西菲律宾海表层沉积物稀土元素地球化学特征及物源指示意义
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摘要
西菲律宾海地质作用复杂,其表层沉积物稀土元素地球化学特征对其沉积物来源具有明显指示意义。基于西菲律宾海吕宋岛至九州帛琉洋脊之间海域表层沉积物样品的常量元素和稀土元素组成,通过对不同类型沉积区稀土元素组成、配分模式和稀土元素La/Yb和Sm/Eu比值进行研究发现,研究区沉积物中稀土元素组成受沉积物类型和物质来源控制,沉积物中黏土矿物、铁锰氧化物自生颗粒和磷灰石是稀土元素的主要富集相;吕宋岛与本哈姆高原之间海盆的沉积物含有来自吕宋岛蛇绿岩的物质,而中央裂谷以西海盆区和含结核黏土区沉积物主要由陆源风尘物质、海底火山物质和自生组分组成。
The composition of rare earth elements(REE)in sediments,which are effective in revealing the geochemical characters and sources of sediments,is used as a clue to understand the complex geological processes of the West Philippine Sea from the east Luzon Island to the Kyushu-Palau Ridge.Major and minor elements are analyzed.By comparing the concentrations of major and rare earth elements in addition to the REE distribution patterns in different parts of the studying area,we found that REE mainly occur with clay minerals,authigenic Fe-Mn oxide particles and apatite.The sediments in the basin between the Luzon Island and the Benham rise may contain some materials derived from ophiolites from the east of Luzon Island.The sediments in the basin to the west of the central rift and the area covered by nodules containing clays are comprised of the eolian dust from the continent,submarine volcanoes and authigenic materials.
The composition of rare earth elements(REE)in sediments,which are effective in revealing the geochemical characters and sources of sediments,is used as a clue to understand the complex geological processes of the West Philippine Sea from the east Luzon Island to the Kyushu-Palau Ridge.Major and minor elements are analyzed.By comparing the concentrations of major and rare earth elements in addition to the REE distribution patterns in different parts of the studying area,we found that REE mainly occur with clay minerals,authigenic Fe-Mn oxide particles and apatite.The sediments in the basin between the Luzon Island and the Benham rise may contain some materials derived from ophiolites from the east of Luzon Island.The sediments in the basin to the west of the central rift and the area covered by nodules containing clays are comprised of the eolian dust from the continent,submarine volcanoes and authigenic materials.
引文
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[24]Dean W E,Leinen M,Stow D A V.Classification of deepsea,fine-grained sediments[J].Journal of Sedimentary Petrology,1985,55(2):250-256.
[25]高晶晶,刘季花,乔淑卿,等.电感耦合等离子体-发射光谱法测定海洋沉积物中的常、微量元素[J].光谱实验室,2010,27(3):1050-1054.[GAO Jingjing,LIU Jihua,QIAOShuqing,et al.Determination of major and minor elements in oceanic sediments by ICP-OES[J].Chinese Journal of Spectroscopy Laboratory,2010,2010,27(3):1050-1054.]
[26]高晶晶,刘季花,张辉,等.高压密闭消解-电感耦合等离子体质谱法测定海洋沉积物中稀土元素[J].岩矿测试,2012,31(3):425-429.[GAO Jingjing,LIU Jihua1,ZHANG Hui,et al.Determination of rare earth elements in the marine sediments by inductively coupled plasma-mass spectrometry with high-pressure closed digestion[J].Rock and Mineral Analysis,2012,31(3):425-429.]
[27]Delaney M L.Phosphorus accumulation in marine sediments and the oceanic phosphorus cycle[J].Global Biogeochemical Cycles,1998,12(12):563-572.
[28]Dubinin A V.Geochemistry of rare earth elements in oceanic phillipsites[J].Lithology&Mineral Resources,2000,35(2):101-108.
[29]Dubinin A V.Geochemistry of Rare Earth Elements in the Ocean[J].Lithology&Mineral Resources,2004,39(4):289-307.
[30]Encarnación J.Multiple ophiolite generation preserved in the northern Philippines and the growth of an island arc complex[J].Tectonophysics,2004,392(s 1-4):103-130.
[31]Chen J,An Z,Liu L,et al.Variations in chemical compositions of the eolian dust in Chinese Loess Plateau over the past2.5 Ma and chemical weathering in the Asian inland[J].Science in China Series D:Earth Sciences,2001,44(5):403-413.
[32]Mukasa S B,Flower M F J,Miklius A.The Nd-,Sr-and Pb-isotopic character of lavas from Taal,Laguna de Bay and Arayat volcanoes,southwestern Luzon,Philippines:Implications for arc magma petrogenesis[J].Tectonophysics,1994,235(s 1-2):205-221.
[33]Flower M F J,Chung S L,Lo C H,et al.Geochemical Characteristics of Oceanic Island Basalts from the Philippine Sea Plate:Implications for the Sources of East Asian Plate Margin and IntraplateBasalts[M]//Mantle Dynamics and Plate Interactions in East Asia.American Geophysical Union,2013:365-384.
[34]Ishizuka O,Taylor R N,Yuasa M,et al.Making and breaking an Island arc:a new perspective from the Oligocene KyushuPalau arc[C]//AGU Fall Meeting Abstracts.AGU Fall Meeting Abstracts,2010.
[2]刘季花.东太平洋沉积物稀土元素和Nd同位素地球化学特征及其环境指示意义[D].中国科学院研究生院(海洋研究所),2004.[The Geochemistry of REEs and Nd Isotope in Deep-sea Sediments from the East Pacific and Their Geologic Implications[D].University of Chinese Academy of Sciences,2004.]
[3]李国胜,杨锐,张洪瑞.中太平洋PC5222孔岩心地球化学特征及物源探讨[J].沉积与特提斯地质,2007,27(2):26-36.[LI Guosheng,YANG Rui,ZHANG Hongrui.Geochemistry and provenance of the PC5222drill core from the mid Pacific Ocean[J].Sedimentary Geology and Tethyan Geology,2007,27(2):26-36.]
[4]杨锐,李国胜,张洪瑞.中太平洋CC区表层沉积物的地球化学[J].地质与资源,2007,16(3):200-208.[YANG Rui,LI Guosheng,ZHANG Hongrui.Analysis on the geochemical characteristics and material origin of the surface sediments in the mid-Pacific Ocean[J].Geology and Resources,2007,16(3):200-208.]
[5]XU Zhaokai,LI Anchun.Geochemical character and material source of sediments in the eastern Philippine Sea[J].Chinese science bulletin,2008,53(6):923-931.
[6]徐兆凯,李安春,李铁刚,等.东菲律宾海表层沉积物常量元素组成及地质意义[J].海洋地质与第四纪地质,2010,30(6):43-48.[XU Zhaokai,LI Anchun,LI Tiegang,et al.Major element compositions of surface sediments in the East Philippine Sea and its geological implication[J].Marine Geology and Quaternary Geology,2010,30(6):43-48.]
[7]朱克超,任江波,王海峰,等.太平洋中部富REY深海粘土的地球化学特征及REY富集机制[J].地球科学:中国地质大学学报,2015,40(6):1052-1060.[ZHU Kechao,REN Jiangbo,WANG Haifeng,et al.Enrichment mechanism of REY and geochemical characteristics of REY-rich pelagic clay from the Central Pacific[J].Earth Science-Journal of China University of Geosciences,2015,40(6):1052-1060.]
[8]石学法,陈丽蓉,李坤业,等.西菲律宾海沉积物矿物组合及其地质意义[J].海洋与湖沼,1994,25(3):328-335.[SHI Xuefa,CHEN Lirong,LI Kunye,et al.The mineral assemblages in the sediments in the West Philippine Sea and their geological implication[J].Oceanologia et Limnologia Sinica,1994,25(3):328-335.]
[9]石学法,陈丽蓉,李坤业,等.西菲律宾海西部海域粘土沉积物的成因矿物学研究[J].海洋地质与第四纪地质,1995,15(2):61-72.[SHI Xuefa,CHEN Lirong,LI Kunye,et al.Study on minerology of the clay sediment in the west of Philippine Sea[J].Marine Geology and Quaternary Geology,1995,15(2):61-72.]
[10]鄢全树,石学法,王昆山,等.西菲律宾海盆表层沉积物中的轻碎屑分区及物质来源[J].地质论评,2007,53(6):765-773.[YAN Quanshu,SHI Xuefa,WANG Kunshan,et al.Provinces and material provenance of light detritus in the surficial sediments from the Western Philippine Sea[J].Geological Review,2007,53(6):765-773.]
[11]徐兆凯,李安春,徐方建,等.东菲律宾海表层沉积物中元素的赋存状态[J].海洋地质与第四纪地质,2007,27(2):51-58.[XU Zhaokai,LI Anchun,XU Fangjian,et al.Elemental occurrence phases of surface sediments from the East Philippine Sea[J].Marine Geology and Quaternary Geology,2007,27(2):51-58.]
[12]葛淑兰,石学法,杨刚,等.西菲律宾海780ka以来气候变化的岩石磁学记录:基于地磁场相对强度指示的年龄框架[J].第四纪研究,2007,27(6):1040-1052.[GE Shulan,SHI Xuefa,YANG Gang,WU Yonghua.Rock magnetic response to climatic changes in West Philippine Sea for the last 780ka:based on relative paleointensity assisted chronology[J].Quaternary Sciences,2007,27(6):1040-1052.]
[13]孙晗杰.西菲律宾海2.36 Ma以来古海洋学研究[D].中国科学院研究生院(海洋研究所),2011.[SUN Hanjie.Research of the Paleoceanography of the Western Philippine Sea over the past 2.36 Ma[D].University of Chinese Academy of Sciences,2011.]
[14]Xu Z,Li T,Wan S,et al.Evolution of East Asian monsoon:Clay mineral evidence in the western Philippine Sea over the past 700kyr[J].Journal of Asian Earth Sciences,2012,60:188-196.
[15]周宇.近2 Ma帕里西—维拉海盆的风尘记录[D].中国科学院研究生院(海洋研究所),2014.[ZHOU Yu.Asian dust record in the Parece Vela Basin over the last 2Ma[D].The University of Chinese Academy of Sciences(Institute of Oceanology),2014.]
[16]李常珍,李乃胜,林美华.菲律宾海的地势特征[J].海洋科学,2000,24(06):47-51.[LI Changzhen,LI Naisheng,LIN Meihua,The topography of Philippine Sea[J].Marine Science,2000,24(06):47-51.]
[17]Deschamps A,Lallemand S.The West Philippine Basin:An Eocene to early Oligocene back arc basin opened between two opposed subduction zones[J].Journal of Geophysical Research:Solid Earth,2002,107(B12):EPM 1-1-EPM 1-24.
[18]Castillo P R,Newhall C G.Geochemical constraints on possible subduction components in lavas of Mayon and Taal volcanoes,southern Luzon,Philippines[J].Journal of Petrology,2004,45(6):1089-1108.
[19]McKee E H.K-Ar ages of deep-sea basalts,Benham Rise,West Philippine Basin,Leg 31,Deep Sea Drilling Project.[R]//Karig D E,Ingle J C,et al.Initial Reports of the DeepSea Drilling Project,Volume 31.Washington,D.C,U.S.Government Printing Office,1975:599-600.
[20]Hilde T W,Chao-Shing L.Origin and evolution of the West Philippine Basin:a new interpretation[J].Tectonophysics,1984,102(1):85-104.
[21]Qiu B.Kuroshio and Oyashio currents[C]//Encyclopedia of Ocean Sciences.Waltham,MA,USA:Academic Press,2001:1413-1425.
[22]张弦,俞慕耕,江伟,等.菲律宾海及其邻近海区的水文特征[J].海洋通报,2004,23(1):8-14.[ZHANG Xuan,YU Mugeng,JIANG Wei,et al.Hydrologic characteristic of the Philippine Sea and its nearby areas[J].Marine Science Bulletin,2004,23(1):8-14.]
[23]孙守勋,滕军.菲律宾海的气候特征[J].海洋预报,2003,20(3):31-39.[SUN Shouxun,TENG Jun.Climate character of the Philippine Sea[J].Marine Forecasts,2003,20(3):31-39.]
[24]Dean W E,Leinen M,Stow D A V.Classification of deepsea,fine-grained sediments[J].Journal of Sedimentary Petrology,1985,55(2):250-256.
[25]高晶晶,刘季花,乔淑卿,等.电感耦合等离子体-发射光谱法测定海洋沉积物中的常、微量元素[J].光谱实验室,2010,27(3):1050-1054.[GAO Jingjing,LIU Jihua,QIAOShuqing,et al.Determination of major and minor elements in oceanic sediments by ICP-OES[J].Chinese Journal of Spectroscopy Laboratory,2010,2010,27(3):1050-1054.]
[26]高晶晶,刘季花,张辉,等.高压密闭消解-电感耦合等离子体质谱法测定海洋沉积物中稀土元素[J].岩矿测试,2012,31(3):425-429.[GAO Jingjing,LIU Jihua1,ZHANG Hui,et al.Determination of rare earth elements in the marine sediments by inductively coupled plasma-mass spectrometry with high-pressure closed digestion[J].Rock and Mineral Analysis,2012,31(3):425-429.]
[27]Delaney M L.Phosphorus accumulation in marine sediments and the oceanic phosphorus cycle[J].Global Biogeochemical Cycles,1998,12(12):563-572.
[28]Dubinin A V.Geochemistry of rare earth elements in oceanic phillipsites[J].Lithology&Mineral Resources,2000,35(2):101-108.
[29]Dubinin A V.Geochemistry of Rare Earth Elements in the Ocean[J].Lithology&Mineral Resources,2004,39(4):289-307.
[30]Encarnación J.Multiple ophiolite generation preserved in the northern Philippines and the growth of an island arc complex[J].Tectonophysics,2004,392(s 1-4):103-130.
[31]Chen J,An Z,Liu L,et al.Variations in chemical compositions of the eolian dust in Chinese Loess Plateau over the past2.5 Ma and chemical weathering in the Asian inland[J].Science in China Series D:Earth Sciences,2001,44(5):403-413.
[32]Mukasa S B,Flower M F J,Miklius A.The Nd-,Sr-and Pb-isotopic character of lavas from Taal,Laguna de Bay and Arayat volcanoes,southwestern Luzon,Philippines:Implications for arc magma petrogenesis[J].Tectonophysics,1994,235(s 1-2):205-221.
[33]Flower M F J,Chung S L,Lo C H,et al.Geochemical Characteristics of Oceanic Island Basalts from the Philippine Sea Plate:Implications for the Sources of East Asian Plate Margin and IntraplateBasalts[M]//Mantle Dynamics and Plate Interactions in East Asia.American Geophysical Union,2013:365-384.
[34]Ishizuka O,Taylor R N,Yuasa M,et al.Making and breaking an Island arc:a new perspective from the Oligocene KyushuPalau arc[C]//AGU Fall Meeting Abstracts.AGU Fall Meeting Abstracts,2010.