they are materials in soil. the are types of soil. if you all need more information go to www. Google. com and ask.com and bing.com
1. Rock materials that are found in soil are mainly sand, silt and clay.
clay and soil
silt soil is smaller than sand but larger than clay
soil, silt, and clay
clay,sand,silt,and loam
gravel,coarse,fine sand,silt and clay
Sand, Clay Soil, and Silt.
sand,silt and clay
clay, sand, and silt make up inorganic material in soil
clay.
silt
Yes soil does contain rocks in it the most comman are sand, silt and clay. The smallest is clay sand can go from 0.5 to 2mm, and silt and clay go from 0.200 to 0.5.