書誌事項
- タイトル別名
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- Paleobathymetries of the Plio-Pleistocene Urago and Nojima Formations, Kazusa Group, Miura Peninsula, central Japan : Revision on the basis of molluscan fossils from new localities
- カズサソウグンウラキョウソウ ト ノトウソウ(ミウラ ハントウ ホクブ:センシン~コウシントウ)ノ シン カセキ サンチ カラ サンシュツ シタ カイカセキ ニ ヨル コ スイシン ノ サイケントウ
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説明
We reported molluscan fossils from two new localities of the Urago and the overlying Nojima Formations, the Upper Pliocene to Lower Pleistocene Kazusa Group, a forearc basin fill deposit, Miura Peninsula, central Japan. These molluscan fossils are characterized by deep-water species, such as Ginebis japonicus, Phanerolepida transenna, Profundinassa babylonica, Limopsis tajimae and Halicardia nipponensis. This is the first report of the occurrence of Halicardia nipponensis from the Kazusa Group of the Miura Peninsula. Some of these fossils occur sporadically in the bioturbated muddy sandstones, which suggests that they are autochthonous. We estimated paleobathymetries using the bathymetric ranges of extant species of the autochthonous molluscan fossils: the Urago and the Nojima Formations were deposited at the water depth of 400m to 600m and 400m to 500m, respectively. The bathymetric estimation of the Urago Formation is deeper than the previous estimation based on the benthic foraminiferal assemblage(30m to 200m), and indicates that there is no significant paleobathymetric difference between the Urago and the Nojima Formations.
収録刊行物
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- 化石
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化石 91 (0), 5-14, 2012
日本古生物学会
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詳細情報 詳細情報について
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- CRID
- 1390282679413797376
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- NII論文ID
- 110009436882
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- NII書誌ID
- AN00041606
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- ISSN
- 24242632
- 00229202
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- NDL書誌ID
- 023628658
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
