Explain the difficulty in using sedimentary and metamorphic rocks for radiometric age dating
What will be an ideal response?
Answer: Sedimentary rocks are rarely used for age dating because the particles in the sedimentary rock are not the same age as the rock in which they formed. The sediments have been weathered from rocks of varying ages. Metamorphic rocks are also difficult to use; the minerals in a metamorphic rock don't necessarily represent the time when that rock initially formed. The resulting radiometric date may in fact represent any number of metamorphic phases.
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a. true b. false
Briefly describe cinder cones
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