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[edit] Краткое описание
A theoretical model of the formation of magnetic striping. New oceanic crust forming continuously at the crest of the mid-ocean ridge cools and becomes increasingly older as it moves away from the ridge crest with seafloor spreading:
- a. the spreading ridge about 5 million years ago.
- b. about 2 to 3 million years ago.
- c. present-day.
http://pubs.usgs.gov/publications/graphics/Fig7.gif
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