Coccolith Records and Their Meanings for the Mid-Brunhes Interval in the Southern South China Sea
详细信息
- 责任者：Yu Wenye (State Key Laboratory of Marine Geology ; Tongji University ; Shanghai 200092 ; China) ; Liu Chuanlian
- 刊名：Marine Geology & Quaternary Geology
- 出版年：2011
- 卷期：31(6)
- 关键词：颗石藻类 ; coccolithophorides ; 晚第四纪 ; Late Quaternary ; 南海 ; South China Sea
- 页码：p.85-90
- 图表：3 illus., 19 refs.
- 分类号：1400
- issnNo：ISSN0256-1492
- isbnNo：CN37-1117/P
摘要
Coccolith species and percentage analysis for the past 750 ka from ODP Site 1143 of the southern South China Sea has been carried out. The results show that in the mid-Brunhes interval (480～260 ka), the percentage of Florisphaera profunda declined as Gephyrocapsa caribbeanica was booming. Meanwhile, the structure of the sea water has changed, the nutricline depth decreased, and the primary productivity increased. Studies show that during the mid-Brunhes interval, the eccentricity was in a low levels. As the low eccentricity favours the cocoolith growth, it can be detected that the great change in coccolith community is mainly influenced by the eccentricity.
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