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| 1 | 内蒙古中部四子王旗大庙岩体时代及成因显示文摘华北北缘的内蒙古中部地区出露大量晚古生代-早中生代花岗岩类,在空间上构成一条巨大的东西向花岗岩带。四子王旗大庙岩体作为一个典型的代表,以花岗闪长岩为主,其内部普遍发育暗色微粒包体(MMEs),是认识花岗岩岩石成因和演化的关键。本文对包体及寄主岩进行了同位素测年、岩相学、矿物化学、全岩主量元素和微量元素分析。寄主岩石中的锆石LA-ICPMS U-Pb年龄平均为265±7Ma(2σ),包体中单颗粒黑云母Rb-Sr年龄为253±5Ma(MSWD=0.85),属晚二叠世-早三叠世岩浆活动的产物。包体具塑性外形及岩浆结构,存在多种不平衡矿物组合;MME中的斜长石An组分及黑云母斑晶中MgO成分呈多期震荡,同时总体上均显示出幔部高于核、边部的特征,暗示斑晶可能为围岩捕虏晶,这种相似的成分变化指示包体与寄主岩相互作用引起的结晶环境改变,标志着岩浆成分的变化,是岩浆混合的标志之一;主量和微量数据进一步证明岩体的岩浆混合成因。Rb/Sr-K/Rb变化关系反映包体非结晶分异或黑云母堆晶的产物,而Ce/Pb-Ce、Ba-δEU和P_2O_5-δEu图及其他微量元素比值图等均表明花岗闪长岩体发生了岩浆混合作用,这也得到岩浆物理化学条件的支持。岩浆底侵和岩浆混合作用是该区岩体形成的主要机制和方式。岩石地球化学特征表明该岩体不同于加厚地壳和俯冲洋壳熔融的TTG和埃达克质岩石,而黑云母矿物化学和岩石地球化学显示其构造背景很可能为同碰撞环境。 | 章永梅 张华锋 刘文灿 周志广 | 2009 | 岩石学报2009，25，12： | 63 |
| 2 | Framework and evolution of the middle Paleozoic orogenic belt between Siberian and North China Plates in northern Inner Mongolia显示文摘A middle Paleozoic subduction-collision orogenic belt between the Siberian and North China Plates has been recognized in Xilinhot-the south of Sonid Left Banner-Erdaojing area, northern Inner Mongolia, China. It comprises five subunits: melange belt, foreland deformation belt, molasse and littoral basin, arc diorite series and syn-collision granitoid series. Evolution history of the orogenic belt can be divided into subduction stage (500-400 Ma) and collision stage (400-320 Ma). The formation of the orogenic belt caused the convergence between the Siberian and North China Plates during the late Devonian. Suture zone corresponding to the melange belt extends from Erdao-jing, Qagan Ura to Honggor. | 徐备 陈斌 | 1997 | Science China Earth Sciences1997，40，5： | 63 |
| 3 | Patterns of above-and belowground biomass allocation in China's grasslands:Evidence from individual-level observations显示文摘Above-and belowground biomass allocation not only influences growth of individual plants,but also influences vegetation structures and functions,and consequently impacts soil carbon input as well as terrestrial ecosystem carbon cycling.However,due to sampling difficulties,a considerable amount of uncertainty remains about the root:shoot ratio(R/S),a key parameter for models of terrestrial ecosystem carbon cycling.We investigated biomass allocation patterns across a broad spatial scale.We collected data on individual plant biomass and systematically sampled along a transect across the temperate grasslands in Inner Mongolia as well as in the alpine grasslands on the Tibetan Plateau.Our results indicated that the median of R/S for herbaceous species was 0.78 in China's grasslands as a whole.R/S was significantly higher in temperate grasslands than in alpine grasslands(0.84 vs.0.65).The slope of the allometric relationship between above-and belowground biomass was steeper for temperate grasslands than for alpine.Our results did not support the hypothesis that aboveground biomass scales isometrically with belowground biomass.The R/S in China's grasslands was not significantly correlated with mean annual temperature(MAT) or mean annual precipitation(MAP).Moreover,comparisons of our results with previous findings indicated a large difference between R/S data from individual plants and communities.This might be mainly caused by the underestimation of R/S at the individual level as a result of an inevitable loss of fine roots and the overestimation of R/S in community-level surveys due to grazing and difficulties in identifying dead roots.Our findings suggest that root biomass in grasslands tended to have been overestimated in previous reports of R/S. | WANG Liang*,NIU KeChang,YANG YuanHe & ZHOU Peng Department of Ecology,Key Laboratory for Earth Surface Processes of the Ministry of Education,Peking University,Beijing 100871,China. | 2010 | Science China(Life Sciences)2010，53，7： | 54 |
| 4 | Early Paleozoic subduction of the Paleo-Asian Ocean: Geochronological and geochemical evidence from the Dashizhai basalts, Inner Mongolia显示文摘Zircon U-Pb results of basalt from the Dashizhai Town in Inner Mongolia, NE China, shows that the basaltic lava was erupted at 439±3 Ma, much older than the 'Permian basalts' as previously thought. These rocks show arc-type trace element patterns (i.e., Nb-Ta depletion and light REE and large ion lithophile element enrichment) and unradiogenic Sr and highly radiogenic Nd and Hf isotope compositions. They can be subdivided into two petrogenetic groups: Group 1 basalts have relatively high TiO2, MgO and compatible elements and low Sr and Th, characterized by mid-oceanic ridge basalt (MORB)-type Sr-Nd-Hf isotope compositions (87Sr/86Sr(i)=0.7028―0.7032, εNd(t)=+9.8-+11.2, εHf(t)=+16.1- +18.4). Group 2 has lower TiO2, MgO and compatible elements and higher Sr and Th, and relatively evolved Sr-Nd-Hf isotope compositions (87Sr/86Sr(i)=0.7037-0.7038, εNd(t)=+5.7-+7.3, εHf(t)=+12.6- +13.0). Both groups were interpreted as melts derived from a metasomatized mantle wedge formed during the subduction of Paleo-Asian Ocean. The mantle source for Group 1 was probably a highly isotopically depleted oceanic mantle modified by predominant slab fluids; whereas subducted sediments had an important contribution to the melting source for Group 2. The petrogenesis of the Dashizhai basalts provides clear evidence for early Paleozoic subduction of the Paleo-Asian Ocean, and the highly radiogenic Nd and Hf compositions in these rocks suggest that these lavas and their possible intrusive counterparts were one of the important components for Phanerozoic crustal growth. Our and previous studies on the 'Dashizhai Formation' volcanic rocks yield an unrealistic eruption range of 440-270 Ma for different rock types, we thus advise to disassemble the previously defined 'Dashizhai Formation' into multiple lithologic units and to reinterpret the spatial and temporal distributions of different volcano-sedimentary associations. | GUO Feng FAN WeiMing LI ChaoWen MIAO LaiCheng ZHAO Liang | 2009 | Science China Earth Sciences2009，52，7： | 37 |
| 5 | A nearly completely articulated rhamphorhynchoid pterosaur with exceptionally well-preserved wing membranes and 'hairs' from Inner Mongolia, northeast China显示文摘We report a new and nearly completely articu-lated rhamphorhynchoid pterosaur, Jeholopterus ningchen-gensis gen. et sp. nov., with excellently preserved fibres in the wing membrane and 'hairs' in the neck, body and tail re-gions. Many of its characteristics such as a short neck, short metacarpals and distinctively long fifth pedal digit are char-acteristic of rhamphorhynchoids. The new species can be further referred to the ’strange’ short-tailed rhamphorhyn-choid family Anurognathidae. It is much more complete than the other known members of the family, namely, Anurog-nathus from Solnhofen, Germany, Batrachognathus from Karatau, Kazakhstan, and Dendrorhynchoides from Beipiao, Liaoning Province, China. The new pterosaur also shows that the wing membrane is attached to the ankle of the hind limb. The pedal digits are webbed. Furthermore, the 'hair' of Jeholopterus bears some resemblance to the hair-like in-tegumental structures of the feathered dinosaur Sinosaurop-teryx although there is yet no direct | Xiaolin Wang Zhonghe Zhou Fucheng Zhang Xing Xu | 2002 | Chinese Science Bulletin2002，47，3： | 37 |
| 6 | Spatiotemporal dynamics of aboveground primary productivity along a precipitation gradient in Chinese temperate grassland显示文摘Investigating the spatial and temporal variance in productivity along natural precipitation gradients is one of the most efficient approaches to improve understanding of how ecosystems respond to climate change. In this paper, by using the natural precipitation gradient of the Inner Mongolian Plateau from east to west determined by relatively long-term observations, we analyzed the temporal and spatial dynamics of aboveground net primary productivity (ANPP) of the temperate grasslands covering this region. Across this grassland transect, ANPP increased exponentially with the increase of mean annual precipitation (MAP) (ANPP=24.47e0.005MAP, R2=0.48). Values for the three vegetation types desert steppe, typical steppe, and meadow steppe were: 60.86 gm-2a-1, 167.14 gm-2a-1 and 288.73 gm-2a-1 respectively. By contrast, temperature had negative effects on ANPP. The moisture index (K ), which takes into ac- count both precipitation and temperature could explain the spatial variance of ANPP better than MAP alone (ANPP=2020.34K1.24, R2=0.57). Temporally, we found that the inter-annual variation in ANPP (cal- culated as the coefficient of variation, CV) got greater with the increase of aridity. However, this trend was not correlated with the inter-annual variation of precipitation. For all of the three vegetation types, ANPP had greater inter-annual variation than annual precipitation (PPT). Their difference (ANPP CV/PPT CV) was greatest in desert steppe and least in meadow steppe. Our results suggest that in more arid regions, grasslands not only have lower productivity, but also higher inter-annual variation of production. Climate change may have significant effects on the productivity through changes in precipitation pattern, vegetation growth potential, and species diversity. | HU ZhongMin FAN JiangWen ZHONG HuaPing YU GuiRui | 2007 | Science China Earth Sciences2007，50，5： | 23 |
| 7 | 内蒙古东北地区上古生界伊利石研究显示文摘内蒙古东北地区上古生界主要是一套泥质岩石,其详细深入的矿物学工作尚不多见。本文利用JSM-6700F场发射电镜及INCA能谱仪,探讨了伊利石在成岩-极低级变质作用过程中的行为。采用D/max-2500 X-射线衍射仪,研究了伊利石的结晶度、多型和b_0值。伊利石结晶度变化于0.28~0.77,除去构造应力对伊利石结晶度指数值的影响,研究区伊利石结晶度指数应>0.34,反映晚古生代地层主体属于晚期成岩带和低级近变质带。伊利石(白云母)多型分三种类型,分别是1M_d型、1M_d+2M_1混合型和2M_1型,是晚期成岩带和低级近变质带的产物。伊利石(白云母)b_0值变化于8.9892A~9.0404A之间,b_0平均值9.0196A,属中压相。 | 胡大千 于介江 | 2009 | 岩石学报2009，25，8： | 14 |
| 8 | Tracking desertification on the Mongolian steppe through NDVI and field-survey data显示文摘Changing environmental and socio-economic conditions make land degradation,a major concern in Central and East Asia.Globally satellite imagery,particularly Normalized Difference Vegetation Index(NDVI)data,has proved an effective tool for monitoring land cover change.This study examines 33 grassland water points using vegetation field studies and remote sensing techniques to track desertification on the Mongolian plateau.Findings established a significant correlation between same-year field observation(line transects)and NDVI data,enabling an historical land cover perspective to be developed from 1998 to 2006.Results show variable land cover patterns in Mongolia with a 16%decrease in plant density over the time period.Decline in cover identified by NDVI suggests degradation;however,continued annual fluctuation indicates desertificationirreversible land cover changehas not occurred.Further,in situ data documenting greater cover near water points implies livestock overgrazing is not causing degradation at water sources.In combination of the two research methodsremote sensing and field surveysstrengthen findings and provide an effective way to track desertification in dryland regions. | Troy Sternberg Renchin Tsolmon Nicholas Middleton David Thomas | 2011 | International Journal of Digital Earth2011，4，1： | 11 |
| 9 | 内蒙古太平沟钼矿床流体包裹体特征及成矿动力学背景显示文摘太平沟斑岩型钼矿床位于大兴安岭北段,处于东西向古生代古亚洲构造成矿域和北北东向中新生代滨西太平洋构造成矿域的转换、叠合部位。该矿床形成于131.5~127.5Ma,是大陆内部构造-岩浆活化的产物,成矿系统发育于早白垩世初期华北及中国东部构造体制由挤压向伸展转变的背景下。太平沟钼矿的流体成矿过程包括早、中、晚3个阶段,分别以石英-黄铜矿-黄铁矿、石英-黄铁矿-辉钼矿和石英-碳酸盐组合为特征。石英中发育水溶液型、含/富CO_2型和含子矿物型流体包裹体,子矿物包括石盐、黄铜矿等,但晚阶段仅发育水溶液型包裹体。成矿早、中、晚各阶段流体包裹体的均一温度分别集中在320~390℃、240~320℃和140~200℃,盐度变化为从>66.8 wt%NaCl eqv.、2.4 wt%~33.8 wt%NaCl eqv.到<10 wt%NaCl eqv.。流体系统由早阶段的高温、高盐度、富CO_2的岩浆热液,经流体沸腾、CO_2逸失、温度降低等过程导致大量金属硫化物沉淀,演化为晚阶段低温、低盐度、贫CO_2的大气降水热液。 | 王建国 张静 王圣文 张达 祁小军 吴淦国 赵丕忠 | 2009 | 岩石学报2009，25，10： | 11 |
| 10 | Daily variation characteristics of CO2 emission fluxes and contributions of environmental factors in semiarid grassland of Inner Mongolia, China显示文摘Fixed field experimental studies are carried out on daily variations of the undis- turbed community and soil respiration fluxes in different phenological phases of 2001―2002 in semiarid Aneurolepidium chinense steppe of Inner Mongolia, China using static black chamber method. Corresponding statistical analysis of the contributions of the water-heat factors (air temperature, ground temperature, surface soil water content) and ecological factors (above- ground biomass, underground biomass, litter biomass) to daily variation law of the undisturbed community and soil respiration fluxes as well as differences in daily respiration are also con- ducted. The results indicate that undisturbed community and soil respiration have apparent daily variation laws, daily variation patterns of respiration fluxes during different phenological phases are basically the same, and the variations of environmental factors only exert effect on CO2 emission intensities, while the effect on daily variation pattern of grassland CO2 emission fluxes is relatively small. The daily total respiration of the undisturbed community in different phenological phases ranges from 1.34―10.13 g·m?2; soil daily total respiration ranges from 0.98―5.17 g·m?2; both daily variations of undisturbed community and soil respiration fluxes are significantly corre- lated (p < 0.05) or extremely significantly correlated (p < 0.01) with air temperatures and ground surface temperatures, but the correlativity with the soil temperature at 5 and 10 cm depths is relatively weak; multiple regression analysis indicates that about 80% of the difference in daily respiration of the undisturbed community among different phenological phases is induced by the variation of the aboveground biomass, while the variations of the remaining factors can jointly explain around 20% of the daily respiration variations of the whole grassland ecosystem; about 83% of the soil daily respiration variation of the different phenological phases is caused by 0―20 cm underground biomass. Besides, surface soil water content is also an important environmental factor affecting soil daily respiration variations of the Aneurolepidium chinense steppe, but its partial correlation coefficient with soil daily respiration amount does not reach the significance level of 0.05. | QI Yuchun DONG Yunshe LIU Jiyuan GENG Yuanbo LI Mingfeng YANG Xiaohong LIU Lixin | 2005 | Science China Earth Sciences2005，48，7： | 11 |
| 11 | Quantitative Analysis of the Coupling Coordination Degree Between Urbanization and Eco-environment in Mongolia显示文摘Mongolia is an important country in the Economic Corridor of China-Mongolia-Russia, a deep understanding of the coupling relationship between urbanization and the eco-environment in Mongolia is meaningful to achieve green development of the Belt and Road. The entropy method and coupling coordination degree model were integrated to evaluate the coupling coordination degree between urbanization and the eco-environment in Mongolia during 2000-2016. The results showed that the coupling coordination degree between urbanization and the eco-environment in Mongolia was generally at the stage of seriously unbalanced development, and that the main contributor of the urbanization and the eco-environment subsystem were demographic urbanization and eco-environment endowment, respectively. The southern part of Mongolia central zone should be paid more attention due to the lower degree of coupling coordination between urbanization and the eco-environment. To promote the healthy urbanization development in Mongolia, six-layer eco-city establishing green development pattern is proposed to provide scientific support for Mongolia. | DONG Suocheng ZHENG Ji LI Yu LI Zehong LI Fujia JIN Liang YANG Yang BILGAEVAlexey | 2019 | Chinese Geographical Science2019，29，5： | 6 |
| 12 | New discovery of Palaeontinid fossils from the Middle Jurassic in Daohugou, Inner Mongolia (Homoptera, Palaeontinidae)显示文摘Three new species of fossil Palaeontinidae are described from Daohugou Village, Inner Mongolia, China: Daohugoucossus shii sp. nov., D. parallelivenius sp. nov., D. lii sp. nov. The diagnosis of Dao- hugoucossus Wang, Zhang and Fang, 2006 is revised. These materials are the first complete fossil palaeontinids in the Middle Jurassic of the world. Based on observation of these new specimens, Sc of this new genus has the following combined characters: joined with R at base, diverged near M separa- tion, coalesced with R before the nodal line, extended beyond the nodal line and fused with R1 before distal end. Due to the Sc characteristics mentioned above, the genus Liaocossus Ren, Yin and Dou, 1998 can be well distinguished from “Ilerdocossus-complex”. | SHIH ChungKun | 2007 | Science China Earth Sciences2007，50，4： | 5 |
| 13 | Early Mesozoic mantle-crust transitional zone in eastern Inner Mongolia: Evidence from measurements of compressional velocities of xenoliths at high pressure and high temperature显示文摘Compression wave velocity Vp has been measured on 10 representative rock samples from the Early Mesozoic granulite and mafic-ultramafic cumulate xenoliths population from the Harqin area of the Inner Mongolia Autonomous Region (for short Inner Mongolia) as an aid to interpreting in-situ seismic velocity data and investigating velocity variation with depth in a mafic lower crust. The experiments have been carried out at constant confining pressures up to 1 000 MPa and temperatures ranging from 20 to around 1 300℃, using the ultrasonic transmission technique. After corrections for estimated in situ crustal pressures and temperatures, elastic wave velocities range from 6.5 to 7.4 km · s-1, indicating that they are components of the Early Mesozoic crust-mantle transitional zone. Combining with previous experimental data, we have also reestablished the Early-Mesozoic continental compression velocity profile and compared it with those of the present and of the different tectonic environments in the world. | 邵济安 韩庆军 | 2000 | Science China Earth Sciences2000，43，S1： | 5 |
| 14 | 内蒙古旧石器时代考古简史显示文摘内蒙古自治区幅员辽阔.宜耕宜牧,适宜人类生存繁衍,史前的先民们在这里创造了丰富多彩的物质文化,远在旧石器时代就遗留下丰富的考古遗存. | 王晓琨 | 2008 | 内蒙古文物考古2008，，2： | 4 |
| 15 | PALYNOLOGICAL RECORD OF PALEOVEGETATIONCHANGE DURING HOLOCENE AT NORTH TUMDPLAIN IN INNER MONGOLIA,CHINA显示文摘In this paper, the Holocene paleoenvironment change sequence in middle Inner Mongolia was primarily reconstructed on the basis of palynological analysis at the resolution of 70 years on a peat profile, which was located in thenorthern part of Tumd Plain with its oldest age of 9100 a. B. P. As the consequence indicated, the Holocene climatechange in the middle Inner Mongolia had undergone cool→temperate→ warm→ temperate→ cool series, and the historycould be divided into 5 epochs: 9100 - 7400 a B. P., with slightly arid and cold climate; 7400 - 5000 a B. P., transitoryclimate with dynamic fluctuation, earlier period temperate and slightly arid, and later period temperate and slightly humid; 5000 - 4100 a B. P., with warm and humid climate; 4100 - 1350 a B. P., with transitory climate getting arid, asthe result of human being’s growing influence; 1350 a B. P. - present, with temperate and slightly arid climate, understrong influence of human being. The warm period of Holocene occurred in 7400 - 4000 a B. P., while the optimal periodoccurred in 5000 - 4100 a B. P. | 王瑜 宋长青 孙湘君 | 1999 | Chinese Geographical Science1999，9，1： | 4 |
| 16 | Geochemical Characteristics and Geological Significance of Meta-Volcanic Rocks of the Bainaimiao Group, Sonid Right Banner, Inner Mongolia, China显示文摘The Bainaimiao Group, which crops out in the Sonid Right Banner area of Inner Mongolia, China, comprises mainly metamorphosed volcano-sedimentary rocks. This group can be divided into two formations: a lower formation characterized by intermediate-felsic volcanic rocks, and an upper formation of intermediate-mafic volcanic rocks. Zircon dating indicates that biotite leptynite from the lower formation and chlorite-sericite schist from the upper formation crystallized at 499±2 and 478±2 Ma, respectively, corresponding to different volcanic events. Meta-volcanic rocks of the Bainaimiao Group belong to the calcalkaline series, and the SiO2 concentrations suggest that their protoliths were mainly basalts and rhyolites. Greenschist rocks of the group are enriched in light rare earth elements(LREEs) relative to heavy rare earth elements(HREEs), with(La/Yb)N ratios of 3.08–10.9. In addition, they are enriched in large-ion lithophile elements, including Rb, Ba and K, and depleted in the high-field-strength elements Nb, Ta and Ti. The felsic meta-volcanic rocks also exhibit relative enrichments in LREEs compared with HREEs, with high(La/Yb)N ratios of 2.92–9.89, and are enriched in Rb, Ba, Zr and Hf, and depleted in Sr, Nb and Ta. These geochemical characteristics indicate that the meta-basic volcanic rocks were originated from partial melting of sub-arc mantle wedge that had been previously metasomatized by subducted-slab-derived fluids, whereas the meta-felsic volcanic rocks were generated by partial melting of continental crust. These results suggest that the meta-volcanic rocks of the Bainaimiao Group are the products of oceanic plate subduction magmatism along an active continental margin, which can be attributed to Early Paleozoic subduction of the PaleoAsian Ocean plate beneath the northern margin of the North China Craton. | Chao Zhang Jingyu Quan Zhenghong Liu Zhongyuan Xu Xuejiao Pang Yujin Zhang | 2019 | Journal of Earth Science2019，30，2： | 4 |
| 17 | Application of the Levenberg-Marquardt Method in Improving Technology of the Seismic Influence Field显示文摘Attenuation relation of seismic intensity is fitted by using 152 complete isoseismic lines from65 earthquakes which were greater than MS4. 0 from 1940 to 2015 in Inner Mongolia and neighboring regions. Meanwhile,based on the difference of land form and geological structure characteristics,the study area is the divided into eastern,western and central.The intensity attenuation relationships are established separately by using the LM( Levenberg-Marquardt) method and elliptic attenuation model. Comparisons are made by using the earthquake affecting field model of North China and computed results. The analytical study shows that the relation obtained represents the features of earthquake damage distribution in the areas well,and has positive meaning to guide loss assessments immediately after a destroyed earthquake. | Yang Yanming Jiang Lixin Wang Zhenxiang | 2018 | Earthquake Research in China2018，32，3： | 4 |
| 18 | Discovery of Wolitu Pb-Zn deposit through geochemical prospecting under loess cover in Inner Mongolia, China显示文摘We report the finding of the Wolitu Pb-Zn deposit in Inner Mongolia, China, through a series of geochemical surveys. The Wolitu area, located in the loess-cover area in the Hure Banner, Tongliao City,Inner Mongolia, and neighboring the Horqin Sandy Land to the north, had no previous history of Pb-Zn mining or record of Pb-Zn mineralization. Our study identified a large Pb-Zn anomaly with potential zones of mineralization by stream sediment survey. Random rock sampling reveals limonitization at sporadic outcrops in the gullies. The high concentrations of Pb in the residual debris provided guidelines to fix the position for exploratory trench. Oxidized concealed orebodies were identified by trenching.Blind orebodies in veins hosted within the structural zone between slates and marbles of the upper Carboniferous Shizuizi Formation and the Permian granite were discovered by drilling. It is computed that the ore reserve may reach up to 540,000 tones with Pb grade of 1.27% and Zn of 1.9%. This case study is an excellent example for identifying potential polymetallic deposits in loess covered terrains using geochemical exploration. | Fan Yang Mu Kong Huazhong Liu Jinsong Yu Shaoping Yang Zhihong Hao Dehui Zhang Kuang Cen | 2017 | Geoscience Frontiers2017，8，5： | 3 |
| 19 | 内蒙古地区壁画保护修复的回顾与展望显示文摘中国古代壁画艺术是中华民族文化遗产的重要组成部份,具有悠久的历史、深邃的文化内涵和独特的艺术风格.在内蒙古东西绵延数千里的辽阔草原上,壁画资源丰富.墓室壁画、石窟壁画、召庙壁画三大类型,构建了内蒙古明艳多彩、风格迥异、独具民族特色的壁画艺术宝库. | 杜晓黎 | 2010 | 内蒙古文物考古2010，，1： | 3 |
| 20 | The role of carbonate-fluoride melt immiscibility in shallow REE deposit evolution显示文摘The Lugiin Gol nepheline syenite intrusion, Mongolia, hosts a range of carbonatite dikes mineralized in rare-earth elements(REE). Both carbonatites and nepheline syenite-fluorite-calcite veinlets are host to a previously unreported macroscale texture involving pseudo-graphic intergrowths of fluorite and calcite. The inclusions within calcite occur as either pure fluorite, with associated REE minerals within the surrounding calcite, or as mixed calcite-fluorite inclusions, with associated zirconosilicate minerals. Consideration of the nature of the texture, and the proportions of fluorite and calcite present(~29 and 71 mol%,respectively), indicates that these textures most likely formed either through the immiscible separation of carbonate and fluoride melts, or from cotectic crystallization of a carbonatefluoride melt. Laser ablation ICP-MS analyses show the pure fluorite inclusions to be depleted in REE relative to the calcite. A model is proposed, in which a carbonate-fluoride melt phase enriched in Zr and the REE, separated from a phonolitic melt, and then either unmixed or underwent cotectic crystallization to generate an REE-rich carbonate melt and an REE-poor fluoride phase. The separation of the fluoride phase(either solid or melt) may have contributed to the enrichment of the carbonate melt in REE, and ultimately its saturation with REE minerals. Previous data have suggested that carbonate melts separated from silicate melts are relatively depleted in the REE, and thus melt immiscibility cannot result in the formation of REE-enriched carbonatites. The observations presented here provide a mechanism by which this could occur, as under either model the textures imply initial separation of a mixed carbonate-fluoride melt from a silicate magma. The separation of an REEenriched carbonate-fluoride melt from phonolitic magma is a hitherto unrecognized mechanism for REE-enrichment in carbonatites, and may play an important role in the formation of shallow magmatic REE deposits. | Jindrich Kynicky Martin P.Smith Wenlei Song Anton R.Chakhmouradian Cheng Xu Antonin Kopriva Michaela Vasinova Galiova Martin Brtnicky | 2019 | Geoscience Frontiers2019，10，2： | 3 |
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