2026-03-14T23:36:20Z https://kumadai.repo.nii.ac.jp/oai

oai:kumadai.repo.nii.ac.jp:00028771 2026-01-19T04:15:56Z 399:562 585:620:740

加久藤火砕流堆積物から構成される段丘堆積物の地質学的意義 : 熊本県人吉市大畑町東方を流れる小纚川を例にして カクトウ カサイリュウ タイセキブツ カラ コウセイ サレル ダンキュウ タイセキブツ ノ チシツガク テキ イギ : クマモトケン ヒトヨシシ オコバマチ トウホウ オ ナガレル コサデガワ オ レイ ニ シテ Geological Significance of the Fluvial Terrace Deposits contained in the Kakuto Pyroclastic Flow Deposits : The case of Kosade River at the east of Okoba in Hitoyoshi City, Kumamoto Prefecture 田中, 均 タナカ, ヒトシ Tanaka, Hitoshi 三宅, 由洋 ミヤケ, ヨシヒロ Miyake, Yoshihiro 村本, 雄一郎 ムラモト, ユウイチロウ Muramoto, Yuichiro 450 Kakuto Pyroclastic Flow Deposits Fluvial Terrace Deposits Kosade River Hitoyoshi City Kumamoto Prefecture The Kosade River is a branch in the Kuma River located at the east of Okoba in the Hitoyoshi City, Kumamoto Prefecture. The bulk of the basement rocks is represented by the Cretaceous to Lower Miocene strata (Shimanto Group). They are composed of sandstone, mudstone, alternating beds of sandstone and mudstone, and so on. The Shimanto Group is overlain by the Kakuto Pyroclastic Flow and the Fluvial Terrace Deposits. Moreover, all gravels of this Fluvial Terrace deposits are composed of Kakuto Pyroclastic Flow Deposits. According to research, an erosion amount of the lower reaches of the Kosade River is larger than that of the upper, compared with a general river. Therefore, the purpose of the study is to examine the geotectonic history of the Kosade River from all geological and geomorphological information of the Kakuto Pyroclastic Flow Deposits and the terrace deposits. With further regard to this study, fundamental knowledge of the unique geologic conditions related to Quaternary tectonic movement is indispensable to the geomorphic history of the basin of the Kosade River. 熊本大学 2014-12-12 jpn departmental bulletin paper VoR http://hdl.handle.net/2298/31664 https://kumadai.repo.nii.ac.jp/records/28771 2188-1871 AA12653153 熊本大学教育学部紀要 63 363 368 https://kumadai.repo.nii.ac.jp/record/28771/files/KKK0063_363-368.pdf application/pdf 7.1 MB 2020-03-03