Methods of dating Earth 1

Which method of dating rocks provides a precise numerical age by analyzing the decay of radioactive isotopes?

• Relative dating

• Stratigraphic dating

• Radiometric dating

• Faunal succession

According to the Principle of Superposition, in an undisturbed sequence of sedimentary rock layers, where are the oldest layers typically located?

• At the top

• In the middle

• At the bottom

• Interspersed randomly

If a geological feature, such as a fault or an igneous intrusion, cuts across existing rock layers, what can be inferred about its age relative to those layers?

• It is older than the layers it cuts

• It is the same age as the layers it cuts

• It is younger than the layers it cuts

• Its age cannot be determined from this relationship

What type of unconformity is defined by an erosional surface between two parallel layers of sedimentary rock?

• Nonconformity

• Angular unconformity

• Disconformity

• Paraconformity