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北海道北部、クトネベツ川低地における完新世後半の泥炭地の形成
http://hdl.handle.net/10458/1389
http://hdl.handle.net/10458/1389d48f41de-d7aa-436e-b7d1-847cef8fdce9
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KJ00000228692.pdf (1.1 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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| 公開日 | 2008-03-21 | |||||
| タイトル | ||||||
| タイトル | 北海道北部、クトネベツ川低地における完新世後半の泥炭地の形成 | |||||
| 言語 | ja | |||||
| タイトル | ||||||
| タイトル | Late Holocene Peatland Development in the Kutonebetsu River Lowland, Northern Hokkaido,Japan | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | riverine-coastal lowland, pcatland, sea-level changes, AMS radiocarbon dating, FeS2, content analysis | |||||
| キーワード | ||||||
| 言語 | ja | |||||
| 主題Scheme | Other | |||||
| 主題 | 沖積低地, 泥炭地, 海水準変動, AMS14C年代測定, FeS2含有量分析 | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| その他（別言語等）のタイトル | ||||||
| その他のタイトル | ホッカイドウ ホクブ クトネベツガワ テイチ ニオケル カンシンセイ コウハン ノ デイタンチ ノ ケイセイ | |||||
| 言語 | ja-Kana | |||||
| 著者 |
大平, 明夫
× 大平, 明夫 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The author discussed the late Holocene peatland development in the Kutonebetsu River Lowland, a riverine-coastal lowland, in relation to relative sea-level changes. The Kutonebetsu River Lowland locates in the western coast of the northern part of Hokkaido Island. Discussions are based on results from the interpretation of aerial-photographs, hand-boring surveys, radiocarbon dating using accelerator mass spectrometer (AMS) and FeS2, content analysis of the sediment. Two Holocene geomorphic surfaces can be recognized in this lowland. The Holocene sediments consist of a thick clay layer and a 2- to 3-meter-thick herbaceous peat layer overlying basal Neogene mudstone. Judging from the results of FeS2 content analysis, the upper part of the clay layer was deposited in brackish-water environment and the peat layer was deposited in fresh-water environment. Late Holocene geomorphic changes of this lowland can be summarized as follows ; In the middle Holocene, relative sea-level reached to a little-higher than the present sea-level, and brackish lagoon spread behind coastal barrier. After about 4,000 yrBP, peatland (upper Halocene surface) began to form from the edge of the lagoon. In about 2,900 yrBP, when relative sea-level probably fell, the water-level of the lagoon also dropped and peatland rapidly expanded to lagoon. After that, the river dissected the older surfaces and developed floodplain (lower Holocene surface). This geomorphic changes reveal that late Holocene sea-level fluctuation was important factor for the peatland formation in this lowland, and that the tectonic uplift probably occurred in the western coast of northern Hokkaido during the late Holocene. |
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| 言語 | en | |||||
| 書誌情報 |
ja : 宮崎大学教育文化学部紀要. 自然科学 en : Memoirs of the Faculty of Education and Culture, Miyazaki University. Natural science 巻 3, p. 1-11, 発行日 2000-09-30 |
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| 出版者 | ||||||
| 出版者 | 宮崎大学教育文化学部 | |||||
| 言語 | ja | |||||
| 出版者 | ||||||
| 出版者 | The Faculty of Education and Culture, University of Miyazaki | |||||
| 言語 | en | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 13454021 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA11403456 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
