How does the age of an intrusion compare to the age of the surrounding rock?
A.The intrusion is always the same age.
B.The intrusion can be younger or older.
C.The intrusion is always younger.
D.The intrusion is always older.
A.The intrusion is always the same age.
B.The intrusion can be younger or older.
C.The intrusion is always younger.
D.The intrusion is always older.