Which example describes a method of relative dating?
A.
using fossils to determine the oldest rock layer in a canyon
B.
using radioactive isotopes to calculate the age of a rock
C.
measuring the depth of tree bark
D.
examining historical records to determine when a volcano erupted
9 years later about to be 10 :/
I'll be glad to check your answer.
B.. Using fossils.....
The correct answer is A. Using fossils to determine the oldest rock layer in a canyon is an example of relative dating.
Relative dating is a method used to determine the age of rocks or geological events in relation to other rocks or events. It does not provide an exact age, but instead establishes a sequence of events or the order in which they occurred.
To determine the oldest rock layer in a canyon using fossils, you would look for index fossils. Index fossils are fossils that are widely distributed and found in a particular time period. By finding the same index fossil in different rock layers, you can determine that the layer containing the index fossil must be older than the layers above it and younger than the layers below it. This relative dating method is based on the principle of faunal succession, which states that fossil species succeed each other in a definite, recognizable order.
Therefore, by comparing the fossils found in different rock layers within a canyon, you can determine the relative ages of the rocks and establish a sequence of events.