Giant current ripple marks are large scale analogues of small current ripples formed in sandy stream sediments. The giant current ripple marks are important depositional forms in diluvial plain and mountain scablands. Descriptive features Up to the present, hundreds of locations of the fields of giant current ripples have been discovered in North America and Northern Asia. Here is a brief description of main characteristics of this relief and its sediments at the key, today most often visited, sites in the Altai and Tuva with the necessary references to the chief publications for the other territories. #Wave height from 2–20 m with the wavelength from 5–10 m to 300 m #Ripple marks are stretched transversely to the diluvial floods. They are clearly and regularly asymmetric. The proximal slope ...
[...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]