Abstract
In 1953, the author observed clear eye-blow fault scarps cutting new compound fans at the north-eastern foot of Mt. Koshiba in the southern margin of the Onikobe Basin, Miyagi Prefecture. The fault scarp runs about 1km from WNW to ESE and the maximum relative height of the scarp is 10m. Other parallel scarps are seen at the western end of that.
There are older fans at the upper part of new fans. The margins of the old fans are seemingly originated from old eye-blow fault scarps, because the end scarps of old fans are linear and are parallel to the former eye-blow fault scarps.
