-&^ y 



Figure B-l— Alluvial fans (A) at mountain front (adapted from Peterson 

 1981). 



Hillslope Profile 



Valley, 

 floor or 



depression ] 



Lowland 

 I 



Upland 



Hillslope 



i Top of upland: 

 narrow ridge to 



i broad platform 



Backslope 



Footslope 

 Toeslope 



Colluvial and alluvial deposits 

 of footslope and toeslope 



deposition 

 dominant 



erosion 

 dominant 



Figure B-2— Hillslope components in profile (adapted from Gile and 

 others. 1981). 



49 



