Conditional curvilinear stochastic simulation using pixel-based algorithms

In geology, structures displaying differing local directions of continuity are widespread, a typical example being a flusial depositional system. Conventional pixel-based geostatistical algorithms, may fail to reproduce such curvilinear structures. Conversely, object-based algorithms can reproduce curvilinear shapes but are difficult to condition to dense local data. Local depositional directions as obtained from dipmeter data. 3D seismic data, and geological interpretation represent critical information. An improved pixel-based geostatistical algorithm is proposed to account for such directional information. Case studies demonstrate the potential and limitations of the algorithm.     

管缝式锚杆防治软岩巷道底臌的试验研究

根据对巷道围岩移动趋势的分析，充分考虑到锚杆在垂直于锚杆轴向方向上与围岩的相互作用．将其用于软岩巷道底臌的防治，简化了软岩巷道施工工艺。矿井的实际应用表明支护效果是明显的。     

多媒体创作工具Compel的应用

本文介绍了一种多媒体应用的创作工具。利用这种工具可以编辑和组织文字、图象、图表、声音以及视频等多种媒体元素。并通过媒体链接以及超级链接，完成多媒体应用的制作。同时，也介绍了多媒体应用的播放。     

山东牟平邓格庄金矿的地球化学特征及成因

邓格庄大型石英脉型金矿，分布于燕山期昆嵛山花岗岩体内金牛山断裂带次级断裂中。成矿年龄１１８×１０６ａ，它比容矿岩体冷凝至３５０℃时还晚１２×１０６ａ。成矿深度小于１ｋｍ（约０．７５ｋｍ），而容矿岩体的定位深度大于１３ｋｍ，它们的定位深度差大于１２ｋｍ。成矿流体来自地壳深部，通过水－岩反应又从容矿岩体中萃取一部分金。故此金矿不是传统意义的岩浆期后热液矿床     

山东文登金矿成矿动力学研究

本文通过古应力估算，流体包体研究，应变测量以及矿化蚀变规律研究，探讨了山东文登金矿的动力作用与金成矿的主要关系，认为构造动力作用的金成矿的主要原因，韧性剪切作用向韧－脆性变形作用的过渡过程是金成矿的必要条件之一。     

用土的分形结构确定土的水份特征曲线

运用筛析法和比重计法，分析了宁夏膨胀土的颗粒分布，发现粒径介于0．002～0．1mm的粒度分布是分形的，分维介于2．46～2．67；运用上孔隙分布的分维确定水份特征曲线，得到了很好的结果。此外，还探讨了粒度分形分布的机制。     

分形几何用于岩石损伤扩展过程的研究

通过对岩石损伤扩展机理的研究，运用分形几何理论，建立了岩石损伤变量ω与分形维数之间关系。     

Important Geological Factors Controlling the Formation of Gold Deposits in East China

The major gold deposits in east China are characterized by their occurrence in pre-Cambrian host metamorphic rocks,restriction in some specific stratigraphic-structural terranes,tendentious localization in ductile or ductile-brittle shear zones,association with the syntexis type granitoids,and significant remobilization,superimposition and enrichment by the later stage Mesozoic tectono-magmatic activities.     

贵州三都早奥陶世同高组下燕高页岩段的生物标志化合物

本文着重报道了贵州三都早奥陶世同高组下燕高页岩段生物标志化合物特征，首次在采自该层位的样品中检出丰富的正烷烃、链状类异戊二烯烷烃、萜类化合物及甾类化合物。测试结果显示:正烷烃图谱呈双驼峰形，碳数分布为ｎＣ_１５～ｎＣ_３５，以ｎＣ_１８为主峰碳，ｎＣ_２９为次主峰碳，Ｃ－_２１/Ｃ＋_２２为０.７７～１.０２，ＯＥＰ为０.９４～１.０４；植烷占优势，Ｐｒ/Ｐｈ为０.４０～０.４６；藿烷碳数为Ｃ_２７～Ｃ_３５，以Ｃ_３０占优势，Ｃ_２７＋Ｃ_２９＜Ｃ＋_３１；仅见碳数分布为Ｃ_２０～Ｃ_２９的长链三环二萜烷，以Ｃ_２８为主峰碳；甾烷丰度顺序为Ｃ_２９甾烷＞Ｃ_２７甾烷＞Ｃ_２８甾烷，同时检出了孕甾烷和４－甲基甾烷。生物标志化合物显示出还原环境特点，且可能主要来自藻类。     

Conductivity of NaCl solution at 0.4–5.0 GPa and 25–500 °C

NaCI-H₂O is the most fundamental ternary system in geology. Until now, the measurements of electrical conductivity of NaCl solutions are still little at high pressures (> O.5 GPa) We measured the conductivity of 0.01 m NaCl solution at 0.4–5.0 GPa and 25-500°C. The results are consistent with that of Quist and Marshall (1968) at 0.4 GPa. The conductivity of NaCl solution increases with increasing temperature. The results also show that the conductivity of NaCl solution changes little with increasing pressure below 1.5 GPa and changes rapidly with increasing pressure above 1.5 GPa. The rapid increase of the conductivity of NaCl solution may play an important role in many geological processes (such as the genesis of ore deposits under hydrothermal condition) and other fields. Project supported by the National Natural Science Foundation of China.