土的边界面本构模型研究进展

简述了土的边界面本构模型国内外研究状况，阐述了其基本思想。对边界面模型作了简要评述，提出了边界面模型研究的发展趋向。     

中子活化分析在铼—锇法年龄测定中的应用

同位素稀释中子活化分析铼与感耦等离子体质谱法测定锇相结合，应用于辉钼矿及铜＿镍硫化物矿物的铼＿锇年龄测定，取得了满意的结果，扩大了铼＿锇测年法的应用范围。     

山东中新世山旺组生物群的古生态

山东临朐产出的中新世山旺组化石群,保存精美、属种分异度高。50多年来,经发掘和研究,目前已从约30余米的硅藻页岩沉积中报导了真菌、硅藻、介形虫、孢粉、昆虫、鱼类、两栖动物、爬行类、鸟类、哺乳动物及遗迹化石等十几个门类的化石,共计400余属700多种。本文总结了化石与周围无机界的关系、化石的埋藏特征、形成原因以及相关古生态学问题――古气候、古温度、古纬度、古地形、山旺湖的水文性质、湖水的季节性变化与硅藻页岩的纹层、动植物群的营养结构以及山旺盆地的沉积历史。     

新疆乔尕山金矿床成矿流体来源研究

对乔尕山金矿床脆韧性剪切变质成矿作用阶段形成的受不同程度剪切的石英脉中流体包裹体气相成分分析表明,由糜棱岩化石英脉→初糜棱岩石英脉→石英脉糜棱岩,气相成分总量及主要组分Ｈ２Ｏ和ＣＯ２的含量均呈有规律的降低。两个主要成矿阶段形成的石英脉具有相似的Ｈ、Ｏ同位素组成,δ＾１８ＯＨ２Ｏ＝５．２５‰～９．５４‰,δＤＨ２Ｏ＝－７０．９‰,～－４２．０‰,受剪切岩石中矿物中流体包裹体所代表的流体是韧性剪切金矿     

莺—琼盆地1号断裂带含烃热流体活动初探

１号断裂带是莺－琼盆地油气勘探的重点地区之一,有机包裹体研究有助于追踪油气及热流体活动的痕迹,为油气运聚成藏提供地球化学依据,通过包裹体薄片镜下观察,均一温度和盐度测试,认为工区内发育五种类型的有机包裹体：（１）液态烃包裹体;（２）气流态烃包裹体;（３）气态烃包裹体;（４）含烃ＣＯ２包裹体;（５）烃子矿物包裹体,含烃ＣＯ２包裹体一般与气态烃共生,含烃子矿物包裹体既无液态烃共生又与气态烃共生,包裹体     

山东淄博晚石炭世双壳类动物群及其古生态特征

本文记述了采自山东淄博地区晚石炭世太原组双壳类化石１５属２８种，讨论了化石组合特征．在研究双壳类动物群的基础上，划分了３个动物群落，即：Ａｃａｎｔｈｏｐｅｃｔｅｎ群落、Ｐａｌａｃｏｌｉｍａ群落和Ａｉｔａｒｔｅｌｌａ群落，并对各群落的生态特征进行了系统研究．     

论当前我国北西部铀矿勘查关键技术

本文提出当前我国北西部铀矿勘查两项关键技术──中国北西部寻找大型超大型可地浸砂岩铀矿勘查技术和找矿勘探过程中地浸可行性评价技术，并论述了技术内容和技术开发目标。两项关键技术的开发研究和落实对扩大我国铀矿资源有现实意义。     

非等间距序列的灰色预测模型及其在岩石蠕变断裂中的应用

给出了非等间距序列的灰色预测模型，讨论了该模型的灰色预测平面和最优预测函数。最一将该模型应用于符合Ｋｅｌｖｉｎ模型的岩石材料的蠕变断裂研究，给出了应用实例，并验证了该方法的可行性。     

山东省德州市“中华碘泉”矿泉水的发现与开发

在山东省德州市首次探明国内稀有含碘饮用用天然矿泉水－－“中华碘泉”,研究表明,矿泉水是在新生代断陷盆地的构造背景和弱碱氧化的水文地球化学环境条件下,地下水与含水介南长期水－岩反应中经溶滤形成的,矿泉水水量丰富,水质优良,为含碘水苏打型矿泉水,但氟含量偏讥;为合理开发这一富足资源,可选用电渗析,倾析方法降低氟含量,并将其作为规模化含碘矿泉水生产的技术工艺。     

The composition of the Earth

Compositional models of the Earth are critically dependent on three main sources of information: the seismic profile of the Earth and its interpretation, comparisons between primitive meteorites and the solar nebula composition, and chemical and petrological models of peridotite-basalt melting relationships. Whereas a family of compositional models for the Earth are permissible based on these methods, the model that is most consistent with the seismological and geodynamic structure of the Earth comprises an upper and lower mantle of similar composition, an Fe---Ni core having between 5% and 15% of a low-atomic-weight element, and a mantle which, when compared to CI carbonaceous chondrites, is depleted in Mg and Si relative to the refractory lithophile elements.The absolute and relative abundances of the refractory elements in carbonaceous, ordinary, and enstatite chondritic meteorites are compared. The bulk composition of an average CI carbonaceous chondrite is defined from previous compilations and from the refractory element compositions of different groups of chondrites. The absolute uncertainties in their refractory element compositions are evaluated by comparing ratios of these elements. These data are then used to evaluate existing models of the composition of the Silicate Earth.The systematic behavior of major and trace elements during differentiation of the mantle is used to constrain the Silicate Earth composition. Seemingly fertile peridotites have experienced a previous melting event that must be accounted for when developing these models. The approach taken here avoids unnecessary assumptions inherent in several existing models, and results in an internally consistent Silicate Earth composition having chondritic proportions of the refractory lithophile elements at 2.75 times that in CI carbonaceous chondrites. Element ratios in peridotites, komatiites, basalts and various crustal rocks are used to assess the abundances of both non-lithophile and non-refractory elements in the Silicate Earth. These data provide insights into the accretion processes of the Earth, the chemical evolution of the Earth's mantle, the effect of core formation, and indicate negligible exchange between the core and mantle throughout the geologic record (the last 3.5 Ga).The composition of the Earth's core is poorly constrained beyond its major constituents (i.e. an Fe---Ni alloy). Density contrasts between the inner and outer core boundary are used to suggest the presence ( 10 ± 5%) of a light element or a combination of elements (e.g., O, S, Si) in the outer core. The core is the dominant repository of siderophile elements in the Earth. The limits of our understanding of the core's composition (including the light-element component) depend on models of core formation and the class of chondritic meteorites we have chosen when constructing models of the bulk Earth's composition.The Earth has a bulk Fe/Al of 20 ± 2, established by assuming that the Earth's budget of Al is stored entirely within the Silicate Earth and Fe is partitioned between the Silicate Earth ( 14%) and the core ( 86%). Chondritic meteorites display a range of Fe/Al ratios, with many having a value close to 20. A comparison of the bulk composition of the Earth and chondritic meteorites reveals both similarities and differences, with the Earth being more strongly depleted in the more volatile elements. There is no group of meteorites that has a bulk composition matching that of the Earth's.