末次冰消期以来东海内陆架古环境演化

徐方建

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末次冰消期以来东海内陆架古环境演化

徐方建

文章导航 > 沉积学报 > 2009 > 27(1): 118-127

徐方建. 末次冰消期以来东海内陆架古环境演化[J]. 沉积学报, 2009, 27(1): 118-127.

引用本文:

徐方建. 末次冰消期以来东海内陆架古环境演化[J]. 沉积学报, 2009, 27(1): 118-127.

XU Fangjian. Paleoenvironmental Evolution in the Inner Shelf of the East China Sea Since the Last Deglaciation[J]. Acta Sedimentologica Sinica, 2009, 27(1): 118-127.

Citation:

XU Fangjian. Paleoenvironmental Evolution in the Inner Shelf of the East China Sea Since the Last Deglaciation[J]. Acta Sedimentologica Sinica, 2009, 27(1): 118-127.

徐方建. 末次冰消期以来东海内陆架古环境演化[J]. 沉积学报, 2009, 27(1): 118-127.

引用本文:

徐方建. 末次冰消期以来东海内陆架古环境演化[J]. 沉积学报, 2009, 27(1): 118-127.

XU Fangjian. Paleoenvironmental Evolution in the Inner Shelf of the East China Sea Since the Last Deglaciation[J]. Acta Sedimentologica Sinica, 2009, 27(1): 118-127.

Citation:

XU Fangjian. Paleoenvironmental Evolution in the Inner Shelf of the East China Sea Since the Last Deglaciation[J]. Acta Sedimentologica Sinica, 2009, 27(1): 118-127.

末次冰消期以来东海内陆架古环境演化

徐方建

中国科学院海洋研究所海洋地质与环境重点实验室山东青岛 266071

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Paleoenvironmental Evolution in the Inner Shelf of the East China Sea Since the Last Deglaciation

XU Fangjian

Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao Shandong 266071

摘要

摘要: 通过对位于浙—闽沿岸泥质带的EC2005孔岩性、粒度以及AMS14C年代分析，探讨了研究区自末次冰消期以来的古沉积环境演化，认为是湖水或海水深度、气候变化等综合影响的结果。岩芯底部60.20～41.00 m（17.3～13.1 ka BP）为湖泊三角洲沉积序列，可划分为前三角洲—三角洲前缘—三角洲平原三个沉积亚相，物质来源主要是湖盆流域物质的输入。随着海平面的逐渐上升，海水自13.1 ka BP开始侵入研究区，形成了41.00 m的海相沉积地层，可划分为前滨—近滨—浅海三个沉积亚相，与海平面变化曲线具有良好的对应。自12.3 ka BP开始，研究区受到沿岸流影响，长江物质开始影响研究区，7.3 ka BP以来主要是来自长江的悬浮体在沿岸流作用下输送沉积而形成，稳定的泥质沉积物开始形成。全球性重要气候事件如新仙女木事件、8.2 ka冷事件在东海内陆架沉积物中也得到了良好揭示。
- 古环境 /
- 末次冰消期 /
- 粒度 /
- 东海内陆架 /
- EC2005孔
Abstract: Based upon analysis of lithology, grainsize and AMS14C dating for Core EC2005, located in the mud area off the ZhejiangFujian coast in the inner shelf of the East China Sea, the paleoenvironmental evolution can be ascertained. The hydrodynamic conditions and sedimentary environment changed greatly which could have been an integrated result of the varieties of lacustrine water depth, sealevel and climatic changes. From the bottom 60.20 m to 41.00 m (17.3～13.1 ka BP), a lacustrine delta developed, which can be divided into three facies: prodelta, delta front and delta plain. The delta sediments are deduced to mainly from the local drainage area. The sea water arrived at the study area at 13.1 ka BP and a 41 m thick sediment formed from then on, which can be divided into three facies: foreshore, nearshore and shallow sea. The facies evolution was well corresponding to the sea level changes, the hydrodynamic conditions changed greatly also during this period. From 12.3 ka BP, the study area was influenced by ZhejiangFujian Coastal Current (ZFCC), and Yangtzederived materials had been transported southward from that time. Since 7.3 ka BP, the sedimentary environment is dominated by the ZFCC, and the homogeneous mud sedimentation began to form. The worldwide climatic events such as the Younger Dryas episode and the 8.2 ka event were well recorded in the core.
- paleoenvironment /
- Last Deglaciation /
- grainsize /
- inner shelf of the East China Sea /
- Core EC2005

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[2]	高远, CarrollAlan R., 王成善. 异整合面——古环境剧变的地层记录 . 沉积学报, 2021, 39(1): 46-57. doi: 10.14027/j.issn.1000-0550.2020.128
[3]	蒋庆平, 孔垂显, 李维锋, 邱子刚, 卢志远, 常天全, 刘凯, 陈栋梁, 李胜, 袁晓光. 陆相湖盆大型扇三角洲沉积特征与演化规律 . 沉积学报, 2020, 38(5): 923-932. doi: 10.14027/j.issn.1000-0550.2019.089
[4]	段知非, 李超, 毕磊, 何中发, 李芳亮, 杨守业. 崇明岛H12孔百年来长江入海沉积物来源变化及原因 . 沉积学报, 2020, 38(6): 1204-1214. doi: 10.14027/j.issn.1000-0550.2020.002
[5]	张耀续, 王利超, 谭秀成. 川北小南海剖面栖霞组岩石微相及沉积环境 . 沉积学报, 2020, 38(5): 1049-1060. doi: 10.14027/j.issn.1000-0550.2019.094
[6]	王爱华, 叶思源, 刘建坤, 丁喜桂, 李华玲, 许乃岑. 不同选择性提取方法锶钡比的海陆相沉积环境判别探讨 . 沉积学报, 2020, 38(6): 1226-1238. doi: 10.14027/j.issn.1000-0550.2019.118
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末次冰消期以来东海内陆架古环境演化

徐方建

中国科学院海洋研究所海洋地质与环境重点实验室山东青岛 266071

收稿日期: 1900-01-01
修回日期: 1900-01-01
刊出日期: 2009-02-10

关键词:

古环境 /

末次冰消期 /

粒度 /

东海内陆架 /

EC2005孔

摘要: 通过对位于浙—闽沿岸泥质带的EC2005孔岩性、粒度以及AMS14C年代分析，探讨了研究区自末次冰消期以来的古沉积环境演化，认为是湖水或海水深度、气候变化等综合影响的结果。岩芯底部60.20～41.00 m（17.3～13.1 ka BP）为湖泊三角洲沉积序列，可划分为前三角洲—三角洲前缘—三角洲平原三个沉积亚相，物质来源主要是湖盆流域物质的输入。随着海平面的逐渐上升，海水自13.1 ka BP开始侵入研究区，形成了41.00 m的海相沉积地层，可划分为前滨—近滨—浅海三个沉积亚相，与海平面变化曲线具有良好的对应。自12.3 ka BP开始，研究区受到沿岸流影响，长江物质开始影响研究区，7.3 ka BP以来主要是来自长江的悬浮体在沿岸流作用下输送沉积而形成，稳定的泥质沉积物开始形成。全球性重要气候事件如新仙女木事件、8.2 ka冷事件在东海内陆架沉积物中也得到了良好揭示。

English Abstract

Paleoenvironmental Evolution in the Inner Shelf of the East China Sea Since the Last Deglaciation

XU Fangjian

Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao Shandong 266071

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2009-02-10

Keywords:

Abstract: Based upon analysis of lithology, grainsize and AMS14C dating for Core EC2005, located in the mud area off the ZhejiangFujian coast in the inner shelf of the East China Sea, the paleoenvironmental evolution can be ascertained. The hydrodynamic conditions and sedimentary environment changed greatly which could have been an integrated result of the varieties of lacustrine water depth, sealevel and climatic changes. From the bottom 60.20 m to 41.00 m (17.3～13.1 ka BP), a lacustrine delta developed, which can be divided into three facies: prodelta, delta front and delta plain. The delta sediments are deduced to mainly from the local drainage area. The sea water arrived at the study area at 13.1 ka BP and a 41 m thick sediment formed from then on, which can be divided into three facies: foreshore, nearshore and shallow sea. The facies evolution was well corresponding to the sea level changes, the hydrodynamic conditions changed greatly also during this period. From 12.3 ka BP, the study area was influenced by ZhejiangFujian Coastal Current (ZFCC), and Yangtzederived materials had been transported southward from that time. Since 7.3 ka BP, the sedimentary environment is dominated by the ZFCC, and the homogeneous mud sedimentation began to form. The worldwide climatic events such as the Younger Dryas episode and the 8.2 ka event were well recorded in the core.

徐方建. 末次冰消期以来东海内陆架古环境演化[J]. 沉积学报, 2009, 27(1): 118-127.

引用本文:

徐方建. 末次冰消期以来东海内陆架古环境演化[J]. 沉积学报, 2009, 27(1): 118-127.

XU Fangjian. Paleoenvironmental Evolution in the Inner Shelf of the East China Sea Since the Last Deglaciation[J]. Acta Sedimentologica Sinica, 2009, 27(1): 118-127.

Citation:

XU Fangjian. Paleoenvironmental Evolution in the Inner Shelf of the East China Sea Since the Last Deglaciation[J]. Acta Sedimentologica Sinica, 2009, 27(1): 118-127.

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末次冰消期以来东海内陆架古环境演化

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Paleoenvironmental Evolution in the Inner Shelf of the East China Sea Since the Last Deglaciation

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末次冰消期以来东海内陆架古环境演化

中国科学院海洋研究所海洋地质与环境重点实验室山东青岛 266071

English Abstract

Paleoenvironmental Evolution in the Inner Shelf of the East China Sea Since the Last Deglaciation

Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao Shandong 266071

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Paleoenvironmental Evolution in the Inner Shelf of the East China Sea Since the Last Deglaciation

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末次冰消期以来东海内陆架古环境演化

中国科学院海洋研究所 海洋地质与环境重点实验室 山东青岛 266071

English Abstract

Paleoenvironmental Evolution in the Inner Shelf of the East China Sea Since the Last Deglaciation

Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao Shandong 266071

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中国科学院海洋研究所海洋地质与环境重点实验室山东青岛 266071