黔西南冰洲石矿床地球化学研究

查明黔西南贞丰等地冰洲石矿床的成矿温度为１２６～１６０℃,成矿压力为（２６０～５２０）×１０５Ｐａ;成矿流体盐度（ＳＮａＣｌ）为１２．２％～１９．６％。研究了不同成矿阶段方解石、冰洲石的氢、氧、碳同位素组成及变化特征：其中冰洲石成矿阶段δ１８Ｏ值为１６．２４～１８．４８‰,平均１７．３６‰;Ｗ／Ｒ为０．１６～０．１８。而从薄层方解石阶段到冰洲石成矿阶段δＤＨ２Ｏ＝－４９～－６８‰。δ１３Ｃ（ＰＤＢ）＝－０．６０～０．７３‰,δ１３ＣＣＯ２（ＰＤＢ）为－０．３７～２．４３‰。计算出δ１３Ｃ∑Ｃ＝－２．０８～－２．４９‰。研究表明成矿流体来源于大气降水与加热的地下水的混合,碳来源于地层。探讨了冰洲石成矿时特定的物理化学条件及地质环境。     

新疆乔尕山金矿床稀土元素地球化学特征及其意义

乔尕山金矿床为产于中天山脆韧性剪切带中的石英脉型或破碎带蚀变岩型金矿床,南部矿床产于受剪切的志留泥盆系地层中,北部矿床产于受剪切的闪长岩体中。不同阶段形成的含金石英脉及其赋矿围岩具有相似的稀土元素地球化学特征,呈轻稀土富集型,出现不明显的Ｅｕ负异常及明显的Ｔｂ和Ｅｒ正异常。成矿流体Ｈ、Ｏ同位素变化范围小,δ１８ＯＨ２Ｏ＝４４．５‰～１０．９５‰,δＤＨ２Ｏ＝－６３．０‰～－４２．０‰,其成矿物质具     

黑龙江省逊克县高松山金矿床流体包裹体

高松山金矿床属典型的低硫-浅成低温热液型金矿床,流体包裹体类型以气液两相盐水包裹体为主。根据脉体穿插关系,将其分为3个成矿阶段：阶段Ⅰ宽脉状乳白色石英、角砾状石英;阶段Ⅱ烟灰色脉状石英;阶段Ⅲ乳白色脉状晶洞状石英-碳酸盐-萤石。均一温度为154．5～306℃,平均为229．4℃,主要集中在200～260℃之间。盐度变化于0．18wt％～4．65wt％NaCl,主要集中在0．5wt％～2．0wt％NaCl,平均1．5wt％NaCl。流体密度0．70～0．93g／cm^3,压力22．4～34．1MPa,成矿深度0．75～1．14km;氢氧同位素变化范围小,δ^18Ov—smow=2．7‰～4．1‰,δDv,smow=-117‰～-129‰,成矿流体为大气降水与岩浆水的混合物,且以大气降水为主。     

白银厂矿田同位素特征及其流体成矿作用研究

白银厂矿田多金属硫化物矿床的石英包裹体水的δD水为-71‰～95‰，δ^18O水为-0．09‰～ 8．7‰，显示了岩浆水、大气降水、变质水的混合作用．含矿火山岩总硫δ^34S∑s( 3．68‰)指示硫主要为深部岩浆来源，并经历了陆壳硫的混染，矿石硫主要来源于围岩．含矿流纹岩中的铅为地幔和地壳的混合铅，矿石铅主要来自嗣岩的构造活化铅．这些同位素特征研究表明，白银厂矿田经历了两期成矿作用．早期为岩浆流体与大气降水混合成矿；晚期为构造流体与大气降水混合．对流循环成矿．     

辽宁二道沟矿床成矿物理化学条件探讨

通过对流体包裹体的研究，证实了二道沟金矿床的成矿流体盐度为０．８～１０．０ｗｔ％ＮａＣｌ；成矿温度和压力分别为２３０～２９０℃和１×１０７～２×１０７Ｐａ；成矿热液为弱酸性到弱碱性，且具有从早到晚向酸性程度降低方向演化的趋势；ｆＯ２＝３．９９９×１０－４０～１．２０２×１０－２９，ｆＳ２＝１．７４４×１０－１１～３．２５×１０－９；矿化发生在近地表的开放性裂隙系统内，为典型的浅成低温热液矿床     

二道沟矿床绢云母的39Ar/40Ar年龄及其地质意义

通过对绢云母３９Ａｒ－４０Ａｒ坪年龄的研究,得到二道沟金矿床的成矿年龄为１４０±２．８Ｍａ;从年代方面证实了金矿化与对面沟花岗闪长岩无直接关系,而与火山岩和次火山岩有密切的关系;该矿床是一岩浆热液为主要来源而混入有一部分大气降水的浅成低温热液型金矿床     

扬子板块东南缘微细粒浸染型金矿床成矿热液演化体系初探

扬子板块东南缘微细粒浸染型金矿床为低温热液矿床，成矿热液演化体系比较复杂．本文依据热液地球化学和矿床地质研究．首次将该类矿床的成矿热液划分为四个成矿热液演化体系：（１）大气降水成矿热液演化体系，溶液以大气降水为主，形成热泉型金矿；（２）石油卤水成矿热液演化体系，溶液来源于地层，以有机质参与成矿为特征，形成石油卤水热液型金矿；（３）盆地卤水（建造水）成矿热液演化体系，形成盆地卤水型金矿；（４）岩浆水－建造水成矿热液演化体系，成矿热液主要由岩浆水和地层中建造水构成，形成岩浆水－建造水热液型金矿．不同演化体系热液的Ｃ、Ｏ、Ｈ、Ｓ同位素和矿液成分均有明显的差异．     

应用环境同位素方法研究塔里木河下游浅层地下水

对比浅层地下水与河水及降水的环境同位素数据表明，塔里木河下游浅层地下水直接起源于河水，其初始同位素组成为δＤ＝－７０．５‰，δ１８Ｏ＝－１０．５‰。稳定同位素研究证明，地下水中的高盐份主要是再度强烈蒸发的结果。利用环境氚，根据指数模型初步计算了地下水年龄和年平均补给量。     

苏鲁地体榴辉岩形成过程中流体活动的氧同位素制约

对苏鲁地体西部东海地区榴辉岩及其共生片麻岩内部石英脉进行了氧同位素研究。石英脉及其寄主岩石榴辉岩和片麻岩中的石英与其他矿物之间达到了的氧同位素平衡，计算得到的平衡温度分别为：石英脉６６０－８４０℃，榴辉岩５９５－７２５℃，片麻岩５０５－６６５℃，石英脉的δ＾１８Ｏ值变化范围为－５．３－７．５‰，与寄主岩石的δ＾１８Ｏ相似，指示变质流体与寄主岩石保持氧同位素平衡，同时表明超高压变质作用期间或之后只存     

月山地区铜矿床氢、氧同位素地球化学研究

成矿热液的氢、氧同位素组成既取决于组成热液的不同成因介质水的初始氢、氧同位素组成．又受介质水演化过程中氢、氧向位素组成变化的影响。本文通过月山地区铜矿床成矿热液氢、氧同位素组成五种演化机理的讨论．构筑了成矿热液的δ１８Ｏ－δＤ综合模式图．并确定了铜矿床成矿热液的来源。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that