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.
The texture of soil is determined by the ratio of sand, clay, and silt in soil. Soil with higher sand is sandy loam and feels more grainy because sand grains are larger than than the other rocks grains. Silty loam is produced by a higher percentage of silt in the soil. It is a finer grained soil because silt tends to be smaller than sand. On the soil triangle, these three components are able to make up a wide variety of soil textures. Soil is named for its texture, thus the texture of a soil is very important. Too much or too little of any of these components can make the soil not usable for agriculture.