Sedimentation and Erosion Algorithms

A siliciclastic sediment supply can be introduced simultaneously with a depth-dependant "carbonate" production that is reduced by siliciclastic poisoning. Pelagic sediment is produced as a regionally constant sedimentation that is dissolved below the calcite compensation depth. Evaporites are deposited during dry episodes as sabkha and/or basinal precipitates.

Siliciclastic and carbonate sediment is transported by traction and suspension processes.

Traction-load processes are modeled with an equilibrium profile that is defined by slopes with the fluvial plain, coastal plain, shoreface, and marine depositional slope.

Suspended sediments are transported by a dispersion process within the marine environment. The width of coastal plain and depth of fairweather wavebase also control the equilibrium profile and distribution of suspension deposits.

Unstable sediment packages are bypassed into the basin by slumping and mass wasting processes to form slumps, basin floor fans, and slope fans. PHIL uses an algorithm for gravity-flow sedimentation based on conservation of potential and kinetic energy and observations of modern turbidite events.

The erosional processes of headward erosion, surface beveling, channel incision, marine currents, and user-defined erosion can be modeled.