Which Two Metamorphic Rocks Are Each Composed Predominantly of a Single

question 38

Multiple Choice

Which two metamorphic rocks are each composed predominantly of a single mineral?

• A)mica schist and granitic gneiss
• B)fault breccia and graphitic schist
• C)garnet schist and andalusite hornfels
• D)marble and quartzite

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Definitions:

Mantle Convection

Movement of mantle material in response to variations in density, especially those caused by differences in temperature.

Asthenosphere

A semi-fluid layer beneath the Earth's lithosphere on which the tectonic plates move, located in the upper mantle between approximately 100 and 250 kilometers deep.

Density

A measure of mass per unit volume of a substance, influencing how materials interact, such as floating or sinking in water.

Slab Pull

A mechanism that contributes to plate tectonics, involving the subduction of oceanic plates pulling the trailing lithosphere into subduction zones.