云南滇东北灯影组铅锌矿床地质特征及成矿规律研究

震旦系灯影组为滇东北富铅锌矿的重要产出层位之一.通过野外观察和室内研究总结了震旦系灯影组铅锌矿床的地质特征及成矿规律.认为该类型铅锌矿床中的工业矿体主要赋存在灯影组上段上下亚段两个含矿层,目前发现两类矿体:层状矿体、脉状矿体.层状矿体具有一定的赋存部位和赋矿岩性特征,脉状矿可切穿灯影组全部岩性段常形成"上层矿-下层矿-脉状矿"三位一体的成矿模式.灯影组中的铅锌矿床应为今后滇东北矿集区中找矿潜力巨大的矿床类型.     

新疆西昆仑地区塔卡提铅锌矿地质特征与成矿远景

对塔卡提铅锌矿形成的地质背景、矿区地质特征、成矿机制和成矿远景进行了初步分析.结果表明:塔卡提铅锌矿床位于西昆仑塔木-卡兰古铅锌铜成矿构造带的远景区,区域上受西昆仑构造带和康西瓦构造带共同控制.矿体产出部位严格受白云岩-砂岩接触层位及构造破碎带控制,矿体呈层状或脉状;围岩主要为蚀变白云岩、碎屑砂岩;主要矿石矿物为方铅矿和闪锌矿;矿床类型与密西西比河谷型矿床类似.由于矿床处于西昆仑塔木-卡兰古铅锌铜成矿构造带的远景区,铅锌矿床潜在资源量较大,同时区域上相同类型铅锌矿床较多,具有较好的成矿远景.     

昭通铅锌矿床闪锌矿微量元素地球化学特征

昭通铅锌矿床是滇东北富锗铅锌矿集区的一个大型矿床。前人对该矿床的研究集中于成矿构造背景、成矿物质和成矿流体特征、构造控矿特征、矿床成因以及成矿预测等方面,并取得了显著的研究成果。然而,在矿床成因方面仍存在较大争议。闪锌矿是铅锌矿床的主要矿石矿物之一,运用闪锌矿微量元素地球化学特征研究,可以作为判别矿床成因的一种标志。在总结矿床地质特征的基础上,开展闪锌矿矿相学及微量元素地球化学的研究。     

广西龙湾铅锌矿床矿石矿物组构特征及成矿阶段划分

通过井下的详细勘查和显微镜下鉴定,对广西龙湾铅锌矿床的矿石组构特征进行了系统研究.矿区矿石构造主要为块状构造、浸染状构造、网脉状构造和斑杂状构造;结构主要为结晶作用和交代作用形成的结构,其次为固溶体分离作用、结晶物质重结晶作用和压力作用形成的结构.同时将成矿期次分为沉积成岩期、中低温热液成矿期和表生氧化期,其中热液成矿期是矿床的主要成矿期.根据矿物组合特征,将成矿划分为五个成矿阶段,分别是黄铁矿-石英-方解石阶段、闪锌矿-方铅矿-黄铁矿阶段、黄铁矿-闪锌矿-方铅矿-黄铜矿阶段、石英-方解石阶段、氧化物阶段.矿物的生成顺序为黄铁矿1-闪锌矿(黄铜矿1)-方铅矿-黄铁矿2-黄铜矿2.最终确定龙湾矿床为受构造活动控制的中低温热液充填交代-叠生改造型多金属矿床.     

汉源县铜厂河铅锌矿地质特征及控矿因素分析

汉源县铜厂河铅锌矿,以矿体呈脉状、似层状产出和矿体小、硫铁—铅锌共生为特征。铅锌矿床主要赋存于震旦系上统灯影组第三岩性段(Z2d3)中,矿体的产出部位集中于正断层及层间破碎带内,主要受地层、岩性、构造等因素控制。通过对铜厂河铅锌矿地质特征和控矿因素的分析,并与邻近矿区对比,认为该矿床为层控型沉积—改造矿床。     

纳米比亚北部桑格里铅矿田矿床地质特征及找矿潜力分析

纳米比亚北部桑格里(Ts)铅矿田,含OM和TE两个主要矿床,属喷气沉积型(SEDEX)铅锌矿床,位于桑格里向斜的两翼。通过工作确定为大型规模、具有找矿潜力与开发效益的矿床。矿床以铅为主,伴生锌、铜、银;铅品位1%～12%,平均品位达3.4%以上圈定为富铅矿体。通过地质勘查与物探(磁、电法)工作,总结分析了桑格里向斜两翼的OM和TE两个主要矿床的地质特征;阐述了两个矿床各自赋存的成矿空间及成生联系。通过控矿因素及成矿条件分析,初步认为矿床成因属海底喷气(发)沉积的层(块)状硫化物矿床,与含铁建造关系密切。通过总结、分析矿床找矿标志、控矿因素、成矿条件和成矿规律,指出向斜为找矿有利地段及找矿靶区,具有很大找矿潜力。     

黔西北亮岩铅锌矿床地质特征及找矿方向

黔西北赫章亮岩Pb-Zn矿床位于川滇黔Pb-Zn成矿带,勘查表明该矿床具有中型以上找矿潜力.本文对亮岩铅锌矿床的地质特征、围岩蚀变特征进行了深入分析.矿区坑道编录及室内研究表明:1石炭统黄龙组(C2h)为矿区赋矿层位,矿体赋存于白云岩与白云质灰岩接触界线的角砾岩化带,具有明显的MVT型矿床特点;2从矿体中心向外,蚀变由方解石化过渡为白云石化;3北北西向断层与地层复合控矿特征明显.上述认识可为本区矿床成因机制研究及勘查找矿工作提供理论依据,为黔西北铅锌成矿区成矿体系研究提供补充.     

云南省建水县石头寨铅锌矿床成矿条件分析

该铅锌矿床位于扬子准地台滇东台褶带昆明台褶束南缘,区域构造以北东向及东西向断裂和褶皱构造为主,矿区构造线方向与区域构造线特征大体相近,呈近东西向或北东东向。矿区内主要为一单斜构造,地层倾向南南东。矿床产于上泥盆统在结山组(D3zj)的断层破碎带中,该地层倾向南南东,倾角20-30°,岩性单一,主要由浅灰、灰白色薄层状含泥质条带粉-细晶白云岩与中-厚层状、块状粉-细晶白云岩组成。矿体呈脉状产出,走向近北东东。矿石矿物主要为闪锌矿,其次为少量方铅矿,未见其他金属矿物,脉石矿物只有方解石。该矿床是受北东东向的断裂构造和泥盆系下统在结山组(D3zj)白云岩系控制的,含矿热液沿断裂构造运移,在碳酸质围岩性质活泼的构造破碎带中发生交代、蚀变、充填作用,于有利的成矿空间内沉淀富集并成矿,属中低温热液型矿床。     

云南省昭通地区大中型铅锌矿床地质特征及成因对比分析

云南省昭通地区是滇东北铅锌银矿集区的重要组成部分.通过昭通地区茂租大型、金沙厂中型铅锌矿床铅同位素特征对比分析,进一步了解昭通地区铅锌矿床的成因,为该区找矿提供理论基础.研究表明,2个矿床既有沉积成因的特征,也有后期热液改造的特征.成矿金属主要来自上部地壳岩石,少量来自下地壳或上地幔,二者均属于沉积改造矿床铅锌矿化即受热水沉积控制,又受后期改造作用影响.该区的找矿工作既要重视寻找层状、似层状矿体,也要加强寻找大脉状矿体的力度.     

新疆阿勒泰市塔拉特铁铅锌矿床地质特征及找矿方向

塔拉特铁铅锌矿床产于下泥盆统康布铁堡组下亚组第二岩性段上部,容矿岩石为中酸性变质火山碎屑岩,矿体沿走向、倾向延伸稳定,浅部矿体较薄,深部有变富、变厚趋势。主产元素铅、锌,伴生铁、银、铜等。矿体受火山喷发机构和地层层位控制,有火山喷流—沉积成矿特征,属海相火山岩型铁铅锌矿床。根据对该矿床地质特征及成矿规律的分析,认为该矿床下一步找矿方向主要为A4矿段及A3矿段的深部。本文提出的找矿认识,对指导该矿床下一步勘查工作具有重要的意义。     

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.     

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.     

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.     

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.     

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.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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.     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.