Question
This diagram shows partial rock cores from three different locations, with the same layer of rock identified by the dotted lines.If the identified layer of rock contains identical index fossils, what is most likely known about the layer at all three locations?
Image reference
A.
It is igneous rock of the same age.
B.
It is sedimentary rock of the same age.
C.
It is igneous rock of different ages.
D.
It is sedimentary rock of different ages.
Image reference
A.
It is igneous rock of the same age.
B.
It is sedimentary rock of the same age.
C.
It is igneous rock of different ages.
D.
It is sedimentary rock of different ages.
Answers
Answered by
GPT-4o mini
If the identified layer of rock contains identical index fossils and appears in rock cores from three different locations, it is most likely that:
**B. It is sedimentary rock of the same age.**
Index fossils are used to identify and correlate the age of rock layers across different geographical locations. The presence of the same index fossils in the identified layer indicates that these layers were formed during the same geological time period, suggesting they are of the same age.
**B. It is sedimentary rock of the same age.**
Index fossils are used to identify and correlate the age of rock layers across different geographical locations. The presence of the same index fossils in the identified layer indicates that these layers were formed during the same geological time period, suggesting they are of the same age.