The two keys to determining the absolute age of a rock are
A) measuring the abundance of parent isotope and measuring the abundance of daughter isotope.
B) knowing the half-life and measuring the abundance of parent and daughter isotopes.
C) knowing the composition and the geologic period the rock is from.
D) identifying all the minerals in the rock and knowing the half-life of each mineral.
Correct Answer:
Verified
Q73: Metamorphism usually _ the radioactive-isotope clock.
A) retains
B)
Q74: A rock that is 200 million years
Q75: A rock that is 375 million years
Q76: A rock that is 20 million years
Q77: In order to use a radioactive-decay scheme
Q79: The oldest dated minerals on Earth are
Q80: Each radioactive-decay scheme has its own time
Q81: How do geologists know how to determine
Q82: How are geologic events placed in relative
Q83: How do geologists recognize gaps in the
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