Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Otani, Tomoyuki*; Morikawa, Koichiro*; Kojima, Satoru*; Kakamu, Kazuhiko
no journal, ,
Mass transfer along the latest slip plane is examined by geological, petrological and geochemical studies in a fracture zone outcrop of the Atera Fault, which is displaced in 1586 Tensho Earthquake. Whole rock chemical composition shows that the sharp dark brownish gouge is remarkably Mn-rich compared to other gouges and host rocks. The fact indicates that Mn-oxides or -hydroxides were precipitated due to the latest slip along the dark brownish gouge.
Otani, Tomoyuki*; Kutsuna, Ryosuke*; Kojima, Satoru*; Ohashi, Kiyokazu*; Kakamu, Kazuhiko
no journal, ,
Development of technique in order to judge the activities of fault using chemical characteristics of active faults is useful for the assessment of faults at geological disposal sites. In this study, element transfer at fault gauge was examined. MnO contents were enriched at fault gauge of the Adera and Neodani faults. Most of Mn-bearing minerals are amorphous, it is suggested that Mn-bearing minerals were precipitated from reduced groundwater at oxidized condition when fault gauge were formed.
Kutsuna, Ryosuke*; Otani, Tomoyuki*; Kojima, Satoru*; Kakamu, Kazuhiko
no journal, ,
Development of technique in order to judge the activities of fault using chemical characteristics of active faults is useful for the assessment of faults at geological disposal sites. In this study, element transfer at fault gauge in Neodani fault was examined. Fault gauge were consist of khaki and dark-gray alteration of layer and brown layer. The origin of dark-gray and brown layers are mudstone, and MnO contents were enriched from the source rock to the fault gauge. It is suggested that Mn-bearing minerals were precipitated from reduced groundwater at oxidized condition when fault gauge were formed.
Tsuruta, Tadahiko; Ochi, Minoru; Yuguchi, Takashi; Tagami, Masahiko; Kakamu, Kazuhiko; Yoshida, Hidekazu*; Nishimoto, Shoji*; Nishiyama, Tadao*; Nakamata, Kiminori*
no journal, ,
no abstracts in English
Kutsuna, Ryosuke*; Otani, Tomoyuki*; Kojima, Satoru*; Enami, Masaki*; Kakamu, Kazuhiko; Wakai, Shoji
no journal, ,
no abstracts in English
Otani, Tomoyuki*; Kutsuna, Ryosuke*; Kojima, Satoru*; Wakai, Shoji; Kakamu, Kazuhiko; Enami, Masaki*
no journal, ,
no abstracts in English
Otani, Tomoyuki*; Yamashita, Mitsumasa*; Kojima, Satoru*; Wakai, Shoji; Kakamu, Kazuhiko
no journal, ,
no abstracts in English
Otani, Tomoyuki*; Yamashita, Mitsumasa*; Kojima, Satoru*; Wakai, Shoji*; Kakamu, Kazuhiko
no journal, ,
no abstracts in English
