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.
There are six main types of soil usually discussed in agriculture and basic soil science, distinguished by the size of the particle matter that makes up the soil. One of the types of soil, and the type with the largest particles, is sandy soil.