When waves start to "feel" bottom (at a depth of 1/2 of their wavelength) they cause a back-and-forth sense of motion at the sediment surface which creates wave symmetrical wave ripples. Sloshing act...When waves start to "feel" bottom (at a depth of 1/2 of their wavelength) they cause a back-and-forth sense of motion at the sediment surface which creates wave symmetrical wave ripples. Sloshing action caused by storm events causes wavy and complexly cross-cutting layers in hummocky cross stratification. Changes in flow strength and direction result in heterolithic bedding and/or herringbone cross-bedding.
Bedforms are three dimensional structures in sediment; if preserved or partially preserved they form sedimentary structures. A predictable sequence of bedforms and structures for in response to unidi...Bedforms are three dimensional structures in sediment; if preserved or partially preserved they form sedimentary structures. A predictable sequence of bedforms and structures for in response to unidirectional flows as a function of grain size, flow depth and velocity.
Deserts form in arid environments where water is limited and wind is the primary mechanism for sediment transport. Desert deposits are characterized by thick sets of cross-bedded sandstones and a com...Deserts form in arid environments where water is limited and wind is the primary mechanism for sediment transport. Desert deposits are characterized by thick sets of cross-bedded sandstones and a combination of evaporites, mud, gravel, and fluvial deposits in interdune areas.
