| 东海陆架区更新世晚期沉积的化石藻类组合及其古生态环境分析 |
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| 引用本文： | 王开发,张玉兰,蒋辉,孙煜华.东海陆架区更新世晚期沉积的化石藻类组合及其古生态环境分析[J].生态学报,1984,4(3):224-230. |
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| 作者姓名： | 王开发 张玉兰 蒋辉 孙煜华 |
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| 作者单位： | 同济大学海洋地质系
(王开发，张玉兰，蒋辉)，国家海洋局第二海洋研究所(孙煜华) |
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| 摘 要： | 东海陆架区更新世晚期沉积为二层陆相层及一层海相层。下部陆相层含盘星藻-双星藻-鼓藻-环纹藻组合,共生的孢粉化石为Abies-Picea-Pinus Cyperaceae-Artemisia孢粉组合,反映当时气候冷湿、海面下降、东海陆架出露成为东海平原,平原上有众多的湖沼分布,其中生长着盘星藻、双星藻、鼓藻、环纹藻等淡水藻类。中部海相层含圆筛藻-硅鞭藻-刺球藻-旋沟藻组合,共生孢粉化石为Pinus-QuercusCupressaceae-Artemisia-Cyperaceae组合,反映气候暖湿、海面回升、发生海侵,东海复被海水淹没,海区生活着各种硅藻和硅鞭藻、刺球藻、旋沟藻。上部陆相层含盘星藻-双星藻-环纹藻-鼓藻组合,共生孢粉化石为Cupressaceae-Pinus-Abies-Gramineae-Artemisia组合,反映冷干气候,海面大幅度下降,东海陆架再度出露成为东海平原,古黄河、长江汇集穿越大陆架而汇入海槽。当时陆架平原景观类似于今日长江下游平原。 根据C~14龄测定与藻类、孢粉化石组合推断,下部陆相层相当晚更新世的武术Ⅰ期,中部海相层相当于武木亚间冰期,上部陆相层相当于武木Ⅱ期。
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ANALYSIS OF FOSSIL ALGAL ASSEMBLAGES FROM THELATE LATE PLEISTOCENE SEDIMENTS IN THECONTINENTAL SHELF OF THE DONG HAI ANDTHEIR PALEOECOLOGICAL ENVIRONMENT |
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| Wang Kaifa.ANALYSIS OF FOSSIL ALGAL ASSEMBLAGES FROM THELATE LATE PLEISTOCENE SEDIMENTS IN THECONTINENTAL SHELF OF THE DONG HAI ANDTHEIR PALEOECOLOGICAL ENVIRONMENT[J].Acta Ecologica Sinica,1984,4(3):224-230. |
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| Authors: | Wang Kaifa |
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| Institution: | Department of Marine Geology; Tongji University; Shanghai |
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| Abstract: | The late Late Pleistocene sediments in the continental shelf consist of two continental facies beds and a marine facies bed.The lower continental facies bedcontains Pediastrum-Zygnema-Desmidiaceae-Concentricystes algal assemblage and Abies-Picea-Pinus-Cyperaceae-Artemisia palynological assemblage, showing that the climate was cold and wet, sea level lowering, and the continental shelf of the Dong Hai exposed as the plain dotted with many lakes and swamps in which lived many fresh water algae of Pediastrum,Z... |
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