GEOLOGY
PHYSICAL GEOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Metamorphism usually occurs during burial, tectonic movements, heating and presence of chemically active fluids.
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Metamorphism can range from slight to considerable changes in the parent rock.
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Metamorphism occurs when there is an increase in temperature and pressure which results to melting of rocks.
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Metamorphism of the protolith changes the texture and mineralogy of the original rock.
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Detailed explanation-1: -Which among the following statement(s) is true about metamorphic rocks? They are formed when rocks change their original shape and form due to intense heat or pressure.
Detailed explanation-2: -Agents of Metamorphism include pressure, temperature, heat, compression, stress, solutions, etc. Decomposition is the agent of sedimentary rocks and not metamorphism.
Detailed explanation-3: -Metamorphism occurs because some minerals are stable only under certain conditions of pressure and temperature. When pressure and temperature change, chemical reactions occur to cause the minerals in the rock to change to an assemblage that is stable at the new pressure and temperature conditions.
Detailed explanation-4: -The correct answer is Sandstone.