What rock is made from gravel?
Conglomerate is a sedimentary rock composed of rounded rock fragments. Breccia is a sedimentary rock composed of angular pieces of rock.
Gravel is made by crushing rock and sorting the result into different sizes, generally by screening. Your pea gravel is one of the screening products. There are several rock-crushing systems, and these give a different range of sizes in the product. There are hammer mills, rod mills, 'rod and cone' mills, and so on. A gravel producer would choose his process according to need. In many parts of the country, merely sorting the river gravels…
When small pieces of rock break off larger pieces, they form the basis of all soil. The rock turns in to gravel, which turns into sand. Plants, animals, and minerals break down to form clay. Silt is a dust particle which is made up of minerals and tiny bits of rock. It is smaller than sand and bigger than clay.When the right amount of gravel, sand, clay, and silt mix, it turns into soil.
Gravel is a physical label for small rock fragments. Gravel can be produced by crushing of any rock type, i.e., metamorphic, sedimentary, or igneous, or can be obtained from vast deposits left by glacial means, which normally require a mechanical sorting for required sizes. Naturally pre-sorted deposits can be found in rivers and stream beds.