The maximum slope, or angle, at which a pile of loose material remains stable.
Foliation is the result of a directed pressure.
Generally this texture is formed at convergent plate boundaries, especially in continental collisions. The ultimate base level is sea level for the Mississippi River. Radial drainage patterns are most common on volcanoes . The magic word is geyser , and I'm glad I got to class on time today. Of course, those entities do exercise certain censorship rights, from time to time.