Potassium-argon dating can only be used to date
A) recent archaeological sites.
B) very young rocks.
C) young fossils.
D) very old fossils or rocks.

Question

Quizplus · Accepted Answer

Potassium-argon dating is a radiometric dating method that can be used to date rocks and minerals that are millions to billions of years old. It is based on the decay of potassium-40 to argon-40, which has a half-life of 1.3 billion years. Therefore, it can be used to date very old fossils or rocks, but not recent archaeological sites, very young rocks, or young fossils.

Potassium-Argon Dating Can Only Be Used to Date