アクセス数 : ?
ダウンロード数 : ?
ID 62929
タイトルヨミ
ヨシノガワタニ ミマチョウ ナカウエ ノ ドチュウソウ カラ ミイダサレタ コウド ヘンセイガンレキ
タイトル別表記
Gravels of high-grade metamorphic rock from the Dochu Formation, Nakaue, Yoshinogawa Valley, East Shikoku, Japan
著者
中尾, 賢一 徳島県立博物館
森江, 孝志 鷲敷中学校
キーワード
三波川変成岩
土柱層
変成岩礫
ざくろ石角閃岩
点紋角閃岩
資料タイプ
紀要論文
抄録
A condensed bed of the gravels derived from high-grade metamorphic rocks has firstly found in the lower Pleistocene Dochu Formation, from the Nakaue outcrop, Mima-cho in Tokushima Prefecture. The metamorphic gravels are garnet amphibolite, spotted amphibolite, serpentinite and coase grained piedmontite-quartz schist.
The content of the metamorphic gravels is nearly 10 percent. Comparison with the modern original gravels, based on the mineral composition and rock texture on the slab, the metamorphic gravels were identified with the Sambagawa Metamorphic Rocks. Among them, garnet amphibolite and spotted amphibolite are high-grade metamorphic rocks that the modern distribution is restricted only in the Higashi Akaishi-yama district, central Shikoku, and the amphibolite gravels are rarely found in recent Yoshino-gawa riverbed around the Mima-cho
area. The Nakaue outcrop and gravels of high-grade metamorphic rocks were described, and the provenance of the gravels was discussed with tectonic and geomorphological respects.
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
1
開始ページ
7
終了ページ
11
並び順
7
発行日
2009-03-16
EDB ID
フルテキストファイル
言語
jpn
部局
理工学系