赣西小龙金矿热液活动与成矿作用特征     

杨斌  董国臣  曾书明  孔会磊  刘金元  宋云涛  王伟清 《矿床地质》2011,30(1):125-138

赣西小龙金矿区位于萍乐凹陷带中部竹亭-涧溪深大断裂带附近,矿区内的Au矿化明显受近EW向断裂的控制,与构造活动导致的热液渗透相关.文章在岩相学和地球化学研究的基础上,认为围岩蚀变的特点是以强硅化为主导,伴有轻微的去碳酸盐化和泥化;围岩蚀变是同阶段多期次热液作用的结果,并无明显的分带现象.通过常量元素地球化学特征解析以及...  相似文献   

江西省交通岩土工程信息系统的设计与开发     

嵇其伟 《岩土工程技术》2011,25(4):207-210

交通岩土工程信息系统在国民经济和交通工程建设中发挥着重要作用.利用地理信息系统(GIS)技术和计算机技术构建交通岩土工程信息系统是近年来国内交通领域内的研究热点和前沿之一.江西省交通岩土工程信息系统采用组件式地理信息系统(GIS)和计算机技术,并从系统的软硬件设计、系统总体结构设计、系统的功能设计等方面.探讨了江西省交...  相似文献   

Isotopic Chronological Study of the Huangsha‐Tieshanlong Quartz Vein‐ Type Tungsten Deposit and Timescale of Molybdenum Mineralization in Southern Jiangxi Province,China     

HUANG Fan  FENG Chengyou  CHEN Yuchuan  YING Lijuan  CHEN Zhenghui  ZENG Zailin  QU Wenjun 《《地质学报》英文版》2011,85(6):1434-1447

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 150.2±2.1 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 Huangsha 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 W-Sn 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.  相似文献   

江西于都营脑锰银多金属矿区矿化特征及找矿方向   总被引：2，自引：0，他引：2  

范世祥  张家菁  邓茂春  刘翠辉 《福建地质》2011,30(1):38-45

通过对营脑锰银多金属矿地质特征的综合分析,认为该区存在蚀变岩体型、接触带、破碎带型和风化堆积型4种锰银多金属矿化类型,其原生矿为中低温次火山热液交代-充填型.锰银多金属矿化与燕山期石英闪长玢岩关系密切.  相似文献   

皖南赣北宁国组和胡乐组沉积环境的古盐度特征及其地质意义   总被引：6，自引：0，他引：6  

王海峰  俞剑华 《地层学杂志》1994,18(1):9-16

通过对皖南赣北地区早、中奥陶世宁国组和胡乐组合笔石黑色岩系的相当硼含量和镁铝比值的研究,揭示该时期皖南赣北海盆古海水具有不断淡化的历史;宁国组下部沉积环境的古盐度比宁国组上部以及胡乐组沉积环境的古盐度高;古海水发生明显淡化的转折期是在Ｕ．ａｕｓｔｒｏｄｅｎｔａｔｕｓ带（Ｎｒ）与Ｄ．ｅｌｌｅａｓｅ带（Ｎ８ａ）的界线附近;结合笔石动物群组合面貌的变化,古盐度有可能是早、中奥陶世笔石动物群演替的外界环境因素之一。  相似文献   

Geochemical Characteristics of Two Types of Ores from Jinshan Shear Zone—hosted Gold Deposit,Jiangxi,with a Discussion on the Mechanism of Two—stage Mineralization     

季峻峰  刘英俊等 《中国地球化学学报》1995,14(4):353-360

Two types of gold ores,siliceous mylonite and quartz vein,formed at the first and second stages of mineralization respectively, can be clearly recognized in the shear zone-hosted gold deposit at Jinshan, Jiangxi.Similarity in REE and trace elements between the siliceous mylonite and the country rocks indicates that the ore metals were supplied by the surrounding strata during the first stage of mineralization.On the other hand, as indicated by fluid inclusion data,the ore-forming fluid at the second stage was of meteoric origin and the precipitation of gold was caused by phase separation.  相似文献   

化探分散流异常查证方法探讨     

幸世军 《矿产与地质》2001,15(Z1):480-482

重点阐述了分散流异常与地质相结合在三南区开展异常查证的运用体会,分散流异常在三南成矿区的分布特征以及通过对分散流异常的优选勘查获得了一批较好的成矿信息,提出了异常区内如何开展地质工作的建议.  相似文献   

赣南茶区生态地球化学环境   总被引：2，自引：1，他引：2  

周国华  朱立新  喻劲松  王徽  马生明 《物探与化探》2001,25(4):266-271

初步评价了赣南地区茶树生长的总体生态环境景观条件,着重进行了13个典型茶园的岩-土-茶地球化学调查,研究了茶园基岩、土壤元素地球化学特征,根据土壤有机质、营养元素全量和有效量评价了茶园的营养状况,为茶园生产管理、施肥提供了科学依据。通过与龙井茶元素含量的对比,评价了本区茶叶质量,探讨了茶叶内在品质与地质、地球化学背景的关系。  相似文献   

江西银山铅锌矿床成矿流体特征   总被引：5，自引：0，他引：5       下载免费PDF全文

乐小横  张志辉 《地质找矿论丛》2001,16(1):28-31

银山铅锌矿床产于前震旦系地层中 ,容矿围岩主要为千枚岩 ,矿体呈脉状受构造裂隙控制。流体包裹体及同位素研究表明金属元素及硫主要来自上地幔 ,流体主要是岩浆水。矿床属中低温岩浆热液矿床 ,为燕山期成矿  相似文献   

江西省县(市)域生态环境综合评价   总被引：13，自引：0，他引：13  

林子瑜  徐金山 《华东地质学院学报》2001,24(3):198-204

系统地探讨了江西省生态环境综合评价指标体系，以县（市）区域为基本单元，利用因子分析方法确定各主要生态环境评价因子的权重，进而对全省各县（市）进行生态环境综合评价，确定了生态环境类型，为江西省制定生态经济建设宏观规划，为生态环境的辩证施治，为国民经济发展和环境保护提供客观决策依据。  相似文献