Geologic Principles

Multiple Choice

What is the term for the study of Earth's rock layers?

• Stratigraphy

• Geology

• Paleontology

• Mineralogy

Multiple Choice

According to the Principle of Superposition, which rock layer is the oldest?

• The layer closest to the surface

• The layer in the middle

• The deepest layer

• All layers are the same age

Multiple Choice

Which geologic principle states that sedimentary rocks are deposited in flat layers?

• Principle of Superposition

• Principle of Original Horizontality

• Principle of Lateral Continuity

• Principle of Inclusions

Multiple Select

Which of the following statements are true about the Principle of Lateral Continuity?

• Sedimentary rock layers form in continuous sheets.

• Gaps between similar layers developed over time.

• Layers are always flat and never slanted.

• A layer exposed on one side of a canyon likely spanned the canyon at one time.

Fill in the Blank

A feature that cuts across a horizontal rock layer is ___ than the layer it cuts through.

Fill in the Blank

The study of Earth's rock layers is called ___.