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タイトルヨミ
シンジチョウ サイ サン ノ チュウシンセイ カイ カセキ シマネケン サン ナンタイ ドウブツ カセキ ソノ4
日本語以外のタイトル
Miocene Molluscs from Sai, Shinji-cho, Shimane Prefecture : Molluscan Fossils from Various Localities in Shimane Prefecture, Part 4
ファイル
言語
英語
著者
高安 克已
内容記述(抄録等)
The Miocene deposits distributed in the San-in district of west Japan are called the Iwami and the Izumo Groups in ascending order. From oldest to youngest the Iwami Group is subdivided into the Hata, Kawai, Kuri and Omori Formations. The Izumo Group is also subdivided into three units, the Kimachi, Fujina and Matsue Formations in ascending order.
In this sequence, there are two horizons which contain abundant marine molluscan fossils. The lower horizon is in the Kawai and Kuri Formations and their correlatives, which yield molluscs of a warm sea type correlated with the Kadonosawa Fauna of late Early Miocene to early Middle Miocene of northeast Japan. The upper horizon is in the Fujina and Matsue Formations and their correlatives, which yield cool water molluscs and relics of warm current species, correlative with the Shiobara-type Fauna of Middle to Late Miocene of northeast Japan.
As volcanic rocks dominate the remaining formations, marine mollusca in other horizons are rare.
The fossil locality reported in this paper is situated stratigraphically between the Kuri and the Fujina Formations, thus providing information on the change of marine molluscan faunas in this district.
Before entering into the discussion, the writer wishes to thank Dr. Paul Morris of Sydny University for improving the English.
掲載誌名
島根大学理学部紀要
19
開始ページ
135
終了ページ
149
ISSN
03879925
発行日
1985-12-25
NCID
AN00108106
出版者
島根大学理学部
出版者別表記
The Faculty of Science, Shimane University
資料タイプ
紀要論文
部局
総合理工学部
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