Question 18 Which one of the following statements is incorrect in relation to me

Question

Question 18 Which one of the following statements is incorrect in relation to metamorphic rocks associated with mountain belts such as the Himalayas? KEY for Q18 A The rocks of progressively higher grade are exposed towards the centre of a mountain belt. B Young mountain belts have deeper roots compared with older and eroded mountain belts. C Compression during mountain building results in crustal thickening. D Generally, slates and schists tend to be found in the cores of mountain belts whereas gneisses are more abundant at the edges. E Mountain building is generally associated with convergent plate-boundary settings.

Explanation / Answer

metamorphic rocks are the third great class of rocks. these are formed

when sedimentary and igneous become changed by condtions undergorund.

The four main agents that metamorphose rocks are heat, pressure, fluids and strain.

These agents can act and interact in an infinite variety of ways.

As a result, most of the thousands of rare minerals known to

science occur in metamorphic rocks.

hence the answer is option B

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