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Based on texture, metamorphic rock can be classified as foliated or non-foliated:
1. Foliated metamorphic rock such as gneiss display banding and regrouping of its mineral constituents as a result of enormous pressures and heat. The banding forms perpendicularly to the direction of pressure. The pressure is usually related to tectonic plate collisions. Schist is another type of foliated rock that exhibits thin layering of micaceous minerals, once again due to pressure and heat. The difference between these two types of foliated rock lies in the rock from which they were derived.
2. Non-foliated metamorphic rock such as quartzite and marble do not display the banding or layering that are present in foliated rocks. This is because their parent rock was usually sedimentary and more pure in mineral composition than the parent rocks of foliated rocks.
Metamorphic rock can also be classified as regional (from broad processes such as plate tectonics) or contact (from proximity to an invading heat source).
Metamorphic rock is further classified by degree of metamorphism, as increases in heat and pressure can further metamorphose a rock. The degree is expressed in terms of grade: low grade, medium grade, high grade. As an example, the metamorphic rock slate (low grade) can metamorphose to schist (medium grade) and then to gneiss (high grade).
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What are the two types metamorphic rock?
The two groups of metamorphic rock are foliated and nonfoliated. Metamorphic rocks can also be classified as contact and regional.
What is classified as a metamorphic rock?
I H O P nest
A metamorphic rock can be classified according to its?
A metamorphic rock can be classified according to its texture, mineral composition, and metamorphic grade. Texture refers to the size and arrangement of mineral grains, while mineral composition indicates the minerals present. Metamorphic grade refers to the temperature and pressure conditions under which the rock formed.
What metamorphic rock is currently known as coal?
Anthracite coal is classified as a metamorphic rock. I've included two wikipedia links on this subject.
Is quartzite sedimentary or igneous?
Neither. Quartzite is metamorphosed quartz sandstone, and is therefore a metamorphic rock.
Which of Slate Granite Shale or Pumice is classified as a sedimentary rock?
Slate, granite, and shale are classified as metamorphic or igneous rocks, while pumice is classified as an igneous rock. Sedimentary rocks are formed through the deposition and solidification of sediment.
What are the three categories that rocks are classified in?
Igneous, metamorphic and sedimentary are the three rock types.
Is coal metamorphic?
Most coal is sedimentary, but anthracite is bituminous coal that has undergone metamorphosis to become a metamorphic rock.
Is graphite igneous sedimentary or metamorphic?
Graphite is a metamorphic rock. It is formed from the metamorphism of organic sedimentary rocks, such as coal, under high temperature and pressure.
Which kind of metamorphic rock is massive and has no banding?
Marble is a metamorphic rock that is massive and lacks banding. It forms from the recrystallization of limestone and is composed mostly of the mineral calcite. Marbles are often used in architecture and sculpture due to their aesthetic qualities.
Witch rock is classified as a metamorphic rock?
basalt, marble, shale one of these just choose nice and simple right !
Is azurite a metamorphic?
Azurite is a secondary mineral formed from the weathering of primary copper ores. It is not a metamorphic rock itself, but it can be found in metamorphic environments as a result of the alteration of primary copper minerals during metamorphism.
