Principles of Relative-Age Dating

Front

What does dating mean in science?

Back

To establish the age of a rock or fossil.

Front

Which geologic feature is the youngest?

Back

Fault J

Front

If M is an intrusion then it is most likely made of what type of rock?

Back

Igneous rock

Front

Which of the following correctly describes geology?

Back

The science and study of the planet Earth.

Front

What is the principle of superposition?

Back

In a sequence of sedimentary rocks, the oldest layers are at the bottom and the youngest are at the top.

Front

What does the principle of original horizontality state?

Back

Layers of sediment are originally deposited horizontally under the action of gravity.

Front

What is lateral continuity?

Back

Layers of sediment initially extend laterally in all directions; they may be laterally continuous even if they are separated by a valley.

Front

What are inclusions in geology?

Back

Fragments of one rock unit that are contained within another rock unit.

Front

What is the principle of cross-cutting relationships?

Back

If a geologic feature cuts through another, the feature that has been cut is older.

Front

What is relative age dating?

Back

Determining the age of a rock or fossil in relation to other rocks or fossils.