Precisely Speaking,a Measured Radiometric Age for a Mineral Crystal Within

question 8

Multiple Choice

Precisely speaking,a measured radiometric age for a mineral crystal within an igneous rock denotes the amount of time that has passed since the ____________.

• A)atoms within the crystal were part of a body of molten magma
• B)crystal solidified
• C)temperature of the crystal became equal to the Curie point for the mineral
• D)temperature of the crystal became equal to the closure temperature for the mineral

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