SOIL SURVEY OF BANNER COUNTY, NEBRASKA. 51 



talline rocks, together with numerous small fragments of calcareous 

 sandstone. 



The Cheyenne gravelly sandy loam is not an extensive soil in 

 Banner County. It occurs as narrow strips along the dry drainage- 

 ways in the southern part of the area. The largest development is 

 along Kocky Hollow, on the east side of the Kimball-Minatare-Al- 

 liance highway. Smaller bodies lie along Long Canyon and Willow 

 Creek. 



The type is composed of alluvial terrace material, that has been 

 transported from the uplands, chiefly, during torrential rains and 

 deposited along the stream channels. 



The topography is flat. Drainage, however, is in most places ex- 

 cessive on account of the loose, open structure of the soil and sub- 

 soil. 



The type is all included in pasture lands. The native vegetation 

 consists of a sparse growth of grama, sand grass, and stipa. The 

 type is not considered very valuable even as grazing land, and it 

 has a tendency to reduce the selling price of farms in which it occurs. 



CHEYENNE SANDY LOAM. 



The surface soil of the Cheyenne sandy loam consists of 10 to 14 

 inches of brown to grayish-brown sandy loam containing a relatively 

 large proportion of fine and very fine sand and some fine gravel. 

 The organic content of the surface 6 inches is comparatively high, 

 the upper layer of the soil being darker on this account. 



The upper subsoil differs little from the surface material in tex- 

 ture, though gradually becoming lighter in color. The subsoil, below 

 about 24 inches, is a loose, porous mass of sand and gravel much 

 resembling that of the gravelly sandy loam and loam types. The 

 organic matter is usually entirely lacking below 30 inches. 



The soil is of small extent in this county, although it occupies a 

 larger acreage than any of the other Cheyenne types. It occurs 

 chiefly along the larger drainage ways, contiguous to bodies of 

 Cheyenne gravelly sandy loam, in the southern part of the area. 

 One of the largest bodies lies along Willow Creek. A typical 

 development is mapped along Lawrence Fork in the southeastern 

 part of the county, and narrow strips along Chalk Creek, Hack- 

 berry Creek, Bighorn Gulch, Indian Springs Canyon, and Long Can- 

 yon. The type represents alluvial terrace material, derived in the 

 same manner as the other Cheyenne types. 



The topography is flat with a gentle slope toward the stream chan- 

 nels. Drainage is in most places excessive, on account of the loose 

 porous character of the soil and subsoil. 



The type is of little agricultural importance in this county, and 

 only a few small patches are under cultivation. Practically all the 



