What is Port Silt Loam?
[[Image:Oklahoma state soil.JPG|thumb|150px|Port silt loam]] '''Port Silt Loam''' is the [[List of U.S. state soils|state soil]] of [[Oklahoma]]. This type of [[soil]] is reddish in color due to the weathering of reddish [[sandstones]], [[siltstones]], and [[shales]] of the [[Permian]] geologic era. {{US-stub}} [[Category:Symbols of Oklahoma]] [[Category:Soil]]