Understanding Relative Dating and Geological Laws

What does the law of superposition help us determine about rock layers?

• The chemical composition of the rocks

• The relative age of the rocks

• The exact age of the rocks

• The mineral content of the rocks

According to the law of cross-cutting relationships, which statement is true?

• A fault is the same age as the rocks it cuts through

• A fault is younger than the rocks it cuts through

• A fault is older than the rocks it cuts through

• A fault does not affect the age of the rocks

What is an unconformity in geological terms?

• A type of rock layer

• A new rock formation

• A type of mineral deposit

• A gap in the geological record

If an igneous intrusion cuts across a fault, which is older?

• The igneous intrusion

• The fault

• The age cannot be determined

• They are the same age

In a sequence of rock layers, which layer is the oldest?

• The topmost layer

• The bottommost layer

• The middle layer

• The layer with the most fossils