Formation Mechanism of Maceral and Mineral Compositions of the“Barkinite”Liptobiolith from the Jinshan Mine,Anhui Province,China     

SUN Yuzhuang  ZHAO Cunliang  LIN Mingyue  JIN Kankun  DING Shuli 《《地质学报》英文版》2010,84(3):643-653

<正>In order to study the accumulation mechanism of"barkinite",eight Late Permian channel benches(approximately 15-cm across and 10-cm deep) were taken from the Jinshan Mine,Anhui Province,China.The samples were analyzed by microscopical and geochemical methods.The microscopical observations indicate that the occurrence modes of"barkinite"in this area are different from those in other areas of China.The ratios of structureless"barkinite"are much higher in the Jinshan Mine,probably due to the flow-water and marine influenced environments.Furthermore, vitrinite macerals also show a strong fluorescence.The vitrinite fluorescence characteristics have not been observed in the Permian"barkinite"coals from northern China.The composition and variation of minerals in the column section also showed that the swamps in the study area were seriously influenced by seawater in the early and late stage during the peat accumulation.  相似文献   

江西北武夷某多金属矿区复电阻率法勘查效果   总被引：1，自引：1，他引：0  

张焱孙  张虎生  邢应太  杜瑞云 《物探与化探》2010,34(5)

利用V8仪器在江西北武夷某多金属矿区进行金属矿产勘查,着重分析了矿区0线实施复电阻率(CR)法所获电性参数异常与剖面地电结构特征,结合区内地层分布和成矿条件,充分利用CR资料勾绘出深部矿(化)体的平面投影形态。物探推断成果与钻探结果基本吻合,对后续详查施工起到了积极的指导作用。  相似文献   

Crustal Composition of China Continent Constrained from Heat Flow Data and Helium Isotope Ratio of Underground Fluid   总被引：3，自引：1，他引：2  

WANG Yang  and SUN Zhiming 《《地质学报》英文版》2010,84(1):178-184

Based on conservation of energy principle and heat flow data in China continent, the upper limit of 1.3 μW/m3 heat production is obtained for continental crust in China. Furthermore, using the data of heat flow and helium isotope ratio of underground fluid, the heat productions of different tectonic units in China continent are estimated in range of 0.58–1.12 μW/m3 with a median of 0.85 μW/m3. Accordingly, the contents of U, Th and K2O in China crust are in ranges of 0.83–1.76 μg/g, 3.16–6.69 μg/g, and 1.0%–2.12%, respectively. These results indicate that the abundance of radioactive elements in the crust of China continent is much higher than that of Archean crust; and this fact implies China’s continental crust is much evolved in chemical composition. Meanwhile, significant lateral variation of crustal composition is also exhibited among different tectonic units in China continent. The crust of eastern China is much enriched in incompatible elements such as U, Th and K than that of western China; and the crust of orogenic belts is more enriched than that of platform regions. It can also be inferred that the crusts of eastern China and orogenic belts are much felsic than those of western China and platform regions, respectively, derived from the positive correlation between the heat production and SiO2 content of bulk crust. This deduction is consistent with the results derived from the crustal seismic velocity data in China. According to the facts of the lower seismic velocity of China than the average value of global crust, and the higher heat production of China continent compared with global crust composition models published by previous studies, it is deduced that the average composition models of global continent crust by Rudnick and Fountain (1995), Rudnick and Gao (2003), Weaver and Tarney (1984), Shaw et al. (1986), and Wedepohl (1995) overestimate the abundance of incompatible elements such as U, Th and K of continental crust.  相似文献   

广西铜聋山铜铅锌矿床遥感地质信息研究          下载免费PDF全文

成永生 《地质找矿论丛》2010,25(4):351-355

针对铜聋山矿区的地质特征及成矿地质条件,应用卫星遥感技术方法对该区进行了综合研究。利用美国陆地卫星Landsat-5的TM多波段数据对研究区的构造信息进行了综合解译,结合主成分分析与波段比值法对矿化蚀变信息进行了提取。结果表明,该区的主要成矿构造为NE向断裂,线环构造的交汇部位是成矿的最佳环境;遥感矿化蚀变信息得到了有效的增强,与已知矿点具有很好的一致性,能够反映有利的找矿目标。  相似文献   

农安—德惠一带松花江西岸陶粒页岩矿床特征及开发前景     

徐传波  孙立伟  张天翼  屈大鹏 《吉林地质》2010,29(4):66-69

吉林省陶粒页岩的开发已有十余年的历史,主要矿石自然类型为白垩系下统嫩江组、青山口组泥岩、粉砂质泥岩,目前已开发利用的矿床主要分布于农安—德惠一带松花江西岸的切割台地,均以零星开采为主,矿石质量各有差异,本文通过对这一带典型矿床地质特征进行对比研究,展望该区陶粒页岩矿开发前景。  相似文献   

扶余县长春岭油页岩矿床成分特征     

姜福平  崔丹  雷特  罗琛 《吉林地质》2010,29(3):63-65

文章对扶余县长春岭油页岩矿床的矿物成分、化学成分、含油率、微量元素、稀土元素等组分进行了分析,指出了各种组分间的相互关系。  相似文献   

四川名山建山大邑砾岩沉积特征及地层时代   总被引：1，自引：0，他引：1       下载免费PDF全文

莫雄  赵兵 《沉积与特提斯地质》2010,30(4):72-78

详细描述了四川名山建山大邑砾岩实测剖面,讨论了大邑砾岩的岩性组合特征及沉积环境。认为大邑砾岩主要为一套位于风化壳之上的河流-冲积扇沉积,自下而上由细变粗,属于物源区总体不断上升过程中的近源沉积。通过大邑砾岩中的孢粉组合,讨论了其地质时代。该剖面孢粉组合以水龙骨科孢子为主,年代地层归属于新近系上新统。  相似文献   

基于整数小波和非负有序独立成分分析的遥感影像融合     

余先川  安卫杰  倪锋  曹婷婷  龙四亮  刘少华 《地质通报》2010,29(10):1462-1466

结合ICA算法可以去除高阶冗余信息和IWT具有多分辨率、运算速度快的特性,在非负性条件的约束下,提出一种基于整数小波变换和非负有序独立成分分析(IWT-ONICA)的遥感影像融合方法。将该方法用于全色影像和多光谱影像的融合,数理统计(峰值信噪比、扭曲度、熵等)和目视判读结果表明,该方法融合效果优于其他方法,融合结果更加清晰,可视性更好。  相似文献   

Analysis of the monosaccharide composition of fucoidan by precolumn derivation HPLC   总被引：1，自引：0，他引：1  

张晶晶  张全斌  王晶  石学连  张忠山 《中国海洋湖沼学报》2009,27(3):578-582

We developed an HPLC method for analysis of the monosaccharide composition of fucoidans.The fucoidan was hydrolyzed into monosaccharides with 2 mol/L trifluoroacetic acid.Using ribose as the internal standard,the monosaccharide derivatives,obtained with 1-Phenyl-3-methyl-5-pyrazolone(PMP),were separated by reverse-phase HPLC using a gradient elution process,and monitored by ultraviolet detection at 245 nm.In the concentration range of 0.1-2.0 mmol/L,the peak area of each monosaccharide had a good linear rel...  相似文献   

钦州湾及其邻近海域重金属的时空变化特征和影响因素          下载免费PDF全文

林红梅  王伟力  林彩  孙霞  孙秀武 《应用海洋学学报》2020,39(4):490-500

根据2013—2014年在钦州湾及其邻近海域获取的夏、秋、冬、春4个季节的环境调查资料，分析了表层海水中溶解态重金属的时空变化特征，并运用主成分分析法研究了影响重金属分布的因素。结果表明，Cu、Pb、Zn、Cd、Cr、Hg、As含量范围分别为0.214～1.510、nd～0.979、0.132～4.160、0.005～0.106、0.014～2.580、0.012～0.049、1.2～2.2 μg/dm³，各重金属元素含量均处于历史较低水平；夏、秋季重金属的平均含量依次是As>Cu>Zn>Cr>Pb>Cd>Hg，冬、春季则是As>Zn>Cu>Pb>Cr>Cd>Hg；入海径流量受控于降水，使得雨季时Cu、Zn、Cd、Hg、As的含量通常高于干季；东北季风期间大气沉降可能是Pb含量由夏季到春季逐步增高的主要原因；除夏季Pb、Cd和冬季Pb、Cd、Zn外，其它重金属之间具有显著的同源性。陆源输入是钦州湾及其邻近海域重金属的重要来源，咸淡水混合过程（酸碱度变化及物理混合）是影响重金属分布的最主要因素，潮流作用也是影响重金属分布的重要因素。  相似文献