| 厦门大嶝海域柱样沉积物中微体古生物特征及其地质意义 |
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| 引用本文： | 于永芬,陈承惠.厦门大嶝海域柱样沉积物中微体古生物特征及其地质意义[J].台湾海峡,1995,14(3):241-248. |
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| 作者姓名： | 于永芬 陈承惠 |
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| 作者单位： | 国家海洋局第三海洋研究所!厦门，361005，国家海洋局第三海洋研究所!厦门，361005，国家海洋局第三海洋研究所!厦门，361005，国家海洋局第三海洋研究所!厦门，361005 |
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| 摘 要： | 本文分析测定了福建厦门大嶝海域三个沉积物柱样中的了孢粉、硅藻、有孔虫和＾１４Ｃ年代，对其微体古生物组合特征，沉积环境和地层年代进行了初步的探讨。划分出两个孢粉带，即下部的栎属－蕨类带和上部的松属－蕨类－禾本科带，表明自下而上气候由热湿变为暖干。硅藻以柱状小环藻－具槽直链藻组合为代表，有孔虫组合则以毕克卷转虫占优势，表明为近岸浅水环境，但柱样上下有些差异。
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| 关 键 词： | 微体古生物 地层 沉积环境 大嶝海域 沉积物 |
Micropaleontologic characteristics and geologic significance of sediment cores from Dadeng sea area of Xiamen,Fujian |
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| Yu Yongfen, Chen Chenghui, Lan Dongzhao, and Zhang Weilin.Micropaleontologic characteristics and geologic significance of sediment cores from Dadeng sea area of Xiamen,Fujian[J].Journal of Oceanography In Taiwan Strait,1995,14(3):241-248. |
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| Authors: | Yu Yongfen Chen Chenghui Lan Dongzhao and Zhang Weilin |
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| Abstract: | Sporo-pollen, diatom, foraminifera and 14C dating of three sediment cores from the Dadeng sea area of Xiamen,Fujian Province,are analyzed and determined systematically,and the micropaleontological assemblage characteristics, sedimentary environment and stratigraphical chronology are discussed preliminarily. Two palynological zones,Quercus-fern spores (Pteris, Pteridium, Polypodiaceae) zone of the lower part and Pinus-Pteridium-Gramineae zone of the upper part,are subdivided showing climatic changes from hot and wet to warm and dry upwards. The diatom assemblage represented by Cyclotella stylorumMerosira sulcata and foraminifera assemblage dominated by Ammonia beccarii var. indicated a nearshore shallow water environment with some differences between the lower and upper parts of the cores. The results show that the core sediments studied were formed in the late stage of Middle Holocene for the lower part and in Late Holocene for the upper part. |
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| Keywords: | Micropaleontology stratigraphy sedimentary environment Fujian |
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