Exam 7: Metamorphism, Metamorphic Rocks, and Hydrothermal Rocks

____ is the lowest-grade rock in progressive metamorphism.

Metamorphic rock forms from pre-existing rock when heat and pressure cause solid-state transformations.

Contact metamorphism occurs adjacent to a pluton when a body of magma intrudes relatively cool country rock.

When a rock is buried to increasing depth it is subject to increasingly greater temperature and pressure and will undergo _____.

_______ forms when a limestone recrystallizes during metamorphism.

The major ____ classification of metamorphic rocks divides them into foliated and non-foliated groups.

Confining pressure is pressure applied equally on all surfaces of a substance as a result of burial or submergence.

Schist forms at higher temperatures and pressure than slate.

Gneissic texture has the minerals separated into distinct (light and dark) layers, or lenses.

The original rocks must have been brittle in order for them to bend and mold under stress.

Shearing causes parts of a body to move or slide relative to one another across a plane.

___ is a fine-grained metamorphic rock whose parent rock was basalt.

The two most common non-foliated metamorphic rocks are _______ and marble.

Schist is a metamorphic rock characterized by a nonfoliated texture.

A migmatite forms when a rock partially melts.

A migmatite is a mixed ___ rock.

_____ is metamorphism coupled with the introduction of ions (charged atoms) from an external source.

Low grade metamorphism of _____ forms greenschist, with chlorite as the dominant mineral.

Metamorphism includes melting.

Metamorphism may involve all of the following except __.