南黄海3.50Ma以来海陆环境演变的元素地球化学记录
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摘要
通过对南黄海西部陆架CSDP-1孔晚上新世—第四纪地层中的地球化学元素S、Sr和Ba的测试,结合该钻孔已发表的岩性、磁性地层和微体古生物等资料,综合分析发现:CSDP-1孔元素S、Sr、Ba质量分数及比值Sr/Ba在不同沉积相中的分布变化特征与研究区海陆沉积环境的变化密切相关,体现了S和Sr/Ba值的亲海相特性。S元素的高值主要出现在海相沉积环境中,对应了本区3.50Ma以来的海侵事件,可以指示本钻孔海陆环境。Sr/Ba值在U2沉积单元(1.66～0.83 Ma)的高值与海侵无关,认为主要是物质来源改变导致的沉积矿物组成发生变化所控制,而在U1沉积单元(0.83 Ma以来)Sr/Ba值能指示海陆环境的变化,表明0.83Ma以来海侵成为Sr/Ba值的主控因素。
Through testing the geochemical elements S,Sr and Ba in the strata from the Late Pliocene to Quaternary in the Core CSDP-1in the west shelf of South Yellow Sea,combined with the published lithological,magnetic stratigraphic and paleontological data,the authors found that the distribution and variation characteristics of these elements S,Sr,Ba and their ratio Sr/Ba in different sedimentary facies are closely related to the sedimentary environment changes in the study area,which reflects the pro-marine feature of S and Sr/Ba ratio.The high value of S element mainly occurs in marine sedimentary environment,corresponding to the transgressions since 3.50 Ma in this area,which indicates the sea and land environment of the core site.The high value of Sr/Ba ratio in U2 sedimentary unit(1.66-0.83Ma)is not related to transgression,but is mainly controlled by the change of material source,which leads to the changes of the sedimentary mineral composition;while in the U1 sedimentary units(since 0.83Ma),the Sr/Ba ratio indicates the change of the sea-land environment,showing that transgression has become the main control factor of the Sr/Ba ratio since 0.83 Ma.
Through testing the geochemical elements S,Sr and Ba in the strata from the Late Pliocene to Quaternary in the Core CSDP-1in the west shelf of South Yellow Sea,combined with the published lithological,magnetic stratigraphic and paleontological data,the authors found that the distribution and variation characteristics of these elements S,Sr,Ba and their ratio Sr/Ba in different sedimentary facies are closely related to the sedimentary environment changes in the study area,which reflects the pro-marine feature of S and Sr/Ba ratio.The high value of S element mainly occurs in marine sedimentary environment,corresponding to the transgressions since 3.50 Ma in this area,which indicates the sea and land environment of the core site.The high value of Sr/Ba ratio in U2 sedimentary unit(1.66-0.83Ma)is not related to transgression,but is mainly controlled by the change of material source,which leads to the changes of the sedimentary mineral composition;while in the U1 sedimentary units(since 0.83Ma),the Sr/Ba ratio indicates the change of the sea-land environment,showing that transgression has become the main control factor of the Sr/Ba ratio since 0.83 Ma.
引文
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[15]蓝先洪,张志珣,王中波,等.东海陆架晚更新世以来沉积物常量元素的分布及其地质意义[J].吉林大学学报(地球科学版),2014,44(6):1883-1891.Lan Xianhong,Zhang Zhixun,Wang Zhongbo,et al.Content Distributions and Its Geilogical Implication of Major Elements in Sediments from the Continental Shelf of the East China Sea During the Late Pleistocene[J].Journal of Jilin University(Earth Science Edition),2014,44(6):1883-1891.
[16]蓝先洪,马道修,徐明广,等.珠江三角洲若干地球化学标志及指相意义[J].海洋地质与第四纪地质,1987,7(1):41-51.Lan Xianhong,Ma Daoxiu,Xu Mingguang,et al.Some Geochemical Indicators of the Pearl River Delta and Their Facies Significance[J].Marine Geology&Quaternary Geology,1987,7(1):41-51.
[17]刘英俊,曹励明,李兆麟,等.元素地球化学[M].北京:科学出版社,1984:1-548.Liu Yingjun,Cao Liming,Li Zhaolin,et al.Elemental Geochemistry[M].Beijing:Science Press,1984:1-548.
[18]王益友,郭文莹,张国栋.几种地球化学标志在金湖凹陷阜宁群沉积环境中的应用[J].同济大学学报,1979,7(2):51-60.Wang Yiyou, GuoWenying,ZhangGuodong.Application of Some Geochemical Indicators in Determining of Sedimentary Environment of the Funing Group,Jinhu Depression,Jiangsu Province[J].Journal of Tongji University,1979,7(2):51-60.
[19]岳军,Dong Yue,张宝华,等.渤海湾西岸几种地球化学的环境指标[J].地质学报,2011,85(7):1239-1250.Yue Jun,Dong Yue,Zhang Baohua,et al.Several Geochemical Indicators of the West Coast of Bohai Sea[J].Acta Geologica Sinica,2011,85(7):1239-1250.
[20]同济大学地质系.海陆相地层辨认标志[M].北京:科学出版社,1980:1-175Geology Department of Tongji University.The Distinguishing Symbol of Marine and Terrestrial Facies[M].Beijing:Science Press,1980:1-175.
[21]杨作升.黄河口毗邻海域细粒级沉积物特征及沉积物入海后的运移[J].山东海洋学院学报,1985,15(2):121-129.Yang Zuosheng.Characteristics of Fine-Grained Sediment of the Shelf Area Adjacent to the Mouth of the Huanghe River and Sediment Dispersion in That Region[J].Journal of Shandong College of Oceanology,1985,15(2):121-129.
[22] Chen Zhongyuan,Chen Zhenglou,Zhang Weigou.Quaternary Stratigraphy and Trace-Element Indices of the Yangtze Delta,Eastern China,with Special Reference to Marine Transgressions[J].Quaternary Research,1997,47(2):181-191.
[23]王爱华.不同形态锶钡比的沉积环境判别效果比较[J].沉积学报,1996,14(4):168-173.Wang Aihua.Discriminate Effect of Sedimentary Environment by the Sr/Ba Ratio of Different Forms[J].Acta Sedimentologica Sinica,1996,14(4):168-173.
[24] Yao Zhengquan,Shi Xuefa,Qiao Shuqing,et al.Persistent Effects of the Yellow River on the Chinese Marginal Seas Began at Least~880 ka Ago[J].Scientific Reports,2017,7(1):2827.
[2] Liu Jian,Saito Y,Kong Xianghuai,et al.Delta Development and Channel Incision During Marine Isotope Stages 3and 2in the Western South Yellow Sea[J].Marine Geology,2010,278(1/2/3/4):54-76.
[3]梅西,张训华,李日辉.南黄海北部晚第四纪底栖有孔虫群落分布特征及对古冷水团的指示[J].地质论评,2013,59(6):1024-1034.Mei Xi,Zhang Xunhua,Li Rihui.Distribution of Late Quaternary Benthic Foraminifera in South Yellow Sea and Its Implication of Paleo-Water Mass[J].Geological Review,2013,59(6):1024-1034.
[4]庄丽华,常凤鸣,李铁刚,等.南黄海EY02-2孔底栖有孔虫群落特征与全新世沉积速率[J].海洋地质与第四纪地质,2002,22(4):7-14.Zhuang Lihua,Chang Fengming,Li Tiegang,et al.Foraminiferal Faunas and Holocene Sedimentation Rates of Core EY02-2in the South Yellow Sea[J].Marine Geology and Quaternary Geology,2002,22(4):7-14.
[5] Liu Jianxing,Shi Xuefa,Liu Qingsong,et al.Magnetostratigraphy of a Greigite-Bearing Core from the South Yellow Sea:Implications for Remagnetization and Sedimentation[J].Journal of Geophysical Research Solid Earth,2015,119(10):7425-7441.
[6]杨子赓.Olduvai亚时以来南黄海沉积层序及古地理变迁[J].地质学报,1993,67(4):357-366.Yang Zigeng.The Sedimentary Sequence and Palaeogeographic Changes of the South Yellow Sea Since the Olduvai Subchron[J].Acta Geologia Sinica,1993,67(4):357-366.
[7] Liu Jianxing,Liu Qingsong,Zhang Xunhua,et al.Magnetostratigraphy of a Long Quaternary Sediment Core in the South Yellow Sea[J].Quaternary Science Reviews,2016,144:1-15.
[8] Liu Jian,Zhang Xunhua,Mei Xi,et al.The Sedimentary Succession of the Last~3.50 Myr in the Western South Yellow Sea:Paleoenvironmental and Tectonic Implications[J].Marine Geology,2018,399:47-65.
[9]汪品先.微体化石在海侵研究中的应用与错用[J].第四纪研究,1992,12(4):321-331.Wang Pinxian.The Use and Misuse of Microfossils in Marine Transgression Studies[J].Quaternary Sciences,1992,12(4):321-331.
[10]张虎才.元素表生地球化学特征及理论基础[M].兰州:兰州大学出版社,1997:1-456.Zhang Hucai.Geochemical Characteristics of Elements in Earth Surface and the Geochemical Principle[M].Lanzhou:Lanzhou University Press,1997:1-456.
[11]韦桃源,陈中原,魏子新,等.长江河口区第四纪沉积物中的地球化学元素分布特征及其古环境意义[J].第四纪研究,2006,26(3):397-405.Wei Taoyuan,Chen Zhongyuan,Wei Zixin,et al.The Distribution of Geochemical Trace Elements in the Quaternary Sediments of the Changjiang River Mouth and the Paleoen Environmental Implications[J].Quaternary Sciences,2006,26(3):397-405.
[12]严钦尚,张国栋,项立嵩,等.苏北金湖凹陷阜宁群的海侵和沉积环境[J].地质学报,1979,53(1):77-99.Yan Qinshang,Zhang Guodong,Xiang Lisong,et al.Transgression and the Sedimentary Environment in Funing Group,Jinhu Depression,Northern Jiangsu Province[J].Acta Geologica Sinica,1979,53(1):77-99.
[13]杨競红,王颖,张振克,等.苏北平原2.58 Ma以来的海陆环境演变历史:宝应钻孔沉积物的常量元素记录[J].第四纪研究,2006,26(3):340-352.Yang Jinghong,Wang Ying,Zhang Zhenke,et al.Major Element Record of Land Sea Interaction and Evolution in the Past 2.58 Ma from the Baoying Borehole Sediments,Northern Jiangsu Plain,China[J].Quaternary Sciences,2006,26(3):340-352.
[14]杨競红,王颖,张振克,等.宝应钻孔沉积物的微量元素地球化学特征及沉积环境探讨[J].第四纪研究,2007,27(5):735-749.Yang Jinghong,Wang Ying,Zhang Zhenke,et al.Geochemical Characteristics of Trace Elements in Baoying Borehole Sediments and Their Implications for Depositional Environments[J].Quaternary Sciences,2007,27(5):735-749.
[15]蓝先洪,张志珣,王中波,等.东海陆架晚更新世以来沉积物常量元素的分布及其地质意义[J].吉林大学学报(地球科学版),2014,44(6):1883-1891.Lan Xianhong,Zhang Zhixun,Wang Zhongbo,et al.Content Distributions and Its Geilogical Implication of Major Elements in Sediments from the Continental Shelf of the East China Sea During the Late Pleistocene[J].Journal of Jilin University(Earth Science Edition),2014,44(6):1883-1891.
[16]蓝先洪,马道修,徐明广,等.珠江三角洲若干地球化学标志及指相意义[J].海洋地质与第四纪地质,1987,7(1):41-51.Lan Xianhong,Ma Daoxiu,Xu Mingguang,et al.Some Geochemical Indicators of the Pearl River Delta and Their Facies Significance[J].Marine Geology&Quaternary Geology,1987,7(1):41-51.
[17]刘英俊,曹励明,李兆麟,等.元素地球化学[M].北京:科学出版社,1984:1-548.Liu Yingjun,Cao Liming,Li Zhaolin,et al.Elemental Geochemistry[M].Beijing:Science Press,1984:1-548.
[18]王益友,郭文莹,张国栋.几种地球化学标志在金湖凹陷阜宁群沉积环境中的应用[J].同济大学学报,1979,7(2):51-60.Wang Yiyou, GuoWenying,ZhangGuodong.Application of Some Geochemical Indicators in Determining of Sedimentary Environment of the Funing Group,Jinhu Depression,Jiangsu Province[J].Journal of Tongji University,1979,7(2):51-60.
[19]岳军,Dong Yue,张宝华,等.渤海湾西岸几种地球化学的环境指标[J].地质学报,2011,85(7):1239-1250.Yue Jun,Dong Yue,Zhang Baohua,et al.Several Geochemical Indicators of the West Coast of Bohai Sea[J].Acta Geologica Sinica,2011,85(7):1239-1250.
[20]同济大学地质系.海陆相地层辨认标志[M].北京:科学出版社,1980:1-175Geology Department of Tongji University.The Distinguishing Symbol of Marine and Terrestrial Facies[M].Beijing:Science Press,1980:1-175.
[21]杨作升.黄河口毗邻海域细粒级沉积物特征及沉积物入海后的运移[J].山东海洋学院学报,1985,15(2):121-129.Yang Zuosheng.Characteristics of Fine-Grained Sediment of the Shelf Area Adjacent to the Mouth of the Huanghe River and Sediment Dispersion in That Region[J].Journal of Shandong College of Oceanology,1985,15(2):121-129.
[22] Chen Zhongyuan,Chen Zhenglou,Zhang Weigou.Quaternary Stratigraphy and Trace-Element Indices of the Yangtze Delta,Eastern China,with Special Reference to Marine Transgressions[J].Quaternary Research,1997,47(2):181-191.
[23]王爱华.不同形态锶钡比的沉积环境判别效果比较[J].沉积学报,1996,14(4):168-173.Wang Aihua.Discriminate Effect of Sedimentary Environment by the Sr/Ba Ratio of Different Forms[J].Acta Sedimentologica Sinica,1996,14(4):168-173.
[24] Yao Zhengquan,Shi Xuefa,Qiao Shuqing,et al.Persistent Effects of the Yellow River on the Chinese Marginal Seas Began at Least~880 ka Ago[J].Scientific Reports,2017,7(1):2827.