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  Boone
County
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Rodman-Rock
Outcrop Complex
Bedrock in Boone County
is generally buried beyond the depth of soil development except for an area near
the Montgomery-Boone County line. There are some minor exposures of limestone,
siltstone, and shale of the Borden Group outcroping along Sugar
Creek.
RODMAN SERIES
The Rodman series consists of excessively drained soils that formed in loamy and
gravelly outwash overlying calcareous, stratified sandy and gravelly outwash.
They are very deep soils that are shallow to the calcareous, stratified sandy
and gravelly outwash. The Rodman soils are on kames, eskers, moraines, outwash
plains, and valley trains. Permeability is moderately rapid in the solum and
very rapid in the substratum. Slopes range from 2 to 70 percent. Mean annual
precipitation is about 38 inches, and the mean annual air temperature is about
50 degrees F.
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