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Which type of limestone consists mainly of tiny, marine fossils composed of calcite?

Clay and muddy sediments lithify to form shales and mudstones.

Which of the following is true regarding limestone and dolostone?

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

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

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

Detrital sedimentary rocks have clastic textures.

Which of the following erosional features provides clues to the direction of ice flow?

The viscosities of magmas increase with increasing percentages of silica.

________ is not a common cementing agent for sandstones.