Izanagi plate

The rapid plate motion of the Izanagi plate caused northwest Japan and the outer zone of southwest Japan to drift northward.

At approximately 55 Ma, the Izanagi Plate was completely subducted and replaced by the western Pacific plate, which also subducted in a northwestern direction.

Subduction-related magmatism took place near the Ryoke belt.

No marked tectonics occurred in the Abukuma belt after the change of the subducted plate.

The Izanagi plate was subsequently introduced in 1982 to explain the geometry of this spreading system.

The Izanagi plate in the Early Jurassic (180 Ma)