油气通过泥岩盖层渗滤散失机制分析

从受力平衡角度出发,分析了油气通过泥岩盖层渗滤散失的机理,根据泥岩盖层较高的排替奢力和在特定条件下具有异常孔隙流体压力,论证了油气不能通过泥岩支的孔隙发生渗滤散失,油气只能通过泥岩盖层的薄弱处－断层或裂缝而发生渗滤散失,其机制主要是由于断裂或裂缝的形成,使泥岩盖层在此处于隙喉道半径增大,排潜压力降低,异常孔隙流体压力释放,封闭能力降低,油气能量大于泥岩盖层的封闭能力,从而使油气通过断裂或裂缝渗滤散失,油气通过泥岩盖层断裂或裂缝的渗滤散失作用均具周期性。     

MT法中利用阻抗相位资料对畸变视电阻率曲线的校正

从理论上论证了在一定条件下大地电磁响应中的相位资料将不受随机电磁噪声的影响，介绍了由相位资料递推计算视电阻率的方法，通过与远参考资料的比较，证明利用阻抗相位资料可分段恢复校正畸变的实测视电阻率数据。     

湘西震旦系留茶坡组炭质宏化石初步研究

初步研究表明,留茶坡组中部黑色页岩中化石呈炭质压膜状保存,主要包括长绳状或带状宏观藻：Chenlidenella spiralis gen.et sp.nov.,Longifuniculum dissutum Steiner,Erdtmann and Chen,1992,Longitaenina triphyllus gen.et sp.nov.,L.rhodina gen,et sp.nov.,L.lanceolatus gen.et sp.nov.;直立不分枝的管状 宏观藻Longfengshania elongata Duan et Du,1985,L.elliptic-ulum sp.nov,Paralongfengshania oblong sp.nov.Miaohenella hunanensis(Steiner,Erdtmann and Chen,1992),M.rhomba Ding,1996,M.taenina sp.nov.,Cystoculum catenuatus gen.et sp.nov.;末端存在二歧式分的丝状宏观藻：Sectoralga bibarb atus sp.nov.,S,typica Hu,1996,S.capillaceus sp.nov.,S.umbellulata Hu,1996和水母状化石Taoyuania ovatoides gen.et sp.nov.,Liaonanella giganta sp.nov.,Wulingshania canopse gen.et sp.nov.及蠕虫状化石Wenshanwania simplex gen.et sp.nov.等。从地层对比上看,上述化石可能与伊迪卡拉动物群为同一时期的产物。晚震旦世晚期留茶坡组中类水母化石的出现是我国晚震旦世生物演化史上一次重要事件,以类水母等软躯体动物和高分异度的宏观藻类共同繁盛为特色的生物群与国内外同期地层中的已知生物群面貌不同,显示出一种新的伊迪卡拉庭园,为此,本文将棋其合名为武陵山生物群。     

The Material Sourece of a New Type of Copper Deposits—Evidence from Stable Isotopes

The new type of copper deposits concerned with in this paper are vein copper deposits found in the Lanping-Simao Rift Basin, Yunnan,China. As is indicated by H,O,C,S,Pb and Sr isotopes, water and mineralizers in the ore-forming fluids were derived from heated meteoric water and mantle, respectively.The metallic elements(Cu,Ag,Pb,Zn,As,Sb,Fe,REE,etc.)are characterized by a mixed source from the crust and the mantle.     

DT—1016型阴离子交换树脂分离富集金铂钯

研究了DT－1016型阴离子交换树脂对超痕量Au,Pt,Pd的吸附性能及条件。在0.025mol/L HCl介质中，流出速度为0.5-1.0mL/min时，Au,Pt和Pd的富集效果最佳，吸附率分别为99.72％，99.06％和97.95％，共存离子无显著性影响。用等离子体质谱测定标准物质中Au，Pt和Pd，其结果与标准值基本相符。检出限Au为0.27μg/L，Pt为0.40μg/L，Pd为0.19μg／L。对GBW 07294铂族元素国家标准物质进行精密度试验，RSD（n=8）Au为19．2％，Pt为28.1％，Pd为15.6％。     

γ射线透射法测煤灰分的影响因素及校正方法研究

介绍了低能γ射线透射法测量煤灰分分析系统，并且说尽论述了分析系统在测量过程中对测量结果产生主要影响的粒度、温度、成分、水分等因素，针对各种影响因素产生机理，通过大量的粒度、温度、成分、水分等实验，给出动态追峰法，自动补偿法等实用校正方法。     

内蒙古临河—集宁断裂带中段构造特征及其演化

内蒙古临河－集宁断裂带是华北地台北缘的一条重要断裂带，对其中段沙湾子－大老虎店段进行了重点解剖。依据区域地质资料和地球物理场特征，结合构造形迹特征，对该断裂带的构造演化进行研究并探讨了其大地构造意义。该断裂带在航磁、重力及深震剖面上都有明显的反映。对断裂带上韧性剪切带、碎裂岩带、推覆构造、断层、褶皱等构造形迹的研究表明，该断裂带是一条自新太古代至今长期活动的构造活动带，控制着该区地质构造的形成与演化。     

红外光度法测定水质石油类

采用红外光度法测定水质石油类，探讨了萃取溶剂纯度、标准油品种类等对测定结果的影响，并对分光光度法及非分散红外光度法进行了比较。     

Sr,Nd,Pb Isotope Geochemistry and Magma Evolution of the Potassic Volcanic Rocks,Wudalianchi,Northeast China

Wudalianchi volcanic rocks are the most typical Cenozoic potassic volcanic rocks in easten China.Compositional comparisons between whole rocks and glasses of various occurrences indicate that the magma tends to become rich in silica and alkalis as a result of crystal differentiation in the course of evolu-tion.They are unique in isotopic composition with more radiogenic Sr but less radiogenic Pb.^87Sr/^86Sr is higher and ^143Nd/^144Nd is lower than the undifferentiated global values.In comparison to continental pot-ash volcanic rocks,Pb isotopes are apparently lower.These various threads of evidence indicate that the rocks were derived from a primary enriched mantle which had not been subjected to reworking and shows no sign of incorporation of crustal material.The correlation between Pb and Sr suggests the regional heterogeneity in the upper mantle in terms of chemical composition.