ダウンロード数 : ?
タイトルヨミ
マツエシ シマネチョウ ススミ カイガン ノ チュウシントウギュウセツソウ ニ ミラレル ジュウリョクリュウ タイセキブツ ヨホウ
日本語以外のタイトル
Gravity flow deposits in the Miocene Ushikiri Formation exposed along the Susumi coast, Matsue, Japan(preliminary note)
ファイル
言語
日本語
著者
立石 良
古川 絢子
内容記述(抄録等)
Two types of gravity flow deposits were identified in outcrops of the Miocene Ushikiri Formation(middle to lower slope deposit)exposed along the Susumi coast, Matsue, Shimane Prefecture. The first type of sandstones contain turbidite, debrite and, in some cases, slumped deposit. The second type of beds display Bouma Ta-b character and were deposited from turbidity currents. Thin debrites are also seen in the top of some beds.
The debrite covering turbidite sandstone may have deposited from debris flow developed through the propagation of turbidity flow by supplying sediment to the flow via injection of liquefied substrata, or by simultaneous slumping. The absence of the debrite in the upper part can be explained by the scale of the flows being insufficient to cause liquifaction of substrata , slumping or erosion of substrata , and flattening of the topography due to sediment aggradation that suppresses gravitational effect such as slumps. Further detailed tracing of the individual sandstone beds in this formation may yield clues for the detailed evolutionary processes of gravity flows in the slope environment.
掲載誌名
島根大学地球資源環境学研究報告
26
開始ページ
25
終了ページ
33
ISSN
13439774
発行日
2007-12-27
NCID
AA11455176
DOI(SelfDOI)
出版者
島根大学総合理工学部地球資源環境学教室
出版者別表記
Department of Geoscience, Interdisciplinary Faculty of Science and Engineering, Shimane University
資料タイプ
紀要論文
ファイル形式
PDF
著者版/出版社版
出版社版
部局
(旧組織)大学院総合理工学研究科
備考
12-14,16+ / 1993+
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