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Review of the Lithium isotope System as a Geochemical Tracer

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Review of the Lithium Isotope System as a Geochemical Tracer

中国科学院地质与地球物理研究所2007学术年会

作者： Yan-Jie Tang,~1 Hong-Fu Zhang,and Ji-Feng Ying State Key laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,chinese academy of {3., P.O.Box 9825,beijing 100029,china

Lithium isotopes have many advantageous characteristics as geochemical tracers for a wide range of geological processes,covering fluid/melt-mineral interactions from the Earth’s surface to the *** latest developments in Li isotope geochemistry,in terms of measuring techniques, major geochemical reservoirs,the contrasting behaviors during near-surface weathering,and crust/ mantle cycling of materials in subduction zones,as well as the signature of convective mantle,and controlling factors in Li isotopic fractionation are briefly reviewed in this *** better quantification of partition coefficients(mineral-melt/fluid) and fractionation factors(such as temperature and diffusion coefficients),the Li isotope system will become a powerful geochemical tracer in future studies.

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Review of the Lithium isotope System as a Geochemical Tracer

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Review of the Lithium Isotope System as a Geochemical Tracer

中国科学院地质与地球物理研究所2006学术年会

作者： Yan-Jie Tang,Hong-Fu Zhang and Ji-Feng Ying State Key laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,chinese academy of {3.,P.O.Box 9825,beijing 100029,china

Li isotopes have many advantageous characteristics as geochemical tracer for a wide range of geological processes,covering fluid/melt-mineral interactions from the Earth’s surface to the *** latest developments in Li isotope geochemistry,in terms of measuring techniques, major geochemical reservoirs,the behaviors during the near-surface weathering and crust/mantle cycling of materials in subducting zone,as well as the signature of convective mantle and controlling factors in Li isotopic fractionation are briefly reviewed in this *** better quantification of partition coefficients(mineral-melt/fiuid) and fractionation factors of Li isotopes (such as temperature and diffusion coefficients),Li isotope system will be a powerful geochemical tracer in future studies.

关键词： Lithium isotope review geochemical tracer

LATE MESOZOIC SUBDUCTION PROCESS BENEATH SOUTHEASTERN china AS REVEALEDBY THE SPATIAL- TEMPORAL PATTERN OFMAGMATISM

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Geotectonica et Metallogenia 2001年第1期25卷 68-70页

作者： WANG Yang 1, DENG Jin fu 1, WANG Ji yang 2 and XIONG Liang ping 2 (1. Division of Petrology, china University of Geosciences, beijing 100083. china 2. Institute of Geology and Geophysics, chinese academy of sciences, beijing 100029, china) Division of Petrology China University of GeosciencesBeijing 100083China Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China

Southeastern china covers an extensive area from the lowerreaches of the Yangtze Riverto the southeast coastof china *** of its main geological features isthe extensiveJura- Cretaceous (Yanshanian) magmatism and related metallogenesis. Recently,some re-searchers advocate the mantle plume model as an explanation,but all of their evidences artoo ***,the seaward convex shape of the SE china coastline,which isdominantly composed of Jura- Cretaceous batholiths and volcanic strata,implies thatit was aconvergent margin between SE china continent and the palaeo- Pacific plate during the lateMesozoic *** betterunderstanding on the relation among magmatism,tectonic regimeand dynamics,the spatial- temporal pattern of late Mesozoic (180 - 90 Ma) igneous rocks isconstructed by nearly2 0 0 isotope age valuesfrom *** these age values,mostwere obtained by Rb- Sr isochron method,and others from zircon U- Pb or40　 Ar- 3

关键词： LATE MESOZOIC SUBDUCTION PROCESS BENEATH SOUTHEASTERN china AS REVEALEDBY THE SPATIAL TEMPORAL PATTERN OFMAGMATISM AS

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Empirical relationship between leaf wax n-alkaneδD and altitude in the Wuyi,Shennongjia and Tianshan Mountains,china:Implications for paleoaltimetry

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Empirical relationship between leaf wax n-alkaneδD and alti...

中国科学院地质与地球物理研究所第11届（2011年度）学术年会

作者： Pan Luo~(a,*),Ping’an Peng~b,Gerd Gleixner~c,Zhuo Zheng~d,Zhonghe Pang~a,Zhongli Ding~a a Key laboratory of Cenozoic Geology and Environment,Institute of Geology and Geophysics,chinese academy of {3.,beijing 100029,china b Guangzhou Institute of Geochemistry,chinese academy of {3.,Guangzhou 510640,china c Max Planck Institute for Biogeochemistry,Jena 07745,Germany d Department of Earth {3.,Sun Yat-sen University,Guangzhou 510275,china

Estimating past elevation not only provides evidence for vertical movements of the Earth’s lithosphere,but also increases our understanding of interactions between tectonics,relief and climate in geological history. Development of biomarker hydrogen isotope-based paleoaltimetry techniques that can be applied to a wide range of sample types is therefore of continuing *** we present leaf wax-derived n-alkane 8D (δD) values along three soil altitudinal transects,at different latitudes,in the Wuyi,Shennongjia and Tianshan Mountains in china,to investigateδD gradients and the apparent fractionation between leaf wax and precipitation(ε). We find that soilδD track altitudinal variations of precipitation 8D along the three transects that span variable environment conditions and vertical vegetation *** empiricalδD-altitude relation is therefore established in which the averageδD lapse rate of - 2.27±0.3.‰/100 m is suitable for predicting relative paleoelevation change(relative uplift).The application of this empirical gradient is restricted to phases in the mountain uplift stage when the atmospheric circulation had not distinctly changed and to when the climate was not *** empiricalδD-latitude-altitude formula is also calculated:δD = 3.483.AT - 0.0227ALT - 261.5, which gives the preliminary spatial distribution pattern ofδD in modern china. Mean value ofε in the extreme humid Wuyi Mountains is quite negative(-154‰),compared to the humid Shennongjia(-129‰) and the arid(but with abundant summer precipitation) Tianshan Mountains(- 13.‰), which suggests aridity or water availability in the growing season is the primary factor controlling soil/ sedimentε.Along the Tianshan transects,values ofε are speculated to be constant with altitude;while along the Wuyi and Shennongjia transects,ε are also constant at the low-mid altitudes,but become slightly more negative at high altitudes which could be attributed to overestimates of precipitation 8D or the vegetation

关键词： leaf wax n-alkane deuterium/hydrogen isotopic ratio inverse altitude effect paleoelevation paleoaltimetry

Early cretaceous granitoids and their implications for the collapse of the Dabie orogen,eastern china:shrimp zircon U-Pb dating and geochemistry

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Early cretaceous granitoids and their implications for the c...

中国科学院地质与地球物理研究所2007学术年会

作者： Haijin Xu~(a,b),Changqian Ma~b,Kai Ye~(a,*) a State Key laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,chinese academy of {3.. beijing,100029.P.O.Box 9825,PR china b Faculty of Earth {3..china University of Geo{3.,Wuhan,43.074.PR china

Two stages of early Cretaceous post-orogenic granitoids are recognized in the Dabie orogen,eastern china,which recorded processes of extensional collapse of the *** early stage granitoids(～13. Ma) are foliated hornblende quartz monzonites and porphyritic *** are of high-K calc-alkaline series and metaluminous to weakly peraluminous,with high KO and low MgO contents(Mg values:3..0-46.0),they contain high Sr,low Y and heavy rare earth elements(HREE),and have high Sr/Y and(La/Yb) ratios,without clear negative Eu,Sr and Ti *** early stage deformed granitoids have adakitic geochemical compositions and are equilibrated with residues rich in garnet and poor in anorthite-rich plagioclase,and thus indicate the existence of an over-thickened(>50 km) crustal root beneath the orogen at～13. *** later stage granitoids(～128 Ma) are undeformed fine-grained ***-grained K-feldspar granites and coarse-grained K-feldspar *** belong to a peraluminous and high-K calc-alkaline to shoshonite series,and display a flat HREE pattern and have strong negative *** and Ti anomalies,with low Sr/Y and(La/Tb) *** late stage granitoids are equilibrated with residues rich in anorthite-rich plagioclase,hornblende,ilmenite/titanite and poor in garnet,indicating that the crust of the Dabie orogen became thinner(3. km) at～128 *** zircon U-Pb ages and changing compositional trends for these two stages of granitoids indicate that the over-thickened crust formed by the Triassic continental subduction/collision under the Dabie orogen remained until the early Cretaceous,and collapsed quickly in a few million years during the early Cretaceous.

关键词： Early Cretaceous Granitoids Extensional collapse The Dabie orogen

Natural gas origins of large and medium-scale gas fields in china sedimentary basins

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Science china Earth sciences 2008年第S1期51卷 1-13页

作者： ZHANG ShuiChang &ZHU GuangYou Research Center of Research Institutes of Petrochina Exploration and Development,beijing 100083.china Research Center of Research Institutes of Petrochina Exploration and Development

china sedimentary basins present abundant natural gas resource thanks to its unique geological *** highly-matured hydrocarbon source rocks,widespread coal-measure strata and low temperature Quaternary saline strata,etc.,indicate the wide foreground of china natural gas resources. Up to now,most of the petroliferous basins have been discovered to have wholesale natural gas accumulation from Precambrian,Paleozoic,Mesozoic to Cenozoic in the east,the central,the west and the coast of *** large and medium-scale gas reservoirs are mainly composed of hydrocarbon gas with big dry coefficient,tiny non-hydrocarbon,wide carbon {3. distribution and varying origin types,the hydrocarbon gas includes coal-formed gas,oil-formed gas,biogenic gas and inorganic gas, ***-formed gas is the main type of china natural gas resources,in particular several explored large-scale gas fields(>100 billion cubic meter)of Kela 2,Sulige and Daniudi,etc.,they all belong to coal-formed gas fields or the gas fields consisting mostly of coal-formed ***-formed gas is also abundant in china marine basins,for example marine natural gas of Sichuan Basin generated from crude oil cracking *** and secondary biogenic gas fields were discovered respectively in the Qaidam Basin and Western Slope of Songliao *** addition,inorganic gases are mainly distributed in the eastern china,in particular the Songliao Basin with abundant carbon dioxide accumulation,indicating that the eastern china present large exploration potential of inorganic gas.

关键词： natural gas origin sedimentary basin large and medium-scale gas field

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The Spatial Database of Digital geological Map of china at 1:1M

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The Spatial Database of Digital Geological Map of China at 1...

第五届全国地质制图与GIS学术讨论会

作者： DING Xiaozhong~1 HAN Kunying~(1,2) KE Xue~1 JU Yuanjing~1 PANG Jianfeng~1 1,Institute of Geology,chinese academy Geology Science,beijing {3.,china. 2,Faculty of Geosciences and Resources,china University of Geosciences,beijing 100083. china.

＜正＞The Spatial Database of the Digital geological Map of china at 1:1 M（V1.0）is made up of 64（whole and partial）map sheets,Each map sheet is represented by the rectangle of 6°longitude and 4°latitude,according to the international map standard at 1:1M,It mainly includes geological map database,geographical map database,metadata database et al,The geological map database is constructed on the basis of the 1:500 000 geological map database（1999）,and it absorbs the latest information and outcomes of 1:250 000,1:50000 geological mapping and special subject study,It contains strata,igneous rock,fault,special geological unit（eclogite, blueschist,ophiolite et al.）,isotope age determination and drill hole et al,According to the feature and requirement of the geological map database,the geographical map database was constructed on the basis of 1:1 M topographical map database（ArcInfo） which provided by National Geomatics Center of china,It contains boundaries,river system,inhabitant areas,transportation et al,The Spatial Database of Digital geological Map of china at 1:1M was built with MapGIS,ArcGIS and Access,The quantity of data is as large as 2.0GB,The spatial database management system possesses functions of map retrieval andquery,automatic map making and automatic legend drawing,The database system will serve on the network in the future,which should be updated and maintained regularly.

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桂北九万大山—元宝山地区锡多金属矿床的地质特征和成矿系列

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矿床地质 1987年第4期 23-32页

作者：毛景文中国地质科学院矿床地质研究所

本文从成矿系列角度出发,讨论了桂北九万大山—元宝山地区锡多金属矿床的地质特征和控矿因素,总结了矿化作用在时间上的递变规律和矿床、矿体及元素在空间上的分布特点,并提出了该区的交代系列和交代建造,探讨了锡多金属矿床与其外围贱... 详细信息

本文从成矿系列角度出发,讨论了桂北九万大山—元宝山地区锡多金属矿床的地质特征和控矿因素,总结了矿化作用在时间上的递变规律和矿床、矿体及元素在空间上的分布特点,并提出了该区的交代系列和交代建造,探讨了锡多金属矿床与其外围贱金属矿床之间的联系,最后建立了与雪峰期黑云母花岗岩有关的多金属矿床成矿系列的成矿模式。

关键词：桂北九万人山一元宝山地区锡多金属矿床成矿系列交代系列矿化分带

Precise and accurate determination of Sm,Nd concentrations and Nd isotopic compositions in geological samples by Multi-Collector ICP-MS

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Precise and accurate determination of Sm,Nd concentrations a...

中国矿物岩石地球化学学会第13.学术年会

作者： YANG Yue-heng,CHU Zhu-yin,WU Fu-yuan,XIE Lie-wen,YANG Jin-hui State Key laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,chinese academy of {3.,P.B.9825, beijing,100029,P.R.china

The classical Sm-Nd radiogenic isotopic system has been extensively used in geochemistry and cosmochemistry as a powerful geochemical tracer or *** the radiogenic Nd/Nd isotope ratio, multi-collector thermal ionization mass spectrometry(TIMS) is almost invariably used since the mid 1960s, owing to its inherent high *** classic TIMS technique is still regarded as the benchmark for Nd isotopic ***;it is becoming increasingly important to determine Sm,Nd concentrations in addition to Nd isotopic compositions. Since its commercial advent in the mid 1990s and more recently,multi-collector inductively coupled plasma mass spectrometry(MC-ICP MS) has become a routine and competitive technique for Nd/Nd isotope

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