三合村—垦西地区油气勘探潜力分析

本文总结了三合村－垦西地区的勘探成果，分析了该区的勘探潜力，特别指出上第三系浅层气和受地层不整合控制的沙河街组稠油是该区今后的主要勘探、开发目标。     

旋转流体物理实验中见到的大气环流特征

在合适的实验参数下(热力Rossby数R_(OT)=0.1,Taylor数T_a=2.2 ×10~7),在旋转斜压流中,大尺度地形强迫造成低频振荡以及大气环流中的“阻塞”流型。这是由于地形强迫造成的准静止波与行进波的相互作用及共振引起的。地形把波数单一的流动变成多波数的流动。地形强迫使波数减少。     

Formation of Strata—bound Ore Deposits in China：Studies on Fluid Inclusions

Fluid inclusion studies were made on the basis of the geological data on the strata-bound ore de-posits of China including those of Pb,Zn,Au,Ag,Sb,U,Hg,W,quartz-crystal and sparry-calcite.An attempt was made to approach the model of formation for each type of ore depos-its by considering the material sources,the migration of fluids and the conditions of mineralization.It is found that ore-forming fluids (especially H2O)originate as heated underground water reacts with the wallrocks and dissolves Na^ ,Ca^2 ,K^ ,Cl^ ,HCl^- and Mg^2 .The ore fluids are mainly of NaCl-Ca-HCO3-H2O system with salinities ranging from 4to 14wt.%.NaCl equivalent and densities ranging from 0.9 to 1.0g/cm^3.It may be concluded that the deposits were formed at temperatures ranging from 150 to 250℃ under pressures from 300 to 1000 bars.Ore deposition may have been controlled by temperature and pressure or by the mixing among different fluids.     

无锡市区浅层地基土工程地质条件及其评价

作者通过对无锡市区浅层地基土的工程地质条件分析,指出了存在的主要工程地质问题。对无锡市区土体的主要持力层,尤其是作为高层建筑的持力层进行了分析评价,对城市建设规划提出了建议。     

柿竹园—野鸡尾钨锡钼铋 多金属矿床流体包裹体初步研究

该矿床石英中流体包裹体的均一温度频率直方图具明显的塔式结构。柿竹园和野鸡尾矿段主要成矿阶段的温度下限分别为230—300℃和220—240℃（经压力校正）。这两个矿段流体包裹体、盐度频率直方图亦非常相似，并均具较低的数值，说明两地段成矿溶液特征相似并且均不成。计算结果表明，矿床成矿流体密度和压力均较低。流体低压力值与矿床就位深度较浅(小于l一2km)的地质证据相一致。成矿流体密度等值线图上的密度高均分布于花岗岩和花岗斑岩或石英斑岩和花岗岩与矽卡岩和大理岩具复杂接触关系的地段。而这种复杂接触地段的矿化强度通常较高。