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1.
对云南因民铁铜矿区深部辉长岩类中金红石、黑云母、碳酸盐和绿泥石的矿物地球化学特征进行研究,以探讨赋存于辉长岩类中的铁氧化物铜金型矿(化)体的成岩成矿环境。金红石由岩浆结晶和多期蚀变作用形成,其结晶温度为820~1 082 ℃,多期蚀变温度为444~730 ℃,金红石与黑云母密切共生;黑云母可划分为原生高钛镁质黑云母、热液蚀变镁质黑云母和铁质黑云母,形成温度分别为653~750 ℃、525~619 ℃和551~577 ℃,氧逸度均位于Ni NiO缓冲剂附近,表明黑云母形成于高温强氧化环境,有利于金红石化;铁白云石-菱铁矿化揭示了强还原环境,交代蚀变金红石;绿泥石多由铁镁矿物蚀变形成,形成于中低温(174~243 ℃)、低氧逸度(-4468~-5142)和高硫逸度(-1442~-1976)的强还原环境,有利于金属硫化物形成。本区岩浆结晶演化和黑云母-金红石化蚀变具有高温强氧化地球化学岩相学特征,有利于钛、铁矿化,后期叠加中低温强还原地球化学岩相,为IOCG矿床成矿的有利地球化学岩相学类型。  相似文献   

2.
杜玉龙  方维萱  鲁佳 《中国地质》2020,47(2):315-333
在沉积型铜矿床中,蚀变火山岩具有特殊的成岩成矿意义。采用构造岩相学填图、火山岩岩相类型划分和电子探针分析等综合方法,对玻利维亚Tupiza铜矿进行研究,结果表明在玻利维亚Tupiza铜矿区内,发育中深成相、次火山侵入相(次火山颈相)、火山溢流相、火山碎屑流相、沉火山岩相等。岩石组合类型为辉绿岩-辉绿玢岩、辉长岩-辉长玢岩、碱性玄武岩、钾质粗面玄武岩、橄榄玄武粗面安山岩和安粗岩。在区域上,碱性玄武质岩浆侵位具多期多阶段性,在Tupiza铜矿区内,采用矿物温度-压力计估算,镁普通角闪石形成温度630.97～748.43℃,压力55～251 MPa,推测成岩深度为2.04～9.27 km,揭示经历多阶段减压增温(减压熔融)、减压降温的成岩演化过程,在岩浆减压侵位过程中具有高温高氧化成岩环境。绿泥石形成温度为112～305℃,lgf(O2)为-45.03～-56.68,lgf(S2)为-4.46～-18.07,属中—低温还原成岩成矿环境,代表铜(银)主成矿期。次火山热液蚀变成岩成矿作用形成了Tupiza铜(银)矿床,蚀变火山岩是铜矿床的成矿物质供给系统,铜(银)矿体富集于蚀变火山岩相体与构造叠加部位,在NNE与NW向构造交汇部位尤为富集。在上白垩统阿诺依菲雅组第三岩性段蚀变火山岩层之下的第二岩性段顶部黄铁矿化砂砾岩中,验证钻孔揭露了铜(钴)矿化体,是深部寻找隐伏沉积岩型铜(钴)矿体找矿标志。在蚀变火山岩和外围砂砾岩中具有明显的铜铅锌矿化和异常。本文认为,在Tupiza铜矿床内,次火山热液成矿系统中心分布在蚀变次火山颈相中,富集铜(银)矿体;周边脉状-网脉状断裂-裂隙-蚀变带为铜铅锌成矿系统的过渡相带;而以赋存在上白垩统Aroifilla组第二岩性段中砂砾岩型铜(钴)矿体和Cu-Pb-Zn异常,为铜(钴)铅锌成矿系统的外缘相带。在深部围绕蚀变次火山岩相体具有寻找铜(银)、铜(钴)和铜铅锌矿体的潜力。  相似文献   

3.
土屋斑岩铜矿床位于新疆东天山晚古生代大南湖-头苏泉岛弧中.矿区出露地层为石炭系企鹅山群火山-沉积岩.文章提出矿区出露的火山-沉积岩以及浅成侵入岩为一火山-侵入杂岩体,发育2个旋回4个岩相:第一旋回包括溢流相玄武岩和安山岩、爆发相集块角砾熔岩和爆发-沉积相凝灰岩;第二旋回包括次火山相闪长玢岩和玄武玢岩.斜长花岗斑岩侵入到火山机构断裂系中.矿体赋存于斜长花岗斑岩和闪长玢岩中.斜长花岗斑岩为成矿斑岩,次火山岩相闪长玢岩为容矿岩石,火山岩为围岩.土屋斑岩铜矿床可分为前成矿期和主成矿期.前成矿期形成于火山活动的晚期,发育青磐岩化;主成矿期形成于斜长花岗斑岩侵位时期,发育钾硅酸盐蚀变、绿泥石-绢云母蚀变和黄铁绢英岩化蚀变及与之有关的矿化,形成了土屋斑岩型矿化的主体.矿化阶段包括钾硅酸盐阶段、绿泥石-绢云母阶段和黄铁绢英岩化阶段等.  相似文献   

4.
绿泥石化是龙首山铀矿床重要的蚀变类型之一。通过对龙首山碱交代型铀矿床的绿泥石等蚀变矿物进行的岩相学和电子探针成分分析研究,确定了龙首山地区绿泥石的化学类型主要为铁镁绿泥石,少数为蠕绿泥石。依据绿泥石成因或与共生矿物的关系,绿泥石可被划分为黑云母蚀变型、长石蚀变型、沥青铀矿共生型和副矿物共生型等4种类型。泥质岩是本区绿泥石的主要原岩类型,是多期次地质作用形成的产物。研究认为,龙首山地区碱交代型铀矿床的成矿过程可表述为矿前期在相对较高温度的热液流体作用下,黑云母发生绿泥石化蚀变,随后热液继续交代长石,形成长石蚀变型绿泥石,进而在成矿期热液温度相对较低的条件下形成与沥青铀矿紧密共生的绿泥石。绿泥石在铀成矿过程中不但活化了花岗岩里的铀,而且还给铀矿化供应了相对良好的积淀环境。  相似文献   

5.
罗文铁矿位于柬埔寨北部柏威夏省罗文县境内,区域上位于罗文真基底穹窿中部,是柬埔寨铁矿产资源的重要产地。该矿区燕山期中酸性岩浆喷发-侵入活动强烈,原生矿体主要呈似层状、透镜状、脉状、囊状产于安山岩、闪长玢岩、凝灰岩等火山岩中,大部分赋矿围岩蚀变发育,主要有矽卡岩化、绿泥石化、绿帘石化、硅化、黑云母化、碳酸盐化等。通过对矿石组构、矿物共生组合、围岩蚀变特征分析,该矿床形成划分为岩浆期和热液期2个成矿期,进一步分为3个成矿阶段:透辉石-石榴子石-磁铁矿阶段、透辉石-石榴子石-透闪石-绿泥石-磁铁矿阶段、黄铁矿(黄铜矿)-镜铁矿-碳酸盐矿物阶段。笔者在野外地质调查和室内分析研究的基础上,认为罗文铁矿矿床成因与火山-次火山岩及其热液活动有关,成矿主要受火山机构尤其是火山口、火山颈相控制,属火山-次火山岩型铁矿床。  相似文献   

6.
新疆乌伦布拉隐爆角烁岩筒型斑岩铜矿成矿地质特征   总被引：8，自引：0，他引：8  
矿床直接产于一套浅成一超浅成或次火山侵入的花岗质潜火山杂岩中,赋矿岩为斜长花岗岩、石英闪长岩、闪长岩及英安玢岩质隐爆角砾岩。矿石矿物有孔誉石、兰铜矿、兰辉铜矿、赤铜矿、黄铜矿、斑铜矿、矿石结构构造为交代残余结构、包含结构和星点状、细脉状、网脉状、团块状构造、围岩蚀变为硅化、赤铁矿化、碳酸盐化、绢云母化和绿泥石化。成矿温度为１１０℃、  相似文献   

7.
方维萱 《地球科学进展》2012,27(10):1178-1184
在铁质苦橄岩—铁质安山岩、钛铁辉长岩—钛铁质闪长岩和二长岩—二长斑岩岩体附近,同岩浆侵入期脆韧性剪切带中构造岩相和热液角砾岩相,它们是铁氧化物铜金型(IOCG)矿床含矿岩相学类型。总体垂向蚀变分带为:上部为粘土化—绢云母化—赤铁矿蚀变带,中部钾质蚀变相带(电气石—铁质)+热液角砾岩化相带,下部钠质蚀变相(铁质)—热液角砾岩化带。围绕二长斑岩—二长闪长岩舌状侵入体形成电气石蚀变岩相带,属于汽成热液蚀变中心。大型—超大型IOCG矿床具有多期蚀变相系叠加特征,不同成因的热液角砾岩化相带发育、异时同位多期蚀变岩相叠加和汽成热液蚀变相发育等是寻找大型—超大型IOCG矿床标志。  相似文献   

8.
新疆塔吾尔别克金矿位于著名的阿希金矿附近,矿床产于下石炭统大哈拉军山组第5段安山岩及安山质凝灰岩中,矿床主要受NW—NNW向构造蚀变带的控制,同时次火山相二长斑岩、爆破角砾岩筒(隐爆角砾岩)对成矿也具控制作用;蚀变类型主要有黄铁绢英岩化、硅化、碳酸盐化,热液成矿期包括石英-黄铁矿、石英-硫化物和石英-碳酸盐等3个阶段,形成蚀变岩型、石英脉型和石英-碳酸盐脉型3种金矿化类型,表生期形成氧化金矿。在阐述矿床地质特征基础上,归纳出构造控矿规律、火山-次火山岩体控矿规律、中-低温成矿规律和多因复合成矿规律,综合勘查和研究成果,认为矿床的成因类型为与晚古生代早-中期火山热液有关、有次火山(斑岩型、爆破角砾岩筒型和隐爆角砾岩型)热液成矿作用叠加的浅成低温热液型金矿床。  相似文献   

9.
连长云  章革  元春华  杨凯 《中国地质》2005,32(3):483-495
便携式短波红外光谱仪（PIMA）是利用短波红外光谱测量技术，对肉眼难以识别的层状硅酸盐、粘土、碳酸盐以及部分硫酸盐矿物进行快速识别的实用仪器。通过不同地质环境的光谱参考数据库及计算机数据处理软件，辅之野外观察和必要的岩石学分析，可以从PIMA测量获得的谱线中得出研究区蚀变矿物组合的信息。应用蚀变矿物组合，结合其他勘探数据，有利于确定钻孔的位置，指导区域勘探工作。PIMA可应用于许多成矿环境中，包括高硫化物、低硫化物热液成矿系统、斑岩成矿系统、中温热液成矿系统、沉积岩中的金-铜矿床、铀矿床、火山成因块状硫化物矿床和金伯利岩矿床。已有的研究表明，PIMA可以快速获得和处理短波红外光谱数据并形成蚀变矿物钻孔柱状分布图或平面分布图，这些信息对找矿靶区的确定至关重要。应用PIMA在新疆土屋斑岩铜矿区开展了系统的蚀变矿物填图工作，有效地识别出镁绿泥石、铁绿泥石、蒙脱石、白云母、黑云母等蚀变矿物，这些蚀变矿物的类型和丰度与岩石鉴定结果基本一致，在此基础上，建立了土屋斑岩铜矿区蚀变矿物组合及其分带模式，并与传统的分带模式进行了对比。最后总结了土屋斑岩铜矿区PIMA找矿模型，该模型对土屋斑岩铜矿区及未知地区矿产勘查工作具有指导意义。  相似文献   

10.
富城花岗岩体位于赣南会昌盆地东侧,该岩体西部与橄榄玄粗岩系列火山岩接触,河草坑铀矿田就产于该花岗岩体的内外接触带中。在矿区外围花岗岩中发育大面积的蚀变带,其中的黑云母普遍蚀变为绿泥石。为了深入探讨蚀变与铀矿化的关系,文章运用电子探针技术对该蚀变带的黑云母及其蚀变产物绿泥石进行了矿物化学研究。结果表明,黑云母大部分属铁叶云母,估算出富城花岗岩岩浆的氧逸度lg(f O2)值约为-15.0~-14.3,氧逸度较低,源岩为还原性较强的岩石,有利于铀预富集于源区中;富城产铀花岗岩中黑云母的w(F)高达1.41%~2.01%,表明花岗质岩浆富F,而富F岩浆中U溶解度高,可能是富城岩体富铀的重要原因之一。黑云母被绿泥石交代后呈黑云母假象,绿泥石矿物化学分析结果表明,绿泥石以鲕绿泥石和蠕绿泥石为主,属于富铁的绿泥石,主要形成于还原环境;绿泥石的形成温度介于246~307℃之间,平均276℃。全岩U、Th含量分析结果表明,上部"红化"蚀变层中的w(U)(3.5×10-6~9.4×10-6,平均6.6×10-6)明显低于下部"绿色"蚀变层(7.7×10-6~23.1×10-6,平均13.9×10-6),而"红化"蚀变层与"绿色"蚀变层的Th含量相似,w(Th)平均值分别为35.7×10-6和36.5×10-6。矿前期的带状面型"绿色"蚀变层活化了矿物晶格中的结构铀,后期高氧逸度的流体萃取"绿色"蚀变层中已经活化了的铀而形成含铀热液,经迁移在还原带附近沉淀成矿。Th的价态(正四价)难以随这种氧化还原条件的改变而改变,因此未参与流体成矿过程。  相似文献   

11.
The dissolution of H2O and CO2 in structurally dense, nominally anhydrous and non-carbonate oxide matrices such as MgO and CaO is reviewed. H2O and CO2 are treated as gaseous oxide components which enter into solid solution with the refractory oxide hosts. They form anion complexes associated with cation vacancy sites. Evidence is presented that OH? pairs which derive from the dissolution of H2O are subject to a charge transfer (CT) conversion into peroxy moieties and molecular hydrogen, O 2 2? ... H2. Because the O 2 2? moiety is small (O?-O? distance ≈ 1.5 Å) high pressure probably favors the CT conversion. Mass spectroscopic studies show that molecular H2 may be lost from the solid which retains excess oxygen in the form of O 2 2? , leading to the release of atomic O. The dissociation of O 2 2? moieties into a vacancy-bound O? state and an unbound O? state can be followed by measuring the internal redox reactions involving transition metal impurities, the transient paramagnetism of the O? and their effect on the d.c. conductivity. Evidence is presented that CO2 molecules dissolve dissociatively in the structurally dense oxide matrix, as if they were first to dissociate into CO+O and then to form separate solute moieties CO 2 2? and O 2 2? , both associated with cation vacancy sites. In the CO 2 2? moiety (C-O? distance 1.2–1.3 Å, OCO angle ≈ 130°) the C atom probably sits off center. The transition of the C atom into interstitial sites is accompanied by dissociation of the CO 2 2? moiety into CO? and O?. This transition can be followed by infrared spectroscopy, using OH? as local probes. Further support derives from magnetic susceptibility, thermal expansion, low frequency dielectric loss and low temperature deformation measurements. The recently observed emission of O and Mg atoms besides a variety of molecules such as CO, CO2, CH4, HCN and other hydrocarbons during impact fracture of MgO single crystals is presented and discussed in the light of the other experimental data.  相似文献   

12.
There are few inter-African country urban analyses because of the continent’s enormous size and socioeconomic diversity, language barriers, and wide variations in national and regional urban research capacity. Nevertheless, comparative urban studies are critical in understanding contemporary African urbanization. In this comparative spatial and temporal analysis of Ghana and Kenya’s urbanization, we find that both countries are urbanizing rapidly and are faced with many common urban problems. Moreover, Ghana is more urbanized than Kenya and has a larger indigenous urban imprint and a more widely dispersed urban pattern. Besides their physiographic and population conditions, we trace these countries’ convergent and divergent urban trends to their shared but unique experiences of colonialism, nationalism and globalization.  相似文献   

13.
Using improved analytical techniques, which reduce the Re blanks by factors of 8 to 10, we report new Re-Os data on low Re and low PGE pallasites (PAL-anom) and IIIAB irons. The new pallasite samples nearly double the observed range in Re/Os for pallasites and allow the determination of an isochron of slope 0.0775 ± 0.0008 (T = 4.50 ± 0.04 Ga, using the adjusted λ187Re = 1.66 × 10−11 a−1) and initial (187Os/188Os)0 = 0.09599 ± 0.00046. If the data on different groups of pallasites (including the “anomalous” pallasites) are considered to define a whole-rock isochron, their formation would appear to be distinctly younger than for the iron meteorites by ∼60 Ma. Five IIIAB irons (Acuna, Bella Roca, Chupaderos, Grant, and Bear Creek), with Re contents ranging from 0.9 to 2.8 ppb, show limited Re/Os fractionation and plot within errors on the IIAB iron meteorite isochron of slope 0.07848 ± 0.00018 (T = 4.56 ± 0.01 Ga) and initial (187Os/188Os)0 = 0.09563 ± 0.00011. Many of the meteorites were analyzed also for Pd-Ag and show 107Ag enrichments correlated with Pd/Ag, requiring early formation and fractionation of the FeNi metal, in a narrow time interval, after injection of live 107Pd (t1/2 = 6.5 Ma) into the solar nebula. Based on Pd-Ag, the typical range in relative ages of these meteorites is ≤10 Ma. The Pd-Ag results suggest early formation and preservation of the 107Pd-107Ag systematics, both for IIIAB irons and for pallasites, while the younger Re-Os apparent age for pallasites suggests that the Re-Os system in pallasites was subject to re-equilibration. The low Re and low PGE pallasites show significant Re/Os fractionation (higher Re/Os) as the Re and PGE contents decrease. By contrast, the IIIAB irons show a restricted range in Re/Os, even for samples with extremely low Re and PGE contents. There is a good correlation of Re and Ir contents. The correlation of Re and Os contents for IIIAB irons shows a similar complex pattern as observed for IIAB irons (Morgan et al., 1995), and neither can be ascribed to a continuous fractional crystallization process with uniform solid-metal/liquid-metal distribution coefficients.  相似文献   

14.
煤中气孔和镶嵌结构及其在煤变质研究中的意义   总被引：1，自引：0，他引：1  
河南省禹县、新密和荥巩煤田山西组Ⅱ1煤的贫煤和无烟煤中,气孔发育。气孔形态有椭圆状（图版1）、圆状及不规则状（图版2）,有的几个气孔连在一起呈大的朵状气孔(图版3)。此外,在荥巩煤田西部无烟煤中还发育有镀嵌结构(图版4)。   相似文献   

15.
利用GC-MS（气相色谱—质谱仪）,对采自湖北清江流域和尚洞洞顶的土壤样品与洞内石笋样品进行分析,发现土壤中存在的七个系列单甲基支链烷烃在所有的石笋样品中均可以找到,呈现相似的分布模式,石笋中七个系列支链烷烃有可能来自洞穴滴水携带的土壤中的支链烷烃,但是也不能排除石笋原地生长的微生物的贡献。烷基环己烷的分布在土壤与石笋中呈现了相似的分布模式,但是主峰碳数有所变化,高碳数部分与低碳数部分的相对含量也发生了变化。主要原因可能是微生物选择性降解的结果,也有可能是土壤与石笋中微生物种类分布差异所造成的。本次研究初步显示了相对封闭稳定的洞穴沉积物与上覆土壤层中生物标志化合物的异同。   相似文献   

16.
At 31 sites in Finland the Zn content was determined of the epiphytic lichen Hypogymnia physodes (L.) Nyl. growing on pine and birch, the terricolous lichen Cladina spp. in pine bark, and the inner part of birch bark. The anomalous contents of Zn in H. physodes on pine and Cladina spp. in soil appeared to be strongly related to sulphide ore deposits. Anthropogenic Zn correlated closely with S and Fe in H. physodes on pine and with Fe in Cladina spp. The binding of geogenic Zn was related to iron hydroxides, and was attributed to the different uptake mechanism of S in these lichens. Elevated values of Zn in H. physodes on birch were due to both geogenic and anthropogenic sources. Zinc in pine bark increased with the Zn content in H. physodes and reached a limiting value.  相似文献   

17.
Stabilities of amphibole and chlorite in mafic and ultramafic compositions have been considered in the model system CaO+MgO+Al2O3+SiO2+H2O. From topological arguments two petrogenetic grids have been constructed. Although available experimental data in CMASH are compatible with the grid in which amphibole reacts out before chlorite in model ultramafic compositions for the pressure range 6 to 15 kbar, naturally observed mineral assemblages and some experimental data in more complex systems favour the other grid in which chlorite reacts out before amphibole at all pressures. This discrepancy between natural and model systems is due to differential movement of the dehydration equilibria of the two hydrates reflecting the variation of activity of H2O or of components other than CMASH.  相似文献   

18.
Aqueous extraction contributes to the formation and weathering of planetary materials and renders electrolytes such as phosphate available for biology. In this context, the solubility of phosphate is measured in planetary materials, represented by the Mars meteorites Nakhla, Dar al Gani 476 (DaG 476), Elephant Morraine 79001 (EETA 79001), and terrestrial analogs, and in the Murchison CM2 and Allende CV3 carbonaceous chondrites. The Mars meteorites contain high levels of phosphate that is readily extracted by water, up to 15 mg kg−1 in Nakhla and DaG 476 and 38 mg kg−1 in EETA 79001, while the terrestrial analogs and the carbonaceous chondrites contain 0.5 to 6 mg kg−1. Correspondingly, high phosphate concentrations of 4 to >28 mg L−1 are obtained in extracts of the Mars meteorites at high solid/solution ratios, exceeding the concentrations of 0.4 to 2.0 mg L−1 in the extracts of the terrestrial analogs. A wide range of planetary conditions, including N2 and CO2 atmospheres, solid/solution ratios of 0.01 to 1.0 kg L−1, extraction times of 1 to 21 d, and temperatures of 20 to 121°C affect the amounts of extractable phosphate by factors of only 2 to 5 in most materials. Phosphate-fixing capacity and exchangeable phosphate are assessed by the isotopic exchange kinetics (IEK) method, which quantifies the amount of P isotopically exchangeable within 1 min (E1min) and between 1 min and 3 months (E1min-3m) and the amount of P that cannot be exchanged within 3 months (E>3m). The IEK results show that the DaG 476 Mars meteorite and terrestrial analogs have low P-fixing capacities, while the carbonaceous chondrites have high P-fixing capacities. Aqueous processing under early planetary CO2 atmospheres has large effects on the available phosphate. For example, the fraction of total P that is exchangeable in 3 months increases from 1.6 to 11%, 13 to 51.6%, and 43.9 to 90.4% in the DaG 476 Mars meteorite, Allende, and Murchison, respectively. The results show that solutions with high phosphate concentrations can form in the pores of planetary lava ash and basalts and in carbonaceous asteroids and meteorites. These solutions can help prebiotic synthesis and early microbial nutrition. The Martian and carbonaceous chondrite materials contain sufficient phosphate for space-based agriculture.  相似文献   

19.
The evolution of the border region of part or all of a craton, on the basis of geological data gathered from Mexico, may best be described in terms of geotectonic cycles. These consist, in chronological order, of (1) an orthogeosynclinal phase (eu- and miogeosynclines) with or without initial magmatic activity, (2) an anatexitic phase consisting of batholith emplacement with attendant regional metamorphism in the eugeosyncline and deposition of a clastic or flysch wedge over the miogeosyncline, (3) an orogenic phase consisting principally of the folding and thrusting of the sediments of the miogeosyncline together with the clastic or flysch wedge against the foreland, and (4) a taphrogenic or block-faulting phase accompanied by (a) accumulation of post-orogenic debris or molasse, (b) subsequent magmatic activity consisting largely of igneous extrusions with fewer intrusions, and (c) final magmatic activity consisting of igneous extrusions. A region that has gone through the above phases of a geotectonic cycle may be termed a structural belt. In the post-Precambrian geologic history of Mexico, three geotectonic cycles are recognized: one occurred along the Pacific border of Mexico between Cambrian and middle Jurassic (?) time (Jaliscoan geotectonic cycle), the second occurred along the present Gulf of Mexico border of the country at the same time (Huastecan geotectonic cycle), and the third occurred over the entire country from the United States border to the Guatemalan border between Late Jurassic and Pliocene time (Mexican geotectonic cycle). The early Mesozoic clastic rocks in northwestern Mexico may signify a fourth geotectonic cycle in that region. In the three recognized geotectonic cycles, however, the geologic record shows only two orogenic phases, one of which occurred in late Paleozoic time in an arcuate belt along the eastern side of Mexico (Coahuilan orogeny), and the other in early Tertiary time in a belt traversing central Mexico from the United States border to the Guatemalan border (Hidalgoan orogeny).  相似文献   

20.
公司法人治理结构是公司制的核心。本文从分析上市公司、试点企业公司法人治理设立和运作现状入手，着重分析了公司法人治理结构存在的问题和困难所在，总结经验教训，提出了建立和完善公司法人治理结构的对策建议。  相似文献   

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