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On the Tanakura Sheared zone in the SW Margih of the Abukuma Mountainland (Study of Cenozoic History of Southwestern Margin of Abukuma Plateau Pt., 3)

1953; The Meteorological Society of Japan; Volume: 59; Issue: 693 Linguagem: Inglês

10.5575/geosoc.59.217

1349-9963

Masae OMORI, Kazue HORIKOSHI, Koji SUZUKI, Yukinori FUJITA,

Earthquake and Disaster Impact Studies

Tanakura sheared zone, locating in the southwestern margin of the Abukuma mountainland, runs through Tanakura-machi from Ota-machi, Ibaraki Pref., to the west of Sukagawa-machi, Fukushima Pref., with a direction of NNW., It is bordered with a great fault of same direction, and consists of the older rocks, found in the Yamizo and Abukuma mountainland, Tertiary rocks, distributed along the river Kuji and sheared rocks of them., Tanakura tectonic zone, existed in the nearly same area during the Pre-Tertiary period, acted again in the Tertiary period controlling the condition of their sediments., And as a result of the accumlative faulting movement at the close of Mioc., it shows the present Takakura sheared zone.,