number of downloads : ?
Title Transcription
シマネケン チュウブ マジ タカヤマ ヤタ キシロヤマ チイキ ニオケル オオエタカヤマ カザン フンシュツブツ ノ ガンソウ ブンプ ト ソレニ カンレンシタ シャメン ウンドウ
Title Alternative (English)
Lithofacies distribution of the Quaternary Oe-takayama Volcanic Products and related slope movements in the Maji-takayama to Yataki-shiroyama areas, Central Shimane, Japan
File
language
jpn
Author
Kimura, Takeshi
Tamura, Yukio
Yokota, Shuichiro
Description
 Field mapping of lithofacies distribution has been made to establish the volcanic stratigraphy of the Quaternary Oetakayama Volcanic Products in the Maji-takayama to Yataki-shiroyama areas, Central Shimane, Japan. The presence of at least three lava flow layers and three pyroclastic flow deposits were confirmed in the areas. With the exception of the lowest unit, the lavas and flow deposits are not continuous, and lateral change of lithofacies is remarkable. Fluvial gravels with thin tuffaceous silt layers also frequently occur, in addition to tuff breccias. Considering that the gravels are characterized by abundant dacite fragments, these may be correlative with the Shimano-hoshi Formation in the Gotsu area.
 The area is characterized by various slope movements including toppling, translational sliding, and debris avalanches. These movements occur not only on steep slopes on dacite, but also on varying slopes in other lithofacies. Especially, thin silt layers interbedded with tuff breccias sometimes cause local landslides because they are kinetically weak layers with impermeable properties. Consequently, the types of slope movements strongly depend on the lithofacies and slope structures in the areas.
Journal Title
島根大学地球資源環境学研究報告
Volume
28
Start Page
11
End Page
25
ISSN
13439774
Published Date
2009-12-25
NCID
AA11455176
Publisher
島根大学総合理工学部地球資源環境学教室
Publisher Aalternative
Department of Geoscience, Interdisciplinary Faculty of Science and Engineering, Shimane University
NII Type
Departmental Bulletin Paper
OAI-PMH Set
Interdisciplinary Graduate School of Science and Engineering
Remark
12-14,16+ / 1993+
他の一覧
このエントリーをはてなブックマークに追加