Science Study Guide

Who is responsible for outlining the principle now called uniformitarianism?

• James Hutton

• Albert Einstein

• James Hurst

• Charles Lyell

The principle of uniformitarianism states that...

• the same geologic processes have been at work throughout Earth's history

• the geologic process once at work are now changing

• Earth changes only at certain times and only after certain events.

Which of the following processes was NOT observed by Hutton when he developed the idea of uniformitarianism.

• Rivers carry rocks particles upstream

• In time, new rocks will be raised and create new landforms

• rock particles are deposited and form new layers of sediment

The author of Theory of the Earth.

• James Hutton

• Charles Lyell

• Albert Einstein

A break in the Earth's crust along which blocks of crust slide relative to one another.

• fault

• tilting

• intrusion

• folding

Molten rock that has squeezed into existing rock and hardened.

• intrusion

• fault

• folding

• tilting

When a layer or several layers of rock are missing from a rock layer sequence, this is called..

• unconformities

• fault

• folding

Found between horizontal layers of sedimentary rock and rock layers that have been tilted or folded.

• angular unconformities

• nonconformity

• disconformity

When sedimentary rock layers lie on top of an eroded surface of older intrusive igneous or metamorphic rock.

• disconformity

• nonconformity

• angular unconformity

Most common type of unconformity.

• disconformity

• nonconformity

• angular unconformity