沉积岩中蒙脱石-伊利石混层矿物的SEM/EDAX分析   总被引：1，自引：1，他引：1  

奚可棠 《矿物学报》1986,(3)

本文利用扫描电子显微镜与X射线能量色散分析联合法,对沉积岩中蒙脱石-伊利石混层矿物进行系统微区成分分析,求出混合层中伊利石的百分含量。  相似文献   

Limestone weathering in Eastern Australia. Part 2: Surface micromorphology study     

C. Moses  A. P. Spate  D. I. Smith  M. A. Greenaway 《地球表面变化过程与地形》1995,20(6):501-514

Results from long term microerosion meter (MEM) studies indicate that microenvironments are characterized by different erosion rates. A complementary study, carried out on the same sites, examines the microscale morphology in each environment. Optical and scanning electron microscopy were used to identify a range of features thought to reflect different processes. Under subaerial conditions micromorphology is dominated by biological weathering features owing to the presence of microflora. Sites permanently covered by soil or stream water have only dissolution etch features, though stream sites may exhibit microfractures. Sites with periodic exposure exhibit both dissolution and biological etch features. The natural environment is more accurately reflected by allowing some microflora colonization of MEM sites rather than preventing colonization by artificial means.  相似文献   

电子探针分析与系列矿物研究   总被引：2，自引：0，他引：2  

毛水和 《矿物学报》1987,(2)

本文论述以电子探针为主要测试手段对下述几种系列矿物的研究成果:(1)铂族元素系列矿物的研究(包括Ru-Os-Fe金属互化物矿物系列和RuAs_2-OsAs_2二元固溶体矿物系);(2)Au-Cu系列矿物的研究;(3)黝铜矿族矿物的研究。  相似文献   

罕见的蓝色饵-纳透闪石研究     

廖尚宜  金萍 《矿物岩石地球化学通报》2001,20(3):190-193

尽管角闪石在地壳中大量存在 ,但是蓝色钾 钠透闪石却是角闪石中的稀有品种。本文采用X射粉晶线衍射和晶胞参数计算 ,确定该矿物为蓝色的钾 钠透闪石 ,用电子探针 (EMPA)精确分析了它的化学成分 ,确定为钾 钠透闪石 ,而不是蓝色软玉 (即不是透闪石或阳起石 )。  相似文献   

Parajamesonite revisited: background of the discreditation of an enigmatic mineral species     

Gábor Papp  Alan J. Criddle  Chris J. Stanley  László Kriston  Géza Nagy 《Swiss Journal of Geoscience》2007,100(3):495-502

  相似文献   

贵州兴仁滥木厂汞铊矿床矿物扫描电镜研究   总被引：2，自引：0，他引：2  

张杰  孙传敏  张宝贵  杨恩林 《矿物学报》2007,27(3):505-510

贵州兴仁滥木厂汞、铊矿床，矿体主要产出于上二叠龙潭组和长兴组泥岩、灰岩、泥质灰岩、硅质岩、煤岩和碳质页岩等混杂岩系。利用扫描电子显微镜及能谱分析等研究手段，对该矿床的物质组成、矿物成分特征及微观特征进行了探讨，为成矿元素汞、铊的赋存状态，生物成矿特征研究等提供矿物学资料。  相似文献   

基于NOAA/POES卫星观测的磁层相对论电子起源的初探   总被引：1，自引：0，他引：1       下载免费PDF全文

谢伦  涂蔚超  张辉  濮祖荫 《地球物理学报》2007,50(6):1632-1638

本文利用低高度极轨卫星NOAA/POES的观测数据，并结合ACE卫星和Polar卫星的观测结果，研究分析了磁层相对论电子的起源. NOAA/POES卫星对于不同地磁活动时期相对论电子的分布和起源进行了较为详细观测, 分析结果表明（1） 亚暴期间注入磁层的能量电子可以为与磁暴相关的磁层高能电子暴提供种子电子；（2）太阳质子事件期间太阳风中的能量电子也可以为磁层中的相对论电子提供所需要的源.  相似文献   

煤中显微裂隙的成因类型及其研究意义   总被引：8，自引：0，他引：8  

张慧  王晓刚  员争荣  郝琦 《岩石矿物学杂志》2002,21(3):278-284

分析、归纳了大量的扫描电子显微镜观测结果，以煤岩学、构造地质学研究为基础，依据煤中显微裂隙的形态，大小、排列组合等发育特征，将内生裂隙进一步划分为失水裂隙，缩聚裂隙、静压裂隙，将外生裂隙进一步划分为张性裂隙，压性裂隙，剪性裂隙，松弛裂隙，描述了各类隙的发育特征，探讨了裂隙的演化，识别和影响裂隙发育的因素，裂隙成因类型的研究，有助于判断不同裂隙对煤储层渗透率的贡献。  相似文献   

绿柱石的辐照赋色与效应   总被引：4，自引：0，他引：4  

向长金  亓利剑  周开灿  罗永安 《地质科技情报》2001,20(4):73-76

利用电子加速器为辐照源，对四川，新疆等产的无色绿柱石进行了辐照改色处理。在改色实验中，对辐照源的输出功率，电子能量，扫描面积，扫描速度，辐照剂量等参数，及辐照后样品的辐照效应，环境适应性，时效考验等特性进行了较系统的实验研究，并拟定出一套适合不同成因的无色绿柱石辐照改色的优选方案，对绿柱石的辐照机制和应效进行了探讨。  相似文献   

The use of GPS arrays in detecting shock-acoustic waves generated during rocket launchings     

E. L. Afraimovich  E. A. Kosogorov  N. P. Perevalova  A. V. Plotnikov 《Journal of Atmospheric and Solar》2001,63(18)

This paper is concerned with the parameters of shock-acoustic waves (SAW) generated during rocket launchings. We have developed the interferometric method for determining SAW parameters (including angular characteristics of the wave vector, and the SAW phase velocity, as well as the direction towards the source) using GPS-arrays. Contrary to the conventional radio-probing techniques, the proposed method provides an estimate of SAW parameters without a priori information about the site and time of a rocket launching. The application of the method is illustrated by a case study of ionospheric effects from launchings of rockets PROTON, SOYUZ and SPACE SHUTTLE from Baikonur and Kennedy Space Center cosmodromes in 1998–2000. In spite of a difference of rocket characteristics, the ionospheric response for all launchings had the character of an N-wave corresponding to the form of a shock wave. The SAW period T is 270–360 s, and the amplitude exceeds the standard deviation of total electron content background fluctuations in this range of periods under quiet and moderate geomagnetic conditions by factors of 2–5 as a minimum. The angle of elevation of the SAW wave vector varies from 30° to 60°, and the SAW phase velocity (900–1200 m/s) approaches the sound velocity at heights of the ionospheric F-region maximum. The position of the SAW source, inferred by neglecting refraction corrections, corresponds to the segment of the rockets path at a distance no less than 200–900 km from the launch pad, and to the rocket flying altitude no less than 100 km. Our data are consistent with the existing view that SAW are generated during a nearly horizontal flight of the rocket with its engine in operation in the acceleration segment of the path at 100–130 km altitudes in the lower atmosphere.  相似文献