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Large-scale distribution of elements in Chinese aerosol

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China Particuology 2007年第6期5卷 395-400页

作者： Jinghua guo Kenneth A. Rahn guoshun Zhuang Shuifeng wang Analysis and Testing Center Beijing Normal University Beijing 100875 China Center for Atmospheric Chemistry Studies Graduate School of Oceanography University of Rhode Island Narragansett R1 02882-1197 USA The Center for Atmospheric Chemistry Study Department of Environmental Science & Engineering Fudan University Shanghai 200433 China

In spite of increasing attention on Chinese aerosol, there has never been a country-wide survey of its general characteristics. This paper presents elemental data for aerosol at 23 sites in and around China, mostly drawn from the literature, and shows some of the large-scale patterns. Al, Na, and Se are used to represent the crustal, marine, and pollution components, respectively. Most of the patterns are aligned in Sw-NE. Al and Na are highest to the nw and the SE, respectively, and their ratio changes rapidly near the coast. Se has a broad maximum over Central China, and the Se/Al ratio （an indicator of pollution vs. crustal aerosol） increases progressively from the nw to the SE. A simple index for simulating pollution aerosol, which uses population density, annual precipitation, and mean wind speed, adequately reproduces the large-scale pattern of pollution aerosol and shows how crustal Al in the nw gradually gives way to flyash Al toward the SE.

关键词： Chinese aerosol Elemental concentration Distribution Pollution index

准噶尔盆地东部石钱滩凹陷石炭系石钱滩组烃源岩特征及其生烃潜力分析

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西北地质 2024年第2期57卷 34-45页

作者：崔炳富孔令华陈军张大勇梁辉李书凯郭望中国石油新疆油田分公司勘探开发研究院新疆克拉玛依834000 中国石油吐哈油田分公司勘探开发研究院新疆哈密839000 西安西北有色地质研究院有限公司陕西西安710054 中国地质调查局西安地质调查中心陕西西安710119

石钱滩组烃源岩为准噶尔盆地石钱滩凹陷石炭系的主力生烃层位。在充分调研其空间展布的基础上,选取最新发现的双井子地质探槽剖面及石钱1井、石钱2井与钱1井进行系统的烃源岩总有机碳、热解、族组分组成、有机显微组分、镜质体反射率及... 详细信息

石钱滩组烃源岩为准噶尔盆地石钱滩凹陷石炭系的主力生烃层位。在充分调研其空间展布的基础上,选取最新发现的双井子地质探槽剖面及石钱1井、石钱2井与钱1井进行系统的烃源岩总有机碳、热解、族组分组成、有机显微组分、镜质体反射率及饱和烃色质等有机地球化学分析测试。结果表明,石钱滩组烃源岩为一套典型的海湾泻湖相沉积,呈nw–SE向展布于石钱滩凹陷,局部地区厚度巨大,可达370 m,沉积厚度中心位于凹陷东南隅。富有机质层段主要集中在石钱滩组下部,次为上部。整体具有较高的有机质丰度,可达到好等级及以上,有机质类型以Ⅱ2-Ⅲ为主,且已进入到高成熟生气阶段。综合研究认为,石炭系石钱滩组烃源岩具有良好的生烃条件,能够为石钱滩凹陷提供充足的油气源。

关键词：准噶尔盆地石钱滩组烃源岩生烃条件

Early dolomitisation of the Lower-Middle Ordovician cyclic carbonates in northern Tarim Basin, nw China

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Science China Earth Sciences 2017年第7期60卷 1283-1298页

作者： guo Chuan CHEN DaiZhao DONG ShaoFeng QIAN YiXiong LIU CunGe Key Laboratory of Petroleum Resources Research Institute of Geology and Geophysics Chinese Academy of Sciences wuxi Research Institute Petroleum Geology SINOPEC College of Petroleum Engineering Guangdong University of Petrochemical Technology

High-frequency metre-scale cycles are present within the Lower-Middle Ordovician carbonate successions in northern Tarim Basin, nw China. These metre-scale cycles were variably dolomitised from top to bottom. Three types of replacive dolomites were recognised, including dololaminite(very finely to finely crystalline, planar-s to nonplanar-a dolomite;type-1), patterned dolomite(finely crystalline, planar-s dolomite; type-2), and mottled dolomite(finely to medium crystalline,nonplanar-a(s) dolomite; type-3). Petrographic evidence indicate these dolomites were primarily deposited in supratidal to restricted subtidal environments, and formed in near-surface to shallow burial realms. Geochemically, all types of dolomites have similar δ13C and 87Sr/86 Sr ratios comparable to calcite precipitated in equilibrium with the Early-Middle Ordovician seawater. These geochemical attributes indicate that these dolomites were genetically associated and likely formed from connate seawater-derived brines. Of these, type-1 dolomite has δ18O values(.4.97‰ to.4.04‰ VPDB) slightly higher than those of normal seawater dolomite of the Early-Middle Ordovician age. Considering the absence of associated evaporites within type-1 dolomite, its parental fluids were likely represented by slightly evaporated(i.e., mesosaline to penesaline) seawater with salinity below that of gypsum precipitation. More depleted δ18O values(.7.74‰ to.5.20‰ VPDB) of type-2 dolomite and its stratigraphic position below type-1 dolomite indicate the generation of this dolomite from mesosaline to penesaline brines at higher temperatures in near-surface to shallow burial domains. Type-3 dolomite yields the most depleted δ18O values(–9.30‰to –7.28‰ VPDB), pointing to that it was most likely formed from coeval seawater-derived brines at highest temperatures in a shallow burial setting. There is a downward decreasing trend in δ18O values from type-1 through type-2 to type-3 dolomites, and in abundance of dolomites, indicatin

关键词： Early dolomitisation Cyclicity Carbonate Lower-Middle Ordovician Tarim Basin

Structural characteristics of central depression belt in deep-water area of the Qiongdongnan Basin and the hydrocarbon discovery of Songnan low bulge

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Acta Oceanologica Sinica 2021年第2期40卷 42-53页

作者： Mo Ji Qingbo Zeng Haizhang Yang Shuai guo Kai Zhong CNOOC Research Institute Co. Ltd.Beijing 100028China State Key Laboratory of Marine Geology Tongji UniversityShanghai 200092China Marine Resource Research Center Tongji UniversityShanghai 200092China

The Qiongdongnan Basin has the first proprietary high-yield gas field in deep-water areas of China and makes the significant breakthroughs in oil and gas *** central depression belt of deep-water area in the Qiongdongnan Basin is constituted by five sags,*** Sag,Lingshui Sag,Songnan Sag,Baodao Sag and Changchang *** is a Cenozoic extensional basin with the basement of pre-Paleogene as a *** structural research in central depression belt of deep-water area in the Qiongdongnan Basin has the important meaning in solving the basic geological problems,and improving the exploration of oil and gas of this *** seismic interpretation and structural analysis in this article was operated with the 3D seismic of about 1.5×104 km2 and the 2D seismic of about 1×104 *** sampling points were selected to calculate the fault activity rates of the No.2 *** deposition rate was calculated by the ratio of residual formation thickness to deposition time *** paleo-geomorphic restoration was obtained by residual thickness method and impression *** faults in the central depression belt of deep-water area of this basin were mainly developed during Paleogene,and chiefly trend in NE–Sw,E–w and nw–SE *** architectures of these sags change regularly from east to west:the asymmetric grabens are developed in the Ledong Sag,western Lingshui Sag,eastern Baodao Sag,and western Changchang Sag;half-grabens are developed in the Songnan Sag,eastern Lingshui Sag,and eastern Changchang *** tectonic evolution history in deep-water area of this basin can be divided into three stages,***-depression stage,thermal subsidence stage,and neotectonic *** Ledong-Lingshui sags,near the Red River Fault,developed large-scale sedimentary and subsidence by the uplift of Qinghai-Tibet Plateau during neotectonic *** Baodao-Changchang sags,near the northwest oceanic sub-basin,developed the large-scale magmatic activities and the tr

关键词： Qiongdongnan Basin deep-water area structural differentiation

In situ TEM visualization of Ag catalysis in Li-O_(2)nanobatteries

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Nano Research 2023年第5期16卷 6833-6839页

作者： Yixuan wen Shuaijun Ding Chongchong Ma Peng Jia wei Tu Yunna guo Shuang guo wei Zhou Xiaoqian Zhang Jianyu Huang Liqiang Zhang Tongde Shen Yuqing Qiao Hebei Key Laboratory of Applied Chemistry College of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004China Clean Nano Energy Center State Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdao 066004China

Lithium-oxygen(Li-O_(2))batteries have been considered as an ideal solution to solving the global energy ***(Ag)and Agbased catalyst have been extensively studied due to their high catalytic activities in Li-O_(2)***,it remains a challenge to track the catalytic mechanism during the charge/discharge ***,a nanoscale processing method was used to assemble a Li-O_(2)nanobattery in an aberration-corrected environmental transmission electron microscope(ETEM),where a single Ag nanowire(nw)was used as catalyst for O_(2)electrode.A visualization of the lithium ion insertion process during the electrochemical reactions was achieved in this *** Ag nanoparticles(NPs)were observed on the surface of the Ag nw,which were covered by the discharge product Li2O_(2).By simultaneously studying the evolution of the interface and the phase transformation,it can be concluded that these Ag NPs wrapped around Ag nw acted as catalyst during the subsequent charge/discharge *** on these studies,Ag NPs decorated on porous carbon were synthesized,it can simultaneously improve the cycling stability(100 cycles)and the maximum specific capacity(17,371 mAh·g^(−1)at a current density of 100 mA·g^(−1))in a coin cell Li-O_(2)*** study suggests that nanoscale Ag may be a promising catalyst for Li-O_(2)battery.

关键词： Li-O_(2)battery in situ environmental transmission electron microscopy catalyst Ag nanoparticles

Geological Structure and Dynamics of the Yinggehai Active Rift Basin,South China Sea

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Journal of Earth Science 2023年第6期34卷 1732-1743页

作者： Yue Yao Shaobin guo Xiaopeng Li Xiaobo Zhao Shenglin He College of Environmental Science and Engineering Tongji UniversityShanghai 200092China The Administrative Centre for China's Agenda 21(ACCA21) Beijing 100038China School of Energy Resources China University of Geosciences(Beijing)Beijing 100083China School of Earth Sciences and Spatial Information Engineering Hunan University of Science and TechnologyChangsha 411100China School of Earth Resources China University of GeosciencesWuhan 430074China Zhanjiang Branch of CNOOC Ltd. Zhanjiang 524057China

The Yinggehai Basin is a unique Nnw-trending petroliferous basin in the northwestern South China *** paper mainly utilized stratigraphic,tectonic and seismic data by characterizing the geological structures and conducting the geo-mechanical analysis to study the formation,evolution and dynamics of the Yinggehai *** study indicates that the Ailaoshan-Truong Son extruded terrane is composed of multiple secondary extruded *** Red River fault zone,located within the Qiangtang-Simao-Yinggehai mantle flow channel and basin zone,experienced transform-type sinistral strike-slip motion before the basin forming stage and formed a nw-trending extruded mantle uplift,which activated the Yinggehai *** experiencing the rift depression,fault depression,and fault subsidence,the basin eventually formed large-scale,thick sedimentation features with ideal hydrocarbon-forming conditions at the end of the ***,the basin dynamically transformed and entered a period of tectonic superposition,reworking,and thermal *** of the Nnw thrust sinistral strike-slip fault zone on the northern Hanoi sub-basin complicated the basin *** the Pliocene,the southern Yinggehai main basin has been transformed into an extensional dextral strike-slip environment that hosted numerous mud *** thin crust and high geothermal gradient provide favorable conditions for the large-scale accumulation of natural gas.

关键词： Yinggehai Basin Ailaoshan-Truong Son extruded terrane mantle flow channel active rift geodynamics naturalgas

基于区间灰数的中心点白化权函数灰色评价模型——以南京A疗养院满意度评价为例

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数学的实践与认识 2024年第7期54卷 15-27页

作者：黄金鑫党耀国叶璟王俊杰朱晓月南京航空航天大学经济与管理学院江苏南京211100 南京财经大学管理科学与工程学院江苏南京210046

针对疗养院满意度评价存在的无法用实数表征的问题,在调研问卷分析中引入区间灰数,对疗养院在体检、餐饮、水疗、客房、病房、环境等方面指标的满意度情况进行表征.在区间灰数中心点白化权函数评价模型的基础上,构建基于隶属度和累积效... 详细信息

针对疗养院满意度评价存在的无法用实数表征的问题,在调研问卷分析中引入区间灰数,对疗养院在体检、餐饮、水疗、客房、病房、环境等方面指标的满意度情况进行表征.在区间灰数中心点白化权函数评价模型的基础上,构建基于隶属度和累积效应的区间灰数白化权函数聚类评价模型,对A疗养院的满意度进行综合评价,从而发现疗养院服务管理中的优势和不足,并为疗养院今后的发展提出相应的对策建议.

关键词：疗养院满意度评价区间灰数

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西北地区与锡成矿有关的花岗岩特征及成矿

西北地质 2024年第5期57卷 27-39页

作者：彭素霞郭玉张照伟全孝勤陈博谢春林中国地质调查局西安地质调查中心/西北地质科技创新中心自然资源部岩浆作用成矿与找矿重点实验室陕西西安710119 河南省西华县第二高级中学河南周口466600 中国冶金地质总局西北地质勘查院陕西西安710119

西北地区是国内成矿条件优越、矿产资源集中区域之一,但锡产出不足全国的2%,且分布零散、规模较小,所以西北地区锡矿并没有得到很多关注,且已有研究主要偏重典型矿床的地球化学分析和矿床成因,对区域成矿特征和成矿规律少有总结。笔者... 详细信息

西北地区是国内成矿条件优越、矿产资源集中区域之一,但锡产出不足全国的2%,且分布零散、规模较小,所以西北地区锡矿并没有得到很多关注,且已有研究主要偏重典型矿床的地球化学分析和矿床成因,对区域成矿特征和成矿规律少有总结。笔者选择西北地区与锡有关的花岗岩为研究对象,通过分析此类花岗岩的特征提出锡矿找矿新认识。分析显示,Sn元素易富集于晚期熔体,且易由地幔向地壳富集,花岗岩浆源区地壳物质越多对形成锡矿越有利,A型花岗岩对锡成矿有更为明显的专属性,尤其在大陆碰撞、俯冲和洋陆转换环境下形成的过铝质和钙碱性花岗岩更有利于锡富集。同时,与锡成矿有关的花岗岩普遍具有较高锡丰度,如东准和天山地区达到7×10^(-6),远远高于地壳Sn丰度值(1.7×10^(-6)),加之成矿区地层锡值普遍偏高,锡经过不断的迁移、富集、岩浆结晶分异并在一定的温度下最终成矿。文中简述了西北地区的6个锡矿成矿区带特征,为西北地区锡矿找矿提供参考。

关键词：锡矿与锡有关花岗岩成矿条件成矿环境西北地区

Early Paleozoic Granulite-Facies Metamorphism and Magmatism in the Northern wulan Terrane of the Quanji Massif:Implications for the Evolution of the Proto-Tethys Ocean in Northwestern China

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Journal of Earth Science 2018年第5期29卷 1081-1101页

作者： Qinyan wang Yanjun Dong Yuanming Pan Fanxi Liao Xiaowei guo School of Earth Sciences Zhejiang UniversityHangzhou 310027China School of Earth Sciences State Key Laboratory of Geological Processes and Mineral ResourcesChina University of GeosciencesWuhan 430074China Hubei Earthquake Administration Wuhan 430071China Department of Geological Sciences University of SaskatchewanSaskatoon S7N 5E2Canada

The nature and evolution of the Proto-Tethys Ocean originated from the breakup of the supercontinent Rodinia remain controversial. Early Paleozoic magmatism and metamorphism can pro- vide important constraints on the closure of the Proto-Tethys Ocean. This paper reports on a set of geological, petrographical, geochronological, mineralogical and geochemical data for Early Paleozoic granite, gabbro, granulite and granitic leucosome in the northern wulan terrane of the Quanji Massif. Zircon LA-ICP-MS U-Pb dating reveals two episodes of magmatism, with the emplacement of a gran- itic pluton at 476.7±2.8 Ma and a gabbroic dike at 423±2 Ma. whole-rock geochemistry suggests an arc affinity for the magma of the granitic pluton but a post-collisional extension setting for the gabbroic dike. Zircon LA-ICP-MS U-Pb dating also shows that the peak granulite-facies metamorphism and anatexis occurred at --475 Ma, coeval with the formation of the granitic pluton in the Quanji Massif as well as the early lawsonite-bearing eclogites in the North Qaidam high-pressure and ultrahigh-pressure （HP-UHP） metamorphic belt to the south. The granulite-facies metamorphism with peak P-T condi- tions at 718-729 ℃ and 0.46-0.53 GPa is characterized by an anticlockwise P-T path. Our data provide compelling evidence for Early Paleozoic paired metamorphic belts with HP-UHP metamorphism in the North Qaidam to the south and low PIT metamorphism in the Quanji Massif as a continental arc to the north, hence suggesting a northward subduction polarity for the Proto-Tethys oceanic plate. The intrusion of the post-collisional gabbroic dike supports for the closure of the Proto-Tethys Ocean in north- western China before 423 Ma.

关键词： arc magmatism low P/T granulite-facies metamorphism paired metamorphic belts Proto-Tethys Ocean northern wulan terrane nw China.