著者

二宮 祟 市原 季彦 谷口 翔 下山 正一 宮田 雄一郎 ダニエル ダンクレイ 松田 博貴 山中 寿朗 青木 隆弘 西田 民雄

出版者

一般社団法人 日本地質学会

雑誌

日本地質学会学術大会講演要旨 (ISSN:13483935)

巻号頁・発行日

vol.2009, pp.132, 2009

著者

二宮 崇 市原 季彦 谷口 翔 下山 正一 宮田 雄一? ダンクレイ ダニエル 松田 博貴 山中 寿朗 青木 隆弘 西田 民雄

出版者

一般社団法人 日本地質学会

雑誌

日本地質学会学術大会講演要旨 (ISSN:13483935)

巻号頁・発行日

vol.2010, pp.131, 2010

著者

松本 達郎 西田 民雄

出版者

日本古生物学会

雑誌

化石 (ISSN:00229202)

巻号頁・発行日

vol.68, pp.1-12, 2000

参考文献数

35

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In connection with the global standard of the Albian-Cenomanian boundary which was proposed at Brussels in 1995 and has been under discussion, we are working on the biostratigraphy of the late Albianearly Cenomanian succession in selected areas of Hokkaido. In this paper a result of our study in the Shuparo Valley of central Hokkaido is presented. Although the clastic sedimentaries in the area are not necessarily prolific, some worldwide ammonoid species have been obtained at several horizons (see Figure 1), which are tentatively correlated with the subzones in West Europe (Table 1). The stage boundary can, thus, be placed approximately between the Members IIb 2 and IIc in this area. There is, however, a considerable difference in the faunules of successive subzones between Japan and West Europe. In comparison with the ammonite biostratigraphy, some comments are given on the previous results of the foraminiferal biostratigraphy in this area. There are layers of tuff at several levels in the succession of Hokkaido, which would be useful to supplement the biostratigraphic correlation.

著者

松本 達郎 西田 民雄

出版者

日本古生物学会

雑誌

化石 (ISSN:00229202)

巻号頁・発行日

vol.68, pp.1-12, 2000-09-20 (Released:2017-10-03)

参考文献数

35

被引用文献数

1

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In connection with the global standard of the Albian-Cenomanian boundary which was proposed at Brussels in 1995 and has been under discussion, we are working on the biostratigraphy of the late Albianearly Cenomanian succession in selected areas of Hokkaido. In this paper a result of our study in the Shuparo Valley of central Hokkaido is presented. Although the clastic sedimentaries in the area are not necessarily prolific, some worldwide ammonoid species have been obtained at several horizons (see Figure 1), which are tentatively correlated with the subzones in West Europe (Table 1). The stage boundary can, thus, be placed approximately between the Members IIb 2 and IIc in this area. There is, however, a considerable difference in the faunules of successive subzones between Japan and West Europe. In comparison with the ammonite biostratigraphy, some comments are given on the previous results of the foraminiferal biostratigraphy in this area. There are layers of tuff at several levels in the succession of Hokkaido, which would be useful to supplement the biostratigraphic correlation.