FORESTRY
SOIL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What rocks were considered metamorphic?
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phyllite, gneiss
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obsidian, granite, gabbro
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Common metamorphic rocks include phyllite, schist, gneiss, quartzite and marble.
Detailed explanation-2: -Phyllite is a foliated metamorphic rock rich in tiny sheets of sericite mica. It presents gradation in degree of metamorphism ranging between slate and mica schist.
Detailed explanation-3: -The various types of foliated metamorphic rocks, listed in order of the grade or intensity of metamorphism and the type of foliation are slate, phyllite, schist, and gneiss (Figure 7.8).
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