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Journal Articles

Characteristics of fault fracture zones of the activated Shionohira Fault and the non-activated Kuruma Fault of the 2011 Fukushima-ken Hamadori Earthquake, Northeast Japan

Aoki, Kazuhiro; Tanaka, Yukumo; Yoshida, Takumi; Shimada, Koji; Sakai, Toru*; Kametaka, Masao*; Seshimo, Kazuyoshi

Oyo Chishitsu, 62(2), p.64 - 81, 2021/06

Co-seismic surface ruptures in the Fukushima-ken Hamadori Earthquake of Mw 6.7 on April 11, 2011 exposed approximately 14 km trending NNW-SSE from Nameishi to northwest of Ishizumi Tsunaki of Tabito Town, Iwaki City and were newly named the Shionohira Fault. However, no surface ruptures appeared along an N-S trending active Kuruma fault extending 5 km south of the Shionohira Fault. Because of the proximity and similar strike, two locations in Shionohira Fault and one location in Kuruma fault were selected as the study area for the fault activity evaluation. The present study reports the results of a series of geological and drilling surveys, core observation, XRD, isotope, and fluid inclusion analyses, and water permeability test. The results obtained from the three locations offer a fundamental data base that can be utilized for fault activity evaluation by summarizing the geological, mineralogical, and fluid property characteristics of fault fracture zone.

Journal Articles

Examination of evaluation method for fault activity based on morphological observation of fault planes

Tanaka, Yoshihiro*; Kametaka, Masao*; Okazaki, Kazuhiko*; Suzuki, Kazushige*; Seshimo, Kazuyoshi; Aoki, Kazuhiro; Shimada, Koji; Watanabe, Takahiro; Nakayama, Kazuhiko

Oyo Chishitsu, 59(1), p.13 - 27, 2018/04

This paper aims to develop a methodology for understanding the fault activity by observing exposed fault planes without covering younger strata. Based on purpose, faults developed in relatively homogeneous rocks such granitic types are investigated as follows; Gosuke Dam upstream outcrop of Gosukebashi Fault and Funasaka-nishi outcrop of Rokkou Fault were selected for the study of an active fault; and K-3 outcrop of Rokkou Houraikyo Fault was chosen for a non-active fault.

Journal Articles

A Sampling method of oriented small sample from fault cores for SEM observation

Shimada, Koji; Kametaka, Masao*; Nakayama, Kazuhiko; Seshimo, Kazuyoshi; Tanaka, Yoshihiro; Hayashi, Toshio*; Tanaka, Yukumo; Shimogama, Kota*; Okazaki, Kazuhiko*

Chishitsugaku Zasshi, 119(11), p.727 - 731, 2013/11

Staples for a stapler can be used as a frame of a small oriented sample taken from fragile and scarce fault gouge. The fault gouge was slotted for staples of an insert. Staples are a group of about ten or less ones holding right-angled three small surfaces. Pre-oriented staples set the slot would remove then presented for the SEM observation. Only a knife, some glues and simple equipment are needed for the method in the field or laboratories.

Oral presentation

Microstructure observation of oriented samples from fault zone using scanning electron microscope

Nakayama, Kazuhiko; Shimada, Koji; Seshimo, Kazuyoshi; Tanaka, Yoshihiro; Kametaka, Masao*; Okazaki, Kazuhiko*; Shimogama, Kota*; Hayashi, Toshio*

no journal, , 

no abstracts in English

Oral presentation

Mechanical test for the determination of shear sense from experimentally deformed fault gouge samples

Kametaka, Masao*; Nakayama, Kazuhiko; Aoki, Kazuhiro; Seshimo, Kazuyoshi; Shimada, Koji; Tanaka, Yoshihiro; Okazaki, Kazuhiko*; Funato, Akio*; Hayashi, Toshio*

no journal, , 

no abstracts in English

Oral presentation

Examination of evaluation method for fault activity based on an observation of fault zone; Selection of outcrops, in-situ experiments

Kametaka, Masao*; Okazaki, Kazuhiko*; Nakayama, Kazuhiko; Seshimo, Kazuyoshi; Aoki, Kazuhiro; Tanaka, Yoshihiro; Shimada, Koji; Suzuki, Kazushige*; Shimogama, Kota*; Inada, Noriyuki*

no journal, , 

The evaluation of an fault activity has been done by an observation of deformation of overlying strata of the fault. However, it is difficult to evaluate the activity where the fault zone appears only in a basement rock with no overlying strata. We have been carried out the observation of the fault zone to establish the method of evaluation of fault activity. We selected the outcrops through literature and surface geological survey. Examples of outcrops of active fault are outcrops of Gosukebashi Fault in the Rokko-Awaji Fault Zone and the Rokko Fault in the Arima-Takatsuki Tectonic Line, southern Hyogo Prefecture. An example of non-active fault is outcrop of the fault around the Rokko Horai-kyo in the northern Rokko Mountains. In this study, we focus on the easy evaluation method in the field, and described about suitability of observation of fault plane, in-situ experiments of hardness and color.

Oral presentation

The Property of fault zone and fault activity of the Shionohira Fault, Fukushima Prefecture, Japan

Kametaka, Masao*; Sakai, Toru*; Inada, Noriyuki*; Tanaka, Yumiko*; Okazaki, Kazuhiko*; Suzuki, Yuji*; Aoki, Kazuhiro; Tanaka, Yoshihiro; Seshimo, Kazuyoshi; Nakayama, Kazuhiko

no journal, , 

no abstracts in English

Oral presentation

Frictional properties of Shionohira Fault Gouge

Aoki, Kazuhiro; Seshimo, Kazuyoshi; Tanaka, Yoshihiro; Kametaka, Masao*; Sakai, Toru*; Okazaki, Kazuhiko*; Shimamoto, Toshihiko*

no journal, , 

no abstracts in English

Oral presentation

Chemical composition variation in fault rocks from Rokko fault and Gosukebashi fault

Shimizu, Mayuko; Niwa, Masakazu; Aoki, Kazuhiro; Kametaka, Masao*

no journal, , 

no abstracts in English

Oral presentation

Oriented core samples from the Shionohira fault, Fukushima Prefecture, Japan

Suzuki, Yuji*; Kametaka, Masao*; Murata, Seiichi*; Aoki, Kazuhiro; Tanaka, Yoshihiro; Seshimo, Kazuyoshi; Sakai, Toru*

no journal, , 

no abstracts in English

Oral presentation

The Property of fault zone and sense of displacement on the Shionohira Fault, Fukushima Prefecture, Japan

Sakai, Toru*; Kametaka, Masao*; Tanaka, Yumiko*; Aoki, Kazuhiro; Tanaka, Yoshihiro; Niwa, Masakazu; Seshimo, Kazuyoshi

no journal, , 

no abstracts in English

Oral presentation

Fault properties of the Shionohira Fault and its southern extension in Fukushima and Ibaraki Prefectures, Japan

Kametaka, Masao*; Sakai, Toru*; Tanaka, Yumiko*; Aoki, Kazuhiro; Tanaka, Yoshihiro*; Seshimo, Kazuyoshi; Niwa, Masakazu; Masuda, Yuki

no journal, , 

no abstracts in English

Oral presentation

Frictional properties of Shionohira Fault Gouge, 2; A Comparison with Kuruma Fault Gouge at the southern extension of Shionohira Fault

Aoki, Kazuhiro; Seshimo, Kazuyoshi; Tanaka, Yoshihiro*; Niwa, Masakazu; Masuda, Yuki; Kametaka, Masao*; Sakai, Toru*; Shimamoto, Toshihiko*

no journal, , 

no abstracts in English

Oral presentation

Frictional properties of main fault Gouge of Mont Terri, Switzerland

Seshimo, Kazuyoshi; Aoki, Kazuhiro; Kametaka, Masao*; Nussbaum, C.*; Shimamoto, Toshihiko*; Ma, S.*; Yao, L.*

no journal, , 

no abstracts in English

Oral presentation

Frictional properties of Main Fault Gouge of Mont Terri, Switzerland

Aoki, Kazuhiro; Seshimo, Kazuyoshi; Guglielmi, Y.*; Nussbaum, C.*; Shimamoto, Toshihiko*; Ma, S.*; Yao, L.*; Kametaka, Masao*; Sakai, Toru*

no journal, , 

Oral presentation

Frictional properties of Shionohira Fault Gouge, 2; A Comparison with Kuruma Fault Gouge at the southern extension of Shionohira Fault

Seshimo, Kazuyoshi; Aoki, Kazuhiro; Tanaka, Yukumo; Niwa, Masakazu; Shimamoto, Toshihiko*; Ma, S.*; Yao, L.*; Kametaka, Masao*

no journal, , 

Oral presentation

Fault reactivation experiment and frictional properties of Mont Terri Rock Laboratory, Switzerland

Aoki, Kazuhiro; Seshimo, Kazuyoshi; Nussbaum, C.*; Guglielmi, Y.*; Shimamoto, Toshihiko*; Sakai, Toru*; Kametaka, Masao*; Ma, S.*; Yao, L.*

no journal, , 

In order to contribute to the Fault Slip experiment, JAEA has performed friction experiment of borehole cores of the measured interval using a rotary-shear low to high-velocity friction apparatus at Institute of Geology, China Earthquake Administration. Friction experiments were done either dry with room humidity or with 30wt% of H$$_{2}$$O, at a normal stress of 1.4 and 4.0 MPa and at low to intermediate slip rates ranging 0.21 microns/s to 2.1mm/s. Cylindrical specimens of Ti-Al-V alloy with 40 mm in diameter were used as rotary and stationary pistons and the alloy pistons exhibit similar behaviors as host rock specimens.

Oral presentation

Double pipe type fixed axis sampling method applied to fracture zone of Shionohira and Kuruma Fault

Suzuki, Yuji*; Kametaka, Masao*; Aoki, Kazuhiro; Seshimo, Kazuyoshi; Murata, Seiichi*

no journal, , 

no abstracts in English

Oral presentation

Micro-textures of deformed gouges by friction experiments of Mont Terri Main Fault, Switzerland

Aoki, Kazuhiro; Seshimo, Kazuyoshi; Sakai, Toru*; Komine, Yusuke*; Kametaka, Masao*; Watanabe, Takahiro; Nussbaum, C.*; Guqlielmi, Y.*

no journal, , 

Oral presentation

Study on fault activity evaluation method (A new attempt to understand fault activities), 2; Injection experiment using a SIMFIP probe at Shionohira Fault and southern fault

Watanabe, Takahiro*; Tanaka, Yukumo; Aoki, Kazuhiro; Guglielmi, Y.*; Cook, P.*; Soom, F.*; Wakahama, Hiroshi*; Nojo, Haruka*; Iwasaki, Etsuo*; Kametaka, Masao*; et al.

no journal, , 

no abstracts in English

22 (Records 1-20 displayed on this page)