Here's why:
* Contact Metamorphism: This type of metamorphism occurs when existing rocks are heated by the intrusion of magma or lava. The heat alters the mineral composition and texture of the rock, but the rock doesn't experience significant deformation.
* No Deformation: The lack of deformation means the original shape and structure of the rock are preserved. This is in contrast to regional metamorphism where rocks are subjected to both heat and pressure, causing significant changes in their shape and structure.
Examples of contact metamorphic rocks:
* Hornfels: A hard, fine-grained rock often formed from shale or mudstone.
* Marble: Formed from the metamorphism of limestone.
* Skarn: A complex rock formed by the interaction of hot fluids and limestone.
Let me know if you have any other questions about metamorphic rocks!
