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ID 74538
タイトルヨミ
シコク チュウオウブ ニシイシハラ チイキ ニオケル ミカブ リョクショク ガンルイ ノ チシツ コウゾウ
タイトル別表記
Geological structures of the Mikabu greenstones of the Nishi-ishihara Area,Central Shikoku
著者
村田, 明広 徳島大学大学院ソシオ・アーツ・アンド・サイエンス研究部 徳島大学 教育研究者総覧 KAKEN研究者をさがす
前川, 寛和 大阪府立大学大学院理学系研究科物理科学教室
キーワード
Mikabu greenstones
Nishi-ishihara thrust
Kamiyakawa-Ikegawa Tectonic Line
Kamiyakawa-Ikegawa antiform
geological structures
Sanbagawa metamorphism
Shikoku
Northern Chichibu Terrain
資料タイプ
紀要論文
抄録
Geological structures of the Mikabu greenstones and northern margin of the Chichibu
Terrain are studied in the Nishi-ishihara Area, Central Shikoku. The Mikabu greenstones are not
considered to occur in the area between Nishi-ishihara and Kamiyakawa in Central Shikoku,
because of the existence of the Nishi-ishihara thrust. This study, however, clarified that the
Mikabu greenstones composed of tuff and tuff breccia occur in a narrow zone there. Therefore,
the Mikabu greenstones are considered to expose continuously from Nishi-ishihara to west of
Kamidoi.
The Mikabu greenstones are intercalated in the Jurassic accretionary complex, and form an
antiform. The antiform of the Nishi-ishihara area can be traced to the Nanokawa area in Middle
West Shikoku, and also affects the Mikabu greenstones near Mt. Zohshi-yama. Jurassic
complex under the Mikabu greenstones lies in the axial part of the antiform. The complexes of
the northern and southern limbs have the same lithologic characters with each other. The
Kamiyakawa-Ikegawa Tectonic Line, which runs along the antiformal hinge, is not a fault
separating the Sanbagawa Metamorphic Terrain from the Northern Chichibu Terrain.
掲載誌名
徳島大学総合科学部自然科学研究 = Natural Science Research, The University of Tokushima
ISSN
09146385
cat書誌ID
AN10065859
23
3
開始ページ
73
終了ページ
81
並び順
73
発行日
2009
フルテキストファイル
言語
jpn
部局
理工学系