Question

Which factor affecting metamorphic process is most likely to cause foliation in a rock? A. Presence of water  B. Temperature  C. Pressure  D. Time ​

Answer 1

Answer:

Option B and C

Explanation:

The temperature and pressure causes foliation in metamorphic rock. When a rock is subject to extreme conditions, its mineral realigns itself in perpendicular direction of stress application. Foliation causes weakling of rock in a specific plane of the rock and due to this metamorphic rock break easily along the foliation planes.

As the rate of metamorphism (application of pressure and temperature) increases, the coarseness caused due to foliation also increase.  

Hence, both option  B and C are correct.

Answer 2

Answer:  

C.  

Pressure is most likely to cause foliation in a rock.

Hope this helps,

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