書誌事項
- タイトル別名
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- Tectonic implications of Early Eocene dinoflagellate cysts from the Mukai-engaru Formation of the Yubetsu Group, Tokoro Belt, eastern Hokkaido, Japan.
- ホッカイドウ トウブ トコロタイユウベツソウグン ムカイ エンガルソウ ノ ウ
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A diverse marine dinoflagellate cyst assemblage of an Early Eocene age was recovered from the Mukai-engaru Formation of the Yubetsu Group， Tokoro Belt， eastern Hokkaido， Japan， from which no fossil occurrence was previously recorded． The Early Eocene age is the youngest known age of the group and provides two geochronological constraints significant to the regional tectonic history. First, the age of the formation agrees well with the accretionary prism model proposed for the Yubetsu Group， since the age was determined in the probable youngest part of the whole group in the model. Second, the present age determination denotes that the eastward accretion-subduction to the Paleo-Kuril Arc or the Okhotsk Block was still active in the Early Eocene. The observed geochronological range of the Yubetsu Group is well paralleled by that of the Hidaka Supergroup in the Hidaka Belt to the west, which implies a temporal similarity between the two confronting convergent margins.
収録刊行物
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- 地質学雑誌
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地質学雑誌 104 (11), 808-811, 1998
一般社団法人 日本地質学会
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詳細情報 詳細情報について
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- CRID
- 1390282681212119168
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- NII論文ID
- 110003010358
- 10012469848
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- NII書誌ID
- AN00141768
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- ISSN
- 13499963
- 00167630
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- HANDLE
- 10191/17798
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- NDL書誌ID
- 4610134
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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
- IRDB
- NDL
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- CiNii Articles