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- 長谷川 四郎
- 北海道大学大学院地球環境科学研究科地球環境変遷学講座
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- 高田 裕行
- 北海道大学大学院地球環境科学研究科地球環境変遷学講座
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- 小笠原 憲四郎
- 筑波大学地球科学系
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- 久田 健一郎
- 筑波大学地球科学系
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- GLADENKOV Yuri B.
- Geological Institute, Russian Academy of Science
書誌事項
- タイトル別名
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- Geology and Geomorphology of the Sakhalin Island. Neogene Foraminiferal Biostratigraphy and Paleoenvironmental Succession in Sakhalin.
- サハリン ノ シンダイ3キユウコウチュウ カセキソウ ジョ ト コ カンキョウ ヘンセン
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Based on foraminiferal biostratigraphy of the Neogene sedimentary sequences of Shmidta Peninsula at the northern tip and the Makarov region in southeastern Sakhalin, Russian Far East, paleoenvironment and ages are discussed. In the Makarov region, the history of environmental changes is roughly delineated, as follows: warm non-marine environment in late Early Miocene, transgression around early Middle Miocene, abrupt deepening into bathyal depth in Middle Miocene, and regression during Late Miocene and Pliocene. This succession is quite similar to those in Hokkaido and the northern Honshu in Japan. In the Pil'vo section at the west coast of Shmidta Peninsula, the similar bathymetric changes are recognized at the same time as in the Makarov region, although this section is regarded as being in the bathyal depths throughout Early to Middle Miocene.<BR>The occurrences of some temperate-water species give evidence of the influence of warm-surface water during the Miocene period. Ammonia spp. survived in early Middle Miocene (the transition period between the MNCO and the following cooler stage in early Middle Miocene) in the Makarov region. A planktonic foraminifer, Globorotalia cf. miozea conoidea was found in the middle part of the Pili Formation (early Middle Miocene) of the Pil'vo section. This is the first discovery of keeled Globorotalia in Sakhalin, and is important for the consideration of the geohistory of the Northwest Pacific, in particular the first appearance of subarctic climate and cold Oyashio water.
収録刊行物
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- 地学雑誌
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地学雑誌 109 (2), 174-186, 2000
公益社団法人 東京地学協会
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詳細情報 詳細情報について
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- CRID
- 1390282679206424448
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- NII論文ID
- 10004672066
- 10004671993
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- NII書誌ID
- AN00322536
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- ISSN
- 18840884
- 0022135X
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- NDL書誌ID
- 5368575
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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
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可