渤海东北海域有孔虫埋葬群特点与沉积环境的关系

王飞飞; 赵全民; 丁旋; 刘健

doi:10.3724/SP.J.1140.2009.02009

渤海东北海域有孔虫埋葬群特点与沉积环境的关系

王飞飞^1,2,
赵全民³,
丁旋¹,
刘健^2,4

1 中国地质大学, 北京 100083;
2 国土资源部海洋油气资源与环境地质重点实验室, 青岛 266071;
3 国家海洋环境监测中心, 大连 116023;
4 青岛海洋地质研究所, 青岛 266071

基金项目:

"908"专项CJ02区块海底底质调查与研究

详细信息

作者简介:
王飞飞(1984-),男,硕士生,从事海洋地质微体古生物研究,E-mail:lovebanana12@eyou.com

中图分类号: P736.2
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出版历程
- 收稿日期: 2008-12-27
- 修回日期: 2009-01-12

CHARACTERISTICS OF THE FORAMINIFERAL TAPHOCOENOSE IN THE NORTHEAST BOHAI AND RELATIONSHIP TO THE SEDIMENTARY ENVIRONMENT

1 China University of Geosciences, Beijing 100083, China;
2 Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources, Qingdao 266071, China;
3 National Marine Environment Monitoring Centre, Dalian 116023, China;
4 Qingdao Institute of Marine Geology, Qingdao 266071, China

摘要

摘要: 对渤海东北海域211个表层样品中有孔虫的定量和定性分析,共得底栖有孔虫48属109种,浮游有孔虫匮乏。对底栖有孔虫中58个种运用Q型因子分析,经方差最大化旋转,获得3个主因子的方差累计贡献为98.62%。组合Ⅰ为毕克卷转虫变种-冷水面颊虫,代表低温低盐沿岸流分布的滨岸环境;组合Ⅱ为异常诺宁虫-伊格尔虫未定种,代表黏土粉砂沉积物分布的近岸浅海;组合Ⅲ为压扁卷转虫-覆盖面颊虫,代表30 m水深线以外的较深水环境。研究区有孔虫埋葬群分布主要受冬季低温低盐沿岸流、沉积物分布、潮流、沉积速率及CaCO₃含量等因素的控制。
- 有孔虫埋葬群 /
- 因子分析 /
- 沉积环境 /
- 渤海
Abstract: Based on the quantitative and qualitative analysis of 211 surface sediment samples in the northeast Bohai, 109 benthic foraminifera species which belong to 48 genera were recognized. Very few planktonic foraminifera were found in this studied area. Q-mode factor analysis was made for the 58 benthic foraminifera species, and 3 varimax factors with a cumulative contribution of 98.62% have been revealed as follows:AssemblageⅠ(Ammonia beccrii vars.-Buccella frigida), which represents a littoral environment with low-temperature and low-salinity alongshore currents; AssemblageⅡ(Nonion anomalinoidea-Eggerella sp.), which represents a nearshore shallow-sea environment with distributions of fine sand and clay; Assemblage Ⅲ (Ammonia compressiuscula-Buccella tunicate), which indicates shallow-sea environment of more than 30 m water depth. The distribution of foraminiferal taphocoenose in the study area is mainly controlled by such factors as alongshore currents typical of low temperature and low salinity in winter season, sediment types, tidal currents, sedimentation rates, and CaCO₃ contents.
- foraminiferal taphocoenose /
- factor analysis /
- sedimentary environment /
- Bohai Sea

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