SOIL SURVEY OF JACKSON COUNTY. 
84 
which have been modified by the action of water ami deposited 
in the form of stream terraces or valley fill. Accumulations of 
vegetable matter have also given rise to extensive bodies of 
peat, and smaller accumulations of organic matter have modified 
several of the various soil formations. 
Including rough stony land and peat, twenty-eight types of 
soil were recognized and mapped in Jackson county. 
The Knox series includes the light-colored upland soils which 
are largely of loessial origin, and which include the best exten¬ 
sive tracts of land in this region. Knox silt loam, with its steep 
phase was mapped. 
The Boone series includes soils derived directly from the 
weathering of the Potsdam sandstone. In some cases some shale 
and also loess had modified some of the types. The types mapped 
are Boone loam, fine sandy loam, fine sand, sand, with phases 
of some of these types. 
Lintonia soils are made up chiefly of secondary loess now 
found as terraces throughout the region of Knox soils. The 
types mapped are Lintonia silt loam, loam, and fine sandy loam. 
Bates soils are very similar to the Knox, except they are dark- 
colored, semi-prairie soils. The silt loam was the only type 
mapped. 
The Plainfield series consists of light-colored alluvial soils 
found as terraces, valley fill, or outwash plains. In this county, 
the following types were mapped: Plainfield fine sandy loam, 
sandy loam, sand, and fine sand. 
The Vesper series consists of residual soils which have been 
derived largely from a shaly phase of the Potsdam sandstone, 
and which usually have a subsoil containing considerable clay 
or shaly material. They are nearly level, and usually rather 
poorly drained because of the shale in the subsoil. The types 
mapped are Vesper silt loam, fine sandy loam, and sandy loam. 
The Dunning series consists of low lying dark-colored poorly 
drained sandy soils bordering marshy tracts. It may be resid¬ 
ual or alluvial in origin. Only the Dunning sand was mapped 
in this area. 
The Wabash series includes the dark colored bottom land soils 
in the western part of the area, where the upland soils are 
largely Knox silt loam. The types silt loam and loam were 
mapped. 
