Question

what is the age of the oceanic crust at location \x\?
2 m.y.
6 m.y.
4 m.y.
5 m.y.

Explanation:

Step1: Analyze the Diagram

The diagram shows oceanic crust formation at a mid - ocean ridge (the "Today" or 0 my mark). The crust moves away from the ridge over time. The location "X" is on the opposite side of the ridge from the 6 my mark, and the distance from the ridge to "X" seems to correspond to a time that is double the time from the ridge to a symmetric point? Wait, no, looking at the age scale on the right, the 6 my mark is on one side. The oceanic crust at location X: since the crust forms at the ridge (0 my) and moves outward, the age of the crust at X should be related to the distance from the ridge. Looking at the options and the diagram, the symmetric point to the 6 my mark on the other side of the ridge would be such that the total age from the ridge to X (on the other side) would be, if we consider that the crust on both sides moves at the same rate, the age at X should be 6 my? Wait, no, maybe I misread. Wait, the options are 2 my, 4 my, 5 my, 6 my. Wait, no, let's think again. The mid - ocean ridge is at 0 my. The crust on the right side has ages 1,2,3,4,5,6 my as we move away from the ridge. The location X is on the left side, symmetric to the 6 my mark on the right? No, maybe the distance from the ridge to X is such that the age is 6 my? Wait, no, maybe the diagram is a magnetic stripe pattern, and the age of the crust at X: since the crust forms at the ridge (0 my) and each stripe represents a time interval. If we look at the left side, the location X is at a position that is equivalent to the 6 my mark on the right? Wait, no, maybe the answer is 6 my? Wait, no, let's check the options. The options are 2 my, 4 my, 5 my, 6 my. Wait, maybe I made a mistake. Wait, the oceanic crust at location X: the ridge is at 0 my. The crust moves away from the ridge, so the age of the crust at X is the time since it was formed at the ridge. If we look at the diagram, the right side has ages 1,2,3,4,5,6 my as we move away from the ridge. The left side (location X) is at a position that is symmetric to the 6 my mark on the right? So the age at X should be 6 my? Wait, but maybe not. Wait, no, maybe the correct answer is 6 my. Wait, no, let's re - evaluate. The key is that oceanic crust forms at the mid - ocean ridge (0 age) and gets older as it moves away. The location X is on the opposite side of the ridge from the 6 my mark, so the age of the crust at X should be 6 my.

Answer:

6 my (assuming the option is "6 my")