|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 微束分析测试技术十年(2011~2020)进展与展望显示文摘现代地球科学研究的重大突破在很大程度上取决于观测和分析技术的创新。新世纪以来,我国地球科学领域引进了一批高性能新型微束分析仪器设备,建立了一批高规格的实验室。本文回顾了近十年来微束分析技术与方法的主要进展及其在地球科学研究中的应用实例,包括电子探针、扫描电镜、透射电镜、大型离子探针、纳米离子探针、飞行时间二次离子质谱、激光剥蚀等离子体质谱、激光诱导原子探针、原子探针技术、显微红外光谱、同步辐射等,这些分析技术的进步和广泛应用极大地提高了我们对地球和行星演化历史及许多地质过程的理解。今后,应加快微束分析的新技术、新方法和新标准的开发,特别是高水平人才队伍建设,提高创新能力并在国际学术舞台上发挥重要作用。 | 陈意 胡兆初 贾丽辉 李金华 李秋立 李晓光 李展平 龙涛 唐旭 王建 夏小平 杨蔚 原江燕 张迪 李献华 | 2021 | 矿物岩石地球化学通报2021，40，1： | 17 |
| 2 | Major advances in microbeam analytical techniques and their applications in Earth Science显示文摘Major breakthroughs in modern Earth Science research largely depend on innovations in observation and analytical techniques.Over the last two decades,there have been great advances in modern microbeam analytical techniques,which are widely used in various subject areas in the broad field of Earth Sciences.Remarkable enhancements to observation and analysis techniques at the microscale have significantly improved our understanding of the Earth’s history and its many geological processes[1–3].Microbeam analytical techniques can be divided into | Xian-Hua Li Qiu-Li Li | 2016 | Science Bulletin2016，61，23： | 8 |
| 3 | 熔体包裹体在镁铁质火山岩成因研究中的应用显示文摘熔体包裹体是矿物在生长或结晶过程中捕获的小的硅酸盐熔体,它保存了原生岩浆、岩浆演化以及源区性质等方面的重要信息。然而,全岩成分只保留了经历复杂地质过程(如分离结晶、岩浆混合、地壳混染和后期蚀变等)之后的"混合"成分,有关岩石起源方面的重要信息部分或全部消失。本文系统总结了熔体包裹体的研究方法,包括岩相学观察、挑选寄主矿物、加热均一化、镶嵌和磨制样品靶、成分分析等,介绍了熔体包裹体方法在镁铁质火山岩成因研究中一些应用实例。 | 任钟元 张乐 吴亚东 徐晓波 张磊 梅盛旺 于亚锋 罗清晨 张庆霖 | 2018 | 矿物岩石地球化学通报2018，37，3： | 7 |
| 4 | Root exudate chemistry affects soil carbon mobilization via microbial community reassembly显示文摘Plant roots are one of the major mediators that allocate carbon captured from the atmosphere to soils as rhizodeposits,including root exudates.Although rhizodeposition regulates both microbial activity and the biogeochemical cycling of nutrients,the effects of particular exudate species on soil carbon fluxes and key rhizosphere microorganisms remain unclear.By combining high-throughput sequencing,q-PCR,and NanoSIMS analyses,we characterized the bacterial community structure,quantified total bacteria depending on root exudate chemistry,and analyzed the consequences on the mobility of mineral-protected carbon.Using well-controlled incubation experiments,we showed that the three most abundant groups of root exudates(amino acids,carboxylic acids,and sugars)have contrasting effects on the release of dissolved organic carbon(DOC)and bioavailable Fe in an Ultisol through the disruption of organo-mineral associations and the alteration of bacterial communities,thus priming organic matter decomposition in the rhizosphere.High resolution(down to 50 nm)NanoSIMS images of mineral particles indicated that iron and silicon colocalized significantly more organic carbon following amino acid inputs than treatments without exudates or with carboxylic acids.The application of sugar strongly reduced microbial diversity without impacting soil carbon mobilization.Carboxylic acids increased the prevalence of Actinobacteria and facilitated carbon mobilization,whereas amino acid addition increased the abundances of Proteobacteria that prevented DOC release.In summary,root exudate functions are defined by their chemical composition that regulates bacterial community composition and,consequently,the biogeochemical cycling of carbon in the rhizosphere. | Tao Wen Guang-Hui Yu Wen-Dan Hong Jun Yuan Guo-Qing Niu Peng-Hao Xie Fu-Sheng Sun Lao-Dong Guo Yakov Kuzyakov Qi-Rong Shen | 2022 | Fundamental Research2022，2，5： | 4 |
| 5 | Applications of Light Stable Isotopes(C, O, H) in the Study of Sandstone Diagenesis: A Review显示文摘This article reviews the applications of light stable isotope, including carbon, oxygen and hydrogen, in thestudies on origin and formation temperature of authigenic carbonate, quartz and clay minerals. Theoretical knowledge andanalytical methods for major light stable isotopes are introduced in detail. Negative and positive δ^(13)C values indicatesignificant differences on the origin of carbonate cements. The δ^(18)O value is an effective palaeotemperature scale forauthigenic minerals formation. Various fractionation equations between δ^(18)O and temperature are proposed for carbonatecements, quartz cements and clay minerals, whose merit and demerit, applicable conditions are clarified clearly. Clumpedisotope analysis can reconstruct the temperature of carbonate precipitation with no requirement on the δ^(18)O of initial waters,which makes temperature calculation of carbonate cements formation more convenient and accurate. Hydrogen and oxygenisotopes mainly reflect the origin of diagenetic fluid for clay mineral formation, providing reliable evidence for diageneticenvironment analysis. This work aims at helping researchers for better understanding the applications of light stable isotopein sandstone diagenesis. | XI Kelai CAO Yingchang LIN Miruo LIU Keyu WU Songtao YUAN Guanghui YANG Tian | 2019 | Acta Geologica Sinica(English Edition)2019，93，1： | 4 |
| 6 | Gold and antimony metallogenic relations and ore-forming process of Qinglong Sb(Au) deposit in Youjiang basin, SW China: Sulfide trace elements and sulfur isotopes显示文摘In the northwestern margin of the Youjiang basin(NWYB)in SW China,many Carlin-like gold deposits are highly antimony(Sb)-rich,and many vein-type Sb deposits contain much Au.These deposits have similar ages,host rocks,ore-forming temperatures,ore-related alterations and ore mineral assemblages,but the Au and Sb metallogenic relations and their ore-forming process remain enigmatic.Here we investigate the large Qinglong Sb deposit in the NWYB,which has extensive sub-economic Au mineralization,and present a new metallogenic model based on in-situ trace elements(EPMA and LA-ICP-MS)and sulfur isotopes(NanoSIMS and fs-LA-MC-ICPMS)of the ore sulfides.At Qinglong,economic Sb ores contain coarse-grained stibnite,jasperoid quartz and fluorite,whilst the sub-economic Au–Sb ores comprise dominantly veined quartz,arsenian pyrite and fine-grained stibnite.Three generations of ore-related pyrite(Py1,Py2 and Py3)and two generations of stibnite(Stb1 and Stb2)are identified based on their texture,chemistry,and sulfur isotopes.The pre-ore Py1 is characterized by the lower ore element(Au,As,Sb,Cu and Ag)contents(mostly below the LA-ICP-MS detection limit)and Co/Ni ratios(average 0.31)than the ore-stage pyrites(Py2 and Py3),implying a sedimentary/diagenetic origin.The Py2 and Py3 have elevated ore element abundance(maximum As=6500 ppm,Au=22 ppm,Sb=6300 ppm,Cu=951 ppm,Ag=77 ppm)and Co/Ni ratios(average 1.84),and have positive As vs.Au–Sb–Cu–Ag correlations.Early-ore Stb1 has lower As(0.12–0.30 wt.%)than late-ore Stb2(0.91–1.20 wt.%).These features show that the progressive As enrichment in ore sulfides is accompanied by increasing Au,Sb,Cu and Ag with the hydrothermal evolution,thereby making As a good proxy for Au.As-rich,As-poor and As-free zones are identified via NanoSIMS mapping of the Au-bearing pyrite.The As-rich zones in the Qinglong Au-bearing pyrites(Py2 and Py3)and ore stibnites(Stb1 and Stb2)have narrowδ^(34)SH_(2)S ranges(-8.9‰to +4.1‰,average-3.1‰)and-2.9‰to +6.9‰,average + 1.3‰),respectively,indicating that the Au-rich and Sb-rich fluids may have had the same sulfur source.Published in-situ sulfur isotopic data of pyrite As-rich zones from other Carlin-like Au deposits(Shuiyindong,Taipingdong,Nayang,Getang and Lianhuashan)in the NWYB have similar ore-fluidδSH_(2)S values(-4.5‰to +6.7‰,average-0.6‰)to those of Qinglong.Therefore,we infer that the sulfur of both Au and Sb mineralization was derived from the same magmatic-related source(0±5‰)in the NWYB.Moreover,the core of pyrites(Py1)has variable S isotope fractionation(-18.9‰to +18.1‰,mostly +3‰to +12‰),suggesting that the higher-^(34)S H_(2)S was produced by bacterial sulfate reduction(BSR).The hydrothermal pyrite(Py2 and Py3)δ^(34)S values gradually decrease with increasing As concentrations,and ultimately,within the restricted range(-5‰to +5‰)in As-rich zones.This variation implies that the As-rich pyrite was formed through ongoing interactions of the magmatic-hydrothermal fluid with pre-existing sedimentary pyrites,causing the progressive decreasing δ^(34)S values with As content increase,Hence,the fluid/mineral interaction may have generated the observed variation in δ^(34)S and As contents.Overall,comparing the Au and Sb deposits in the NWYB,we favor a magmatic-related source for the Au–Sb–As-rich fluids,but the Au-and Sb-ore fluids were likely evolved at separate stages in the ore-forming system. | Jun Chen Zhi-Long Huang Rui-Dong Yang Li-Juan Du Ming-Yang Liao | 2021 | Geoscience Frontiers2021，12，2： | 3 |
| 7 | 高温高压法合成金刚石微区原位碳同位素及阴极发光特征显示文摘当前大量的研究集中在天然产出的金刚石上,而人工合成金刚石的研究往往容易被忽视。对人工合成金刚石进行详细的研究,结合已有天然金刚石的认知有利于揭示天然金刚石形成过程,有利于天然金刚石的鉴定。本研究综合利用显微镜、纳米离子探针、拉曼光谱、阴极发光等分析技术,对人工合成金刚石的晶体结构、包裹体、微区碳同位素、以及阴极发光图像等特征进行了详细的研究。研究揭示其阴极发光图像与天然宝石级金刚石有明显的区别,二次离子探针数据进一步表明其阴极发光图像的明暗差异与金刚石中微量元素氮的含量高低有关。 | 朱志勇 徐耀明 周巍 | 2020 | 地球学报2020，41，5： | 1 |
| 8 | Rapid screening of Zr-containing particles from Chang’e-5 lunar soil samples for isotope geochronology:Technical roadmap for future study显示文摘New samples returned by China Chang’e-5(CE-5)mission offer an opportunity for studying the lunar geologic longevity,space weathering,and regolith evolution.The age determination of the CE-5 samples was among the first scientific questions to be answered.However,the precious samples,most in the micrometer size range,challenge many traditional analyses on large single crystals of zircon developed for massive bulk samples.Here,we developed a non-destructive rapid screening of individual zirconium-containing particle for isotope geochronology based on a Micro X-ray fluorescence analysis(μXRF).The selected particles were verified via scanning electron microscopy(SEM),3D X-ray microscopy(XRM),and focused ion beam scanning electron microscopy(FIB-SEM)techniques,which showed that zirconium-bearing minerals with several microns were precisely positioned and readily suitable for site-specific isotopic dating by second ion mass spectrometry(SIMS).Such protocol could be also appli-cable in non-destructively screening other types of particles for different scientific purposes.We there-fore proposed a correlative workflow for comprehensively studying the CE-5 lunar samples from single particles on nanometer to atomic scales.Linking various microscopic and spectromicroscopic instru-ments together,this workflow consists of six steps:(1)single-particle selection with non-destructive μXRF technique,(2)2D/3D morphological and structural characterization with a correlative submicron 3D XRM and nanoscale resolution FIB-SEM imaging methods,(3)SEM analysis of the surface morphology and chemistry of the selected particle,(4)a series of microscopic and microbeam analyses(e.g.,SEM,electron probe microanalysis,and SIMS)on the cross-section of the selected particle to obtain structural,mineralogical,chemical,and isotopic features from the micron to nanometer scale,(5)advanced 2D/3D characterization and site-specific sample preparation of thin foil/tip specimens on a microregion of inter-est in the selected particle with FIB-SEM technique,and(6)comprehensive analyses on the FIB-milled specimens at nanometer to atomic scale with synchrotron-based scanning transmission X-ray micro-scopy,analytic transmission electron microscopy,and atom probe tomography.Following this technical roadmap,one can integrate multiple modalities into a uniform frame of multimodal and multiscale cor-related datasets to acquire high-throughput information on the limited or precious terrestrial and extraterrestrial samples. | Jin-Hua Li Qiu-Li Li Liang Zhao Jin-Hai Zhang Xu Tang Li-Xin Gu Qian Guo Hong-Xia Ma Qin Zhou Yan Liu Pei-Yu Liu Hao Qiu Gang Li Lin Gu Shun Guo Chun-Lai Li Xian-Hua Li Fu-Yuan Wu Yong-Xin Pan | 2022 | Geoscience Frontiers2022，13，3： | 1 |
| 9 | Nanogeology in China:A review显示文摘Nanogeology is a subject that is a combination of geology and nanoscale science,and it has been a frontier field in recent years.It is also a new subject with the features of intersectionality and multidisciplinary. Digging deeper into geological problems and nanoscale phenomena helps better revealing the more essential mechanisms and processes in geological science,which is also an evitable path in the development of geology.In this paper,we elaborate the concept,feature and main subdisciplines,and summarize three stages ofnanogeology development from preliminary research in the 1990s to subject formation in China.After summarizing the researchers'achievements in this field,we illustrate some primary research progresses of nanogeology in China as eight subdiseiplines.On the basis of the above content,we propose the development prospect of nanogeology in China.There are many geologic problems with scientific values and economic benefits,such as research of geologic fundamental problems,resource exploration and development,mechanism study and prediction of geological activities (disasters),mechanism research and management of environmental pollution and others.Nanogeology has a great potential in China to solve all of these problems.As a result,the theories and methods of nanogeology will become enriching and advanced.It offers important theoretical basis and technological methods to deal with major issues concerning the national economy and the people's livelihoods,such as the prediction of geological activities,as well as resource dislribution and its exploration and utilization. | Yi-wen Ju Cheng Huang Yan Sun Cai-neng Zou Hong-ping He Quan Wan Xue-qiu Wang Xian-cai Lu Shuang-fang Lu Jian-guang Wu Hong-tai Chao Hai-ling Liu Jie-shan Qiu Fei Huang Hong-jian Zhu Jian-chao Cai Yue Sun | 2018 | China Geology2018，1，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员