南海北部近6 Ma以来中层水体演化的底栖有孔虫证据

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南海北部近6 Ma以来中层水体演化的底栖有孔虫证据

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中图分类号: P736.21

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Evolution of Intermediate Water in the Northern South China Sea During the Last 6 Million Years: Evidence from Benthic Foraminifera

摘要

摘要: 本文对南海北部陆坡SH7B孔底栖有孔虫群落结构组成及壳体氧碳同位素值变化特征进行研究，旨在了解该区晚中新世以来的中层水体演化历史。利用因子和聚类分析对该钻孔128个样品中的35个底栖有孔虫优势属种的相对百分含量数据进行统计分析，识别出4个组合：Globocassidulina subglobosa-Stilostomella spp.（Gs-St），Chilostomella mediterranensis-Globobulimina spp. (Cm-Gl)，Hoglundina elegans-Pyrgo spp. (He-Py)，Melonis affinis-Pyrgo spp. (Ma-Py)。晚中新世晚期至上新世早期（5.8~2.8 Ma）相对高海平面温暖期，SH7B孔底栖有孔虫为相对稳定的Gs-St组合，反映了低到中等营养物质供给的低氧水体环境。其中5.8~3.79 Ma底栖有孔虫壳体碳同位素偏负和强烈的碳酸盐溶解现象在全球其他海区均有发现，指示当时南海北部陆坡底层水体低氧环境可能受到因全球大洋环流格局变化影响的太平洋偏腐蚀性的缺氧中层水体影响。3.79~2.8 Ma底栖有孔虫丰度和喜氧类表生种含量逐渐增加，指示水体流通性趋于增强，水体氧含量稍有增加。晚上新世2.4 Ma以来，底栖有孔虫组合与氧碳同位素值波动变化频繁，反映了中等到高表层输出生产力的富氧到缺氧中层水体环境，南海北部陆坡底栖有孔虫的分布主要受陆源有机质输入量的多寡和南海中深层水体的循环状况共同控制。
- 底栖有孔虫 /
- 群落组成 /
- 南海 /
- 晚中新世 /
- 中层水体
Abstract: In order to investigate the evolution of intermediate water in Shenhu area on the northern slope of the South China Sea (SCS) from Late Miocene, benthic foraminiferal assemblage composition and stable oxygen and carbon isotope values from core SH7B were studied. Factor and cluster statistical analysis were used to perform based on the quantitative census data of benthic foraminiferal fauna with 35 dominance genus or species in 128 samples. Four assemblages were recognized including assemblage of Globocassidulina subglobosa-Stilostomella spp.(Gs-St), Chilostomella mediterranensis-Globobulimina spp.(Cm-Gl), Hoglundina elegans-Pyrgo spp. (He-Py) and Melonis affinis-Pyrgo spp. (Ma-Py). During the warm period and higher eustatic sea level stage from Late Miocene to early Pliocene (5.8~2.8 Ma), benthic foraminiferal assemblage (Gs-St) is stable and relative medium-low nutrient environment and low oxygenated situation in this region. Caused by the current status of global ocean, the relative negative excursion of δ¹³C values and marked dissolution of carbonate in Core SH7B were also recognized in other marine regions from 5.8~3.79 Ma, which indicate that the low oxygenated situation of intermediate water in the northern slope of the SCS may be controlled by the presence of oxygen-depleted and corrosive pacific intermediate water. From the Early Pliocene 3.79 to 2.8 Ma, the increasing of benthic foraminiferal abundance and aerobic epifaunal species suggests the intensification of the intermediate water circulation and the increasing of oxygen content. Since Late Pliocene 2.4Ma, fluctuating changes of benthic foraminiferal assemblages and stable isotope values indicate medium-high seasonality of surface water productivity and well-oxygenation to oxygen-depleted bottom-water situation. The benthic foraminiferal distribution is mainly controlled by the organic matter flux to the seafloor and the circulation of intermediate water.
- benthic foraminifera /
- assemblage composition /
- South China Sea /
- Late Miocene /
- intermediate water

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[1]	刘昆, 程鹏, 宋鹏, 任科英, 李虎, 刘博通. 南海北部古海流对琼东南盆地中新世储层发育的影响 . 沉积学报, 2023, 41(4): 1181-1191. doi: 10.14027/j.issn.1000-0550.2022.056
[2]	贺华瑞, 栾锡武, 龚梁轩, 叶传红, 闫恒. 南昆嵩凹陷中新世以来三角洲地震响应与沉积充填演化 . 沉积学报, 2023, 41(5): 1568-1582. doi: 10.14027/j.issn.1000-0550.2022.024
[3]	郭沫贞, 吕福亮, 侯福斗, 李林, 杨涛涛, 李东. 东爪哇盆地抱球虫灰岩浮游有孔虫组成及指相意义 . 沉积学报, 2020, 38(4): 747-758. doi: 10.14027/j.issn.1000-0550.2019.070
[4]	高胜美, 卓海腾, 王英民, 王星星, 贾凯育, 周伟. 南海北部白云峡谷群富有孔虫砂层沉积特征及发育机制 . 沉积学报, 2019, 37(4): 798-811. doi: 10.14027/j.issn.1000-0550.2018.187
[5]	王竣雅, 邬黛黛, 陈雪刚. 南海神狐海域Site 4B沉积物地球化学特征及其对甲烷渗漏的指示意义 . 沉积学报, 2019, 37(3): 648-660. doi: 10.14027/j.issn.1000-0550.2018.144
[6]	马本俊, 秦志亮, 吴时国, 高微, 高金尉, 王吉亮, 孙金, 陈传绪. 深水斜坡类型与沉积过程及其产物研究进展 . 沉积学报, 2018, 36(6): 1075-1090. doi: 10.14027/j.issn.1000-0550.2018.089
[7]	史春潇, 雷怀彦, 赵晶, 张劼, 韩超. 南海北部九龙甲烷礁邻区沉积物层中垂向细菌群落结构特征研究 . 沉积学报, 2014, 32(6): 1072-1082.
[8]	. 南海晚中新世—上新世红河沉积体系研究 . 沉积学报, 2013, 31(1): 32-37.
[9]	. 南海北部白云凹陷早中新世东部沉积体系研究 . 沉积学报, 2012, 30(3): 461-468.
[10]	. 南海表层沉积物与沉降颗粒物中有机碳的δ13C对比研究及其古环境再造意义 . 沉积学报, 2012, 30(2): 340-345.
[11]	徐强. 南海白云凹陷深水区渐新世—中新世断阶陆架坡折沉积过程响应 . 沉积学报, 2010, 28(5): 906-916.
[12]	徐方建. 近4400年来南海北部陆架沉积地球化学记录及其地质意义 . 沉积学报, 2010, 28(6): 1198-1205.
[13]	邵磊. 珠江口盆地的沉积充填与珠江的形成演变 . 沉积学报, 2008, 26(2): 179-158.
[14]	王海荣. 南海东北部台湾浅滩陆坡的浊流沉积物波的发育及其成因的构造控制 . 沉积学报, 2008, 26(1): 39-45.
[15]	唐松, 邵磊, 赵泉鸿. 南海渐新世以来粘土矿物的演变特征及意义 . 沉积学报, 2004, 22(2): 337-342.
[16]	何卫红, 汪啸风, 卜建军. 晚奥陶世五峰期扬子海盆海平面变化旋回与古水体深度 . 沉积学报, 2002, 20(3): 367-375.
[17]	章伟艳, 张富元, 陈荣华, 张霄宇. 南海深水区晚更新世以来沉积速率、沉积通量与物质组成 . 沉积学报, 2002, 20(4): 668-674.
[18]	陈建芳, 郑连福, 陈荣华, 郑玉龙, 陈文斌, M.G.Wiesner, H.K.Wong. 南海颗粒物质的通量、组成及其与沉积物积累率的关系初探 . 沉积学报, 1998, 16(3): 14-19.
[19]	李粹中. 南海深海短柱样的磁性地层学特征 . 沉积学报, 1994, 12(3): 136-142.
[20]	李粹中. 南海深水碳酸盐沉积作用 . 沉积学报, 1989, 7(2): 35-43.

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南海北部近6 Ma以来中层水体演化的底栖有孔虫证据

收稿日期: 2013-03-28

修回日期: 2013-09-09

刊出日期: 2014-06-10

中图分类号: P736.21

关键词:

南海 /

摘要: 本文对南海北部陆坡SH7B孔底栖有孔虫群落结构组成及壳体氧碳同位素值变化特征进行研究，旨在了解该区晚中新世以来的中层水体演化历史。利用因子和聚类分析对该钻孔128个样品中的35个底栖有孔虫优势属种的相对百分含量数据进行统计分析，识别出4个组合：Globocassidulina subglobosa-Stilostomella spp.（Gs-St），Chilostomella mediterranensis-Globobulimina spp. (Cm-Gl)，Hoglundina elegans-Pyrgo spp. (He-Py)，Melonis affinis-Pyrgo spp. (Ma-Py)。晚中新世晚期至上新世早期（5.8~2.8 Ma）相对高海平面温暖期，SH7B孔底栖有孔虫为相对稳定的Gs-St组合，反映了低到中等营养物质供给的低氧水体环境。其中5.8~3.79 Ma底栖有孔虫壳体碳同位素偏负和强烈的碳酸盐溶解现象在全球其他海区均有发现，指示当时南海北部陆坡底层水体低氧环境可能受到因全球大洋环流格局变化影响的太平洋偏腐蚀性的缺氧中层水体影响。3.79~2.8 Ma底栖有孔虫丰度和喜氧类表生种含量逐渐增加，指示水体流通性趋于增强，水体氧含量稍有增加。晚上新世2.4 Ma以来，底栖有孔虫组合与氧碳同位素值波动变化频繁，反映了中等到高表层输出生产力的富氧到缺氧中层水体环境，南海北部陆坡底栖有孔虫的分布主要受陆源有机质输入量的多寡和南海中深层水体的循环状况共同控制。

Evolution of Intermediate Water in the Northern South China Sea During the Last 6 Million Years: Evidence from Benthic Foraminifera

Received Date: 2013-03-28

Rev Recd Date: 2013-09-09

Publish Date: 2014-06-10

Keywords:

Abstract: In order to investigate the evolution of intermediate water in Shenhu area on the northern slope of the South China Sea (SCS) from Late Miocene, benthic foraminiferal assemblage composition and stable oxygen and carbon isotope values from core SH7B were studied. Factor and cluster statistical analysis were used to perform based on the quantitative census data of benthic foraminiferal fauna with 35 dominance genus or species in 128 samples. Four assemblages were recognized including assemblage of Globocassidulina subglobosa-Stilostomella spp.(Gs-St), Chilostomella mediterranensis-Globobulimina spp.(Cm-Gl), Hoglundina elegans-Pyrgo spp. (He-Py) and Melonis affinis-Pyrgo spp. (Ma-Py). During the warm period and higher eustatic sea level stage from Late Miocene to early Pliocene (5.8~2.8 Ma), benthic foraminiferal assemblage (Gs-St) is stable and relative medium-low nutrient environment and low oxygenated situation in this region. Caused by the current status of global ocean, the relative negative excursion of δ¹³C values and marked dissolution of carbonate in Core SH7B were also recognized in other marine regions from 5.8~3.79 Ma, which indicate that the low oxygenated situation of intermediate water in the northern slope of the SCS may be controlled by the presence of oxygen-depleted and corrosive pacific intermediate water. From the Early Pliocene 3.79 to 2.8 Ma, the increasing of benthic foraminiferal abundance and aerobic epifaunal species suggests the intensification of the intermediate water circulation and the increasing of oxygen content. Since Late Pliocene 2.4Ma, fluctuating changes of benthic foraminiferal assemblages and stable isotope values indicate medium-high seasonality of surface water productivity and well-oxygenation to oxygen-depleted bottom-water situation. The benthic foraminiferal distribution is mainly controlled by the organic matter flux to the seafloor and the circulation of intermediate water.

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南海北部近6 Ma以来中层水体演化的底栖有孔虫证据

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Evolution of Intermediate Water in the Northern South China Sea During the Last 6 Million Years: Evidence from Benthic Foraminifera

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南海北部近6 Ma以来中层水体演化的底栖有孔虫证据

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Evolution of Intermediate Water in the Northern South China Sea During the Last 6 Million Years: Evidence from Benthic Foraminifera

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南海北部近6 Ma以来中层水体演化的底栖有孔虫证据

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Evolution of Intermediate Water in the Northern South China Sea During the Last 6 Million Years: Evidence from Benthic Foraminifera

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出版历程

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南海北部近6 Ma以来中层水体演化的底栖有孔虫证据

English Abstract

Evolution of Intermediate Water in the Northern South China Sea During the Last 6 Million Years: Evidence from Benthic Foraminifera

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目录

友情链接

期刊在线

联系我们