Suppose a geologist is studying two distinct areas next to a spreading ridge. The magnetic direction of the minerals in the oldest area is opposite to the magnetic direction of minerals in the newest area.
a) Which area is closest to the center of the ridge, the older of the newer area? Explain.
b) What can the geologist conclude about Earth's magnetic field during the time when the two areas formed?
Thank you in advance! Geology is my weakest subject.