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Conglomerate is a type of sedimentary rock-composed of rounded pebbles, cobbles , or boulders cemented together.

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Gneiss is a common type of rock formed by metamorphic processes from pre-existing processes that were originally either igneous or sedimentary rocks. It is often foliated.

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breccia is a clastic sedimentary rock composed of angular fragments of older rocks joined together by smaller particles or bonded by menial cement the fragments are usually 2 meters or larger. it forms where angular broken fragments of mineral or rock debris accumulate. did you know that breccia can be a colorful rock.

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https://qph.fs.quoracdn.net/main-qimg-09a29b49bd660a5a73728e0d204af2a3

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It is a result from a transformation of a pre-existing rock. metamorphic is subjected very high heat and pressure, which causes physical or chemical changes. did you know that metamorphic rock has changed overtime because of heat and pressure, metamorphic rocks can be formed by pressure deep under parts surface the gap of metamorphic rock is 1.8billion years.

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sedimentary rock is Formed by the deposition cementation of that material at the Earths surface. semintation is the collective name for processes that cause mineral or organic particles to settle in place. did you know that sedimentary rocks are extremely important resources as it tells us clues about the earths past. sedimentary rocks have layers of sediments that are arranged according to there density the age of sedimentary rock is over 100million years

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igneous rock is one of the three major types of rocks. igneous meaning fire (in latin) or magmatic rock. The rock is formed  through the cooling and the solidification of magma or lava. The heat pressures together to create the rock.Igneous rock can also be called magmatic rock or volcanic rock. when magma rises to the surface of the earth and hardness, it forms extrusive igneous rocks. extrusive igneous rocks tends to be glassy in texture because there formation occurs very rapidly. did you know there are over 700 different types of igneous rocks

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The Rock Cycle is a group of changes. Igneous rock can change into sedimentary rock or into metamorphic rock.

Igneous rock forms when magma cools and makes crystals. Magma is a hot liquid made of melted minerals. The minerals can form crystals when they cool. Igneous rock can form underground, where the magma cools slowly. Or, igneous rock can form above ground, where the magma cools quickly.

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1.gneiss  6.granulite
2.slate 7.anthracite
3.marble
4.schist
5.quartzite

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1.breccia                        6.chert
2.conglom 7.coal
3.sandstone 8.dolomites
4.siltstone 9.limestones
5.shale  10.flint

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A rock is a solid made up of different materials, rocks are not made up of exact structures that can be described by scientists. scientists usually classify rocks by how they are made and formed. There are three major types of rocks: Igneous, sedimentary

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a dark fine-grained volcanic rock, typically composed largely of plagioclase with pyroxene and olivine.

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Scoria is a highly vesicular, dark colored volcanic rock that may or may not contain crystals. It is typically dark in color, and basaltic or andesitic in composition.

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1.Andesite.            5.pumice
2.Basalt                  6. gabro
3.Tuff                      7.granite
4.Scoria                  8.obsidian
9.pegmatite 10.rhyolite

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A light, porous rock formed by volcanic ash. Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption. The ash is pressured into a solid rock in a process called consolidation.

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A very light and porous volcanic rock formed when a gas-rich froth of glassy lava solidifies rapidly

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Scoria is a highly vesicular, dark colored volcanic rock that may or may not contain crystals. It is typically dark in color, and basaltic or andesitic in composition.

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Gabbro is a dark, igneous rock composed of calcium plagioclase, pyroxene, and minor olivine, but no quartz. It is the intrusive equivalent of a basalt.

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A pegmatite is a holocrystalline, intrusive igneous rock composed of interlocking phaneritic crystals usually larger than 2.5 cm in size; such rocks are referred to as pegmatitic.

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a dark, fine-grained, brown or greyish intermediate volcanic rock which is a common constituent of lavas in some areas.Andesite is an extrusive igneous, volcanic rock, of intermediate composition, with aphanitic to porphyritic texture

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Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. Obsidian is produced when Felecia lava extruded from a volcano cools rapidly with minimal crystal growth.

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Rhyolite is an igneous, volcanic rock, of Felecia composition. It may have any texture from glassy to aphanitic to porphyritic. The mineral assemblage is usually quartz, sanidine and plagioclase. Biotite and hornblende are common accessory minerals.

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Graniterock is an American corporation, founded in 1900, and based in Watsonville, California. It operates in the construction industry providing crushed gravel, sand, concrete and asphalt.