Slide 41 of 66
Notes:
The next few slides show simulated landscape development when some of the rock into which the landscape is being eroded is sufficiently resistant to chemical weathering that some rock becomes exposed in patches. The rock hardness is assumed to be a 3-D fractal, so that resistant knots of rock become exposed and eventually eroded away. The simulation assumes that resistant rock will eventually be subject to weathering and mass wasting if slope angles become steep enough.
In this early stage of incision starting from a low relief level fractal surface, erosion rates are low enough that weathering has been able to keep pace with erosion except for a few locations alongside the major channels