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प्रश्न
The alteration of the composition or structure of a rock by heat, pressure, or other natural agency:
विकल्प
Hypobyssal
Metamorphism
Compaction
Compaction
MCQ
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उत्तर
Metamorphism
Explanation:
Metamorphism is the process by which the composition or structure of a rock is altered by heat, pressure, or other natural agencies. During metamorphism, existing rocks (igneous, sedimentary, or even older metamorphic rocks) undergo physical and chemical changes deep within the Earth. Heat and pressure cause minerals to recrystallise or form new minerals, changing the rock’s texture and composition without melting it completely. This process leads to the formation of metamorphic rocks, such as marble from limestone or schist from shale.
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