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Figure F4. Tectonic history of Shatsky Rise, illustrating the migration of ridges and triple junction (TJ) during formation of the rise. Dark magnetic lineations existed on the Pacific plate at the time given for each panel. Red lines = ridges, light purple lines = future isochrons, blue arrows = path of triple junction, yellow arrows = jumps and changes in direction (modified from Nakanishi et al., 1999).

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