Analyzing and Mapping Natural Landscape Factors—Ozark Province 57 
have been eroded have rounded crests. Vestiges of karst top- 
ography remain on the higher hills. Moderate to high differential 
resistance within the Jefferson City-Cotter and between the vari- 
ous formations and members of the St. Peter-Kinderhook Geo- 
logic Region has given rise to rock terraces on the hillsides and, 
in the St. Peter-Kinderhook, to high local relief. Where the 
Chattanooga shale outcrops below the Burlington-Boone, bluffs 
develop in the limestone by the undercutting of the shale. 
The local relief of the White River Hills Region is mostly 
between 500 and 600 feet, this being characteristic of the part 
within the Burlington-Boone Cap Geologic Region. To the north- 
east the relief decreases with increasing distance from the White 
River and with the disappearance of the limestone and chert 
caps from the Jefferson City-Cotter dolomite. The lowest relief, 
200 to 300 feet, is in the west where the Jefferson City-Cotter 
lies uncapped over a small area. In the east, which is included 
in the St. Peter-Kinderhook Geologic Region, the relief is from 
600 to 800 feet and reaches a maximum where small outliers 
of Burlington-Boone protect the weak St. Peter sandstone near 
the White River. High and moderate angles of slope (six per 
cent and more) characterize the White River Hills Region. A 
Study of Figures 6 and 8 shows two definite areas, in one of 
which 75 per cent or more of the land- has these slopes; in the 
other 50 to 75 per cent. The percentage of land in steep slopes 
only (15 per cent and more) also is high, usually varying from 
25 to 75 per cent plus??. Only in the east, the area of highest 
relief, does the percentage of land in steep slopes fall below 
25 per cent. 
An attempt to delineate regional boundaries on a quantitative 
basis shows the impossibility of using the same criteria through- 
Out. The northwestern boundary of this region incloses land of 
which at least 50 percent is in steep slopes; the north eastern 
Corresponds to the line which includes within its limits areas 
22. Figure 9, 
