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Problems and Development Suggestions of Nature Education in Jiangxi Province
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作者 Hua LI Shinan XIANG Feiping CHEN 《Meteorological and Environmental Research》 2024年第1期46-47,56,共3页
The forest coverage rate of Jiangxi Province ranks second in China.It has rich natural resources,a long history of ancient color culture and rich red culture.In the development of nature education,Jiangxi Province has... The forest coverage rate of Jiangxi Province ranks second in China.It has rich natural resources,a long history of ancient color culture and rich red culture.In the development of nature education,Jiangxi Province has great potential and advantages.This paper introduces the development conditions of nature education in Jiangxi Province,summarizes the problems existing in the development of nature education in Jiangxi Province from the aspects of the types of nature education and the construction of nature education base,such as simple content and single form,imperfect infrastructure and lack of professionals,and puts forward some suggestions on the development of nature education in Jiangxi Province. 展开更多
关键词 jiangxi Province Nature education PROBLEM Development suggestion
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A New Species of Jiangxialepis(Galeaspida)from the Lower Telychian(Silurian)of Jiangxi and its Biostratigraphic Significance 被引量:3
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作者 SHAN Xianren ZHAO Wenjin GAI Zhikun 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2023年第2期393-403,共11页
A new species of Shuyuidae(Eugaleaspiformes,Galeaspida),Jiangxialepis jiujiangensis sp.nov.,is described from the lower Telychian(Llandovery,Silurian)Qingshui Formation in Jiujiang,Jiangxi Province,China.The new speci... A new species of Shuyuidae(Eugaleaspiformes,Galeaspida),Jiangxialepis jiujiangensis sp.nov.,is described from the lower Telychian(Llandovery,Silurian)Qingshui Formation in Jiujiang,Jiangxi Province,China.The new species differs from the type species J.retrospina from Wuhan,Hubei Province in its sharp and posteriorly positioned median dorsal spine and narrow spine-shaped inner cornual processes.The Silurian strata in Xiushui–Wuning area has provided a standard framework for the correlation of Silurian shallow marine red beds in South China.Thus,the finding of J.jiujiangensis from the Silurian Lower Red Beds(LRBs)in Jiangxi Province bears very important biostratigraphic significance.It can directly compare to Jiangxialepis retrospina from the Fentou Formation in Wuhan,Hubei Province in the genus level.This indicates that the age of the fish-bearing strata in Wuhan is most likely to be the early Telychian rather than middle Telychian as previously assumed. 展开更多
关键词 Galeaspids Qingshui Formation Lower Red Beds SILURIAN jiangxi Province
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Thinking and Research on County-level Territorial Spatial Plans in the Territorial Spatial Plan System:A Case Study of Jiangxi Province
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作者 SUN Yuxi 《Journal of Landscape Research》 2023年第5期44-47,共4页
The establishment of the territorial spatial plan system is an important space reform act to meet the new era in China.The reform of territorial spatial plans according to classification is in line with the characteri... The establishment of the territorial spatial plan system is an important space reform act to meet the new era in China.The reform of territorial spatial plans according to classification is in line with the characteristics of China’s current territorial spatial administration and urban development.At present,China’s provincial and municipal territorial spatial plans have been publicized,and county-level territorial spatial plans are being approved one after another,while the compilation of township-level territorial spatial plans is being carried out in an orderly manner.In this paper,based on the historical background of the establishment of territorial spatial plan system integrating“multiple plans”,the background of territorial spatial plans and the important role of county-level territorial spatial plans were first elaborated,and then the progress of the compilation of county-level territorial spatial plans in Jiangxi Province was sorted out.Finally,the problems existing in the compilation were discussed,and corresponding suggestions were put forward to provide a certain reference for the construction of a scientific and reasonable territorial spatial plan system. 展开更多
关键词 Territorial spatial plans County-level plans jiangxi Province
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Prediction of Total Output Value of Construction Industry in Jiangxi Province Based on Grey Prediction Model
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作者 Le XU Yuangui LIU 《Asian Agricultural Research》 2023年第5期11-13,43,共4页
In order to realize the accurate prediction of the total output value of construction industry in the future,the grey prediction model is used to compare the measured value with the predicted value from 2012 to 2021,a... In order to realize the accurate prediction of the total output value of construction industry in the future,the grey prediction model is used to compare the measured value with the predicted value from 2012 to 2021,and based on the existing data,the total output value of construction industry in Jiangxi Province in the next five years is predicted.The results show that the grey prediction model has a good prediction effect,and the error between the predicted value and the measured value is within 14%,which provides a basis for policy adjustment and resource optimization. 展开更多
关键词 jiangxi Province Grey prediction model Total output value of construction industry FORECAST
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A New Oviraptorid Dinosaur (Theropoda: Oviraptorosauria) from the Late Cretaceous of Jiangxi Province, Southern China 被引量:6
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作者 WEI Xuefang PU Hanyong +2 位作者 XU Li LIU Di Lü Junchang 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2013年第4期899-904,共6页
A new oviraptorid dinosaur Jiangxisaurus ganzhouensis gen. et sp. nov., is erected based on a partial skeleton from the Upper Cretaceous Nanxiong Formation of Ganzhou City, Jiangxi Province. The new taxon differs from... A new oviraptorid dinosaur Jiangxisaurus ganzhouensis gen. et sp. nov., is erected based on a partial skeleton from the Upper Cretaceous Nanxiong Formation of Ganzhou City, Jiangxi Province. The new taxon differs from other oviraptorids in the weakly downturned rostrum of the lower jaw, much-elongated mandible with a height-to-length ratio being about 20% and the length ratio of radius to humerus of about 0.70. This species not only adds a new member to oviraptorid dinosaurs, but also provides more information about oviraptorid paleogeographical distribution in southern China. 展开更多
关键词 Oviraptoridae jiangxisaurus Nanxiong Formation Upper Cretaceous Ganzhou Basin jiangxi Province
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猪繁殖与呼吸综合征病毒流行株Jiangxi-3的全基因组序列分析 被引量:3
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作者 王旭荣 张彩勤 +3 位作者 赵炳武 张春红 杨增岐 宋长绪 《上海交通大学学报(农业科学版)》 2009年第2期101-107,共7页
通过RT-PCR分段扩增PRRSV流行株Jiangxi-3的基因组,参照VR2332序列,根据各片段之间相重叠的区域,将扩增片段的序列依次拼接获得Jiangxi-3完整的全基因组,并通过DNAStar软件对其进行分析。结果表明:Jiangxi-3的Nsp2推导氨基酸发生30个氨... 通过RT-PCR分段扩增PRRSV流行株Jiangxi-3的基因组,参照VR2332序列,根据各片段之间相重叠的区域,将扩增片段的序列依次拼接获得Jiangxi-3完整的全基因组,并通过DNAStar软件对其进行分析。结果表明:Jiangxi-3的Nsp2推导氨基酸发生30个氨基酸的不连续缺失,与HB-1(sh)/2002相比,Nsp2推导的第480位氨基酸由D突变为E,缺失的位置为第481位氨基酸和532~560位氨基酸;Jiangxi-3与2006年Tian Kegong等从江西"高热病"病死猪体内分离的毒株JXA1的各个结构蛋白阅读框的氨基酸同源性为98.0%~100%;Jiangxi-3与HB-1(sh)/2002、VR2332、RespPRRSMLV的Nsp2推导的氨基酸同源性分别为94.7%、77.8%、77.7%,由遗传系统发育树可知与2006年以前分离的毒株相比,Jiangxi-3与HB-1(sh)/2002的亲缘关系较近。说明Jiangxi-3和JXA1极可能由同一毒株HB-1(sh)/2002演化而来。 展开更多
关键词 猪繁殖与呼吸综合征病毒 jiangxi-3 全基因组 序列分析
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猪繁殖与呼吸障碍综合征病毒Nsp2基因缺失株Jiangxi-3灭活疫苗免疫效果评价 被引量:2
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作者 王旭荣 张彩勤 +1 位作者 赵炳武 宋长绪 《中兽医医药杂志》 2010年第3期10-14,共5页
将猪繁殖与呼吸障碍综合征病毒(PRRSV)Nsp2基因缺失株Jiangxi-3的第9代病毒(Jiangxi-3F9)按常规方法制成油佐剂灭活疫苗,经肌肉注射免疫PRRSV和猪圆环病毒(PCV2)抗原与抗体均为阴性的60日龄健康猪,免疫组分别于初次免疫第21和28天、二... 将猪繁殖与呼吸障碍综合征病毒(PRRSV)Nsp2基因缺失株Jiangxi-3的第9代病毒(Jiangxi-3F9)按常规方法制成油佐剂灭活疫苗,经肌肉注射免疫PRRSV和猪圆环病毒(PCV2)抗原与抗体均为阴性的60日龄健康猪,免疫组分别于初次免疫第21和28天、二次免疫第28天(即初次免疫第28天加强免疫1次)用200LD50的Jiangxi-3 F9进行攻毒,同时各组均设立对照组。通过试验动物体温变化、临床症状、血清PRRS抗体和抗原定期检测结果评价灭活疫苗的免疫效果。结果表明,初次免疫第21和28天免疫组攻毒后体温仍然明显升高,而二次免疫第28天免疫组攻毒后体温升高不明显,最高体温约40℃。初次免疫21-28 d免疫组特异性抗体水平持续升高,初次免疫第21天与第28天抗体水平差异显著(0.01<P<0.05);二次免疫后免疫组抗体水平仍持续升高,第28天可达3.105±0.125,二次免疫第28天与初次免疫28天抗体水平差异显著(0.01<P<0.05)。初次免疫第21天和第28天免疫组攻毒后仍能在血清中检出PRRSV抗原,仍表现不同程度的临床症状,而二免第28天的免疫组攻毒后其PRRSV抗原检出率、发病率、死亡率均为0。表明初次免疫第28天加强免疫一次比免疫一次效果好。 展开更多
关键词 猪繁殖与呼吸综合征病毒 NSP2基因 jiangxi-3株 灭活疫苗
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猪繁殖与呼吸障碍综合征病毒Nsp2基因缺失株Jiangxi-3毒力的进一步研究
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作者 王旭荣 张彩勤 +1 位作者 赵炳武 宋长绪 《上海交通大学学报(农业科学版)》 2010年第1期46-52,共7页
通过Reed-Muench法检测从江西发生持续高热的病猪体内分离的猪繁殖与呼吸综合征病毒(PRRSV)Nsp2基因缺失株Jiangxi-3第9代(Jiangxi-3F9)的病毒滴度;将此毒株接种于PRRSV和猪圆环病毒2型(PCV2)抗原与抗体均为阴性的60日龄健康猪进行猪半... 通过Reed-Muench法检测从江西发生持续高热的病猪体内分离的猪繁殖与呼吸综合征病毒(PRRSV)Nsp2基因缺失株Jiangxi-3第9代(Jiangxi-3F9)的病毒滴度;将此毒株接种于PRRSV和猪圆环病毒2型(PCV2)抗原与抗体均为阴性的60日龄健康猪进行猪半数致死量(LD50)的测定,并且对LD50试验中存活下来的试验猪再次进行较大剂量的攻毒试验,另将病毒接种于PRRSV和PCV2抗原和抗体均为阴性的6月龄健康猪,对所有攻毒试验猪通过体温检测、临床症状观察、RT-PCR、ELISA等方法进一步研究Jiangxi-3F9的毒力。结果表明:Jiangxi-3F9的病毒滴度为105.25TCID50·mL-1,Jiangxi-3F9病毒的LD50为102.·2mL-1。动物试验各项检测结果说明Jiangxi-3F9毒力强。 展开更多
关键词 猪繁殖与呼吸综合征病毒 NSP2 基因缺失 jiangxi-3 毒力
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Tapping Advantages and Expanding International and Domestic Networks for Further Integrating Jiangxi with the Rest of the World——Thriving Foreign Related Work in Jiangxi Province
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作者 Zhang Xuejun Ai Hong 《International Understanding》 2013年第3期54-58,共5页
"…enable Jiangxi to become the example of ecological civilization and pacesetter of building beautiful China,and realize the dream of a prosperous,harmonious and beautiful Jiangxi through our earnest efforts.&qu... "…enable Jiangxi to become the example of ecological civilization and pacesetter of building beautiful China,and realize the dream of a prosperous,harmonious and beautiful Jiangxi through our earnest efforts."Recent years have witnessed vigorous efforts made by the Provincial Foreign Affairs and Overseas Chinese 展开更多
关键词 Thriving Foreign Related Work in jiangxi Province Tapping Advantages and Expanding International and Domestic Networks for Further Integrating jiangxi with the Rest of the World
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Jurassic Intra-plate Basaltic Magmatism in Southeast China:Evidence from Geological and Geochemical Characteristics of the Chebu Gabbroite in Southern Jiangxi Province 被引量:11
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作者 XIE Guiqing MAO Jingwen +4 位作者 HU Ruizhong LI Ruiling JIANG Guohao CAO Jinjian ZHAO Junhong 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2005年第5期662-672,共11页
Geochemical and isotopic investigations have been carded out on the Chebu gabbroite in southern Jiangxi Province, southeast China and these results are compared with gabbro bodies along the coast of Fujian Province in... Geochemical and isotopic investigations have been carded out on the Chebu gabbroite in southern Jiangxi Province, southeast China and these results are compared with gabbro bodies along the coast of Fujian Province in order to understand their magma sources and tectonic implications. The Chebu intrusion formed at the beginning of the Middle Jurassic (172~4.3 Ma). These rocks are Ti-rich and Al-poor in major elements, characterized by strong enrichment in large-ion lithophile elements (LILE) and moderate enrichment in high field strength elements (HFSE) and light rare-earth elements CLREE), without pronounced Nb or Ta anomalies. Age-correlated Sr-Nd isotope ratios show moderately high ranges of (^87Sr/^86Sr)i from 0.7065 to 0.7086 and 0.5124 to 0.5125 of (^143Nd/^144Nd)i. The geochemical characteristics of the Chebu gabbroite suggest that it is notably different from island-arc basalt and similar to intra-plate basaltic rocks. By combining interpretations of its geological and geochemical characteristics and the regional geological development history, the Chebu gabbroitic intrusion is thought to be the product of asthenosphere upwelling and rapid lithosphere extension during a transition of tectonic systems in southeast China. The tectonic environment and source characteristics of the intrusion are different from Cretaceous gabbro bodies along the coast of Fujian Province, The former formed in a tectonic environment of rapid intra-plate lithospheric extension and the source characteristics were of a weakly enriched primitive mantle, whereas the latter originated mainly in a volcanic-magmatic arc extensional tectonic environment and the nature of the source was an enriched mantle with more subduct subducted components. 展开更多
关键词 gabbroite geochemical characteristics geodynamics setting JURASSIC jiangxi southeast China
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Geology, Geochemistry and Origin of the Hongshan Porphyry-Cryptoexplosive Breccia Type Copper Deposit in Huichang County, Jiangxi Prvince 被引量:6
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作者 ZHOU Jiyuan CUI Bingfang CHEN Shizhong 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 1999年第1期19-29,共11页
The Hongshan porphyry-cryptoexplosive breccia type copper deposit occurs in a metamorphic rock series of the Mesoproterozoic Zhongcun Group. Orebodies are distributed inside and outside porphyry-cryptoexplosive brecci... The Hongshan porphyry-cryptoexplosive breccia type copper deposit occurs in a metamorphic rock series of the Mesoproterozoic Zhongcun Group. Orebodies are distributed inside and outside porphyry-cryptoexplosive breccia pipes. The deposit involves five ore-forming types, i.e the porphyry type, cryptoexplosive breccia type, contact-zone veinlet-disseminated type, in-pipe fracture-zone filling-replacement type and out-of-pipe fracture-zone filling-replacement type, forming an ore-forming system of “five ore-forming types within a single rock body”. Fluid inclusion and isotope geochemical studies indicate the following: S, Pb, O and Sr were derived from the lower crust, Nd was derived from the continental crust or depleted mantle and rare earth elements (REE) and trace elements have the crustal source characters; fluids consist dominantly of formation water, metamorphic water and ***meteoric water with a part of magmatic mater, heat came from porphyry while the latter originated from partial melting caused by shear heating in the lower crust and upper mantle. According to its origin the deposit is classified as the hypabyssal and near-surface, meso- and hypothermal copper deposit associated with the late Yanshanian porphyry-cryptoexplosive breccia. 展开更多
关键词 PORPHYRY cryptoexplosive breccia copper deposit Hongshan Huichand jiangxi
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Isotopic Chronological Study of the Huangsha-Tieshanlong Quartz Vein-Type Tungsten Deposit and Timescale of Molybdenum Mineralization in Southern Jiangxi Province,China 被引量:18
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作者 HUANG Fan FENG Chengyou +4 位作者 CHEN Yuchuan YING Lijuan CHEN Zhenghui1 ZENG Zailin QU Wenjun 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2011年第6期1434-1447,共14页
The Huangsha-Tieshanlong quartz-vein tungsten polymetallic ore deposit, located in the northern Pangushan-Tieshanlong tungsten ore field in eastern Ganxian-Yudu prospecting areas of the Yushan metallogenic belt, is a ... The Huangsha-Tieshanlong quartz-vein tungsten polymetallic ore deposit, located in the northern Pangushan-Tieshanlong tungsten ore field in eastern Ganxian-Yudu prospecting areas of the Yushan metallogenic belt, is a well-known tungsten deposit in southern Jiangxi province, China. SHRIMP-determined dating of zircons from the Tieshanlong granite yields ages of 168.1±2.1 Ma (n=11, MSWD-1.3). Rhenium and osmium isotopic dating of molybdenite from the Huangsha quartz-vein tungsten deposit determined by ICP-MS yields a weighted average ages of 153-3 Ma and model ages of 150.22.1 Ma - 155.4-2.3 Ma. The age of the Huangsha tungsten deposit is 10 to 15 Ma later than the Tieshanlong granite, which shows that there might have been another early Late Jurassic magmatic activity between 150 and 160 Ma, a process which is closely related with tungsten mineralization in this area. The Tieshanlong granite, the Hnangsha tungsten deposit and the Pangushan-Tieshanlong ore field were all formed around 150-170 Ma, belonging to products of a Mesozoic second large-scale mineralization. According to the collected molybdenite Re-Os dating results in southern Jiangxi province, the timescale of the associated molybdenum mineralization is 2-6 Ma in the tungsten deposit and the timescale of independent molybdenum mineralization is 1-4 Ma, implying the complexity of tungsten mineralization. Times of molybdenum mineralization are mainly concentrated in the Yanshanian, which includes three stages of 133-135 Ma, 150-162 Ma, and 166-170 Ma, respectively. The 150-162 Ma-stage is in accordance with ages of large-scale WoSn mineralization, which is mainly molybdenum mineralization characterized by associated molybdenum mineralization with development of an even greater-intensity independent molybdenum mineralization. Independent molybdenum mineralization occurred before and after large-scale W-Sn mineralization, which indicates that favorable prospecting period for molybdenum may be in Cretaceous and early late Jurassic. 展开更多
关键词 SHRIMP zircon U-Pb molybdenite Re-Os ages TIMESCALE granite quartz vein-type tungsten deposit Huangsha Tieshanlong jiangxi
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A New Somphospondylan Sauropod (Dinosauria, Titanosauriformes) from the Late Cretaceous of Ganzhou, Jiangxi Province of Southern China 被引量:5
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作者 Lü Junchang YI Laiping +1 位作者 ZHONG Hui WEI Xuefang 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2013年第3期678-685,共8页
A new somphospondylan sauropod (Dinosauria, Titanosauriformes): Gannansaurus sinensis gen. et sp. nov. from the Late Cretaceous Nanxiong Formation of Ganzhou Basin, Jiangxi Province of southern China is erected bas... A new somphospondylan sauropod (Dinosauria, Titanosauriformes): Gannansaurus sinensis gen. et sp. nov. from the Late Cretaceous Nanxiong Formation of Ganzhou Basin, Jiangxi Province of southern China is erected based on one nearly complete dorsal vertebra and a mid-caudal vertebra. It is characterized by two centroprezygapophyseal lamina fossae; large, square-shaped concavity formed by centroprezygapophyseal lamina and dorsal margin of the centrum; large infraparapophyseal fossa; three openings present within the large lateral concavity, which occupy 65% length of the centrum; the posterior centroparapophyseal lamina (PCPL) and the anterior centroparapophyseal lamina (ACPL) weakly developed; the posterior centrodiapophyseal lamina (PCDL) separated by an infradiapophyseal fossa into two branches dorsally; parapophyseal and diapophyseal laminae cross to form "K" configuration. It shares some characters with the Early Cretaceous form-Euhelopus, indicating that it is more closely related to Euhelopus rather than to other titanosauriform sauropods. This means Gannansaurus may have a close phylogenetic relationship with Euhelopus. 展开更多
关键词 GANZHOU jiangxi Province Late Cretaceous Gannansaurus Somphospondyli TITANOSAURIFORMES
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Mineralization Styles and Genesis of the Yinkeng Au-Ag-Pb-Zn-Cu-Mn Polymetallic Orefield, Southern Jiangxi Province, SE China: Evidence from Geology, Fluid Inclusions, Isotopes and Chronology 被引量:14
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作者 FENG Chengyou LI Daxin +2 位作者 ZENG Zailin ZHANG Dequan SHE Hongquan 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2014年第3期825-844,共20页
The Yinkeng orefield in Yudu County,Jiangxi Province,SE China,is a zone of concentrated Au-Ag-Pb-Zn-Cu-Mn polymetallic ores.Based on summing up basic geology and ore geology of the orefieid,the polymetallic deposits i... The Yinkeng orefield in Yudu County,Jiangxi Province,SE China,is a zone of concentrated Au-Ag-Pb-Zn-Cu-Mn polymetallic ores.Based on summing up basic geology and ore geology of the orefieid,the polymetallic deposits in the orefield have been divided into seven major substyles according to their occurring positions and control factors.The ore-forming fluid inclusion styles in the orefield include those of two-phase fluid,liquid CO2-bearing three-phase and daughter mineral-bearing multi-phase.The homogenization temperatures range from 382° to 122℃,falling into five clusters of 370° to 390°,300° to 360°,230° to 300°,210° to 290° and 120° to 200°,and the clusters of 300° to 360°,230° to 300° and 120° to 200° are three major mineralization stages,with fluid salinity peaks from 4.14% to 7.31%,2.07% to 7.31% and 0.53% to 3.90%,respectively.The ore-forming fluids are mainly type of NaCl-H2O with medium to high density (0.74-1.02 g/cm3),or CO2-bearing NaCl-H2O with medium to low density (0.18-0.79 g/cm3).The fluid salinity and density both show a decline tendency with decreasing temperature.According to the measurement and calculation of Hand O-isotopic compositions in the quartz of the quartz-sulfide veins,δDV-SMOW of the ore-forming fluid is from-84‰ to-54‰,and δ18OV-SMOW of that is from 6.75‰ to 9.21‰,indicating a magmatic fluid.The δ34SV-CDT of sulfides in the ores fall into two groups,one is from-4.4‰ to 2.2‰ with average of-1.42‰,and the other from 18.8‰ to 21.6‰ with average of 19.8‰.The S-isotopic data shows one peak at-4.4‰ to 2.2‰ (meaning-1.42‰) suggesting a simple magmatic sulfur source.The ore Pbisotopic ratios are 206pb/204pb from 17.817 to 17.983,207pb/204pb from 15.470 to 15.620 and 208pb/204pb from 38.072 to 38.481,indicating characteristics of mantle-derived lead.The data show that the major ore deposits in the orefield have a magmatic-hydrothermal genesis and that the SHRIMP zircon age of the granodiorite porphyry,closely related to the mineralization,is 151.2±4.2 Ma (MSWD =1.3),which can represent the formation ages of the ores and intrusion rocks.The study aids understanding of the ore-forming processes of the major metallic ore deposits in the orefield. 展开更多
关键词 Ore geology geochemistry fluid inclusion SHRIMP zircon U-Pb dating ore genesis Carboniferous jiangxi Province
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Chronology of the Tungsten Deposits in Southern Jiangxi Province, and Episodes and Zonation of the Regional W-Sn Mineralization-Evidence from High-precision Zircon U-Pb, Molybdenite Re-Os and Muscovite Ar-Ar Ages 被引量:9
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作者 FENG Chengyou ZHANG Dequan +1 位作者 ZENG Zailind WANG Song 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2012年第3期555-567,共13页
Previous studies have obtained some petrogenetic and metallogenic chronological data with SHRIMP (sensitive high-resolution ion microprobe) zircon U-Pb, zircon LA-ICPMS (laser-ablation-inductively coupled plasma ma... Previous studies have obtained some petrogenetic and metallogenic chronological data with SHRIMP (sensitive high-resolution ion microprobe) zircon U-Pb, zircon LA-ICPMS (laser-ablation-inductively coupled plasma mass spectroscopy) U-Pb, molybdenite Re-Os isochron and muscovite Ar-Ar methods in southern Jiangxi Province and its adjacent areas. Based on these, the purpose of this paper is to study the petrogenetic and metallogenic ages and their time gap for different genetic types of W-Sn deposits, and thus to research their numerous episodes, zonal arrangement and their geodynamic background. The result shows that the large-scale W-Sn mineralization in southern Jiangxi Province occurred in the middle to late Jurassic (170-150 Ma), the skarn W-Sn-polymetallic deposits formed much earlier (170-161 Ma), and all of the wolframite-quartz vein type, greisen type, altered granite type and fractured zone type tungsten deposits formed in the late Jurassic (160-150 Ma). In one ore field or ore district, greisen type tungsten deposits formed earlier than quartz vein type ones hosted in the endoor exo-contact zone; and quartz vein type hosted in the endocontact zone formed earlier than that of exocontact zone. There is no significant time difference between tungstentin mineralization and its intimately associated parent granite emplacement (1-6 Ma). They all formed in the same rock-forming and ore-forming system and under the same geodynamic setting. Regionally, rock-forming and ore-forming processes of the W-Sn deposits in the Nanling region (include southern Jiangxi Province, southern Hunan Province, northern Guangdong Province and eastern Guangxi Zhuang Autonomous Region) exhibit numerous episodes. The mineralization in the Nanling region mainly occurred at (240-210) Ma, (170-150) Ma and (130-90) Ma. The tungsten-tin deposits in this region are centered by the largest scale in southern Jiangxi Province and southern Hunan Province, and become small in the east, west, south and north directions. This displays a zonal arrangement and temporal and spatial distribution regularity. Integrated with the latest research results, it is concluded that the W-Sn mineralization in southern Jiangxi Province and its adjacent areas corresponds to the second large-scale mineralization in South China. The Indosinian W-Sn mineralization formed under the extensional tectonic regime between collisional compressional stages, while the Yanshanian large-scale petrogenetic and metallogenic processes occurred in the Jurassic intraplate extensional geodynamic setting of lithosphere extension. 展开更多
关键词 isotopic chronology mutiple episodes of mineralization geodynamics W-Sn deposit Southern jiangxi NANLING
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Precise Dating and Geological Significance of the Caledonian Shangyou Pluton in South Jiangxi Province 被引量:6
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作者 MAO Jianren ZENG Qingtao +3 位作者 LI Zilong HU Qing ZHAO Xilin YE Haimin 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2008年第2期399-408,共10页
The zircon SHRIMP dating age for the Shangyou granites is 464±11 Ma. The geological feature of the pluton is consistent with the isotopic age, which shows that it is a product of Caledonian orogenesis. The Shangy... The zircon SHRIMP dating age for the Shangyou granites is 464±11 Ma. The geological feature of the pluton is consistent with the isotopic age, which shows that it is a product of Caledonian orogenesis. The Shangyou granites are regarded as peraluminous crust-derived granites to possess the typical geochemical characteristics of calc-alkaline rocks on the active continental margin with enriched Si, K, Al (A/CNK -- 1.11 on average), HREE, Rb, U, Th and heavily depleted V, Cr, Co, Ni, as well as Ti-Y, Nb-Ta, Zr, Sr, P and Ba, to be commonly corundum normative (av C -- 1.44). The Shangyou granites with higher 87Sr/86Sr ratios (0.707126-0.712186), ENd(t) values (-7.29 to -10.22) and (tDM) values (1.52-1.63 Ga), which are considered to result from partial melting of continental crust metamorphic sedimentary rocks with relatively low of crust maturation degree corresponding to the Middle Proterozoic, to have some possible contributions of mantle-derived components. The Shangyou granites are regarded as post-collision granites, which were formed in a transitional tectonic setting from compression to extension in the Middle Ordovician period after the Yangtze plate was subducted beneath the Cathaysian plate. The Ar-Ar total ages of K-feldspar and biotite are 292.1 Ma and 295.5 Ma respectively, which have recorded information of a late-stage thermal alteration event. 展开更多
关键词 granite precise dating geological significance CALEDONIAN South jiangxi Province
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Factors and mechanism driving the land-use conversion in Jiangxi Province 被引量:4
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作者 ZHAN Jinyan SHI Nana +1 位作者 HE Shujin LIN Yingzhi 《Journal of Geographical Sciences》 SCIE CSCD 2010年第4期525-539,共15页
This article explores the factors and mechanism driving the land-use conversion at regional level by developing and using an econometric approach which is called the simultaneous equations model (SEM). A case study ... This article explores the factors and mechanism driving the land-use conversion at regional level by developing and using an econometric approach which is called the simultaneous equations model (SEM). A case study in Jiangxi Province of China is conducted by establishing the SEM, which consists of three equations including agricultural production, land conversion of cultivated land to built-up area and land conversion of cultivated land to forest cover/grassland from 1988 to 2005. And then this paper employs the method of piecewise estimation to represent the influences of the factors such as population, society, economy, location and geophysical conditions on the process of land-use conversion in Jiangxi Province. Estimation results show that population is a predominant factor driving the land-use conversion at counties, while social and economic factors are determinant factors in the short term for the entire Jiangxi Province. Specifically, the size of agricultural population and the magnitude of agricultural input determine the agricultural production to a large extent; population size, plain area proportion at counties and land management policies together affect the direction and magnitude of conversion between cultivated land and built-up area; agricultural population proportion, terrain slope, grain production and non-agricultural industry promote the conversion of cultivated land to forest cover/grassland. Furthermore, the explored mechanism also reveals the underlying causes of the land use changes driven by a series of factors in Jiangxi Province. Finally, this paper concludes that factors proven to play an important role in driving the land-use conversion need to be considered when the land management agencies make out the land use planning to optimize the land use, expand the agricultural production, and conserve the cultivated land. 展开更多
关键词 land use land-use conversion MECHANISM econometric model simultaneous equations model jiangxi Province
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Ore-forming Fluid Systems and Mineralization in the Eastern Jiangnan Uplift in the Border Area of Anhui and Jiangxi Provinces, China 被引量:3
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作者 ZHOUTaofa YUANFeng +4 位作者 HOUMingjin FAnYu DUJianguo ZHUGuang YUEShucang 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2004年第2期380-386,共7页
Obvious differences in mineralization characteristics exist between the southern and northern parts of the eastern part of the Jiangnan Uplift in northern Jiangxi Province and southern Anhui Province. The regional met... Obvious differences in mineralization characteristics exist between the southern and northern parts of the eastern part of the Jiangnan Uplift in northern Jiangxi Province and southern Anhui Province. The regional metallogeny is discussed, and the ore-forming fluid systems are classified in this article. It is proposed that the fluid ore-forming activities in the Jiangnan Uplift both in northern Jiangxi and southern Anhui have close relationships with the crust-mantle interaction and magmatic-tectonic activities. The types and scales of the mineralization on the both sides of the eastern Jiangnan Uplift were determined by fluid ore-forming systems and geological backgrounds. 展开更多
关键词 ore-forming fluid systems MINERALIZATION Jiangnan Uplift ANHUI northern jiangxi
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Petrogenesis and Geodynamic Implications of Late Jurassic Diorite Porphyry in the Neoproterozoic Ophiolitic Mélange of NE Jiangxi (South China) 被引量:3
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作者 WANG Xinshui GAO Jun +2 位作者 LI Jilei JIANG Tuo XUE Shengchao 《Acta Geologica Sinica(English Edition)》 CAS CSCD 2018年第3期1008-1023,共16页
Mesozoic magmatism is widespread in the eastern South China Block and has a close genetic relationship with intensive polymetallic mineralization. However, proper tectonic driver remains elusive to reconcile the broad... Mesozoic magmatism is widespread in the eastern South China Block and has a close genetic relationship with intensive polymetallic mineralization. However, proper tectonic driver remains elusive to reconcile the broad intracontinental magmatic province. This study presents integrated zircon U-Pb dating, Hf isotopes and whole-rock geochemistry of the Xiwan dioritic porphyry in the NE Jiangxi ophiolitic mélange. Zircon U-Pb dating by SIMS and LA-ICP-MS methods yielded an emplacement age of ~160 Ma for the Xiwan diorite, confirming its inclusion into the Mesozoic magmatic province in SE China, instead of a component of the Neoproterozoic ophiolitic mélange genetically. The dioritic rocks have low Si02(58.08 wt%-59.15 wt%), and high NaO(5.00 wt%-5.21 wt%) and MgO(4.60 wt%-5.24 wt%) contents with low TFeO/MgO ratios(1.02-1.09). They show an adakitic geochemical affinity but exhibit relatively low Sr/Y ratios(24.8-31.1) and high Y contents(14.6-18.3 ppm) compared to the Dexing adakitic porphyries. In addition, the Xiwan diorites have moderately evolved zircon Hf isotopic compositions(ε(t)=-6.1--0.1; T=1597-1219 Ma). These elemental and isotopic signatures suggest that the Xiwan diorite formed through partial melting of a remnant arc lower crust(i.e., early Neoproterozoic mafic arc-related rocks) in response to the underplating of coeval mafic magmas. In conjunction with the temporal-spatial distribution and complex geochemical characteristics of the Mesozoic magmatism, our case study attests to the feasibility of a flat-slab subduction model in developing the broad intracontinental magmatic province in SE China. The flat-slab delamination tends to trigger an asthenospheric upwelling and thus results in extensive partial melting of the overlying lithospheric mantle and lower crustal materials in an extensional setting during the Mesozoic. 展开更多
关键词 ADAKITE flat-slab subduction Mesozoic NE jiangxi South China Block
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Constitution Water in Mantle-derived Megacryst and Xenolith Pyroxene of an Ultrabasic Pipe in Anyuan, Jiangxi 被引量:2
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作者 叶松 张保民 +2 位作者 狄敬如 杨眉 叶德隆 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2002年第3期339-342,共4页
This paper studies the hydrous facies of mantle-derived megacrystclinopyroxenes and pyroxenes of xenoliths of pyroxenolite and spinel peridotite as well as garnetpyroxenolite in a kimberlitic lamprophyre pipe in Anyua... This paper studies the hydrous facies of mantle-derived megacrystclinopyroxenes and pyroxenes of xenoliths of pyroxenolite and spinel peridotite as well as garnetpyroxenolite in a kimberlitic lamprophyre pipe in Anyuan, Jiangxi, by Fourier Transform Infrared(FTIR). It explores the relationship between the water content of pyroxene on the one hand and itscomposition and source depths on the other hand. All the samples contain constitution water. Spectraof the clinopyroxene are dominated by two groups of bands: 3607-3630 cm^(-1) and 3522-3542 cm^(-1).Spectra of the orthopy-roxene are dominated by three groups of bands: 3410-3424 cm^(-1), 3510-3516cm^(-1) and 3560-3595 cm^(-1). The water content of the clinopyroxenes has a positive correlationwith their FeO and Al_2O_3 contents. The source depths of mantle-derived clinopyroxene megacrysts,pyroxenolite, spinel peritotite and garnet pyroxenelite increase gradually in order. The Al_2O_3 andwater contents of four pyroxenes have similar correlation with the source depths. 展开更多
关键词 PYROXENE constitution water infrared spectroscopy kimberliticlamprophyre upper mantle jiangxi Anyuan
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