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| 1 | Geochronologic constraints on magmatic intrusions and mineralization of the Zhunuo porphyry copper deposit in Gangdese,Tibet显示文摘In situ zircon U-Pb ages for the recently discovered Zhunuo porphyry copper deposit in the western part of the Gangdese metallogenic belt in Tibet were determined by sensitive high-resolution ion mi-croprobe(SHRIMP) . The ages can be divided into two separate groups,reflecting more than four major tectono-magmatic events in the area. The 62.5±2.5 Ma age of inherited zircons may be related to the volcanic eruption of the Linzizong Group formed shortly after the India-Asia continental collision. The 50.1±3.6 Ma age most likely corresponds to the time of underplating of mantle-derived mafic magma in Gangdese. The 15.6±0.6 Ma age obtained from magmatic zircons is interpreted as the age of crystalli-zation of the Zhunuo ore-forming porphyry. Finally,a molybdenite Re-Os isochron age of 13.72±0.62 Ma is consistent with another zircon U-Pb age of 13.3 ±0.2 Ma,representing the time of copper mineraliza-tion. These ages,in combination with available literature data,indicate that magmatic crystallization and copper mineralization in the Gangdese metallogenic belt became gradually younger westward,and further suggest that the Zhunuo porphyry copper deposit was formed in the same tectonic stage as other porphyry copper deposits in the eastern and central Gangdese belt. This conclusion provides critical information for future exploration of porphyry copper deposits in western Gangdese. | ZHENG YouYe ZHANG GangYang XU RongKe GAO ShunBao PANG YingChun CAO Liang DU AnDao SHI YuRuo | 2007 | Chinese Science Bulletin2007，52，22： | 17 |
| 2 | Sequence Stratigraphy of the Permian--Triassia Boundary Section of Changxing, Zhejiang, Southern China显示文摘Three third-order sequences and about one hundred high-frequency cycles or Milankovitchcycles within the Late Permian Changxingian to Early Triassic Griesbachian are identified in theMeishan Section of Changxing, Zhejiang Province, southern China, the candidate stratotype sec-tion of the global Permo-Triassic boundary, based on a detailed study of the biological,ecological and high-resolution allochthonous cyclic events, microfacies and depositional systems.Furthermore, the stacking pattern of the depositional systems across various Changxingian andGriesbachian sedimentary facies of the Lower Yangtze and the sequence stratigraphic frameworkare outlined with the Meishan section as the principal section. In this paper the habitat types offossil biota are applied to semiquantitative palaeobathymetry and the study of relative sea levelchanges. | Zhang Kexin Tong Jinnan Yin Hongfu and Wu Shunbao China University of Geosciences, Wuhan, Hubei | 1997 | Acta Geologica Sinica(English Edition)1997，71，1： | 14 |
| 3 | Geochemistry and Geochronology of the Gebunongba Iron Polymetallic Deposit in the Gangdese Belt, Tibet显示文摘The Gebunongba iron polymetallic deposit is a typical skarn deposit located at the westernmost end of the discovered iron polymetallic deposits in the Gangdese metallogenic belt. Major and trace elements of the monzonite granite related to mineralization show that these rocks are peraluminous(ACNK=1.15–1.21) and are rich in Si(76.63 wt.%–76.93 wt.% SiO2), K(K2 O/Na2 O ratio of 1.80–2.30), LREE and LILEs(Rb, Ba, Th, U, Pb), but is depleted in high field strength elements(Nb, Ta, Ti and HREE). In addition, these rocks show obviously negative Eu anomalies(δEu=0.48–0.55). The LA-ICPMS U-Pb age of zircons in monzonite granite is 59.72±0.55 Ma(MSWD=0.79), whereas the 40 Ar/39 Ar age of muscovite in iron ores is 59.22±0.61 Ma(MSWD=16.20). This indicates that the deposit formed at the syn-collision stage of Lhasa-India terrane is later than the northward subduction of the Yajiang crust. The monzonite granite has been probably derived from the partial melting of ancient lower crustal materials, which is probably resulted from the underplating of mantle-derived magmas. It is favorable for the formation of iron polymetallic deposit. Iron polymetallic mineralization is prevalent in Gangdese metallogenic belt at syn-collision stage. Therefore, syn-collision stage is an important mineralization stage for iron polymetallic deposits. The results of this study proved that iron polymetallic mineralization still took place in the western segment of Gangdese metallogenic belt and provided basis for further prospecting the deposits of the same type. | Shunbao Gao Youye Zheng Junsheng Jiang Kan Tian Jin Xu | 2019 | Journal of Earth Science2019，30，2： | 3 |
| 4 | Suggestion of Meishan Section as GlobalStratotype Section and Point (GSSP) of Permian-Triassic Boundary显示文摘ThisdatumwasobtainedfromthetopIcmofthe6cmthickBed3,whereasthedatum0.40isthemeanvalueof6samplesofBed26.TABLE3SUCCESSIONOFTHEPTBMARKERStogetherwithunevenlydistributCdirspikeareheresuggestedasauxiliarymarkersoftheboundary.Significanceofthechemicalanomalieswillbefurtherdiscussedintheparagraphofeventostratigraphy.EVENTOgyRATIGRAPHYACROSSTHEPTBOFMEISnANVolcedcEventThe'WhiteClay'orBed25iscomposedofinterbedsofilliteandaxxedmontmorillonite--illitelayerswithsubordinatekaolinite.The'BlackClay'orBed26isofmixedmontmori? | Yin Hongfu Wu Shunbao Ding Meihua Zhang Kexin Tong Jinnan Yang Fengqing(Faculty of Earth Sciences,China University of Geosciences, Wuhan 430074) | 1995 | Journal of Earth Science1995，14，1： | 3 |
| 5 | Multifractal Analysis of Geochemical Stream Sediment Data in Bange Region, Northern Tibet显示文摘The aim of this study is to quantify the geochemical elements distribution patterns analyzed from stream sediment data and then to delineate favorable areas for mineral exploration. A total of 7 270 stream sediment samples were collected from four subareas and 37 rock(ore) chip samples from five different locations in the Bange region, northern Tibet(China). The multifractal spectra of 12 elements including Au, Ag, As, Cu, Mo, Pb, Zn, W, Sn, Bi, Sb and Hg are represented by the method of moments, and characterized by five quantitative multifractal parameters. The results show that the multifractality for Cu and Bi in the Gongma area is much stronger than those in other subareas. Both the asymmetry index of multifractal spectra and the variance coefficients of Cu and Bi in this area are the highest, which imply that the distribution pattern of Cu and Bi in the Gongma area is the most heterogeneous. These multifractal parameters indicate that the Gongma area is the most favorable for prospecting Cu and Bi. The results obtained by the method of moments are in agreement with petrochemical analysis and field observation. It is suggested that multifractal analysis can be used as an effective tool to evaluate the ore-forming potential in the study area and to provide new approaches for geochemical exploration. | Xianzhong Ke Shuyun Xie Youye Zheng Salah Fadlallah Awadelseid Shunbao Gao Liming Tian | 2015 | Journal of Earth Science2015，26，3： | 3 |
| 6 | Scale effect and methods for accuracy evaluation of attribute information loss in rasterization显示文摘Rasterization 是伴有信息损失的一个变换过程,它包括特征形状的损失,结构,位置,属性等等。假装在 rasterization 估计属性精确性损失的二个主要因素是格子房间尺寸和评估方法。也就是说,在 rasterization 的属性精确性损失与格子房间尺寸有一种靠近的关系;而且,它被评估方法也影响。因此,分析这二是重要的包括地影响因素。作为一个盒子在 2005 在 1:250,000 的规模拿四川的陆地盖子数据,鉴于数据体积和它学习区域的处理时间,这研究从 600 m 选择 16 空间规模到 30 km ,在 ArcGIS 和属性精确性损失的二评估方法基于最大的区域( RMA )的规则使用 rasterizing 方法,它是正常分析方法( NAM )和分别地,基于格子房间( MBGC )的一个新方法并且分析属性的规模效果(它是这里的区域)在 1 点的精确性损失结果显示出那:(1 ) 在一样可伸缩, MBGC 评估的全部学习区域的平均区域精确性损失比用 NAM 估计的那显著地大。而且,在二之间的这差异在到 10 km 的 1 km 的范围是明显的。当格子房间比 10 km 大时,平均区域精确性损失在二计算了评估方法是稳定的,甚至趋于到平行。(2 ) MBGC 不能仅仅精确地估计 RMA rasterization 属性精确性损失,但是能客观地表示损失的空间分发。( 3 )为在在 2005 的 1:250,000 的规模的四川的陆地盖子数据的 RMA rasterization 的合适的规模域更好平等者到或不到 800 m ,数据卷在是有利的和处理时间不太长,象区域精确性一样,损失是不到2.5%。 | BAI Yan LIAO Shunbao SUN Jiulin | 2011 | Journal of Geographical Sciences2011，21，6： | 2 |
| 7 | Errors Prediction for Vector-to-Raster Conversion Based on Map Load and Cell Size显示文摘Vector-to-raster conversion is a process accompanied with errors.The errors are classified into predicted errors before rasterization and actual errors after that.Accurate prediction of the errors is beneficial to developing reasonable rasterization technical schemes and to making products of high quality.Analyzing and establishing a quantitative relationship between the error and its affecting factors is the key to error prediction.In this study,land cover data of China at a scale of 1:250 000 were taken as an example for analyzing the relationship between rasterization errors and the density of arc length(DA),the density of polygon(DP) and the size of grid cells(SG).Significant correlations were found between the errors and DA,DP and SG.The correlation coefficient(R2) of a model established based on samples collected in a small region(Beijing) reaches 0.95,and the value of R2 is equal to 0.91 while the model was validated with samples from the whole nation.On the other hand,the R2 of a model established based on nationwide samples reaches 0.96,and R2 is equal to 0.91 while it was validated with the samples in Beijing.These models depict well the relationships between rasterization errors and their affecting factors(DA,DP and SG).The analyzing method established in this study can be applied to effectively predicting rasterization errors in other cases as well. | LIAO Shunbao BAI Zhongqiang BAI Yan | 2012 | Chinese Geographical Science2012，22，6： | 1 |
| 8 | Preparation of MnO2/graphene composite as electrode material for supercapacitors显示文摘 | Qian Yong Lu Shunbao Gao Fenglei | | 0，，10： | 1 |
| 9 | Geochronology and geochemistry of the ore-bearing intrusion in the Longgen Lead-Zinc deposit in Tibet and its geological significance显示文摘1 Introduction The Longgen Lead-Zinc deposit is located in the southern Gangdise-Nyainqentantanglha plate and belongs to the western section of the Nyainqentantanglha copper-lead-zinc-silver metallogenic belt.In this paper, | ZHANG Shuzhi GAO Shunbao ZHANG Yongchao LUAN Kang JIANG Xiaojia | 2017 | Acta Geologica Sinica(English Edition)2017，91，S1： | 1 |
| 10 | A New Discovery of Ag-Pb-Zn Mineralization via Modern Portable Analytical Technology and Stream Sediment Data Processing Methods in Dajiacuo Area, Western Tibet(China)显示文摘Tibet, which is rich in mineral resources, is a treasure trove for geological explorers. However, prospecting work has been slow, especially in the western part, due to the precipitous terrain, changeable climate and low access. Hence, modern advanced field analytical technology and effective data processing methods play significant roles in rapid and efficient exploration in Tibet. In this paper, spectrum-area fractal modeling and portable X-ray fluorescence analysis(pXRFA) were used to identify and verify geochemical anomalies associated with Ag-Pb-Zn mineralization based on a stream-sediment dataset of 39 elements in the Dajiacuo-Xurucuo region of western Tibet. First, staged factor analysis(SFA) was used to obtain the Ag-Pb-Zn-Cd geochemical assemblage. Second, the first-factor pattern obtained using SFA was dissociated by a spectrum-area(S-A) fractal model and a digital elevation model(DEM)-based geochemical model(DGM) was constructed. Finally, the sections of Ag, Cd, Pb, and Zn were obtained using pXRFA. The results show that Ag-Pb-Zn-Cd enrichment zones were mostly located around the contact belt of volcanic rocks and intrusions, or along SE-NW trending faults. Considering the variable terrain and catchment basin, the extension of long axes of Ag-Pb-Zn-Cd anomalies into higher elevation areas that are favorable for Ag-Pb-Zn mineralization should be investigated. Anomaly maps created with the aid of a DGM show promising potential for mineralization in the Dajiacuo-Xurucuo region, and abundant Ag-Pb-Zn mineralization was identified with the assistance of pXRFA in the source areas for the geochemical anomalies in the Dajiacuo. We conclude that SFA and the S-A fractal model constitute a valid tool to identify or verify geochemical anomalies in areas of low-density stream-sediment sampling. The pXRFA can accurately determine the source of geochemical anomalies and improve anomaly verification efficiency. | Xiaojia Jiang Xin Chen Shunbao Gao Youye Zheng Huan Ren Denghui Han Chenchen Yan Junsheng Jiang | 2020 | Journal of Earth Science2020，31，4： | 0 |
| 11 | Discrepant chemical differentiation and magmatic-hydrothermal evolution of high-silica magmatism associated with Pb–Zn and W mineralization in the Lhasa terrane显示文摘High-silica(SiO_(2)>70 wt.%)granites(HSGs)are the main source of W,Sn,and rare metals.However,abundant HSGs,temporally,spatially,and genetically associated with Pb-Zn mineralization,in the Lhasa terrane(LT),provided an ideal opportunity to study the key factors responsible for Pb-Zn enrichment,instead of W-Sn enrichment.Here we contribute to this topic through U-Pb dating of zircon and garnet,and whole-rock and Sr-Nd-Hf isotopic geochemistry of ore-related quartz porphyries in the Bangbule deposit and compared these results with published data from large and giant Pb-Zn and W deposits in the LT.The magmatism-alteration-mineralization event in the Bangbule deposit was recorded by robust zircon U-Pb ages of 77.3±0.9 Ma and hydrothermal garnet U-Pb ages of 75.7±4.8 Ma,which is 10-15 Ma earlier than the main Paleocene metallogenic event and the first record of late Cretaceous Pb-Zn polymetallic mineralization in the LT.The late Cretaceous-Paleocene magmatism and mineralization events are a response to the subduction of Neotethyan oceanic lithosphere,which occurred as a result of the collision of the Indian and Asian plates.These HSGs related to Pb-Zn mineralization,with high totalalkalis and low magnesian contents,are enriched in Ba,Th,and Rb,but depleted in Ti,Eu,Sr,and P.They belong to either the S-type,or I-type granites.The Sr-Nd-Hf isotopic compositions of the Pb-Zn mineralized granites demonstrate that they were generated by the partial melting of Proterozoic basement with or without mantle-derived melt input.This was consistent with the postulated source of W enrichment in the LT.The Pb-Zn and W related granites have similar zircon-Ti-saturation temperatures,comparable low whole-rock Fe_(2)O_(3)/FeO ratios,and zircon oxygen fugacity.This indicated that the Pb-Zn-W enrichment in the high-silica magma system could be attributed to a relatively reduced magma.The Pb-Zn related HSGs,abundant quartz and feldspar phenocrysts,and weak fractionation of twin-elements in wholerock analysis,can be used to reconstruct a model of the magma reservoir.We postulate that these features could be reproduced by silica-rich crystal accumulation in a magma reservoir,with a loss of magmatic fluids.The magma associated with W mineralization exhibited a higher level of differentiation compared to the Pb-Zn related magma;however,different groups of zircon texture with varying rare earth elements and concomitance of rare earth elements tetrad effect and high fractionation of twin-elements in wholerock are formed by a magmatic-hydrothermal transition in highly evolved system.As the source and oxygen fugacities of the Pb-Zn and W related magmas are similar,the absence of a giant W-Sn deposit in the LT may indicate that parent magmas with a low degree of evolution and magmatic-hydrothermal transition are not conducive to their formation.This implies that the rocks that originated as highly evolved silicaterich parent magmas,with a high degree of magmatic-hydrothermal alteration,would need to be targeted for W-Sn mineral exploration in the LT.In summary,our results emphasize that variations in chemical differentiation and the evolution of high-silica magmatic-hydrothermal systems can lead to differences in Pb-Zn and W enrichment.This has implications for the evaluation of the mineral potential of high-silica granites and hence their attractiveness as targets for mineral exploration. | Shunbao Gao Xin Chen Youye Zheng Nan Chao Shunli Zheng Hao Lin Xiaojia Jiang Song Wu | 2022 | Geoscience Frontiers2022，13，5： | 0 |
| 12 | Comparison of Bioleaching of Heavy Metals from Sewage Sludge of Different Solid Concentrations Using Two Inocula显示文摘Two 10%(v/v) different inocula, iron-oxidizing bacteria and sulfur-oxidizing bacteria, were used to investigate the bioleaching of heavy metals from sewage sludge with 10-40 g/L sludge concentration in the batch experiment. The results demonstrated that most of bioleaching rates of Zn and Cu achieved above 80% and 60%, respectively, after 12 d in the sludge with different concentrations and inocula. The lower the solid concentration, the higher the removal rate of heavy metals and the quicker the removal speed in sludge. The system with iron-oxidizing bacteria had faster startup speed and was influenced by solid concentration lightly, while in the system with sulfur-oxidizing bacteria, the removal efficiency was affected by concentration seriously. | Guiqun PENG Ziqiang AO Shunbao LU | 2017 | Agricultural Science & Technology2017，18，12： | 0 |
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