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Sea-floor spreading rates

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I need to figure out the mathematical equation to figure out how far away a seamount is from the median valley of the spreading ridge of a mid ocean ridge. I have the distance of one seamount (200km) which is 10 million years old (at a depth of 4km from the ocean surface) and I need to figure out the distance of a seamount that is 3km deep and 5 million years old. I don't need the answer, I just need to figure out how to input the numbers into an equation that would give me the answer.

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Solution Summary

A simple problem addressing how how to figure out sea-floor spreading rate.

Solution Preview

OK...the depth is extraneous info that is there to confound you. The key is the time/distance ...

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