2. Geologic Time

Relative Dating — Quiz

Test your understanding of relative dating with 5 practice questions.

Practice Questions

Question 1

Which principle of relative dating states that inclusions (fragments of one rock unit) within another rock unit must be older than the rock unit containing them?

Question 2

A geologist examines a geological cross-section and observes a series of sedimentary layers that are folded. An igneous dike then cuts through these folded layers. Which of the following statements accurately describes the relative ages of these events?

Question 3

If a distinctive fossil species is found in two widely separated rock outcrops, what can be concluded about the relative age of these two rock layers?

Question 4

An angular unconformity is observed in a rock sequence. What does this specific type of unconformity indicate about the geological history of the area?

Question 5

Consider a geological cross-section with the following events in chronological order from oldest to youngest: deposition of Layer A, intrusion of a granite batholith into Layer A, deposition of Layer B on top of the eroded granite and Layer A, and finally, a fault cutting through all previous features. Which feature is the youngest?