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)*+ The Median Tectonic Line in the Itayama area, Takato Town,Nagano Prefecture (a preliminary report) *ῌ**ῌ***ῌ !"#****ῌ$% &*****
Ikuo Hara*, Takami Miyamoto**, Keiichi Ikeda***, Katsutoshi Jijyuu**** and Tadasi Nagira*****
Abstract : The structural relationship between the Ryoke rocks and the Sambagawa
schists has been investigated in the Itayama area, Takato Town, Nagano Prefecture. Ithas been pointed out in this paper that the Ryoke rocks and the Sambagawa schists
slices construct a sandwitch-like structure with low-angle orientation, that the lowangle structure is cut across by two high-angle faults with NNE-SSW trend and clay
gouge, and that the high-angle faults (MTL-IV) are approximately correlated with theMedian Tectonic Line previously described by some authors.
Key words : Ryoke belt, Sambagawa belt, structural relationship, Median Tectonic Line'(ῌ        NNE-SSW         MTL  !"  + #   /  +  $%& '( !
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Oyo Corporation, -ῌ+ῌ-*, Minaga, Saeki-ku, Hiroshima,
1-+ῌ/+,., Japan** q-8 8 «EFwr:;stuv z¬
Department of Earth and Planetary Systems Science,Graduate School of Science, Hiroshima University, +ῌ-ῌ+,Kagamiyama, Higashi-Hiroshima, 1-3ῌ2/,0, Japan*** efg­®¯°±²³´hYachiyo Engineering Co.Ltd., ,ῌ+ῌ/ Arato, Chuo-ku,Fukuoka, 2+*ῌ**0,, Japan**** q-µi¶jYklm 22+22+ Ariki, Toyomatsu, Jinseki, Hiroshima Prefecture, 1,*ῌ
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Ohtomo, Y., +33-, Origin of the Median Tectonic
Line. Jour. Sci. Hiroshima Univ., Ser. C, 3, 0++῍003.
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