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| 1 | 海南岛屯昌晨星地区变基性岩体变质特征及构造意义显示文摘海南岛屯昌晨星地区变基性岩体原岩可能包括辉长岩(粗粒的斜长角闪岩)、辉长-辉绿岩(中细粒和中粗粒的斜长角闪岩)和枕状熔岩(细粒或块状斜长角闪岩)。由于受多期变质和蚀变作用的影响,组成这些岩石的多数矿物如角闪石、斜长石和绿泥石等常表现两个或两个以上的世代。角闪石环带矿物化学分析表明,从核到边,钛、铝、(钠+钾)含量增长,反映了压力和温度同时升高的进变质演化过程;相反,角闪石环带从核部到边部钛、铝和钾+钠含量降低,则暗示温度和压力同时降低而进入另一个退变质演化阶段。所获得的 Sm-Nd 全岩及角闪石的内部等时线年龄为128±12 Ma、Rb-Sr 全岩等时线年龄分别为131.8±6.2 Ma和344±11Ma。根据角闪石环带、矿物共生组合、微结构以及变质温压条件的半定量计算和同位素定年,屯昌晨星地区变基性岩体的变质作用可能经历了三个演化阶段。第一阶段(~527~450 Ma)可能记录了与洋底变质作用有关的(亚)绿片岩相至角闪岩相条件,早期的阳起石、钙质角闪石及镁铁质角闪石残余核为该阶段的产物;第二阶段(~330~240 Ma)进变质作用达到高峰的P=~0.9 GPa、T=~700℃,显示了过渡的高角闪石相-麻粒岩相变质条件。广泛的剪切变形及韭闪质普通角闪石-韭闪石边是该阶段的产物;第三阶段(~130 Ma~90 Ma)显示一个绿片岩相变质条件(P=~0.1~0.3 GPa、7=~300~400℃),可能与区域/热接触变质有关。因而屯昌晨星地区变基性岩体的变质作用演化显示了一个逆时针 P-T-t 轨迹,最可能与古太平洋板块俯冲导致的大陆边缘裂解及洋壳化和随后的年轻洋壳消亡、陆(华南大陆)-陆(印支板块)碰撞事件有关。 | 许德如 夏斌 Nonna Bakun-Czubarow 马驰 李鹏春 Robert Bachlinskl 陈广浩 | 2006 | 岩石学报2006,22,12: | 14 |
| 2 | The role of individual accountability in promoting quality management systems显示文摘 | Nonna Turusbekova Manda Broekhuis Ben Emans and Eric Molleman | 2007 | Total Quality Management &Business Excellence2007,,5: | 1 |
| 3 | The Internal Audit Function:Perceptions of Internal Audit Roles,Effectiveness,and Evaluation显示文摘 | Dominic S.B.Soh Nonna Martinov-Bennie | | 0,,: | 1 |
| 4 | Simulation analysis of the ability of different types of multi-electrodes to increase selectivity of detection and to reduce cross-talk显示文摘 | George GV Catherine DV Nonna AD | 2003 | Journal of Electromyography and Kinesiology2003,13,2: | 1 |
| 5 | Th*~ Strength of an Accounting Firm's Ethical Enviromnenl and the Quality of Auditors' Judgments 显示文摘 | Nonna Marlinov-Bennie Gal2 ' Pflugrath | 2009 | Journal of Business Etllies2009,87,2: | 1 |
| 6 | Outbreak of Streptococcus equi subsp. zooepidemicus infections in cats显示文摘 | Shlomo Blum Daniel Elad Nonna Zukin Inna Lysnyansky Limor Weisblith Shmuel Perl Orly Netanel Dan David | 2010 | Veterinary Microbiology2010,,1: | 1 |
| 7 | Bernard identification of dengue virus in respiratory specimens from a patient who had recently traveled from a region where dengue virus infection is endemic显示文摘 | Nonna P Tavakoli Ellis H Tobin Susan J Wong | 2007 | J Clin Microbiol2007,45,: | 1 |
| 8 | The role of individualaccountability in promoting quality managementsystems 显示文摘 | Nonna Turusbekova Manda Broekhuis Ben E-mans and Eric Molleman | 2007 | Total Quality Management & BusinessExcellence2007,18,5: | 1 |
| 9 | Geological characteristics and metallogenesis of the Shilu Fe-ore deposit in Hainan Province, South China显示文摘 | Deru Xu Zhilin Wang Jianxin Cai Chuanjun Wu Nonna Bakun-Czubarow Li Wang Huayong Chen Michael J. Baker Monika Agnieszka Kusiak | 2012 | Ore Geology Reviews2012,,: | 1 |
| 10 | Fetal Macrosomia -A Continuing Obstetric Challenge 显示文摘 | Nonna Heiskanen Kaisa Raatikainen Seppo Heinonen | 2006 | Biol of the Neonate2006,90,: | 1 |
| 11 | Improved physical performance after treatment of renal anemia with recombinant human erythropoietin显示文摘 | Braumann KM Nonnas t- Daniel B Boning 0 et a1 | 1991 | Nephron1991,58,2: | 1 |
| 12 | Elevater raatemal serum hCG in the second trimester increases prematurity rote and need for neonatal intensive care primip -arous preeclamptic pregnancies 显示文摘 | Annaleena H Nonna M | 2001 | Hypertension in Pregnancy2001,20,1: | 1 |
| 13 | Petrology and geochemistry of the Shilu Fe-polymetallic ore deposit in Hainan Province of South China: Implications for the origin of Neoproterozoic BIFs显示文摘The Shilu Fe-polymetallic ore deposit,a famous hematite-rich Fe-ore deposit,is situated at the western Hainan Province of south China.The deposit characterizes the upper Fe ores and the lower Co-Cu ores,which are mainly hosted within a low-grade to medium-grade,dominantly submarine metamorphosed siliciclastic and carbonate sedimentary succession of the Neoproterozoic Shilu Group.Three facies types of metamorphosed BIFs,i.e.the oxide facies,the silicate-oxide facies and the sulfide-carbonate facies BIFs,are identified within the sixth sequence of the Shilu Group.The oxide facies BIF(i.e.the Fe-rich itabirites or ores)consists of alternating hematite-rich microbands with quartz-rich microbands;the silicate-oxide facies BIF(i.e.the Fe-poor itabirites or ores)comprises alternating millimeter-to a few tens meter-scale,magnetite-hematite-rich bands with calcsilicate-rich(garnet+actinolite+diopside+epidote+quartz)meso-to microbands;and the sulfide-carbonate facies BIF(i.e.the Co-Cu ores)contains alternating macro-to mesobands of Co-bearing pyrite and pyrrhotite,and chalcopyrite with mesobands of dolomite+calcite+diopside+quartz and/or chlorite+sericite+quartz.The blastooolitic,blastopelletoid blastocolloidal and blastopsammitic textures,and blasobedding structures which most likely represent primary sedimentation are often observed in these BIF facies.The interbedded host rocks with the BIFs mainly are the pyroxene-amphibole rocks and the banded or impure dolostones,and also contain banded or laminated structures,and lepido-gra-noblastic,nematoblastic and/or blastoclastic textures.Compositionally,the main host rocks,the pyroxene-amphibole rocks contain basic-intermediate SiO_2(~54.00 wt.%),CaO(~14.19 wt.%),MgO(~9.68 wt.%)and Al_2O_3(~8.49 wt.%)with a positive correlation between Al_2O_3 and TiO_2.The UCC-like Zr and Hf abundances,high Ba content andεNd(t)value(^-5.99)as well as the ratios of La/YbPAAS(0.17~1.00),δEuPAAS(0.88~1.12)andδCePAAS(0.93~1.13)commonly reveal that the protoliths to this type rocks are hydrogenic with a large contribution of terrigenous sediments and minor hydrothermal input.The high CaO+MgO+LOI contents and the extremely low trace element and REEconcentrations as well as the ratios of Y/Ho(44~45),δEuPAAS(1.13~1.57)andδCePAAS(0.69~0.98)reflect a marine origin with minor terrigenous materials for the banded or impure dolostones.Moreover,this type rocks also account for a negativeεNd(t)value(^-7.49).The oxide facies BIF is dominated by Fe_2O_3+FeO(~75.59wt.%)and SiO_2(~20.47 wt.%)with aεNd(t)value of^-6.10.The variable contents in Al_2O_3,TiO 2,K2O,Na2O,Zr,Hf and∑REE,and variable ratios of Y/Ho(24~39)andδEuPAAS(0.86~11.07)suggest the precursor sediments to this facies BIF are admixtures of sea-floor hydrothermal fluids and seawaters with minor involvement of detrital components.Compared to the oxide facies BIF,the silicate-oxide facies BIF is lower in Fe_2O_3+Fe O(~39.81wt.%)and Ba but higher in SiO_2(~42.54 wt.%),Al2O3(~3.60 wt.%),TiO_2(~0.19 wt.%),MgO(~1.12 wt.%),CaO(~9.06 wt.%),K_2O(~0.98 wt.%),Mn and Zr.The ratios of Y/Ho(25~34),La/YbPAAS(0.14-0.74)andδEuPAAS(0.91~1.12)most likely are linked to higher degree of detrital contamintants.While the sulfide-caronate facies BIF is main but variable in Fe_2O_3+Fe O(15.79~57.91 wt.%),SiO 2(0.54~61.52 wt.%),MgO(0.12~16.09wt.%),CaO(0.17~23.41 wt.%)and LOI(8.28-30.06 wt.%).The generally low contents in trace elements(including REE)except for an obvious enrichment in Pb,and the positive Ce anomalies(δCePAAS=1.04~1.95)and negative Pr anomalies(δPrPAAS=0.67~0.93),as well as the variable ratios ofδEuPAAS(0.72~1.71),La/YbPAAS(0.26~1.60)and Y/Ho(26~57)suggest that the precursors to the sulfide-carbonate facies BIF mainly are metalliferious sediments from deep-marine hydrotheral source with minor detrital components.The T2DM ages(ca.2.0 Ga)imply that the Shilu BIFs and interbedded host rocks contain a component with Paleoproterozoic crustal residence age due to a significant crustal accretion event at ca.2.0 Ga in Hainan Island.In connection with the petrographical and mineralogical relationship,we conclude that the precursor precipitates to the Shilu BIFs are variable degree of admixtures of the Fe-Co-Cu-(Si)-rich hydrothermal fluids and detrital components from seawater and fresh water carring continental landmass;whereas the protolith to the main interbedded host rocks,i.e.the pyroxene-amphibole rocks,most likely was terrigenous,fine-grained clastic-sediments but with significant input of hydrothermal fluids in a seawater environment.As a result,a continent marginal marine basin is proposed for deposition of the Shilu BIFs and interbedded host rocks.Sea-level fluctuations caused by marine transgression–regressions possibly contributed to changes in the composition and varied input of the terrigenous sediments. | Deru Xu Zhilin Wang Jianxin Cai Chuanjun Wu Wangwei Fu Nonna Bakun-Czubarow | 2012 | 矿床地质2012,31,S1: | 0 |
| 14 | The Shilu Iron Ore Deposit in Hainan Province,South China:A Structurally and Hydrothermally Reworked and Re-Enriched Lake-Superior-Type BIF Iron Deposit显示文摘The Shilu iron ore deposit,located in the western Hainan Province,South China,is one of the most important iron-ore mining districts in China not only for its huge reserves of hematite-rich ores,but also for its potentially economic significance of associated metals of copper,cobalt,nickel,silver,lead and zinc,and of non-metals of dolomite,quartzite,barite,gypsum and sulfur. | Bakun-Czubarow Nonna Kusiak Monika Agnieszka | 2009 | 矿物学报2009,29,S1: | 0 |