Petersburg, West Virginia. Petersburg is a city in Grant County, West Virginia, USA. The population was 2,467 at the 2010 census. It is the county seat of Grant County. Contents.
The particles that make up soil are categorized into three groups by size: sand, silt, and clay. Sand particles are the largest and clay particles the smallest. Although a soil could be all sand, all clay, or all silt, that's rare. Instead most soils are a combination of the three.
Transportation results in the formation of cohesion-less soil mass, where particle size is not uniform and even the texture is not the same. Mainly soil structure can be divided into four categories: 1  Granular soil has a diameter less than 0.5 cm and is most commonly found in regions where roots are in the rock mass.