Origin of scarplets around Mt. Noguchigoro-dake in the Japan Alps, central Japan.

Abstract

The formation mechanism of the uphill-facing scarps on the slopes around Mt. Noguchigoro-dake can be inferred as follows. During the Pleistocene period, rapid tectonic uplift has occurred, with consequent rapid erosion by streams. Therefore, rapid removal of lateral support and the accompanying release of stress has occurred. Gravitational action probably caused tensional spreading on the ridge. Movement along these fractures are formed parellel to the long axis of the ridge. As a result, the tension fractures are formed uphill-facing scarps. -from English summary