Clastic or detrital rocks, depending on size.
Any rock (igneous, sedimentary or metamorphic) may be broken into fragments that may later be formed into sedimentary rock.
Any rock (igneous, sedimentary or metamorphic) may be broken into fragments that may later be formed into sedimentary rock.
Both sandstone and siltstone are clastic sedimentary rocks formed by broken fragments of rock being deposited and then turned into solid rock by heat and pressure. The main difference is in grain size. Sandstone has larger grains than siltstone.
A type of sedimentary rock that is formed from compressed sand would be: Sandstone.
Sedimentary rock formed from sand is called sandstone.
The common name for sandstone - is sandstone. Sandstone is a sedimentary rock formed from grains of sand.
They would only be organic if the particles or fragments are from a once living organism - sea shells, coral, etc.
formed underwater
Sandstone.
Sandstone!
Sandstone.
Sandstone.