Estimate the thickness of oceanic lithosphere that is (a)
5 million, (b) 10 million, (c) 20 million, and (d) 50 million years old.
1. Given the results you obtained in the previous
problem, how would you describe a plot of oceanic lithosphere thickness as a
function of age of the lithosphere?
2. Near the Hawaiian Islands, the Pacific Plate is moving
to the northwest at a speed of about 7 cm (~2.76 in) per year. How far will the
Island of Oahu move in 30 million years? Give your answer in kilometers and
miles. Compare this with the distance between Los Angeles, California, and New
York, New York.