Question

Metamorphism due to heat alone, without differential stress, is called:

a) shock metamorphism
b) contact metamorphism
c) regional metamorphism
d) subduction metamorphism

Answer 1

Metamorphism from heat alone, without differential stress, is known as contact metamorphism.

Step-by-step explanation:

Metamorphism due to heat alone, without differential stress, is commonly referred to as contact metamorphism. This type of metamorphism occurs when rock is heated by nearby molten magma and is characterized by a temperature increase instead of pressure-related changes. In contact metamorphism, the surrounding rock does not suffer deformation but changes in its mineral composition and structure due to the high temperatures.