Traction Carpet Geology

These layers have been attributed to deposition from a succession of collapsed inertia layers traction carpets.

Traction carpet geology.

They have a convex up velocity profile and comprise a lower frictional and an upper collisional region. The spaced stratification that characterizes some thick deep water sandstones consists of a stack of layers 5 10 cm thick that are inversely graded at their base and structureless at their top. Thus the grains and clasts interact with the substratum during transport. And by overconcentration of a normal low density bedload.

The thickness of a traction carpet stratum is therefore determined by the cumulative amount of sediment settled during the lifespan of a traction carpet and can be much larger than the thickness of a moving. Two mechanisms of traction carpet initiation are discussed. Discussion and reply. Traction carpet stratification in turbidites.

Traction carpets are highly concentrated bedload layers that are developed beneath and driven by turbulent overlying flows. The short video is of wind ripples where sand moves in a traction carpet viewed best in full screen. Traction carpets are highly concentrated bedload layers that are developed beneath and driven by turbulent overlying flows. Freezing of this traction carpet yields an inversely graded layer.

Deposition from the traction carpets occurs via progressive aggradation of the bed rather than via en masse freezing while the downward grain flux from the overlying flow maintains the. The shearing traction carpet is supposed to become stratified with particle size increasing upward. At the threshold velocity when the resultant fluid force on grains is greater than gravity grains begin to roll slide and jostle along the bed like a moving carpet the traction carpet. By contrast saltation a related sediment transport process moves grains across the bottom by bouncing or hopping.

They have a convex up velocity profile and comprise a lower frictional. Traction is the geologic process whereby a current transports larger heavier rocks by rolling or sliding them along the bottom.