A coarse rock composed of poorly cemented shells and shell fragments is called ________.

Calcite is the main mineral constituent of the sedimentary rock limestone and of the metamorphic rock marble.

Erosional retreat of a(n) ________ leads to enlargement and extension of a wave-cut platform in the inland direction.

The 1943 eruption of Paricutin in Mexico was characterized by ________.

Which of the following best describes seamounts and islands of the deep ocean basins?

In sedimentary rocks, lithification includes ________.

Hornblende and the other amphiboles have what type of silicate structure?

Changes in texture, composition, and other physical properties, after sediments are deposited, are collectively called ________.

Foliated metamorphic rocks are composed largely of equidimensional grains of minerals such as quartz and calcite.

Which of the following best describes the conditions of contact metamorphism?