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Title :NOTES ON SOME CRETACEOUS FOSSILS FROM THE NAKAMINATO FORMATION, NAKAMINATO CITY, IBARAKI PREFECTURE, JAPAN. PART I.
Title alternative :茨城県那珂湊市に分布する那珂湊層産白堊紀化石について(第一報)
Authors :SAITO, toshio
Authors alternative :斎藤, 登志雄
Issue Date :Feb-1958
Abstract :Ammonites unexpectedly discovered established the Upper Cretaceous age of the deposits exposed along the coast of Nakaminato in the eastern central part of Ibaraki Prefecture. These marine Cretaceous deposits are classified into two formations, lower part, the Oarai formation, consisting mostly of conglomerate, and upper part, the Nakaminato formation, of alternated sandstone and sandy mudstone. Stratigraphically the two formations are conformable. Ammonites and an echinoid indicate the Upper Senonian age of the Nakaminato formation. Of particular interest is the close faunal affinities existing between the Nakaminato formation and the Minato shale of Awaji Island.
Type Local :紀要論文
Publisher :茨城大学文理学部
URI :http://hdl.handle.net/10109/5422
Citation :茨城大学文理学部紀要, 自然科学 no.8 p.83 -99
Appears in Collections:Bulletin of the Faculty of Arts and Sciences, Ibaraki University. Natural science

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