Question

1. base your answer to the question on the cross section below, which shows an underwater mountain range in the atlantic ocean. the oceanic bedrock is composed mainly of basalt, points x and y are locations in the bedrock that have been diverging at the same rate. the movement of the north american plate and eurasian plate is shown by the two arrows. (1 point) the basalt at location x is youunger than the basalt at location y. both locations have the same magnetic orientation. the basalts at location x and y are the same age. both have the same magnetic orientation. the basalt at location x and y are the same age. location x has normal magnetic orientation and location y has reversed magnetic orientation. the basalt at location x is older than the basalt at location y. location x has reversed magnetic orientation and location y has normal magnetic orientation.

Explanation:

At mid - ocean ridges (like the one shown where the North American Plate and Eurasian Plate are diverging), new basalt is formed. Since points X and Y are diverging at the same rate from the ridge, they are equidistant from the source of new basalt formation. So, they are the same age. Also, during normal magnetic periods, basalt forms with normal magnetic orientation. If the magnetic field was in the same state (normal or reversed) when both X and Y formed (which is likely as they are formed simultaneously at a mid - ocean ridge in the same magnetic epoch), they have the same magnetic orientation.

Answer:

The basalts at location X and Y are the same age. Both have the same magnetic orientation.