近江盆地湖東平野の地下地質層序と堆積環境―日野川～愛知川下流域におけるボーリング試料の解析から―

• 大久保 茂子

  奈良女子大学

書誌事項

タイトル別名

• Sedimentary Sequence and Landform Development in the Kotoh Plain in the Ohmi Basin, Central Japan: Based on Analyses of Borehole Samples from the Lower Reaches of the Hino and the Echi Rivers
• オウミ ボンチ コトウ ヘイヤ ノ チカ チシツ ソウジョ ト タイセキ カンキョウ ヒノガワ エチガワ カリュウイキ ニ オケル ボーリング シリョウ ノ カイセキ カラ
• Based on Analyses of Borehole Samples from the Lower Reaches of the Hino and the Echi Rivers
• -日野川～愛知川下流域におけるボーリング試料の解析から-

抄録

The author studied the alluvial lowland in the lower reaches of the Hino and the Echi Rivers, to clarify landform development of the Kotoh plain to the east shore of Lake Biwa, central Japan, during the middle and late Pleistocene.<BR>Four major litho-stratigraphic units (A-D) and five tephra layers (Sakate, AT, DNP, hpm2, Ng-1) were detected from standard penetration test samples of Kominami borehole site cores from the lower reaches of the Hino River. Judging from the facies of the borehole samples and a geological cross-section through the Kominami site in the lower reaches of the Hino and the Echi Rivers, coarse sediments were deposited at least 4 or 5 times during the last 300 ka and the distribution of gravel deposits was much larger especially during the period from ca. 80 to 27 ka than at present. The appearance and shrinkage of the area where gravels were deposited seem to be related to interglacial-glacial or the interstadial-stadial cycles.

収録刊行物

• 地学雑誌

  地学雑誌 116 (5), 627-642, 2007

  公益社団法人 東京地学協会

キーワード

• 湖東平野
• ボーリング試料
• 堆積層層序
• テフラ
• 砂礫堆積域

詳細情報

• CRID: 1390001204228911872
• NII論文ID: 10025677107
• NII書誌ID: AN00322536
• DOI: 10.5026/jgeography.116.5_627
• ISSN: 18840884
• ISSN: 0022135X
• ISSN: http://id.crossref.org/issn/0022135X
• NDL書誌ID: 8985501
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8985501
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可