One method to obtain the absolute age of a sedimentary rock is to obtain a radiometric date on an interbedded ______rock.
A) chert
B) sandstone
C) volcanic
D) shale

Question

Quizplus · Accepted Answer

The best choice is a volcanic rock because volcanic rocks can be directly dated using radiometric techniques, which give an absolute age. Chert, sandstone, and shale do not typically contain radioactive isotopes and cannot be directly dated using radiometric methods.

One Method to Obtain the Absolute Age of a Sedimentary