T twistarspickel Guest Mar 12, 2010 #1 Describe two methods geologists use to determine the age of a rock. In your answer, be sure to mention igneous rock, sedimentary rock, the law of superposition, index fossils, radioactive decay, and half-life.
Describe two methods geologists use to determine the age of a rock. In your answer, be sure to mention igneous rock, sedimentary rock, the law of superposition, index fossils, radioactive decay, and half-life.
