地層抜き取り調査とボーリング調査による糸静線活断層系・神城断層のスリップレートの検討

今泉 俊文; 原口 強; 中田 高; 奥村 晃史; 東郷 正美; 池田 安隆; 佐藤 比呂志; 島崎 邦彦; 宮内 崇裕; 柳 博美; 石丸 恒存

doi:10.11462/afr1985.1997.16_35

Slip rates on the Kamishiro active fault along the northern part of the Itoigawa-Shizuoka Tectonic Line, detected by long geo-slicer and drilling

Toshifumi IMAIZUMI, Tsuyoshi HARAGUCHI, Takashi NAKATA, Koji OKUMURA, Masami TOGO, Yasutaka IKEDA, Hiroshi SATO, Kunihiko SHIMAZAKI, Takahiro MIYAUCHI, Hiromi YANAGI, Koson ISHIMARU

Author information

Toshifumi IMAIZUMI
Department of Geography, Yamanashi University
Tsuyoshi HARAGUCHI
Faculty of Engineering, University of Tokyo / Fukken Co., Ltd
Takashi NAKATA
Department of Geography, Hiroshima University
Koji OKUMURA
Department of Geography, Hiroshima University
Masami TOGO
Laboratory of Physical Geography, Hosei University
Yasutaka IKEDA
Department of Geography, University of Tokyo
Hiroshi SATO
Earthquake Research Institute, Universit y of Tokyo
Kunihiko SHIMAZAKI
Earthquake Research Institute, Universit y of Tokyo
Takahiro MIYAUCHI
Department of Geoscience, Chiba University
Hiromi YANAGI
Department of Earth-environmental Science, Hokkai do University
Koson ISHIMARU
Tono Geoscience Center, Power Reactor and Nuclear Fuel Development Corporation

Keywords: Kamishiro fault, long geo-slicer, drilling, 14C dating, slip rate

JOURNAL FREE ACCESS

1997 Volume 1997 Issue 16 Pages 35-43

DOI https://doi.org/10.11462/afr1985.1997.16_35

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Abstract

A new sampling technique using ten meter long geo-slicers in addition to drilling was applied across the Kamishiro fault, northern part of the Itoigawa-Shizuoka Tectonic Line. Slip rates of the Kamishiro fault in the Kamishiro Basin is estimated be ca.1.5mm/yr since about 18,000 years B. P., based on the interpretation of geological section in size of 20m×25m and ¹⁴C dating of woody and peaty materials sampled.

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