Question

Which stable element is used to determine the age of volcanic rock?

argon
carbon-14
potassium
carbon-12

Answer 1

Answer:

B) potassium

Explanation:

One of the most common methods to date volcanic rocks uses potassium (radioactive parent) and argon (stable daughter). Potassium is an element found in many minerals and rocks, and it normally has an atomic mass of 39.