Ocean basins 3
Ocean basins 3
Ocean basins 3
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Magnetic time scale• Magnetic time scale based on polarities (normal, reversal) has been establishedback to about 170 Ma• Mesozoic lineations are M0 – M27 (120 – 160 Ma)• Late Cretaceous and Cenozoic lineations to the present are 1 – 34 (0 - 120 Ma)Note: Magnetic stripes have been observed on Mars. What is your interpretation?This suggests that many of the sameforces that continue to form Earth'stopography today have shaped Mars inthe distant past. Unlike the Earth,Mars's plate tectonic system appears tohave faded about four billion years ago11
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