What would fossil ages from the geologic timescale and an isotopic age on the granite tell us about the age of the unconformity?
A)The unconformity is older than the isotopic age of the granite.
B)The unconformity is older than the age assigned to the fossils.
C)The granite is younger than the unconformity.
D)It is not possible to have fossils preserved so close to granite.
E)None of these.

Question

What would fossil ages from the geologic timescale and an isotopic age on the granite tell us about the age of the unconformity? 
A)The unconformity is older than the isotopic age of the granite. 
B)The unconformity is older than the age assigned to the fossils. 
C)The granite is younger than the unconformity. 
D)It is not possible to have fossils preserved so close to granite. 
E)None of these.

Quizplus · Accepted Answer

Fossil ages from the geologic timescale would provide a maximum age for the unconformity, while an isotopic age on the granite would provide a minimum age. Therefore, the age assigned to the fossils would be older than the age of the granite and the unconformity.

What Would Fossil Ages from the Geologic Timescale and an Isotopic