太白山土壤特性及氧化铁发生学特征

随海拔的降低,秦岭北坡中山区森林土壤因温度、降水和植被类型的变化存在很大差异:高海拔地区发育的酸性湿润雏形土酸度较高,有机质含量十分丰富;与之相比,低海拔地区发育的简育湿润淋溶土有机质含量下降,但结构复杂,土壤具有粘化层。较高的有机质含量和特殊的有机质组成促进了纯针叶林土壤中硅酸盐矿物的溶解,释放出氧化铁并使之螯迁至土壤B层富集。环境因素决定了土壤酸度、有机质等特性,也影响土壤氧化铁的组成和分布。土壤粘粒含量与土体游离氧化铁含量显著相关,剖面铁的游离度与氧化铁全量无关,只与土壤发育程度有关。太白山北坡中山区土壤处于脱盐基富硅铝化的风化发育阶段     

开平向斜—清凉山背斜地质构造成因分析

运用地质力学原理，揭示了开平向斜－清凉山背斜地质构造的成因。     

拉鸡山裂谷带特征及演化

拉鸡山构造带东西长逾 6 50km ,展布于由元古宇组成的结晶地块内部 ,是一条早古生代火山岩极为发育的构造带。通过作者在拉鸡山多年的野外调查工作和研究 ,认为该地区无论在区域地质学、岩石学、构造变形学还是大地构造演化方面 ,其早古生代构造演化史皆具典型的裂谷带特征。晚古生代以来 ,区内经历了陆内多阶段造山过程。新生代早更新世 ,拉鸡山巨型断裂带发生左旋走滑运动 ,导致断裂带弧形转折部位强烈崛起 ,形成雄伟高山。     

峨眉山玄武岩的岩相与岩体结构

峨眉山玄武岩是西南地区水电工程的主要建基岩体，其岩体结构明显受其建造的控制，不同地区，不同岩相的玄武岩，由于岩石组合及原生结构特征等的差异，而具有不同的岩体结构特征。本文结合拟建金沙江溪洛渡水电工程，雅砻江官地水电工程等实例，从岩相角度分析了玄武岩岩相及原生结构及原生结构对其岩体结构的控制作用。     

新疆伊吾淖毛湖北山金矿床地质特征与成矿模式

论述卓毛湖北山金矿地质特征和控矿因素，并建立三位一体成矿模式，以拓宽找矿思路。     

Impacts of the Kuwait Oil Fires on the Mount Qomolangma Region

Mt. Qomolangma (also known as Mt. Everest), the world’s highest mountain, is situated over the world’s highest plateau, the Tibetan Plateau. Because of its height and because of its distance from industrialized areas, the environmental state of the Mt. Qomolangma region can normally be considered “undisturbed”. It is interesting to investigate how this “undisturbed” state has been changing with time and whether it has been influenced by large environmentally disruptive events such as the Kuwait oil fires of 1990 and 1991 (Small, 1991). In order to do this, riv-er water samples were collected from the Rongpu River at Rongpu Temple Station in the summers of 1992 and 1993, as was done in 1975, and aerosol samples were collected in the summer of 1992 at the same station as was done in 1980. River water samples were analyzed using atomic absorption spectroscopy (AAS) at the Chinese Academy of Sciences. Aerosol samples were analyzed using proton-induced x-ray emission (PIXE) at the University of Fudan in Shanghai. The results show that the concentrations of chemical species in the river water at Rongpu Temple Station were much higher in the summer of 1992 than they were in 1975 and 1993, and the concentrations of atmospheric chemical species were much higher in 1992 than they were in 1980. The environment of the north slope of Mt. Qomolangma was therefore heavily polluted before and/or during the summer of 1992, possibly due to the Kuwait oil fires in 1990 and 1991.     

阿尔泰山晚新生代以来的古风化壳及其形成时代

阿尔泰山古风化壳研究结果表明，晚新生以来，至少存在两个风化期，形成了不同类型的风化壳，本文阐述这两个风化期的特征及相应形成的风化壳的类型及特点。     

山地降水垂直分布三参数高斯模式及其应用

针对蒋忠信山地降水高斯模式计算中的问题,提出三参数高斯模式及其非线性回归计算方法,将其应用于我国部分山地降水中,效果较好。     

华东某些山区第四纪古纬度变化

据１８８个古地磁样品和样品产地的地理坐标、余纬度、平均磁偏角和磁倾角，求得样品产地的古纬度．本区古纬度比现今纬度低：７．６°－８．２°，６．６°－６．８°，６．０°－６．５°，２．３°－３．４°，０．２°－０．６°．变化由印度板块和太平洋洋壳北推合力所致．     

四川龙门山南段东缘泥石流

当地断裂众多，岩体破碎，崩塌滑坡遍布，加之是强震带和川西大暴雨中心区，相对高度３００—３５００ｍ，泥石流形成条件极为充分．泥石流沟汇水面积小，沟床比降陡，主沟长度短．绵竹汉旺后山泥石流综合治理后，可成为一个示例．