Outcrops around the Kamishiro fault, Nagano Prefecture, Central Japan

Kenta KOBAYASHI; Masato KONAKAWA; Takuma KATORI; Keisuke IIDA

Presentation information

Oral

Symbol S (Solid Earth Sciences) » S-SS Seismology

[S-SS28] Active faults and paleoseismology

Thu. May 28, 2015 4:15 PM - 6:00 PM A04 (APA HOTEL&RESORT TOKYO BAY MAKUHARI)

Convener:*Takashi AZUMA(National Institute of Advanced Industrial Science and Technology), Nobuhiko Sugito(Faculty of Humanity and Environment, Hosei University), Satoshi Tonai(Department of Applied Science, Faculty of Scienece, Kochi University), Toshikazu Yoshioka(Active Fault and Earthquake Research Center, National Institute of Advanced Industrial Science and Technology), Chair:Takashi AZUMA(National Institute of Advanced Industrial Science and Technology)

4:45 PM - 5:00 PM

[SSS28-27] Outcrops around the Kamishiro fault, Nagano Prefecture, Central Japan

*Kenta KOBAYASHI¹, Masato KONAKAWA², Takuma KATORI², Keisuke IIDA¹ (1.Dep. Geol., Fac. Sci., Niigata Univ., 2.Grad. Sch. Sci. & Tech., Niigata Univ.)

Keywords:Nagano Prefecture, Hakuba Village, Kamishiro fault, active fault, outcrop, fault gouge

We observed active fault outcrops considered to be related to the 2014 Nagano-Ken Kamishiro fault earthquake (M6.7). Altered tuff breccia (Miocene Iwato-Yama Formation) overlies Middle terrace deposits. Bounding thrust plane is dipping SE. Based on the observed Y-P-R1 fabric and slickenlines, reverse sense with a minor sinistral slip are determined.