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Geochronology and Geochemistry of Ore-related Granitoids in the Giant Gariatong Rb Deposit,Tibet and Implications for Rb Metallogeny in china

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Acta Geologica Sinica(English Edition) 2024年第1期98卷 83-103页

作者： LIN Bin TANG Juxing TANG Pan SUN Yan QI Jing MSANTOSH XIE Jinling DENG Shilin LI Faqiao XIE Fuwei ZHOU Aorigele MNR key laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China SinoProbe laboratory Chinese Academy of Geological SciencesBeijing 100094China The key laboratory of the ministry of education on Solid Waste Treatment and Recycling School of Environment and ResourceSouthwest University of Science and TechnologyMianyangSichuan 621010China School of Earth Sciences and Resources China University of Geosciences(Beijing)Beijing 100083China Department of Earth Sciences University of AdelaideAdelaide SA-5005Australia Faculty of geosciences and environmental Engineering Southwest Jiaotong UniversityChengdu 610031China Regional Geological Survey Team of the Tibetan Bureau of geology and Mineral Exploration and Development Lhasa 851400China College of Earth Science and key laboratory of Tectonic Controlled Mineralization and Oil Reservoirs Chengdu University of TechnologyChengdu 610059China

Rubidium(Rb)deposits mostly occur in the South china and Central Asia orogenic belts and are often closely associated with highly differentiated *** study investigates a newly-discovered giant Rb deposit at Gariatong in the Central Lhasa terrane in *** field studies and logging data revealed that the Rb mineralization mainly occurs in monzogranite and is related to ***-ICP-MS U-Pb dating of zircon yielded ages of 19.1±0.2 Ma and 19.0±0.2 Ma for greisenized monzogranite and fresh monzogranite,*** monzogranites are characterized as strongly peraluminous,with high contents of SiO2,Al2O3,K2O and Na2O as well as a high differentiation *** are enriched in light rare earth and large ion lithophile elements with significant negative Eu anomalies and depleted high fieldstrength *** and geochemical features of these ore-related monzogranites suggest that they are highly fractionated S-type granites,derived from remelting of crustal materials in a post-collisional *** geochemistry of zircon and apatite points to a low oxygen fugacity of the ore-related monzogranite during the magma’s *** discovery of the Gariatong Rb deposit suggests that the Central Lhasa terrane may be an important region for rare metal mineralization.

关键词： LA-ICP-MS U-Pb dating geochemistry Rb metallogeny Gariatong Tibet

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Integrated Stratigraphy and Mineralogy of the Doushantuo Formation in Weng’an,South china,and Implications for Ediacaran Phosphogenesis

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Journal of Earth Science 2024年第2期35卷 476-503页

作者： Liangxuan Jiao Zhenbing She Dominic Papineau Yaguan Zhang Matthew S.Dodd Kenan Cao Qun Chen Guoyong Chen State key laboratory of biogeology and environmental geology China University of GeosciencesWuhan430078China School of Earth Sciences China University of GeosciencesWuhan430047China London Centre for Nanotechnology University College London17-19 Gordon StreetLondonWC1E 6BTUK Department of Earth Sciences University College LondonLondonWC1E 6BTUK Centre for Planetary Science University College London and Birkbeck CollegeLondonWC1E 7HXUK Innovation Center of Ore Resources Exploration Technology in the Region of Bedrock Ministry of Natural Resources of People’s Republic of China’Guiyang550000China Guizhou Bureau of geology and Mineral Exploration and Development Guiyang550000China

The Ediacaran–Cambrian Phosphogenic Episode is the Earth’s first true phosphogenic event and resulted in worldwide phosphate deposits,which occurred during the processes of the Neoproterozoic Oxygenation *** Ediacaran Doushantuo Formation(ca.635–551 Ma)of Weng’an area in central Guizhou,South china,contains two economic phosphorite beds(the Lower and Upper Phosphorite Beds).This paper presents a detailed stratigraphic,sedimentological and mineralogical study of multiple outcrop and drill core sections of the Doushantuo Formation across the Weng’an area,and identified 11 lithofacies and 4 types of phosphatic *** differences in lithofacies and grain types between the upper and lower phosphate deposits are observed,indicating that the two sets of phosphate deposits are the products of two distinct phosphogenic *** Lower Phosphorite Bed mainly consists of banded and laminated phosphorites,contains micro-oncoids formed by microbially-mediated precipitation and peloids formed by in-situ chemically oscillating reactions,indicating a biochemical and chemical enrichment of phosphorus to sediments during the Early Ediacaran *** Upper Phosphorite Bed is mainly composed of carbonaceous,massive,and stromatolitic phosphorites,contains bioclasts(phosphatized spheroidal fossils),and intraclasts formed by hydrodynamic agitation,suggesting that the major accesses of phosphorus to sediments were the remineralization of organic *** of the two economic phosphorite beds was controlled by two sea-level *** differences have also been documented in contemporaneous phosphate-bearing successions in Brazil and Mangolia,indicating a significant shift in global phosphogenic mechanism during the early and middle Ediacaran,which may be due to the changes in redox conditions in seawater,associated with the Neoproterozoic Oxygenation *** regional active P-cycle processes could produce more free oxygen,which may have contributed to the up

关键词： phosphorite lithofacies phosphatic grains phosphogenic paragenesis phosphorus cycle mineralogy

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A novel CGBoost deep learning algorithm for coseismic landslide susceptibility prediction

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Geoscience Frontiers 2024年第2期15卷 349-365页

作者： Qiyuan Yang Xianmin Wang Jing Yin Aiheng Du Aomei Zhang Lizhe Wang Haixiang Guo Dongdong Li Hubei Subsurface Multi-scale Imaging key laboratory School of Geophysics and GeomaticsChina University of GeosciencesWuhan 430074China State key laboratory of biogeology and environmental geology China University of GeosciencesWuhan 430074China key laboratory of Geological and Evaluation of ministry of education China University of GeosciencesWuhan 430074China laboratory of Natural Disaster Risk Prevention and Emergency Management School of Economics and ManagementChina University of GeosciencesWuhan 430074China College of Electronic Science and Engineering National University of Defense TechnologyChangsha 410073China

The accurate prediction of landslide susceptibility shortly after a violent earthquake is quite vital to the emergency rescue in the 72-h‘‘golden window”.However,the limited quantity of interpreted landslides shortly after a massive earthquake makes landslide susceptibility prediction become a *** address this gap,this work suggests an integrated method of Crossing Graph attention network and xgBoost(CGBoost).This method contains three branches,which extract the interrelations among pixels within a slope unit,the interrelations among various slope units,and the relevance between influencing factors and landslide probability,respectively,and obtain rich and discriminative features by an adaptive fusion ***,the difficulty of susceptibility modeling under a small number of coseismic landslides can be *** a basic module of CGBoost,the proposed Crossing graph attention network(Crossgat)could characterize the spatial heterogeneity within and among slope units to reduce the false alarm in the susceptibility ***,the rainfall dynamic factors are utilized as prediction indices to improve the susceptibility performance,and the prediction index set is established by terrain,geology,human activity,environment,meteorology,and earthquake *** is applied to predict landslide susceptibility in the Gorkha meizoseismal area.3.43%of coseismic landslides are randomly selected,of which 70%are used for training,and the others for *** the testing set,the values of Overall Accuracy,Precision,Recall,F1-score,and Kappa coefficient of CGBoost attain 0.9800,0.9577,0.9999,0.9784,and 0.9598,*** by all the coseismic landslides,CGBoost outperforms the current major landslide susceptibility assessment *** suggested CGBoost can be also applied to landslide susceptibility prediction in new earthquakes in the future.

关键词： Coseismic landslide Landslide susceptibility prediction Graph neural network Deep learning

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Teffichthys wui sp. nov., a new perleidid fish from the Early Triassic of Jiangsu and Anhui, china

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古脊椎动物学报（中英文） 2024年第3期62卷 165-185页

作者： XU Guang-Hui YUAN Zhi-Wei REN Yi LIAO Jun-Ling ZHAO Li-Jun SONG Hai-Jun key laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of SciencesBeijing 100044 State key laboratory of biogeology and environmental geology School of Earth SciencesChina University of GeosciencesWuhan 430074 university of Chinese Academy of Sciences Beijing 100049 College of Economics and Trade Minzu Normal University of Xingyi XingyiGuizhou 562400 Zhejiang Museum of Natural History Hangzhou 310014

Perleididae is a group of stem neopterygian fishes known only from the ***,we report the discovery of a new perleidid,Teffichthys wui ***.,based on six well-preserved specimens from the late Smithian(Olenekian,Early Triassic)marine deposits of Jurong,Jiangsu and Chaohu,Anhui,*** new discovery documents the third and youngest species of Teffichthys,which is slightly younger than the Dienerian(Induan)*** from Guizhou and the early Smithian *** from *** new species shows diagnostic features of Teffichthys(presence of a spiracular,38-41 lateral line scales,and no more than three epaxial rays in the caudal fin)but differs from *** and *** in some autapomorphies(e.g.,a horizontal opercle/subopercle contact and smooth scales with a nearly straight posterior margin).The diagnostic features for the genus Teffichthys and the family Perleididae are emended based on detailed comparisons of the new taxon with other *** phylogenetic relationships of perleidids with other stem neopterygians are discussed using a cladistic approach,and the results provide new insights into the phylogeny and classification of main stem neopterygian clades.

关键词： Jiangsu Anhui Early Triassic Perleidiformes osteology phylogeny

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仿生阳离子门控动态液膜纳米通道用于离子和分子的可控传输

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Science china Materials 2024年第8期67卷 2523-2531页

作者：梁春晓王殿宇何少凡张路夏帆田野 key laboratory of Bioinspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China university of Chinese Academy of Sciences Beijing 100049China School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China State key laboratory of biogeology and environmental geology Engineering Research Center of Nano-Geomaterials of Ministry of EducationFaculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430074China Suzhou Institute for Advanced Research University of Science and Technology of ChinaSuzhou 215123China Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of SciencesQingdao 266101China

钙离子门控在生命活动中非常重要,受此启发,人工离子门控得到广泛研究.然而,传统离子门控依赖不对称电荷结构和固定通道尺寸导致通道难以堵塞和门控比低.我们构建了一种阳离子门控动态液膜纳米通道,通过将油滴插入充满离子溶液的毛细管... 详细信息

钙离子门控在生命活动中非常重要,受此启发,人工离子门控得到广泛研究.然而,传统离子门控依赖不对称电荷结构和固定通道尺寸导致通道难以堵塞和门控比低.我们构建了一种阳离子门控动态液膜纳米通道,通过将油滴插入充满离子溶液的毛细管中,利用油和毛细管之间的液膜作为纳米通道传输离子和分子,其高度可通过静电力灵活调节.门控开关依赖于离子价态.多价离子比单价离子更易降低静电斥力,从而使纳米通道从“ON”态变为“OFF”态,并显示出良好的循环门控性能和高开关比.本文提出了一种便利的智能纳米通道,仅需调节油水和水固界面之间的静电力即可调节液膜内离子和分子的传输.该技术在药物输送、生物传感和物种分离等领域具有广阔的应用前景.

关键词：纳米通道多价离子离子溶液门控静电斥力药物输送静电力液膜

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全新世陆地夏季温度变化及其降温趋势（英文）

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Science Bulletin 2024年第18期 2930-2937页

作者：郑宇坤刘鸿雁王红亚谢树成杨欢封斯文张泽宇赵文杰梁博毅 College of Urban and environmental Sciences and MOE laboratory for Earth Surface Processes Peking University State key laboratory of biogeology and environmental geology School of Earth Sciences China University of Geosciences Hubei key laboratory of Critical Zone Evolution School of Geography and Information Engineering China University of Geosciences College of Forestry Precision Forestry Key Laboratory of Beijing Beijing Forestry University

The scarcity of proxies and calibration models for quantitatively reconstructing millennial timescale seasonal temperature tremendously constraints our understanding of the Holocene thermal variation and its driven mechanisms. Here, we established two global warm-season temperature models by applying deep learning neural network analysis to the branched tetraether membrane lipids originating from surface soil and lacustrine sediment bacteria. We utilized these optimal models in global well-dated lacustrine,peatland, and loess profiles covering the Holocene. All reconstructions of warm-season temperatures,consistent with climate model simulations, indicate cooling trends since the early Holocene, primarily induced by decreased solar radiation in the Northern Hemisphere due to the precession peak at the *** further demonstrated that the membrane lipids can effectively enhance the future millennial seasonal temperature research, including winter temperatures, without being restricted by geographical location and sedimentary carrier.

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青藏高原冰芯记录揭示早-中全新世发生多次融水事件

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Science Bulletin 2024年第3期69卷 375-381页

作者：庞洪喜张王滨吴霜叶 Theo M.Jenk Margit Schwikowski 侯书贵 key laboratory of Coast and Island Development of ministry of education School of Geography and Ocean ScienceNanjing UniversityNanjing 210023China School of Oceanography Shanghai Jiao Tong UniversityShanghai 200240China Department of geology and environmental geosciences University of DaytonDayton OH 45469USA laboratory of environmental Chemistry Paul Scherrer InstituteVilligen PSI 5232Switzerland Oeschger Centre for Climate Change Research University of BernBern 3012Switzerland Frontiers Science Center for Critical Earth Material Cycling Nanjing UniversityNanjing 210023China

Understanding the impact of meltwater discharge during the final stage of the Laurentide Ice Sheet(LIS)has important implications for predicting sea level rise and climate *** we present a highresolution ice-core isotopic record from the central Tibetan Plateau(TP),where the climate is sensitive to the meltwater forcing,and explore possible signals of the climate response to potential LIS meltwater discharges in the early to *** record shows four abrupt large fluctuations during the 7–9 ka BP(kiloannum before present),reflecting large shifts of the mid-latitude westerlies and the Indian summer monsoon(ISM)over this period,and they corresponded to possible LIS freshwater events documented in other paleoclimate *** study suggests that multiple rapid meltwater discharge events might have occurred during the final stage of *** finding implies the possibility of rapid sea level rise and unstable climate in the transition zone between the mid-latitude westerlies and the ISM due to fast polar ice retreat under the anthropogenic global warming.

关键词： Tibetan Plateau Ice core Water isotopes Meltwater events Abrupt climate change

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Isolation and characterization of a profenofos degrading bacterium

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Journal of environmental Sciences 2009年第11期21卷 1591-1597页

作者： Saadatullah Malghani Nivedita Chatterjee key laboratory of biogeology and environmental geology Ministry of Education of China School of Environmental StudiesChina University of Geosciences

Profenofos, a well known organophosphate pesticide, has been in agricultural use over the last two decades for controlling Lepidopteron pests of cotton and tobacco crops. In this study, a bacterial strain, OW, was isolated from a long term profenofos exposed soil by an enrichment technique, and its ability to degrade profenofos was determined using gas chromatography. The isolated strain OW was identified as Pseudomonas aeruginosa according to its physiological and biochemical properties, and the analysis of its 16S rRNA gene sequence. The strain grew well at pH 5.5-7.2 with a broad temperature profile. Bioremediation of profenofos-contaminated soil was examined using soil treated with 200 μg/g profenofos, which resulted in a higher degradation rate than control soils without inoculation. In a mineral salt medium （FTW）, removal in the level of profenofos of 86.81% was obtained within 48 h of incubation. The intermediates of profenofos metabolism indicated that the degradation occurred through a hydrolysis mechanism, and one of the metabolites was found to be 4 bromo-2-cholorophenol （BCP） which in turn was also mineralized by the strain. The results of this study highlighted the potentiality of P. aeruginosa as a biodegrader which could be used for the bioremediation of profenofos contaminated soil.

关键词： profenofos organophosphate pesticide Pseudomonas aeruginosa

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Detrital Composition of Lower-Middle Jurassic Sandstones from Huangshi,Hubei:Implication for Provenance Types and Geotectonics

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Journal of Earth Science 2009年第5期20卷 784-796页

作者：杨江海杜远生覃永军白雪峰 key laboratory of biogeology and environmental geology of the ministry of education China University of Geosciences key laboratory of biogeology and environmental geology of the ministry of education Faculty of Earth SciencesChina University of Geosciences Faculty of Earth Sciences China University of Geosciences

The detrital modes of the sandstones from the south basin of Dabie（大别） orogenic belt during the Early-Middle Jurassic are complex due to multiple *** compositions of medium-coarse sandstones from the Lower-Middle Jurassic,Huangshi（黄石）,show three main provenances：recycled ororgen,volcanic arc（arc orogen）,and continental block on the bases of the Dickinson discriminating diagrams of modal composition and analysis of sandstone *** with sparse published paleocurrent data,geotectonic setting of the study area,and the unpublished detrital zircon age data,the positions of the main provenances are inferred as follows：coastal orogenic belt（COB） in the East china provided detritus as the recycled orogen provenance;Dabie orogenic belt（DOB） to the north was the source of volcanic arc（arc orogen） materials;and the continental block clasts were likely from the uplift of the Yangtze basement（UYB）（Jiangnan（江南） uplift）.Six sedimentary cycles are recognized in the studied section,one in Wuchang（武昌） Formation,and five in Huajiahu（花家湖） *** the deposition,the three main provenances play different *** quantitative petrofacies analysis revealed distinct changes of the effect from each source,that is,61.9%（Cycle Ⅰ）→54.5%（Cycle Ⅲ）→50%（Cycle Ⅳ）→57.9%（Cycle Ⅴ）→14.3%（Cycle Ⅵ）,14.3%（Cycle Ⅰ）→21.2%（ Cycle Ⅲ）→40%（Cycle Ⅳ）→36.8%（Cycle Ⅴ）→14.3%（Cycle Ⅵ）,and 23.8%（Cycle Ⅰ）→24.2%（Cycle Ⅲ）→10%（Cycle Ⅳ）→5.3%（Cycle Ⅴ）→71.4%（Cycle Ⅵ） from COB,DOB,and UYB,*** results show that（1） COB behaved in considerable activation during the EarlyJurassic but weakened in the Middle Jurassic;（2） the vigorous tectonic uplift of DOB initiated in Middle Jurassic;and（3） UYB was in stabilization basically from the Early to Middle Jurassic.

关键词： Dabie orogenic belt Lower-Middle Jurassic provenance analysis geotec-tonics.

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Spatiotemporal variability of ocean chemistry in the early Cambrian,South china

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Science china Earth Sciences 2014年第4期57卷 579-591页

作者： JIN ChengSheng LI Chao PENG XingFang CUI Hao SHI Wei ZHANG ZiHu LUO GenMing XIE ShuCheng State key laboratory of biogeology and environmental geology China University of Geosciences

Following the Ediacaran metazoan radiation,the "Cambrian Explosion" set up the major framework of todays' animal phyla as well as modern marine ***,we present a preliminary investigation on the temporal and spatial(from shallow to deep waters) variations of the early Cambrian ocean chemistry in South china through analyzing a Fe-S-C systematic dataset integrated from *** investigation indicates that the early Cambrian deep ocean in South china was still anoxic and Fe2+-enriched(i.e.,ferruginous) although its surface was oxic,and in between a metastable euxinic(anoxic and sulfidic) water zone may have dynamically developed in anoxic shelf waters with an increasing weathering sulfate ***,accompanying marine transgression and regression cycles in the early Cambrian,such a "sandwich" structure in ocean redox chemistry demonstrates five evolutional stages,which can be well correlated to the spatiotemporal patterns of fossil records in South *** good correlation between metazoan fossil occurrences and water chemistry in South china suggests that early animals possibly possessed ability to inhabit anoxic but generally not euxinic environments as free H2S was fatal to most *** view can well explain why those small shell fauna and sponges disappeared from shelf to slope areas where sulfidic Ni-Mo-rich shales were widely ***,we conclude that the spatiotemporal variations of ocean chemistry and its biological effects probably played a key role in the phased animal radiations and "extinctions" in the early Cambrian.

关键词： South china early Cambrian ocean chemistry euxinic Cambrian Explosion

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