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Title Transcription
シマネケン オキノシマチョウ ノ モシキチ ニオケル チュウシントウ ヒサミソウ ノ フクゴウ ビカセキ ソウジョ
Title Alternative (English)
Combined microbiostratigraphy of the Miocene Kumi Formation at the type locality in Okinoshima Town, Oki Dogo Island, Shimane Prefecture
File
language
jpn
Author
Ihara, Koichi
Watanabe, Mahito
Tanaka, Yuichiro
Description
We investigated the biostratigraphy of the Miocene Kumi Formation at the type locality on Oki Dogo Island, Shimane Prefecture, using planktonic foraminifera, calcareous nannofossils and diatoms. The Kumi Formation is divided into upper and lower parts. The upper part is mainly composed of alternating sandstones and mudstones with associated glauconite key marker beds, and has an exposed thickness of about 100 m. The lower part reaches 90 m in thickness and consists of diatomaceous siltstone. The lower part is correlated with planktonic foraminiferal Zone N.8, calcareous nannofossil Zone CN3-CN4 and diatom Zone NPD3A. The upper part contains an interval assigned to diatom Zone NPD5C. These zonal assignments are concordant with each other, based on the current geologic time scale. With respect to previous studies, two of the glauconite-rich layers in the upper part can be widely correlated in the circum-Japan Sea area.13;
Subject
biostratigraphy
diatom
planktonic foraminifera
calcareous nannofossils
Kumi Formation
Okinoshima Town
Shimane Prefecture
Journal Title
島根大学地球資源環境学研究報告
Volume
30
Start Page
47
End Page
56
ISSN
13439774
Published Date
2011-12-27
NCID
AA11455176
DOI(SelfDOI)
Publisher
島根大学総合理工学部地球資源環境学教室
NII Type
Departmental Bulletin Paper
Format
PDF
Text Version
出版社版
Gyoseki ID
e22366
OAI-PMH Set
Interdisciplinary Graduate School of Science and Engineering
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