Metamorphic minerals are those that form only at the high temperatures and pressures associated with the process of metamorphism. These minerals, known as index minerals, include sillimanite, kyanite, staurolite, andalusite, and some garnet. Other minerals, such as olivines, pyroxenes, amphiboles, micas, feldspars, and quartz, may be found in metamorphic rocks, but are not necessarily the result of the process of metamorphism.
These minerals formed during the crystallization of igneous rocks. Sedimentary rocks can be categorized into clastic, organic, and chemically precipitated rocks. Clastic sedimentary rocks are those which are created in response to mechanical weathering on pre-existing rocks.
Organic sedimentary rocks are those which are derived from accumulated and deposited remains of dead plants and animals. Sometimes, a chemical reaction between two minerals present in rocks may occur.
On cooling down, these minerals precipitate and turn into chemical sedimentary rocks. Metamorphic rocks are formed when pre-existing rocks are subjected to change in heat and pressure causing physical and chemical changes in them.
The rocks go through a temperature of above degrees Celsius and pressure of around bars to form new rocks. Metamorphic rocks can be categorised into two types — foliated and non-foliated rocks. Foliated rocks are those which have a structure of thin layers, while non-foliated rocks have no such structure.
It is a rock found in abundance. Interestingly, since the Taj Mahal is made up entirely of marble, the monument is one big metamorphic rock.
Igneous, sedimentary, and metamorphic rocks can be told apart easily by their formation, texture, structure, and so on. The three types of rocks may sometimes be the same mineral or sediment going through a rock cycle. For example, an igneous rock may go through the process of weathering and cementation to form a sedimentary rock.
Correct answer: Magma cools slowly, creating a coarse grained texture. Explanation : The answer is "Magma cools slowly, creating a coarse grained texture. What type of rock is granite? Pictured above. Possible Answers: sedimentary. Correct answer: igneous. Explanation : The answer is "igneous. Explanation : The answer is "sedimentary. Possible Answers: quartz. Correct answer: shale. Explanation : The answer is "shale" because shale is a type of sedimentary rock. Slate is a metamorphic rock.
Which best describes how slate is formed? Possible Answers: compaction of silica and sand. Correct answer: heating and pressurization of shale. Explanation : The answer is "heating and pressurization of shale. Copyright Notice. View Tutors. Aaron Certified Tutor. Fatima Certified Tutor. Pennsylvania State University-Pen Kai Certified Tutor. Colorado State University, Bachelors, French. University of Hawaii, Masters, Art History. Report an issue with this question If you've found an issue with this question, please let us know.
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