李百蝉;冯兰平;王倩;陶云;周炼;

• 1:中国地质大学(武汉)地质过程与矿产资源国家重点实验室

摘要(Abstract)：

非传统稳定锶同位素(δ~(88)/~(86)Sr)的研究近年来已取得了较大的进展,其主要研究内容集中在讨论稳定锶同位素在海洋地球化学中的应用,主要包括以下几个方面:稳定锶同位素(δ~(88)/~(86)Sr)在自然界主要储库中的组成、显生宙海水δ~(88)/~(86)Sr的变化规律和海洋中锶同位素系统平衡的评估。海水中的锶同位素组成在显生宙发生过较大的变化,通过对海洋锶同位素体系对各输入和输出通量组成动态变化的响应评估表明,现代海洋锶同位素体系处于不平衡状态,这一现象被归因于冰期后的风化顶峰尚未结束。联立放射性锶同位素87Sr/~(86)Sr和稳定同位素δ~(88)/~(86)Sr所建立的完整的锶同位素体系相较传统放射性锶同位素87Sr/~(86)Sr能够对海洋锶地球化学循环的动态过程进行更好的评估,在海洋地球化学相关领域具有广阔的应用前景。

关键词(KeyWords)： δ88/86Sr;同位素分馏;海洋地球化学循环

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41473007;41673013)

作者(Author): 李百蝉;冯兰平;王倩;陶云;周炼;

Email:

DOI: 10.19509/j.cnki.dzkq.2018.0412

参考文献(References)：

• [1]Faure G.Principles of isotope geology[M].New York:Jonhn Wiley and Sons,1986.
• [2]王增银,刘娟,王涛,等.锶元素地球化学在水文地质研究中的应用进展[J].地质科技情报,2003,22(4):91-95.
• [3]杨杰东.锶同位素方法在地层研究中的某些应用介绍[J].地质科技情报,1988,7(3):109-114.
• [4]胡作维,李摇云,李北康,等.显生宙以来海水锶同位素组成研究的回顾与进展[J].地球科学进展,2015,30(1):37-49.
• [5]李富山,韩贵琳.非传统稳定同位素锶(δ88/86Sr)的地球化学研究进展[J].地球与环境,2011,39(4):585-591.
• [6]Ohno T,Hirata T.Simultaneous determination of mass-dependent isotopic fractionation and radiogenic isotope variation of strontium in geochemical samples by multiple collector-ICPmass spectrometry[J].Analytical Sciences,2007,23:1275-1280.
• [7]Krabbenhoft A,Fietzke J,Eisenhauer A,et al.Determination of radiogenic and stable strontium isotope ratios(87 Sr/86 Sr;δ88/86Sr)by thermal ionization mass spectrometry applying an87Sr/84Sr double spike[J].Journal of Analytical Atomic Spectrometry,2009,24:1267-1271.
• [8]Fietzke J,Eisenhauer A.Determination of temperature-dependent stable strontium isotope(88 Sr/86 Sr)fractionation via bracketing standard MC-ICP-MS[J].Geochemistry Geophysics Geosystems,2006,7(8):1-6.
• [9]Shalev N,Segal I,Lazar B,et al.Precise determination ofδ88/86Sr in natural samples by double-spike MC-ICP-MS and its TIMS verification[J].Journal of Analytical Atomic Spectrometry,2013,28:940-944.
• [10]Neymark L A,Premo W R,Mel′Nikov N N,et al.Precise determination ofδ88Sr in rocks,minerals,and waters by doublespike TIMS:A powerful tool in the study of geological,hydrological and biological processes[J].Journal of Analytical Atomic Spectrometry,2014,29:65-75.
• [11]Charlier B L A,Parkinson I J,Burton K W,et al.Stable strontium isotopic heterogeneity in the solar system from doublespike data[J].Geochemical Perspectives Letters,2017,4:35-40.
• [12]Krabbenhoft A,Eisenhauer A,Bohm F,et al.Constraining the marine strontium budget with natural strontium isotope fractionations(87 Sr/86 Sr*,δ88/86 Sr)of carbonates,hydrothermal solutions and river waters[J].Geochimica et Cosmochimica Acta,2010,74:4097-4109.
• [13]Bohm F,Eisenhauer A,Tang J,et al.Strontium isotope fractionation of planktic foraminifera and inorganic calcite[J].Geochimica et Cosmochimica Acta,2012,93:300-314.
• [14]Vollstaedt H,Eisenhauer A,Wallmann K,et al.The Phanerozoicδ88/86Sr record of seawater:New constraints on past changes in oceanic carbonate fluxes[J].Geochimica et Cosmochimica Acta,2014,128:249-265.
• [15]Pearce C R,Parkinson I J,Gaillardet J,et al.Reassessing the stable(δ88/86Sr)and radiogenic(87 Sr/86 Sr)strontium isotopic composition of marine inputs[J].Geochimica et Cosmochimica Acta,2015,157:125-146.
• [16]Rüggeberg A,Fietzke J,Liebetrau V,et al.Stable strontium isotopes(δ88/86Sr)in cold-water corals:A new proxy for reconstruction of intermediate ocean water temperatures[J].Earth and Planetary Science Letters,2008,269:570-575.
• [17]Fruchter N,Eisenhauer A,Dietzel M,et al.88Sr/86Sr fractionation in inorganic aragonite and in corals[J].Geochimica et Cosmochimica Acta,2016,178:268-280.
• [18]Halicz L,Segal I,Fruchter N,et al.Strontium stable isotopes fractionate in the soil environments?[J].Earth and Planetary Science Letters,2008,272:406-411.
• [19]Wei G,Ma J,Liu Y,et al.Seasonal changes in the radiogenic and stable strontium isotopic composition of Xijiang River water:Implications for chemical weathering[J].Chemical Geology,2013,343:67-75.
• [20]Chao H,You C,Liu H,et al.Evidence for stable Sr isotope fractionation by silicate weathering in a small sedimentary watershed in southwestern Taiwan[J].Geochimica et Cosmochimica Acta,2015,165:324-341.
• [21]Liu H,You C,Zhou H,et al.Effect of calcite precipitation on stable strontium isotopic compositions:Insights from riverine and pool waters in a karst cave[J].Chemical Geology,2017,456:85-97.
• [22]Ma J,Wei G,Liu Y,et al.Precise measurement of stable(δ88/86Sr)and radiogenic(87Sr/86Sr)strontium isotope ratios in geological standard reference materials using MC-ICP-MS[J].Chinese Science Bulletin,2013,58(25):3111-3118.
• [23]Charlier B L A,Nowell G M,Parkinson I J,et al.High temperature strontium stable isotope behaviour in the early solar system and planetary bodies[J].Earth and Planetary Science Letters,2012,329/330:31-40.
• [24]Moynier F,Agranier A,Hezel D C,et al.Sr stable isotope composition of Earth,the Moon,Mars,Vesta and meteorites[J].Earth and Planetary Science Letters,2010,300:359-366.
• [25]Liu H,You C,Huang K,et al.Precise determination of triple Sr isotopes(δ87Sr andδ88 Sr)using MC-ICP-MS[J].Talanta,2012,88:338-344.
• [26]Andrews M G,Jacobson A D,Lehn G O,et al.Radiogenic and stable Sr isotope ratios(87Sr/86Sr,δ88/86Sr)as tracers of riverine cation sources and biogeochemical cycling in the Milford Sound region of Fiordland,New Zealand[J].Geochimica et Cosmochimica Acta,2016,173:284-303.
• [27]Stevenson E I,Hermoso M,Rickaby R E M,et al.Controls on stable strontium isotope fractionation in coccolithophores with implications for the marine Sr cycle[J].Geochimica et Cosmochimica Acta,2014,128:225-235.
• [28]Shalev N,Gavrieli I,Halicz L,et al.Enrichment of 88Sr in continental waters due to calcium carbonate precipitation[J].Earth and Planetary Science Letters,2017,459:381-393.
• [29]De-Souza G F,Reynolds B C,Kiczka M,et al.Evidence for mass-dependent isotopic fractionation of strontium in a glaciated granitic watershed[J].Geochimica et Cosmochimica Acta,2010,74:2596-2614.
• [30]Knudson K J,Williams H M,Buikstra J E,et al.Introducingδ88/86Sr analysis in archaeology:A demonstration of the utility of strontium isotope fractionation in paleodietary studies[J].Journal of Archaeological Science,2010,37:2352-2364.
• [31]Ohno T,Komiya T,Ueno Y,et al.Determination of 88Sr/86Sr mass-dependent isotopic fractionation and radiogenic isotope variation of 87Sr/86 Sr in the Neoproterozoic Doushantuo Formation[J].Gondwana Research,2008,14:126-133.
• [32]Chao H,You C,Liu H,et al.The origin and migration of mud volcano fluids in Taiwan:Evidence from hydrogen,oxygen,and strontium isotopic compositions[J].Geochimica et Cosmochimica Acta,2013,114:29-51.
• [33]AlKhatib M,Eisenhauer A.Calcium and strontium isotope fractionation during precipitation from aqueous solutions as afunction of temperature and reaetion rate:Ⅱ.Aragonite[J].Geochimica et Cosmochimica Acta,2017,209:320-342.
• [34]AlKhatib M,Eisenhauer A.Calcium and strontium isotope fractionation in aqueous solutions as a function of temperature and reaction rate:I.Calcite[J].Geochimica et Cosmochimica Acta,2017,209:296-319.
• [35]Veizer J,Ala D,Azmy K,et al.87Sr/86Sr,δ13C andδ18 O evolution of Phanerozoic seawater[J].Chemical Geology,1999,161:59-88.
• [36]Veizer J.Strontium isotopes in seawater through time[J].Annual Reviews Earth Planetary,1989,17:141-167.