By heat and pressure
River rock can be composed of any rock type, or any combination of rock types.
The rock described would be a clastic sedimentary rock.
They are called clastic sedimentary rocks.
sedimentary rock
No rock. Any rock can turn into sedimentary rock, such as granite (igneous rock) and slate (metamorphic rock). Even sedimentary rock can turn into other sedimentary rock.
Copper ore is typically found in igneous rocks, such as basalt or granite, as well as in sedimentary rocks like shale. The most common type of rock where copper ore is extracted is called porphyry copper deposits, which are a combination of igneous and sedimentary rocks. These rocks contain copper minerals like chalcopyrite, bornite, and chalcocite, which are essential for copper extraction.
Yes, through the process of erosion, transportation, deposition, and lithification, sediments from existing sedimentary rocks can be weathered and broken down to form new sedimentary rocks. The cycle of sedimentary rock formation can involve the breakdown and reformation of older sedimentary rocks.
Igneous rocks are a "finished product". They do not become sedimentary rock - though sedimentary rocks, with heat and pressure can become metamorphic rocks.
They are mostly found in Sedimentary Rocks
Sedimentary rocks are formed when sediments are compressed, compacted, and cemented together. Examples include sandstone, shale, and limestone.
The main sub-categories of sedimentary rocks are clastic, chemical, and organic. Clastic sedimentary rocks form from the accumulation and cementation of fragments of pre-existing rocks. Chemical sedimentary rocks form from the precipitation of minerals from water solutions. Organic sedimentary rocks form from the accumulation and compression of organic materials, such as plant or animal remains.
SEDIMENTARY ROCK FORMATION, begins with igneous, metamorphic, or other sedimentary rocks. When these rocks are exposed at the earth's surface they begin the long but relentless process of becoming sedimentary rock.