Sedimentory Rock

Rock sediment or sedimentary rock is one of the three main rock groups (along with igneous and metamorphosed rocks) are formed through three main ways: weathering of other rocks (clastic); deposition (deposition) due to biogenic activity; and precipitation (precipitation) of solution. Common rock types such as limestone, sandstone, and clay, including the rock sediment. Sediment rocks covering 75% of the earth's surface.
Naming sediment grain size is usually based on the naming of the rock composer is: breccia, conglomerate, sandstone, clay stone

* Breccia is a sedimentary rock with grain size larger than 2 mm with an angular shape butitan
* Conglomerate is a sedimentary rock with grain size larger than 2 mm in the form of granules which membudar
* Sandstone is a sedimentary rock with grain size between 2 mm to 1 / 16 mm
* Stone silt is sedimentary rock with grain size between 1 / 16 mm to 1 / 256 mm
* Stone clay is a sedimentary rock with grain size smaller than 1 / 256 mm