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Progress in Earth and Planetary Science
Fig. 12 | Progress in Earth and Planetary Science

Fig. 12

From: Clockwise rotation of SW Japan and timing of Izanagi–Pacific ridge subduction revealed by arc migration

Fig. 12

Schematic illustration of magma arc configuration changes in SW and NE Japan for the periods 130–60 Ma (A) and 46–30 Ma (B) and the present (C) in map view. The colored bars indicate the general locations of arc fronts. Subduction of the Izanagi-Pacific Ridge between 60 and 46 Ma produced a magmatic hiatus, and the change in convergence vector associated with the change in the subducting plate induced a 20° clockwise rotation (CW) of the inner zone of SW Japan and possibly the Korean peninsula. B The blue dotted line indicates that the eastern part of the paleo-magmatic arc has been eroded to a greater extent in the east in association with MTL activity during the period 60–46 Ma. For simplicity, the TTL–ISTL regions where the IBM arc collided with the other Japanese arcs and the location of the magmatic arc after 30 Ma are not shown in (C)

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