The epicenter of an earthquake is on the surface of the Earth directly above the focus.

Partial melting of the ultramafic rock peridotite can generate a(n) ________ magma.

Which is the correct term for water that flows in a channel, regardless of size?

The distinctive layers or bands of different minerals in gneisses may indicate complex folding.

Magma generation at depth almost always involves partial melting, not complete melting of the source rock.

Partial melting results in a magma that is nearer the ________ end of the compositional spectrum than the parent rock from which it was derived.

The viscosities of magmas increase with increasing percentages of silica.

Chalk, coquina, and ancient coral reefs are primarily composed of microcrystalline quartz.

Flint, chert, and jasper are microcrystalline forms of ________.

________ is not a common cementing agent for sandstones.