Exam 14: Building the Crust With Rocks

Most of the rocks exposed at the surface are igneous and metamorphic rocks.

Regional metamorphism requires the presence of either magma or lava.

Rock that has cooled from lava is called __________.

Phaneritic rocks have poorly developed crystals.

Which geographic setting is least likely to have an outcrop?

All igneous rocks form directly from cooled magma.

Fossils provide information about ancient climates on Earth.

Referring to Table 14.1, which is an example of an organic sedimentary rock?

Which is not a problem potentially associated with fracking?

Coal is the most economically valuable sedimentary rock.

-Referring to Table 14.3, which type of metamorphic rock requires the highest temperature to form?

-Referring to the image, eastern Africa is an area dominated by what?

Obsidian is a mineral.

All igneous rocks form directly from cooled lava.

According to the principle of superposition, in a stacked sequence of sedimentary rock layers the oldest layers are at the top.

Disposal of fracking fluid by injecting it into the ground causes earthquakes.

-Referring to the figure, which rock cooled quickly near the surface?

__________ form when carbon combines with other elements, particularly oxygen.

Phaneritic rocks are igneous rocks that cool slowly deep in the crust.

-Referring to the image, the Cascade Range in western North America was produced by what?