柯树北岩体岩石谱系单位的建立及构造环境分析

柯树北岩体为陆壳改造型（S型）花岗岩，具有结构和成分演化序列，运用岩石结构列序法，将其划分为6个单元，归并为1个超单位，按侵入体空间展布形式，岩体地质学，岩石学，构造地球化学等资料，提出了岩浆侵位是受区域拉张应力控制的认识。     

Zinc-rich Pyrite from the TAG Active Mound, the TAG Hydrotherma Field, Mid-Atlantic Ridge

Abstract: Pyrite rich in Zn, up to 3.1 wt%, was found in the TAG active mound of the TAG hydrothermal field, the slow-spreading Mid-Atlantic Ridge at 26°08'N and 44°49'W. The Zn-rich pyrite is characterized by an optical homogeneity, a homogeneous distribution of Zn in the back-scattered electron images, both at a magnification of about 500, a negative correlation between Fe and Zn contents of the pyrite and a rather small unit cell edge (a₀ = 5.4117 ± 0.0008Å), strongly indicating that the detected Zn is present in the pyrite in solid solution. Such Zn concentrations are observed exclusively in dendritic pyrite, suggesting that the Znrich pyrite grew from hydrothermal fluids of a high degree of supersaturation due to quenching on the seafloor.     

一种基于马尔可夫随机场的影像纹理分类方法

针对纹理影像先估计出其马尔可夫随机场参数，后运用多元统计分析中模糊聚类分析的数学方法进行定量分类，从而为解决划分上的不确定性现象找出描述方法，获得客观的分类结果     

Analysis of spatial relationships among geomorphic,petrographic and structural characteristics of the dartmoor tors

The granite tors of Dartmoor are characterized by using the regional spatial patterns of 21 geomorphic, petrographic, and structural variables. The data were derived from topographic maps, field measurement, and laboratory analysis of rock samples collected in the field. Identification of spatial patterns and comparison of patterns between variables were made on contour maps generated from the data using ARC/INFO. Three tor types—summit tors, valleyside tors, and spur tors—are semiquantitatively characterized using these data and procedures. The three types of tors are distinguished with respect to variations in relative relief, joint spacing and joint type, rock texture, grain size, and composition. Summit tors have the highest relative relief (mean: 125·7 m), contain the most potassium feldspar (>30 per cent), and have the most widely-spaced primary vertical (>300 cm) and secondary horizontal joints (> 10 cm). The rocks are the most megacrystic (> 15 per cent) and the coarsest grained. Plagioclase is also abundant in summit tors. Valleyside tors have the lowest relative relief (mean: 72·9 m) and the most widely-spaced horizontal joints (primary, 60-200 cm; secondary, > 10 cm). Grain size, vertical joint spacing, and quartz and potassium feldspar abundances are intermediate. The shapes of valleyside tors are controlled by horizontal joints and the rocks are either very feebly magcrystic or equigranular in texture. Spur tors have intermediate relative relief (mean: 115·4 m), the narrowest joint spacing (vertical joints, < 200 cm, 50-75 cm; horizontal joints <60 cm, < 10 cm) and the finest grain. In addition, the rocks are feebly magacrystic.     

空间灰度相关在影像纹理分类中的应用及分析

介绍了空间灰度相关法的１１个纹理特征。试验表明，仅３个是描述性强的纹理特征。通过用ｔ检验法来分类纹理，发现该方法具有良好的“去伪”特性，可辅助其它纹理分类。     

华南内生铀矿石结构的新认识及其成因意义

在华南374和331花岗岩型铀矿床矿石内及人工合成沥青铀矿的模拟实验中均发现有针状沥青铀矿与沥青铀矿球粒紧密共生的现象。结合对沥青铀矿球粒的形态、结构、粒度及共生矿物等特征的研究,作者确认沥青铀矿球粒是球状结晶的表现,而针状及长柱状沥青铀矿则是铀氧化物相变中间产物(α-U_2O_8或β-U_3O_8)的假象。沥青铀矿的高温高压人工模拟实验表明,一些沥青铀矿在快速结晶生长过程中,由于结晶生长的限制而具有非生物成因的显微草莓状和花瓣状结构特征。     

大春河—一朵云断裂断层泥中石英表面 SEM 特征的分析研究

大春河—一朵云断裂位于昆明市的东南侧,沿断层线断错水系、土林地貌发育,河流的最大左旋扭动距离达两公里。断层泥中石英碎砾的SEM研究表明:断层的强烈活动时期为早更新世晚期和晚更新世,全新世断层的活动有所减弱;晚更新世以来断裂的活动方式以蠕滑为主。     

SAR image classification based on its texture features

SAR images not only have the characteristics of all-ay, all-eather, but also provide object infor-mation which is different from visible and infrared sensors. However, SAR images have some faults, such as more speckles and fewer bands. The au-thors conducted the experiments of texture statistics analysis on SAR im-age features in order to improve the accuracy of SAR image interpretation.It is found that the texture analysis is an effective method for improving the accuracy of the SAR image interpreta-tion.     

西天山那拉提构造带及邻区几个地层问题的讨论

西天山—伊宁地区以独特的结构特征和关键的大地构造部位,历来成为中外地质学家所关注、研究的重要地区,而那拉提构造带及邻区又在西天山—伊宁地区占有举足轻重的地位。由于客观条件的制约,那拉提构造带及西天山造山带在基础地质的许多方面存在不少问题,直接影响到对天山造山带和伊犁盆地的正确认识。笔者根据近十年来在那拉提带及邻区进行10个1∶5万区调填图和收集到的其它资料,对该区几个重要层位的时代、大哈拉军山火山岩系的形成背景、蛇绿岩和蓝闪片岩的产出特征以及该区的结构、构造单元划分和发展演化的动力学机制进行了讨论,其中的许多认识和看法将对该区的进一步研究产生推动作用。     

一种纹理特征融合分类算法

分别利用多通道Gabor滤波器和马尔可夫随机场模型对纹理图像进行分析，得到两组特征影像。将上述两组特征影像进行融合，最后利用融合后的数据实现图像的分类。实验证明，基于上述方法的纹理特征融合分类算法大大提高了图像的分类精度。