Radiometric dates applied to sedimentary rocks produce ages that are ____________.
A)just as accurate as when the technique is applied to igneous rocks
B)too young (postdate sedimentary deposition)
C)too old (pre-date sedimentary deposition)

Question

Quizplus · Accepted Answer

Radiometric dating of sedimentary rocks often yields ages that are too old because the minerals in sedimentary rocks are derived from pre-existing rocks, which can be much older than the sedimentary rock itself.

Radiometric Dates Applied to Sedimentary Rocks Produce Ages That Are