| 摘要: |
| "科学的发生和发展一开始就是由生产决定的"。随着我国地质勘探事业的迅速发展，特别是我国东部平原和浅海地区石油及其他沉积矿藏的勘探开发，有孔虫的研究工作已成为岩相识别、地层对比、恢复古地理及古气候等所依据的重要手段之一，越来越为人们所重视。
1965年，我们承担了山东省打渔张灌溉区(以下简称"灌区")七个钻孔岩芯中的有孔虫分析任务。目的是根据有孔虫在灌区地层中的出现情况，识别其海相层，进而划分出海、陆相地层,以便为探讨灌区土地盐碱化的原因、更合理地利用水利资源、进一步改造灌区的盐碱化土地等，提供必要的参考资料。这一任务已于同年完成，并已将初步分析结果送交有关单位。
为了配合生产单位对我国华北地区第四纪地层进行研究，近来，我们在前一工作的基础上，又将灌区的有孔虫资料进一步分析整理，除对93种底栖有孔虫进行分类记述外，并试图以灌区地层中的有孔虫群与现今渤海沉积物中的有孔虫群进行粗略对比，以便根据有孔虫的区系特点和生态组合等，探讨灌区地层海相层的古沉积环境。
由于在划分灌区地层的海相层和探讨海相层的古沉积环境时，我们仅是以现有有孔虫方面的资料为依据，因此，所讨论的问题必定存在较大的局限性和片面性。 |
| 关键词: 有孔虫 沉积环境 |
| DOI： |
| 分类号: |
| 基金项目:中国科学院海洋研究所调查研究报告第396号. |
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| The Quaternary Foraminifera of the Dayuzhang Irrigation Area, Shandong Province, and a Preliminary Attempt at an Interpretation of its Depositional Environment |
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Zheng Shouyi, Cheng Tsi-chung, Wang Xitang, Fu Zhaoxian
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Institute of Oceanology, Academia Sinica
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| Abstract: |
| About 400 subsamp1es from seven cores collected from a samp1ing profi1e located west of the coast of Laizhouwan，Bohai were qualitative1y and quantitative1y analyzed for their foraminifera1 contents with the aim of determining the distribution of marine and continental facies and of finding fauna1 evidence of marine transgressiveregressive sequences requisite to an understanding of the depositiona1 environment of the area,
A tota1 of 93 benthonic foraminiferal species belonging to 14 families and 36 genera is identified. Two genera and fifteen species are new.
A comparison of these species with the Recent foraminiferal fauna of Bohai shows that although there is a marked difference in species composition (only 51 species are in common with those of Bohai) , there is a marked similarity in faunal characteristies，with the majority of the species belonging to the temperate fauna. However, there a1so occur a few warm water species such as Elphidium simplex Cushman, Pseudorotalia schroeteriana(Parker and Jones) ， Asterorotalia pulchella (d 'Orbigny),etc.，which are non-existent in the Recent fauna of Bohai. The occurrence of these warm water species provides a basis for interpretating the paleotemperature of the sea water as being slightly warmer than that of the present day Bohai. |
| Key words: Depositional Environment Foraminifera |
