CCSD主孔榴辉岩中金红石微量元素特征：LA-ICPMS分析及其意义

陈振宇; 曾令森; 李晓峰; 余金杰; 徐珏

CCSD主孔榴辉岩中金红石微量元素特征：LA-ICPMS分析及其意义

- 1.
  北京大学地球与空间科学学院，北京 100871；国土资源部成矿作用与资源评价重点实验室，中国地质科学院矿产资源研究所，北京100037
- 2.
  中国地质科学院地质研究所大陆动力学重点实验室，北京 100037
- 3.
  国土资源部成矿作用与资源评价重点实验室，中国地质科学院矿产资源研究所，北京100037
基金项目:
国家自然科学基金项目（40603009）和国家重点基础研究发展规划项目（2003CB716507, 2009CB825006）

收稿日期: 2009-02-06

修回日期: 2009-05-10

刊出日期: 2009-07-31

Trace elements of rutile in eclogites from CCSD main-hole：A LA-ICPMS study and its implication

- 1.
  School of Earth and Space Sciences, Peking University, Beijing 100871, China;MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China
- 2.
  Key Laboratory of Continental Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China
- 3.
  MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China

Received Date: 06 February 2009

Revised Date: 10 May 2009

Publish Date: 31 July 2009

摘要

摘要: 对中国大陆科学钻探（CCSD）主孔200~1005m范围内8件榴辉岩样品的金红石进行了LA-ICPMS原位微区微量元素分析，结合前人已发表的全岩和金红石分析数据，研究结果发现：在不同类型榴辉岩中，金红石的微量元素与其全岩成分具有不同的相关关系。金红石中的Nb和Ta元素含量不同程度地受控于全岩Nb和Ta含量。在高钛和低镁钛榴辉岩中，金红石的Cr与全岩Cr/TiO2正相关；在富镁榴辉岩中，金红石的Cr含量受全岩MgO含量的控制；在高钛和富镁榴辉岩中，全岩成分明显影响着金红石的Zr含量，金红石Zr温度计可能不适用。低镁钛榴辉岩的金红石的平衡温度普遍低于榴辉岩峰期变质温度，可能是变质流体参与下的扩散作用和退变质作用所致；多数情况下，单个样品中大部分金红石颗粒的Zr含量是均匀的，金红石Zr温度计所给出的温度可能代表着退变质再平衡的温度；CCSD榴辉岩的全岩Nb/Ta比值普遍低于其中金红石的Nb/Ta比值，不支持金红石榴辉岩可能是地球上超球粒陨石Nb/Ta比值储库的观点。
- CCSD主孔 /
- 榴辉岩 /
- 金红石 /
- LA-ICPMS /
- 微量元素 /
- 温度计 /
- Nb/Ta比值
Abstract: Trace elements of rutiles in eight eclogites from 200~1005m of CCSD main-hole were analyzed in-situ by LA-ICPMS. Combined our data with data of eclogites and rutiles from the literature, it is found that trace elements in rutiles from various types of eclogites have different correlations with the whole-rock chemistry. Nb and Ta contents in rutiles are significantly controlled by whole-rock compositions to degrees which in turn depend on the rock types. Cr contents in rutiles from high-Ti as well as low-Mg-Ti eclogites are positively correlated to whole-rock Cr/TiO2 ratios. In contrast, Cr contents in rutiles from Mg-rich eclogites are controlled by whole-rock MgO contents. In high-Ti and Mg-rich eclogites, whole-rock compositions have strong effects on the Zr contents in rutiles, therefore, the Zr-in-rutile thermometer does not yield meaningful temperature information in these rock types. Temperatures from Zr-in-rutile thermometer for the low-Mg-Ti eclogites are usually lower than those in peak metamorphism, which might be caused by diffusion and retrogression with the aid of fluids. In most cases, Zr contents in rutile grains from single sample are homogeneous, Zr-in-rutile temperatures represent the re-equilibrium temperature during retrograde reactions. Nb/Ta ratios of eclogites are generally lower than those in rutiles, which does not support the hypothesis that rutile-eclogite is the hidden reservoir with a superchondritic Nb/Ta ratio within the interior of the earth.
- CCSD main-hole /
- Eclogite /
- Rutile /
- LA-ICPMS /
- Trace elements /
- Thermometry /
- Nb/Ta ratio

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参考文献(60)

[1]	Barth MG,Rudnick RL,Tracking the budget of Nb and Ta in the continental crust,Chemical Geology,2000(34).
[2]	Chen RX,Zheng YF,Gong B,Oxygen isotope geochemistry of ultrahigh-pressure metamorphic rocks from 200～4000m core samples of the Chinese Continental Scientific Drilling,Chemical Geology,2007.
[3]	Chen RX,Zheng YF,Gong B,Gong B,Origin of retrograde fluid in ultrahigh-pressure metamorphic rocks:Constraints from mineral hydrogen isotope and water content changes in eclogite gneiss transitions in the Sulu orogen,Geochimica et Cosmochimica Acta,2007.
[4]	Chen ZY,Li QL,Zr-in-rutile thermometry in eclogite at Jinheqiao in the Dabie orogen and its geochemical implications,Chinese Science Bulletin,2008(05).
[5]	Chen ZY,Wang DH,Chen YC,Mineral geochemistry of rutile in eclogites and its implications,Earth Science-journal of China University of Geosciences,2006(04).
[6]	Chen ZY,Yu JJ,Li XF,Wang PA,Discussion on the application of Zr-in-rutile thermometer to Sulu-Dahie UHP eclagites,Acta Geologica Sinica,2007(12).
[7]	Cherniak DJ,Manchester J,Watson EB,Zr and Hf diffusion in rutile,Earth and Planetary Science Letters,2007.
[8]	Ferry JM,Watson EB,New thermodynamic models and revised calibrations for the Ti-in-zircon and Zr-in-rutile thermometers,Contributions to Mineralogy & Petrology,2007.
[9]	Foley SF,Barth MG,Jenner GA,Rutile/melt partition coefficients for trace elements and an assessment of the influence of rutile on the trace element characteristics of sunduction zone magmas,Geochimica et Cosmochimica Acta,2000.
[10]	Foley SF,Tiepolo M,Vannucci R,Growth of early continental crust controlled by melting of amphibolite in sunduction zones,Nature,2002(6891).
[11]	Franz L,Romer RL,Klemd R,Eclogite-facies quartz veins within metahasites of the Dabie Shan (eastern China):Pressuretemperature-time-deformation path,composition of the fluid phase and fluid flow during exhumation of high-pressure rocks,Contributions to Mineralogy & Petrology,2001.
[12]	Gao CG,Liu YS,Zong KQ,Chen HH and Hu ZC,Distributions and geodynamic implications of high field strength elements in rutile from ultrahigh pressure eclogites,Earth Science-journal of China University of Geosciences,2008(04).
[13]	Gao S,Liu XM,Yuan HL,Analysis of forty-two major and trace elements of USGS and N1ST SRM Classes by LA-ICPMS,Geostandards Newsletter,2002.
[14]	Gao TS,Zheng YF,Chen RX,Application of the different types of mineral-pair geothermometers to eclogite at Huangzhen in the Dahie orogen,Acta Petrologica Sinica,2006(07).
[15]	Green TH,Significance of Nb/Ta as an indicator of geochemical processes in the crust-mantle system,Chemical Geology,1995.
[16]	Green TH,The effect of rutile on high-field-strength element behaviour in the crust mantle system,EMPG VIII J Conf Abst,2000.
[17]	Kamber BS,Collerson KD,Role of hidden\' deeply sunducted slabs in mantle depletion,Chemical Geology,2000(3-4).
[18]	Li QL,Li SG,Zheng YF,A high precision U-Pb age of metamorphic rutile in coesite-bearing eclogite from the Dabie Mountains in central China:A new constraint on the cooling history,Chemical Geology,2003.
[19]	Liang FH,Zeng LS,Chen FY,Xu ZQ and Chen J,Nature and significance of haematite-ilmenite solid solution in 540～600m eclogite of Chinese Continental Scientific Drilling main borehole:Implications for the exhumation of the CCSD eclogites,Acta Petrologica Sinica,2006(07).
[20]	Liang JL,Sun XM,Xu L,Zhai W Tang Q and Liang YH,Structural hydroxyl of rutile in UHP metamorphic rocks from Chinese Continental Scientific Drilling Project (CCSD) and areas nearby and its implication for geodynamics,Geological Review,2007(02).
[21]	Liang JL,Sun XM,Xu L,Zhai W Tang Q and Liang YH,U-Pb dating and its constraints on genesis of rubles from UHP metamorphic rocks from CCSD,Acta Petrologica Sinica,2007(12).
[22]	Liu XM,Gao S,Diwu CR,Simultaneous in-situ determination of U-Pb age and trace elements in zircon by LA-ICPMS in 20 m spot size,Chinese Science Bulletin,2007(09).
[23]	Liu XM,Gao S,Yuan HL,Analysis of 42 major and trace elements in Mass standard reference materials by 193nm LA-CPMS,Acta Petrologica Sinica,2002(03).
[24]	Liu YS,Zong KQ,Kelemen PB,Gao S,Geochemistry and magmatic history of eclagites and ultramafic rocks from the Chinese Continental Scientific Drillhole:Subduction and ultrahigh-pressure metamorphism of lower crustal cumulates,Chemical Geology,2008.
[25]	Munker C,Pfander JA,Weyer S,Buchl A Kleine T and Mezger K,Evolution of planetary cores and the Earth Moon system from Nb/Ta systematics,Science,2003.
[26]	Rudnick RL,Barth MG,Horn I,McDonough WF,Rutilebeating refractory eclagites:Missing link between continents and depleted mantle,Science,2000.
[27]	Sassi R,Harte B,Carswoll,Trace element distribution in central Dabie eclogites,Contributions to Mineralogy & Petrology,2000.
[28]	Schmidt MW,Dardon A,Chazot G,The dependence of Nb and Ta rutile-melt partitioning on melt composition and Nb/Ta fractionation during subduction processes,Earth and Planetary Science Letters,2004(3-4).
[29]	Sheng YM,Xia QK,Hao YT,Water in ruffles from UHP eclogues in the Dabie orogen,Acta Petrolagica et Mieralogica,2007(03).
[30]	Shi C,Zhang ZM,Elements behaviorduring ultra-high metamorphism:mineral compositional study of eclogites from CCSD main drill hole,Acta Petrologica Sinica,2007(12).
[31]	Tomkins HS,Powell R,Ellis DJ,The pressure dependence of the zirconium-in-rutile thermometer,Journal of Metamorphic Geology,2007.
[32]	Wang RC,Wang S,Qiu JS,Ni P,Rutile in the UHP eclogites from the CCSD main drillhole (Donghai,eastern China):Traceelement geochemistry and metallogenetic implications,Acta Petrologica Sinica,2005(02).
[33]	Watson EB,Wark DA,Thomas JB,Crystallization thermometers for zircon and rutile,Contributions to Mineralogy & Petrology,2006(04).
[34]	Wu XL,Meng DW,Han YJ,α-PbO2-type nanophase of TiO2 from coesite-bearing eclogite in the Dabie Mountains,China,American Mineralogist,2005.
[35]	Xiao YL,Sun WD,Hoefs J,Simon K,Zhang ZM,Li SG and Hofmann AW,Making continental crust through slab melting:Constraints from niobium tantalum fractionation in UHP metamorphic rutile,Geochimica et Cosmochimica Acta,2006.
[36]	Xiong XL,Trace element evidence for the growth of early continental crust by melting of rutile-bearing hydrous eclogite,Geology,2006.
[37]	Xiong XL,Adam J,Green TH,Rutile stability and rutile/melt HFSE partitioning during partial melting of hydrous basalt:Implication for TTG genesis,Chemical Geology,2005(3-4).
[38]	Xu J,Chen YC,Wang DH,Titanium mineralization in the ultrahigh-pressure metamorphic rocks from Chinese Continental Scientific Drilling 100～2000m main hole,Acta Petrologica Sinica,2004(01).
[39]	Xu ZQ,Zhang ZM,Liu FL,Yang JS Tang ZM Cheng SZ CaiYC Li TF and Cheng FY,The structure profile of 0～1200m in the main borehole,Chinese Continental Scientific Drilling and its preliminary deformation analysis,Acta Petrologica Sinica,2004(01).
[40]	Xu ZQ,Yang JS,Zhang ZM,Liu FL Yang WC Jin ZM Wang RC Luo LQ Huang L and Dong HL 2005,Completion and achievement of the Chinese Continental Scientific Drilling (CCSD) project,Geology in China,2005(02).
[41]	Yu JJ,Chen ZY,Wang PA,Trace elements geochemistry of rutile in eclogites in the northern Jiangsu Province,eastern China,Acta Petrologica Sinica,2006(07).
[42]	Yu JJ,Xu J,Chen ZY,Trace elements geochemistry of rutile in eclogitesfrom the Chinese Continental Scientific Drilling Project Main Hole,Acta GealogicaSinica,2006(12).
[43]	Zack T,Kronz A,Foley SF,Rivers T,Trace element abundances in rutiles from eclogites and associated garnet mica schists,Chemical Geology,2002.
[44]	Zack T,van Eynatten H,Kronz A,Rutile geochemistry and its potential use in quantitative provenance studies,Sedimentary Geology,2004.
[45]	Zack T,Moraes R,Kronz A,Temperature dependence of Zr in rutile:Empirical calibration of a rutile thermometer,Contributions to Mineralogy & Petrology,2004.
[46]	Zeng LS,Zhang ZM,Liu FL,Liang FH Chen J and Xu ZQ,V/Se as a new tool to fingerprint the magmatic differentiation processes in the formation of the protoliths for the CCSD eclogites,Acta Petrologica Sinica,2006(07).
[47]	Zeng LS,Liang FH,Chen ZY,Liu FL and Xu ZQ,Metamorphic garnet pyroxenite from the 540～600 m main borehole of the Chinese Continental Scientific Drilling (CCSD) project,Tectonophysics,2009.
[48]	Zhang ZM,Xu ZQ,Liu FL,Geochemistry of eclogites from the main hole (100～2050m) of the Chinese Continental Scientific Drilling Project,Acta Petrologica Sinica,2004(01).
[49]	Zhang ZM,Zhang JF,Xu ZQ,Petrology of eclogues from the main hole of the Chinese Continental Scientific Drill Project,Geology in China,2005(02).
[50]	Zhang ZM,Zhang JF,You ZD,Shen K,Ultrahigh-pressure metamorphic P-T-t path of the Sulu orogenic belt eastern central China,Acta Petrologica Sinica,2005(02).
[51]	Zhang ZM,Xiao YL,Xu ZQ,UHP metamorphic rocks from the Chinese continental scientific drilling project:I.Petrology and geochemistry of the main hole (0～2:050 m),Contrib Mineral,2006.
[52]	Zhang ZM,Shen K,Sun WD,Liu YS,Liou JG,Shi C and Wang JL,Fluids in deeply subducted continental crust:Petrology,mineral chemistry and fluid inclusion of UHP metamorphic veins from the Sulu orogen,eastern China,Geochimica et Cosmochimica Acta,2008.
[53]	Zong KQ,Liu YS,Liu XM,Zhang BH,In situ trace element geochemistry of single minerals in eclogues from the CCSD main hole (100～1100m),Acta Petrologica Sinica,2006(07).
[54]	陈振宇,李秋立,大别山金河桥榴辉岩中金红石Zr温度计及其意义,科学通报,2007(22).
[55]	陈振宇,王登红,陈毓川,榴辉岩中金红石的矿物地球化学研究及其意义,地球科学-中国地质大学学报,2006(04).
[56]	陈振宇,余金杰,李晓峰,王平安,金红石Zr温度计在苏鲁-大别榴辉岩研究中的应用:问题讨论,地质学报,2007(12).
[57]	高长贵,刘勇胜,宗克清,陈海红,胡兆初,超高压榴辉岩金红石中高场强元素变化的控制因素及其地球动力学意义,地球科学-中国地质大学学报,2008(04).
[58]	高天山,郑永飞,陈仁旭,大别造山带黄镇榴辉岩矿物不同类型地质温度计应用和对比,岩石学报,2006(07).
[59]	梁凤华,曾令森,许志琴,陈晶,陈方远,中国大陆钻探工程主孔岩心540～600米榴辉岩中赤铁矿-钛铁矿固溶体的发现及意义,岩石学报,2006(07).
[60]	梁金龙,孙晓明,徐莉,翟伟,汤倩,梁业恒,CCSD超高压变质岩中金红石结构水(OH-)傅里叶变换红外光谱测定及其地球动力学意义,地质论评,2007(02).

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CCSD主孔榴辉岩中金红石微量元素特征：LA-ICPMS分析及其意义

Trace elements of rutile in eclogites from CCSD main-hole：A LA-ICPMS study and its implication

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