Which of the following best describes the conditions of contact metamorphism?
A) Depths are so deep and temperatures are so high that the rocks begin to partially melt.
B) Pressures are fairly low, the rock is in the upper part of the crust, the heat for baking the neighbouring rocks is supplied quickly from the intrusion of a nearby magma body.
C) Pressures are very high, the rock is deeply buried, and temperatures are raised gradually by Earth's internally generated heat.
D) Heat is generated very quickly by shearing and mechanical movements along faults.

Question

Quizplus · Accepted Answer

Contact metamorphism occurs when rocks are heated by the intrusion of hot magma from the Earth's interior, without a significant increase in pressure and without the rock being deeply buried. This typically happens in the upper parts of the crust where the heat from the nearby magma body "bakes" the surrounding rocks, causing changes in their mineralogy and texture.

Which of the Following Best Describes the Conditions of Contact