Granulite facies are best described as what?

Granulite facies are best described as what?

• A. High-grade metamorphic rocks of the facies that have experienced high-temperature and moderate-pressure metamorphism.
• B. Low-grade metamorphic rocks formed under high pressure
• C. Sedimentary rocks with high clay content
• D. Metamorphic rocks formed at low temperature

Answer: (A)

Granulite facies capture rocks that have undergone very hot, high-grade metamorphism at crustal depths. The key is the combination of high temperature with substantial, not shallow, pressures, placing these rocks in deep-crust conditions. This hot, relatively high-pressure environment produces the characteristic granulitic textures and often signs of dehydration melting, distinguishing them from rocks formed at low temperatures or low pressures. So the description that best fits granulite facies is high-grade metamorphic rocks formed under high-temperature and moderate-to-high pressure metamorphism.

Granulite facies capture rocks that have undergone very hot, high-grade metamorphism at crustal depths. The key is the combination of high temperature with substantial, not shallow, pressures, placing these rocks in deep-crust conditions. This hot, relatively high-pressure environment produces the characteristic granulitic textures and often signs of dehydration melting, distinguishing them from rocks formed at low temperatures or low pressures. So the description that best fits granulite facies is high-grade metamorphic rocks formed under high-temperature and moderate-to-high pressure metamorphism.