ID 84176
Title Transcription
シコク サンチ カラ ケンシュツ サレタ テフラ ニ モトズク サンチ シャメン ノ チョウキ アンテイセイ
Title Alternative
Long term stability of mountain slope based on tephrochronology in Shikoku Mountains, Tokushima, Japan
Author
Nishiyama, Ken-ichi Laboratory of Geology, Institute of Socio-Arts and Sciences, University of Tokushima Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Tamura, Toshiyuki Nita Consultant Co., Ltd
Keywords
tephra
K-Ah
AT
Shikoku mauntains
slope failure
Content Type
Departmental Bulletin Paper
Description
Formative processes of mountain slope in Shikoku Mountains are discussed based on tephrochronology. We
carried out identification of tephra layers in colluvial deposits at mountain slope, Shikoku Mountains, Tokushima
Prefecture. These tephras named locally Ohyohchi, Nakaue-1 and -2 tephras. Ohyohchi tephra and Nakaue-1
tephra are correlative with AT tephra from South Kyushu, and Nakaue-2 tephra is correlative with K-Ah tephra
from South Kyushu, in terms of the similarities of petrography, refractive index of volcanic glass. The
occurrence of these tephra layers shows that K-Ah tephra overlies colluvial deposits including AT tephra. Thus,
recurrence interval of slope failure was estimated to be more than ten thousand years.
Journal Title
徳島大学総合科学部自然科学研究 = Natural Science Research, The University of Tokushima
ISSN
09146385
NCID
AN10065859
Volume
25
Issue
4
Start Page
21
End Page
27
Sort Key
21
Published Date
2011
EDB ID
FullText File
language
jpn
departments
Science and Technology