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島根大学地球資源環境学研究報告 Volume 20
published_at 2001-12-28
弓ヶ浜砂州の地下地質
Late Quaternary sediments of the Yumigahama sandbar,Tottori Prefecture,Southwest Japan
Nakamura Tadashi
Shigematsu Shinji
Tokuoka Takao
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The subsurface geology of the Yumigahama sandbar has been reconstructed mainly on the basis of drilling data from 15 drillcores put down by the Ministry of Construction in 1995～1996．The sandbar is underlain by layers of Holocene sand，Holocene mud and Pleistocene sand，in descending order. Two volcanic ash layers，the SKP（Sanbe-Kisuki Pumice）and the DMP（Daisen-Matsue Pumice）are intercalated in upper part of the Pleistocene deposits，and the K-Ah volcanic ash layer（6,300 yr B.P.）is intercalated in the muddy Holocene deposits．
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