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A large area undergoes metamorphism (all rocks reach same grade). However, after the event, some rocks are quartzite and some are schist. Why?

What happens when a sediment or sedimentary rock is gradually buried deeper inside Earth?

A typical quartz sand beach is most likely to form which type of sedimentary rock?

What type of stress most likely caused these folds?

At a continent-continent convergent boundary, which rock type is most likely to form?

The physical weathering process that involves vegetation is called:

During _______ minerals change structure but composition stays the same.

If a rock has just begun to melt, ______ likely began to melt first.

If layers in a set of sedimentary beds change from silt to sand, the energy of deposition:

If an igneous rock has pegmatitic (very coarse-grained) texture, it must be an ______ rock.