Bolson (Intermontane Basin) 



Mountain upland 



lower 



Piedmont slope 

 middle 



deposition dominant >- Basin floor 



' ephemeral or playa 



lake plain 



relict lake plain 



alluvial flats 

 and plains 



Piedmont slope 



/\ 



rock pediments and erosion 

 surfaces on older basin fill 



alluvial fans and 

 cadlescent-alluvial-fan 



piedmont (BAJADA) 

 I 



piedmont 

 angle 



erosion dominant 

 on upper part 



deposition dominant on 

 middle and lower parts 



tectonic deformation 

 locally affects slope 

 form and process 



stream channels 

 and flood plains 



Figure B-3— Bolson and included landforms (adapted from Gile, et al. 

 1981). 



50 



