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<br /> Figure <br />W <br />~ 3-2 <br />0 <br />~ <br /> 3-3 <br /> <br />3-4 <br />3-5 <br /> <br />3-6 <br /> <br />3-7 <br /> <br />3-8 <br /> <br />3-9 <br /> <br />4-l <br /> <br />4-2 <br /> <br />4-3 <br /> <br />List of Figures (continued) <br /> <br />Page <br /> <br />Relative relief map of the study area depicting relative <br />relief in meters per square kilometer (from Johnson, <br /> <br />1982). . . . . . . . . . . . . . . . . . . . . -. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 <br /> <br />Landforms map of Mancos Shale terrain between Book Cliffs <br />to the north, Highline Canal to the south, Mt. Garfield <br />to the east and West Salt Creek to the west (from <br /> <br />Johnson, 1982)........................................... 36 <br /> <br />Part A................................................... 37 <br />Part 8..........................................,........ 38 <br />Part C................................................... 39 <br />Part D............................ '....................... 40 <br /> <br />Cross sections (from Johnson, 1982)...................... <br /> <br />Maps of eight drainage basins in Grand Valley, Western <br />Colorado (from Johnson, 1982)....................... . . . . . <br /> <br />41 <br /> <br />42 <br /> <br />Typical main channel longitudinal profile and ranges of <br />channel gradients (from Johnson, 1982)..,................ <br /> <br />The three types of valley cross sections present in the <br />measured drainage basins (from Johnson, 1982)............ <br /> <br />45 <br /> <br />47 <br /> <br />Cross section of dissected pediment remnants near Soldier <br />Creek (from Carter, 1980)................................ <br /> <br />50 <br /> <br />Proposed valley evolution in the study area (from <br />Johnson, 1982)........................................... <br /> <br />53 <br /> <br />Spatial variation of EC derived from 1,1 sediment-water <br />mixtures of the surface crust of Mancos Shale in the <br />Price River Basin (after Ponce and Hawkins 1978)......... <br /> <br />Spatial variation of EC in the surface (0-13 em) of allu- <br />vial bed material in Mesa Creek.......................... <br /> <br />56 <br /> <br />58 <br /> <br />Spatial variation of EC of l,l sediment-water mixtures of <br />a Mancos Shale channel bank in the Price River Basin, <br />Utah (after Whi te, 1977)................................. <br /> <br />59 <br /> <br />4-4 Means and 95 percent confidence intervals about the means <br />of Na1+ (a) and NAl+ + Mg2+ (b) abundance ratios from <br />1,99 solutions of Mancos Shale and alluvium (after <br /> <br />Laronne, 1977)........................................... 60 <br /> <br />ii <br />