Port Silt Loam is the state soil of Oklahoma

Oklahoma

Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...

. This type of soil

Soil

Soil is a natural body consisting of layers of mineral constituents of variable thicknesses, which differ from the parent materials in their morphological, physical, chemical, and mineralogical characteristics...

 is reddish in color due to the weathering of reddish sandstones, siltstones, and shales

Shalës

Shalës is a municipality in the Elbasan District, Elbasan County, central Albania. The municipality consists of the villages Shalës, Licaj, Kurtalli, Xibrake, Xherie and Kodras....

 of the Permian

Permian

The PermianThe term "Permian" was introduced into geology in 1841 by Sir Sir R. I. Murchison, president of the Geological Society of London, who identified typical strata in extensive Russian explorations undertaken with Edouard de Verneuil; Murchison asserted in 1841 that he named his "Permian...

 period.
It is a medium textured soil and is an alluvial soil deposited along flood plains. Port silt loam can be found in 33 of the 77 counties in Oklahoma and covers around one million acres (4,000 km²). The name comes from a small community (Port

Port, Oklahoma

Port is a small rural community in Washita County, Oklahoma. The community had a post office from February 21, 1901, until February 29, 1940. It was named for a druggist, Mrs. F.M. Port...

 near Washita County, OK) and the texture of the top soil (silt loam

Loam

Loam is soil composed of sand, silt, and clay in relatively even concentration . Loam soils generally contain more nutrients and humus than sandy soils, have better infiltration and drainage than silty soils, and are easier to till than clay soils...

).

External links

• Official Series Description - Port Series
• Port Silt Loam Brouchure (published by the Oklahoma Conservation Commission
  Oklahoma Conservation Commission
  The Oklahoma Conservation Commission is an agency of the government of Oklahoma under the Governor of Oklahoma. It is the duty of the Commission to conserve Oklahoma's land and water...
  
  )
• [ftp://ftp-fc.sc.egov.usda.gov/NSSC/StateSoil_Profiles/ok_soil.pdf Port - Oklahoma State Soil (pdf)]