浦城地区火山岩型铀成矿远景预测

本文根据浦城地区的成矿地质条件,利用信息量法、逻辑矢量长度法和逻辑矢量长度加权法,在已有成矿地质模型的基础上,筛选出有利的地质变量。根据地质变量对成矿的贡献大小,建立评价模型,圈出有利成矿区。经地质评价,认为各有利成矿区成矿条件有利,有较大的找矿前景。     

川西北地区微细粒浸染型金矿成矿的区域地质、地球物理、地球化学特征

总结了川西北金三角地区的区域地质和矿床地质特征，研究了区域重力场和金矿发育的关系，详细论述了本区金矿发育的区域地球化学背景、区化异常特征及东北寨金矿的地球化学特征。从地球化学方面进行了成矿预测，指明本区尚有较好的找矿前景，应进一步加强工作。     

成矿模式研究的几个问题

成矿模式是当代矿床学研究的重要内容和发展方向，是矿床地质科学在描述性基础上发展到高度理论性的必然产物。成矿模式是在区域成矿学研究和典型矿床研究的基础上建立的，它不仅有助于人们深化对矿床特征和矿床成因的认识，而且对矿产预测和勘查工作具有日益重要的指导作用。作者根据成矿模式的概念和研究成果，提出了新的矿床分类设想，并就成矿模式与成矿系列的关系等问题进行了有益的探讨。     

西藏班公湖-怒江板块结合带岩金遥感找矿模式

西藏班公湖-怒江板块结合带地质构造复杂,成矿条件优越,具备形成金矿的地质背景条件,是西藏最具潜力和规模巨大的贵金属成矿带.但由于该区地质工作程度较低和对成矿规律认识不清,至今没有一个可供开发的岩金矿产地.通过班公湖-怒江板块结合带砂金、岩金矿(化)点,地球化学异常和重砂异常的分布并进行控矿因子分析,建立了该带两种岩金遥感找矿模式,通过验证发现该区具有大型远景规模的岩金矿产地,并认为蚀变岩型金矿和穆龙套型金矿是该带最重要的两种矿床类型,具有巨大的找矿潜力.     

西伯利亚水库和叶尼塞河中物质及生态系统条件的预测：生物物理方法

An avenue to integrate theoretical, experimental and field research methods to forecast water quality in water bodies for different scenarios of water management is proposed. Exploration of the laws of organization, stability and controllability of laboratory "ideal" water microbial communities (model ecosystems) is the basis to build the following biophysical research chain:to formalize with primary field information a conceptual block-diagram of a water ecosystem →to real chemical and other density-dependent and population-growth-controlling factors → to find our limiting factors for natural ecosystems → to conduct experiments with isolated chemical factors and hydrobionts to derive kinetic dependencies and quantitative parameters→ to transfer regularities of operation and kinetic dependencies to the natural ecosystem→ retrospective verification of the model on the base of available field and derived theoretical-experimental data →prognostic calculations for the scenario. Efficiency of the approach is demonstrated in microalgal "blooming" models for Krasnoyarsk and Kantat reservoirs and in prognostication of radioecological state of great Yenisei river:1) radionuclide distribution in the Yenisei''s bottom sediment is nonuniform-"spotty"; 2) it is theoretically shown, that due to biological interactions and tro-phical radioniclide migration there is "spotive" type of space radionuclide distribution. The research is to make use of the novel methods of ecological biophysics:Monitoring:spectral analysis of surface waters (algal pigments), fluorescent techniques to evaluate productivity and condition of algae; rapid bioassays for water toxicity (bioluminescence, chemotaxis techniques). Kinetic experiments:microcosms on evaluating self-purification rates; special cultivators to evaluate the rates of growth of hydrobionts and radioactive engulfing, nutrition spectra; methods of finding growth limiting factors. Models:application of Bellman Principle to optimizing the river water use; theory and peculiarities of microbiological decomposition of pollutants in the river ecosystem. The composition of Prognostication Simulation Model is the next:1) hydrodynamical unit to calculate 2-dimensional space-time rate of stream on any depth; 2) hydrophysical unit to calculate:water temperature and level of solar radiation inside the water body; 3) ecosystem unit to calculate dynamic of concentration of phytoplankton, zooplankton, bacteria, major chemical matters and pollutants in water, content pollutants inside of hydrobionfs cells and dynamic of bentos; 4) radioe-cological unit to forecast the dynamic of radionuclides in the water body and bottom, their hydro-bont''s concentration; 5) database. Reservoirs and river models are provided by monitoring and kinetic experiments data.     

甘肃省铀矿主要类型及找矿远景的初步分析

根据我省铀矿类型和矿化特征,在研究区域地质特征、控矿因素的基础上总结了铀矿分布规律,并把我省铀矿划分为4条成矿带、8条成矿亚带,分析了铀矿成矿特点和今后找铀远景区,为我省二次找铀提供依据。     

Bio-organic Geochemical Characteristics of Gold Deposits in Northwestern Guangxi and Their Metallogenetic Significance

The gold deposits of Triassic period in the northwestern Guangxi are all located in the marine, fine-grained ,fragmental rock series containing organic matter , i.e. the distribution districts of black rock series . The fine-grained gold deposits occur in organic matter-bearing C, D, E, or D, E divisions of the classical Bouma sequences. The evolution degree of organic matters through oil window stage reached the over-mature degree. Both the bio-sources of the organic matters and the distribution of gold in the organic matters disclose the close association between gold, living beings and organic matters. The thermal evolution of organic matters led to the gold to be activized , migrated and enriched , and finally formed gold deposits in the fault belt and crushed zone of black rock series.     

多宝山矿田的地面波谱研究及其在铜矿预测中的应用

根据矿田内岩矿地质波谱与ＴＭ图象亮度的线性相关关系，论述了多宝山铜矿田内矿床的地面波谱特征，地空相关模型及ＴＭ数据的地空相关分析方法，在此基础上讨论了其在铜矿预测中的应用效果。     

北山成矿构造背景概论

北山地区可划分为星星峡-明水-旱山微板块和敦煌微板块,二者以红柳河-牛圈子-洗肠井缝合带为界。古陆裂解初期的寒武纪浅海具有形成磷钒铀锰沉积矿产的有利背景;奥陶纪洋盆和弧后盆地具备形成海相火山-沉积岩系有关铜锌矿的有利背景,被动陆缘裂谷具备形成海相沉积岩系有关铅锌银矿的有利背景;志留—泥盆纪岛弧火山建造具备形成斑岩铜矿的有利背景;石炭—二叠纪陆内裂谷具备形成火山沉积铁矿、斑岩铜矿、基性-超基性岩有关铜镍矿的有利背景;各单元古陆壳活化重熔型花岗岩具形成钨锡稀有金属矿的有利背景。     

基于MORPAS的证据权重法在百顺地区铀成矿预测中的应用

以比例尺均为1∶50000的地质矿产图,土壤地球化学图,航放U含量、U/K等值线图建立空间数据库;经空间统计分析,应用MORPAS系统的证据权重法筛选证据层,以印支期岩体、200 m半径构造线缓冲区、岩浆岩组合熵等21个证据层作为预测变量;以广东省百顺地区为研究区,根据证据权重法所求得的后验概率圈出多个找矿远景区。