The isotope most useful for dating rocks from the late Pleistocene is
A)uranium-238.
B)uranium-235.
C)potassium-40.
D)carbon-14.

Question

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Carbon-14 is the isotope most useful for dating rocks from the late Pleistocene because it has a half-life of 5,700 years and can determine the age of organic materials up to about 50,000 years old. It is commonly used to date fossils and archaeological artifacts. Uranium-238 and Uranium-235 are used for dating rocks that are millions of years old, while potassium-40 is used for dating volcanic rocks that are hundreds of thousands to millions of years old.

The Isotope Most Useful for Dating Rocks from the Late