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Title Transcription
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
Title Alternative (English)
Gravity flow deposits in the Miocene Ushikiri Formation exposed along the Susumi coast, Matsue, Japan(preliminary note)
File
language
jpn
Author
Tateishi, Ryo
Furukawa, Ayako
Description
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.
Journal Title
島根大学地球資源環境学研究報告
Volume
26
Start Page
25
End Page
33
ISSN
13439774
Published Date
2007-12-27
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+
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