書誌事項
- タイトル別名
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- Predominance of Left-coiling Globorotalia truncatulinoides (d'Orbigny) between 115,000 and 50,000 yrs BP: A Latest Foraminiferal Biostratigraphic Event in the Western North Pacific.
- 11.5万年前から5万年前にかけてのGloborotalia truncatulinoides(d′Orbigny)の左巻き個体の優勢な層準--北西太平洋域での最も新しい化石層位学的事件
- 11.5マンネンマエ カラ 5マンネンマエ ニ カケテ ノ Globorota
- A Latest Foraminiferal Biostratigraphic Event in the Western North Pacific
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説明
The planktic foraminiferal species Globorotalia truncatulinoides (d'Orbigny) with left-coiling tests is distributed in limited areas in the modern world oceans, compared to that with right-coiling tests. The left-coiling forms of this species rarely occur in Recent sediments throughout the North Pacific. However, these forms are found to have outnumbered the right-coiling forms between 115, 000 and 50, 000yrs BP, based on the oxygen isotope stratigraphy in three western North Pacific cores. The predominance of the left-coiling forms probably reflects unique characteristics of the Western North Pacific Central Water and its underlying North Pacific Intermediate Water during the time span of about 65, 000 years. We propose the lower and upper limits of this bioevent at respectively 115, 000 and 50, 000yrs BP to be used as the latest biostratigraphic markers in the western North Pacific.
収録刊行物
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- 第四紀研究
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第四紀研究 34 (1), 39-47, 1995
日本第四紀学会
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詳細情報 詳細情報について
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- CRID
- 1390001206496104192
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- NII論文ID
- 10002632448
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- NII書誌ID
- AN0034136X
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- ISSN
- 18818129
- 04182642
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- NDL書誌ID
- 3610504
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- 本文言語コード
- en
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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