个旧锡矿大马芦层间氧化矿床地质特征及找矿方向研究

个旧锡矿层间氧化矿床品位高、工业利用价值大，加强这类矿床地质特征的研究，对于矿山深部及外围的锡矿找矿具有重要的指导意义。通过对个旧锡矿层间氧化矿床产出的地质特征、控矿因素的分析与研究，探讨了其矿床成因，并总结出：“背-突式”、“向-断-凹式”、“断-互式”及“断裂式”四种成，矿模式。按这些模式的找矿实践表明，找矿效果极佳。     

黔西北猫猫厂-榨子厂铅锌矿区地质特征及找矿方向

猫猫厂铅锌矿系黔西北铅锌银矿集区主要矿床之一，产于NW向与NE向构造交切复合部位，赋矿地层主要为石炭系白云岩、白云质灰岩。通过对矿床地质特征的总结及与邻区典型矿床类比分析，认为深部找矿潜力大，应加大找矿力度。     

Run-up from impact tsunami

We report on calculations of the on-shore run-up of waves that might be generated by the impact of subkilometre asteroids into the deep ocean. The calculations were done with the COULWAVE code, which models the propagation and shore-interaction of non-linear moderate- to long-wavelength waves  ( kh < π)  using the extended Boussinesq approximation. We carried out run-up calculations for several different situations: (1) laboratory-scale monochromatic wave trains onto simple slopes; (2) 10–100 m monochromatic wave trains onto simple slopes; (3) 10–100 m monochromatic wave trains onto a compound slope representing a typical bathymetric profile of the Pacific coast of North America; (4) time-variable scaled trains generated by the collapse of an impact cavity in deep water onto simple slopes and (5) full-amplitude trains onto the Pacific coast profile. For the last case, we also investigated the effects of bottom friction on the run-up. For all cases, we compare our results with the so-called 'Irribaren scaling': The relative run-up   R / H ₀=ξ= s ( H ₀/ L ₀)^−1/2  , where the run-up is   R , H ₀  is the deep-water waveheight, L ₀ is the deep-water wavelength, s is the slope and ξ is a dimensionless quantity known as the Irribaren number. Our results suggest that Irribaren scaling breaks down for shallow slopes   s ≤ 0.01  when  ξ < 0.1 − 0.2  , below which   R / H ₀  is approximately constant. This regime corresponds to steep waves and very shallow slopes, which are the most relevant for impact tsunami, but also the most difficult to access experimentally.     

Seismic anisotropy beneath Dronning Maud Land, Antarctica, revealed by shear wave splitting

Shear wave splitting analyses have been carried out using teleseismic data from broad-band seismograph stations deployed at temporary and permanent locations in Dronning Maud Land (DML), Antarctica. In most cases, the observed anisotropy can be related to major tectonic events that formed the present-day Antarctic continent. We rule out an anisotropic contribution from recent asthenospheric flow. At the Russian base Novolazarevskaya near the coast in central DML, waveform inversion suggests a two-layer model where the fast direction of the upper layer is oriented parallel to Archean fabrics in the lithosphere, whereas the anisotropy of the lower layer is interpreted to have been created during the Jurassic Gondwana break-up. Recordings at the South African base Sanae IV, however, show enigmatic results. For narrow backazimuthal segments, splitting parameters show strong variations together with a multitude of isotropic measurements, indicative of complex scattering that cannot be explained by simple one- or two-layer anisotropic models. In the interior of the continent, the data are consistent with single-layer anisotropy, but show significant spatial variations in splitting parameters. A set of temporary stations across the Heimefront shear zone in western DML yield splitting directions that we interpret as frozen anisotropy from Proterozoic assembly of the craton. An abrupt change in fast axis direction appears to mark a suture between the Grunehogna craton, a fragment of the Kalahari–Kaapvaal craton in southern Africa and the Mesoproterozoic Maudheim Province.     

瞬态瑞雷面波法在公路工程地质勘察中的应用

结合安徽省高速公路建设工程实例,介绍瞬态瑞雷面波勘探技术在公路工程地质勘察中的应用,解决沿线高边坡、深路堑、桥梁、隧道进出口的岩土分层,给出基岩风化分带等工程地质问题,省时、省力,取得了良好的经济效益和环境效益.     

克克齐矿区铜矿床地质、地球物理特征及找矿远景

克克齐矿区铜矿床分别产于石炭系中统本巴图组二岩段及上统阿木山组二岩段的海相火山碎屑沉积岩中，地表以铁帽的形式存在，岩石见褐铁矿化，探槽中可见有孔雀石。该铜矿床的成因类型是海相火山岩型。地下铜矿体的上方有明显的激电异常反映，激电异常应是本区寻找赋存在海相火山碎屑岩地层中铜矿体的找矿有利标志。文章论述了铜矿床所处的区域地质背号、矿区和矿床（体）地质特征、地球物理特征，初步分析了引起矿致异常的条件和因素，对异常进行了评价，并提出了找矿建议。     

声幅—变密度测井原理及测井解释方法

对利用声幅—变密度测井判断固井质量的测井原理和工作方式及资料的解释处理进行了介绍,并对固井中出现的各种可能曲线反映进行了详尽的分析,阐述了资料解释中不确定因素。     

甘肃天水柴家庄金矿地质特征与找矿标志

柴家庄金矿位于西秦岭造山带北秦岭加里东褶皱带柴家庄-庞家河金矿带上,赋存于柴家庄二长花岗岩外接触带的丹凤群中,严格受NE向及NNW向断裂控制。矿床的形成受丹凤群、印支-燕山期酸性侵入体及断裂构造3种因素控制。岩体外接触带0～2km范围内的NE向、NNW向断裂构造带是找矿的最佳方向。在详细研究矿床地质及地球化学特征的基础上,总结了该矿床的主要控矿因素,并归纳了主要找矿标志,为区内找矿提供了新思路。