Classification of Metamorphic Rocks
Metamorphic rocks are classified by their mineral composition, the source rock, also known as a protolith, and the context (pressure, temperature, hydrological features, etc.) of its formation.
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Famous quotes containing the word rocks:
“A part, a large part, of travelling is an engagement of the ego v. the world.... The world is hydra headed, as old as the rocks and as changing as the sea, enmeshed inextricably in its ways. The ego wants to arrive at places safely and on time.”
—Sybille Bedford (b. 1911)