earth

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 centre of the
ridge, the older or newer area? Explain.
(b) What can the geologist conclude about
Earth’s magnetic field during the time
when the two areas formed?

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asked by Lily
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