• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ofioliti >SUPPLEMENTARY DATA
【24h】

SUPPLEMENTARY DATA

机译：补充数据

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Supplementary data all supplementary data are available at the web page www.ofioliti.it S1 - Analytical procedures.S2 - Electron microprobe analyses of representative garnets from metamorphic rocks of the Amasia and Stepanavan ophiolite complexes. Oxydes and end-member proportions are given in percentages.S3 - Electron microprobe analyses of representative am-phiboles from metamorphic rocks of the Amasia ophiolite complex.S4 - Electron microprobe analyses of representative chlorites from metamorphic rocks of the Amasia ophiolite complex.S5 - Electron microprobe analyses of representative micas from metamorphic rocks of the Amasia ophiolite complex.S6 - P-T pseudosection for sample AR-08-09c calculated with THERIAK-DOMINO.S7 - P-T pseudosection for sample ARM-11-13 calculated with THERIAK-DOMINO.S8 - (k390.full_lsigma), detailed ^Ar/^Ar results for am-phibole from sample AR-09-08.S9 - (k402.full_l sigma), detailed "°Ar/39Ar results for am-phibole from sample AR-09-15.S10 - (k427.full_lsigma), detailed ^Ar/^Ar results for am-phibole from sample AR-08-09c.S11 - (k428.full_lsigma), detailed 40Ar/39Ar results for white mica from sample AR-08-09c.S12 - Laser ablation trace element analyses of rutile grains from samples AR09-08 and AR09-15.Geochemical analysis The sampling was undertaken throughout several field campaigns in 2008, 2009 and 2010. Samples from the Amasia ophiolite and related metamorphics were analyzed for major and trace elements, including Rare Earth Elements (REE; Table 1). Samples were analyzed at the C.R.P.G. (Nancy, France). Analytical procedures and analyses of standards can be found on the following website (http://www.crpg.cnrs-nancy.fr/SARM). Additional data pertaining to the other Armenian ophiolites are published in Galoyan et al. (2009) and Rolland et al. (2009b; 2010).In order to designate geochemical affinities and corresponding tectonic environments for sampled rocks (Pearce and Cann, 1973; Floyd and Winchester, 1975; 1978; Pearce and Norry, 1979; Pearce, 1982; 1983; 1996) the option to study relatively immobile elements, such as Ti, Zr, Y, Nb, Ta, Th, V and REEs, was chosen because of their relative immobility throughout low grade submarine alteration (e.g, Hart et al., 1974; Humphris and Thompson, 1978) (Figs. 8A, B and C). Normal Mid Oceanic Ridge Basalt (N-MORB) normalized spidergrams for the Armenian ophiolites are presented in Fig. 8D. In Amasia, considering the geochemical data obtained from ophiolite samples and related metamorphic rocks, two tendencies are observed: supra-subduction tholeiitic and alkaline.Petrography and mineral chemistry Mineral compositions were determined by electron probe microanalysis (EPMA). The analyses are presented in Tables 2-5. They were carried out using a Cameca Camebax SX100 electron microprobe at 15 kV and 1 nA beam current, at the Blaise Pascal University (Clermont-Ferrand, France). Natural samples were used as standards.~(40)Ar/~(39)Ar Dating Geochronology was undertaken by single-grain laser ^Ar/^Ar dating on different mineral phases, amphiboles and white micas for amphibolites and green-schists parageneses, respectively. 40Ar/39Ar dating results are presented in Table 6 and Fig. 11 and detailed in the Appendices S2-S5. The amphiboles and white mica were analyzed by EPMA prior to dating in order to check mineral composition homogeneity (Tables 2 and 4). Grains between 800 and 500 um were separated by careful selection by hand-picking under a binocular microscope to prevent the presence of altered grains. The samples were then irradiated in the nuclear reactor at McMaster University in Hamilton (Canada), in position 5c, along with Hb3gr hornblende neutron flux monitor, for which an age of 1072 Ma is adopted (Turner et al., 1971). The total neutron flux density during irradiation was 9.0 x 10'8 neutron cm2. The estimated error bar on the corresponding ~(40)Ar*/~(39)Ar_K ratio is ± 0.2% (lr) in the volume where the samples were set. All ~(40)Ar/~(39)Ar measurements were undergone in the University of Nice-Sophia Antipolis (UMR 7329 Geoazur). Analyses of amphibole grains were undertaken by step heating with a 50 W C0_2 Synrad 48-5 continuous laser beam. Measurement of isotopic ratios was done with a VG3600 mass spectrometer equipped with a Daly detector system. Detailed procedures are described in Jourdan et al. (2004). The typical blank values for extraction and purification of the laser system are in the range 4.2 - 8.75, 1.2 - 3.9, and 2 - 6 cc STP for masses 40, 39 and 36, respectively. Mass discrimination was monitored by regularly analyzing air pipette volumes. Decay constants are those given by Steiger and JAEger (1977). Uncertainties on apparent ages are given at the 2a level and do not include the error on the ~(40)Ar*/~(39)Ar_K ratio of the monitor. Plateau and isochron age estimates are given with a lo error. Considering the homogeneous distribution of Ca/K values during the experiments and EPMA analysis, only one mineral phase has contributed to the ~(40)Ar/~(39)Ar signal in each sample.
机译：补充数据所有补充数据可在以下网站上获得：www.ofioliti.it。S1-分析程序。S2-对来自Amasia和Stepanavan蛇绿岩复合物变质岩的典型石榴石的电子微探针分析。氧化物和末端成员的比例以百分比表示。用Amasia蛇绿岩复合物变质岩中的代表性云母进行微探针分析。用THERIAK-DOMINO计算得到的样品AR-08-09c的S6-PT假面。用THERIAK-DOMINO.S8计算得到的样品ARM-11-13的S7-PT假面。 （k390.full_lsigma），来自样品AR-09-08.S9的安瓿的详细^ Ar / ^ Ar结果-（k402.full_l sigma），来自样品AR-的安瓿的详细的Ar / 39Ar结果09-15.S10-（k427.full_lsigma），来自样品AR-08- am-phibole的详细^ Ar / ^ Ar结果，S-08-09c.S11-（k428.full_lsigma），来自样品AR的白云母，详细的40Ar / 39Ar结果-08-09c.S12-样品AR09-08和AR中金红石晶粒的激光烧蚀痕量元素分析09-15。地球化学分析在2008年，2009年和2010年的几次野外活动中都进行了采样。对来自Amasia蛇绿岩和相关变质的样品进行了分析，分析了其中的主要和微量元素，包括稀土元素（REE;表格1）。样品在C.R.P.G. （法国南希）。分析程序和标准分析可在以下网站上找到（http://www.crpg.cnrs-nancy.fr/SARM）。 Galoyan等人发表了有关其他亚美尼亚蛇绿岩的其他数据。 （2009年）和Rolland等人。 （2009b; 2010）。为了指定取样岩石的地球化学亲和力和相应的构造环境（Pearce和Cann，1973; Floyd和Winchester，1975; 1978; Pearce和Norry，1979; Pearce，1982; 1983; 1996）之所以选择研究相对固定的元素，例如Ti，Zr，Y，Nb，Ta，Th，V和REE，是因为它们在整个低品位潜艇改造中相对固定（例如，Hart等，1974； Humphris和Thompson， （1978）（图8A，B和C）。亚美尼亚蛇绿岩的正常中洋脊玄武岩（N-MORB）归一化蜘蛛图显示在图8D中。在亚美尼亚，考虑到从蛇绿岩样品和相关的变质岩中获得的地球化学数据，观察到了两种趋势：超俯冲作用和碱性作用。岩石学和矿物化学矿物组成通过电子探针显微分析（EPMA）确定。分析结果列于表2-5。它们是在布莱斯·帕斯卡大学（法国克莱蒙·费朗）使用Cameca Camebax SX100电子微探针在15 kV和1 nA束电流下进行的。以自然样品为标准。〜（40）Ar /〜（39）Ar约会年代学是通过单粒激光^ Ar / ^ Ar测年对不同的矿物相，闪石和白云母进行闪石和绿片岩共生的，分别。表6和图11给出了40Ar / 39Ar测年结果，附录S2-S5中对此进行了详细说明。在定年之前通过EPMA分析了闪石和白云母，以检查矿物成分的均一性（表2和4）。通过在双目显微镜下手动挑选，仔细选择以分离出800至500 um的谷物，以防止出现粒化现象。然后将样品与Hb3gr角闪中子通量监测仪一起在加拿大汉密尔顿的麦克马斯特大学的核反应堆中5c位置进行辐照，采用的年龄为1072 Ma（Turner等，1971）。辐照期间的总中子通量密度为9.0 x 10'8中子cm2。对应的〜（40）Ar * /〜（39）Ar_K比的估计误差线为设置样本的体积的±0.2％（lr）。所有〜（40）Ar /〜（39）Ar测量均在Nice-Sophia Antipolis大学（UMR 7329 Geoazur）中进行。通过用50 W CO_2 Synrad 48-5连续激光束逐步加热来进行角闪石晶粒的分析。同位素比的测量是通过配备Daly检测器系统的VG3600质谱仪完成的。详细的程序在Jourdan等人中进行了描述。 （2004）。对于质量40、39和36，激光系统的提取和纯化的典型空白值分别在4.2-8.75、1.2-3.9和2-6 cc STP范围内。通过定期分析移液器的体积来监测质量歧视。衰减常数是Steiger和JAEger（1977）给出的常数。表观年龄的不确定性在2a级给出，不包括显示器的〜（40）Ar * /〜（39）Ar_K比的误差。高原和等时年龄估计值给出了lo误差。在实验和EPMA分析中考虑Ca / K值的均匀分布，每个样品中只有一个矿物相影响了〜（40）Ar /〜（39）Ar信号。

著录项

  • 来源
    《Ofioliti》 |2019年第1期|69-69|共1页
  • 作者

  • 作者单位
  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号