Gravel Driveway Basics. Cost: $1 to $5 per square foot, though installation costs vary widely depending on where you live and the type of base required. Durability: Lifetime, with proper maintenance. Type of gravel: This depends on your area, but angular shapes are preferred over round.
Soil minerals form the basis of soil. They are produced from rocks (parent material) through the processes of weathering and natural erosion. Water, wind, temperature change, gravity, chemical interaction, living organisms and pressure differences all help break down parent material.
(2002) reported that 70% of CO2 was produced in the 0-100 mm soil layer in a bare field in Japan. The reason that Nakadai et al. (2002) had lower CO2 production in the 0-100 mm soil layer might be that their field was maintained for a longer time (over 20 years) than this bare field (two years).