广西平果堆积铝土矿岩溶地貌演化与成矿作用

研究了广西平果堆积铝土矿岩溶地貌演化与成矿作用.研究结果表明:广西平果堆积铝土矿风化程度的发展对应于矿区岩溶地貌的演化:地貌分带是矿区岩溶演化的基本规律之一;随着地貌演化过程中岩溶类型的顺序发展,地貌分带形态的变化趋向于不规则;矿区岩溶类型分带对应不同的水系结构,分带地貌演化反映水系发展过程,从水系演化关系指示矿区岩溶在地壳抬升过程中多旋回活动的特征;通过对比那豆与太平一教美矿区,发现堆积矿的分布形态随地貌演化趋向于分散和不均匀,堆积矿成分的变化趋势符合风化过程的一般规律;堆积矿的氧化铝含量经历了从上升到下降的变化过程,与地下岩溶演化程度密切相关;根据岩溶地貌初步恢复了矿区地下小流域水系分布形态,发现岩溶水系发育程度是形成地貌差异和堆积矿变化的基本原因.     

豫西石炭系铝土矿富集成因浅析

豫西石炭系铝土矿主要赋存于寒武系-奥陶系灰岩古风化剥蚀面上的岩溶洼斗、洼地中,矿石的品位和矿体的厚度呈明显的正相关关系。通过几个矿区岩溶洼斗中含矿岩系岩性、化学成分的分析,认为在铝土矿成矿过程中,岩溶洼斗、洼地构成一个自然的铝土矿富集和保存系统。     

川东明月峡背斜区岩溶形态分异与构造裂隙表征参数的关系

探讨高陡背斜区张裂隙发育规律与岩溶地貌的空间分异性之间的相互关系,以张裂隙发育规律预测岩溶空间分异性,也可以通过岩溶空间分异性预测构造张裂隙的空间分布规律。以岩层面主曲率为切入点,通过四川盆地东部明月峡背斜区现场调查、遥感解译、数理统计分析及数学建模等手段,采用岩层面的主曲率对背斜区张裂隙在不同构造部位的发育程度进行预测,分析张裂隙与岩溶地貌空间分异的相关关系。结果表明：岩层面主曲率大小、张裂隙发育概率及岩溶地貌空间分异呈现相似的空间分布规律,岩层面主曲率大的区域,地表岩溶发育较强。川东背斜区岩溶空间分异的主控因素是构造运动产生的张裂隙,岩体张裂隙发育程度决定了早期岩溶地貌的发育特征,现代岩溶地貌空间分异是岩溶正反馈机制促进原始张裂隙差异分化的结果。     

贵州高寨铝土矿床地质特征及成因初探

高寨铝土矿床是黔中-遵义铝土矿带内新发现矿床。矿体主要赋存于下石炭纪九架炉组(C1jj)含铝岩系中上部,呈层状、似层状产出,其厚度变化较小,矿区范围内从南到北矿体连续分布,产状与地层产状基本一致。矿石多呈块状构造,结构特征以沉积作用形成的碎屑结构、鲕粒结构为主。矿石矿物以一水硬铝石为主,脉石矿物多为高岭石、绿泥石等粘土矿物。通过对矿床地质、古地理环境特征等进行详细分析,认为该矿床为风化-沉积型铝土矿。     

平果岩溶堆积铝土矿空间分布特征及成因探讨——以教美矿区为例

以平果堆积铝土矿教美矿区为例,对矿区堆积铝土矿的空间分布特征及成因进行了探析,提出了岩溶堆积铝土矿的堆积序列和分布规律。     

左权县清河店铝土矿矿床地质特征及找矿靶区

研究了山西省左权县清河店矿区铝土矿地质特征、矿床特征、矿物成分、矿石品位、矿石类型、矿床成因及矿体埋藏条件,得出了矿体平面呈多矿体、形态不规则、厚度较稳定,矿石品位较高,类型以碎屑状铝土矿为主,成因属沉积型铝土矿矿床,矿体埋藏较浅等结论,提出了下一步在成矿条件和开采条件较好的Ⅰ～Ⅵ号矿体继续进行铝土矿勘查工作的建议。     

浅谈兴县贺家圪台矿区铝土矿的地质特征

针对兴县贺家圪台矿区铝土矿的地质现状．从矿层厚度、矿石品位、矿床规模、开采技术条件等方面．叙述了贺家圪台矿区铝土矿的矿床地质特征。     

荥阳市翟沟铝土矿矿床地质特征及控矿因素

本文介绍了荥阳市翟沟矿区铝土矿矿床地质特征,矿体出露一般,矿石品位、厚度中等,是滨海湖泊相沉积矿床。晚寒武纪灰岩是本区成矿的主要物质来源。该区矿床受中石炭统本溪组地层、岩相古地理环境和地貌的控制.     

塔里木盆地轮古地区奥陶系古岩溶作用及储层特征

 通过古岩溶作用标志识别和成因分析,综合利用残余地层厚度法、地貌法和印模法等技术手段,对轮古地区奥陶系古岩溶地貌进行恢复,划分3 个岩溶地貌单元和8 类微地貌单元,并细分古岩溶地貌分区,对分区岩溶地貌及储层发育特征进行剖析。研究认为,不同岩溶带普遍发育裂缝和孔洞,但在不同地貌分区内储集类型具有明显的差异性。其中表层岩溶带的岩溶高地和斜坡主d:\PDF\.pdf要发育裂缝孔洞型和裂缝型储层;垂直岩溶带裂缝、孔洞均发育;而径流岩溶带中的孔洞和洞穴较发育。     

兴县黄辉头铝土矿矿床地质特征及找矿意义

从矿层厚度、矿石品位、矿体规模、开采技术条件等方面,叙述了黄辉头矿区铝土矿的矿床地质特征和找矿意义。     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

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-