Analysis of the Ore-Controlling Structure of Ductile Shear Zone Type Gold Deposit in Southern Beishan Area, Gansu, Northwest China

The ductile shear zone-type gold deposit is a kind that both the ore-forming mechanism and ore-controlling factors are closely related to the ductile shear zone and its evolution. Ductile shear zone develops in Beishan area, Gansu of Northwest China, and develops especially well in the south belt. The controls of the ductile shear zone on gold deposits are as follows. （1） The regional distribution of gold deposits （and gold spots） is controlled by the ductile shear zone. （2） The ductile-brittle shear zone is formed in the evolution process of ductile shear zone and both are only ore-bearing structures and control the shape, attitude, scale, and distribution of mineralization zones and ore-bodies. （3） Compresso-shear ductile deformation results in that the main kind of gold mineralization is altered mylonite type and the main alteralization is metasomatic. （4） Ore-bearing fracture systems are mainly P-type ones, some D-type and R-type ones, but only individual R＇-type and T-type ones. （5） Dynamic differen- tiation and dynamic metamorphic hydrothermal solution resulting from ductile deformation is one of the sources of ore-forming fluid of gold mineralization, and this is identical with that ore-forming materials are mainly from metamorphic rocks, and ore-forming fluid is mainly composed of metamorphic water, and with the fluid inclusion and geo-chemical characteristics of the deposit. （6） There is a negative correlation between the gold abundance and susceptibility anlsotropy （P） of the altered mylonlte samples from the deposit, which shows that the gold mineralization is slightly later than the structural deformation. All above further expound the ore-forming model of the ductile shear zone type of gold deposits.

GEOLOGICAL CHARACTERISTICS OF MAIN TYPES OF GOLD DEPOSITS IN SHEAR ZONES AND SIMULATING EXPERIMENTS ON TECTONO-CONTROLLED GOLD MINERALIZATION

Gold deposits in shear zones in China can be divided into four types: ductile, brittle-ductile,ductileubrittle and britt1e. Among them, each type has its own geochemical characteristics: the Hetai gold deposit in Guangdong province for example, is a kind of mylonite type gold deposit in a ductile shear zone, and the gold ore has the forms of layer and vein; the Erjia gold deposit formed in a brittleuductile shear zone, and the gold ore, being of two types, mylonite type and cataclasticaltered rock type, has the form of vein; the Shangguan gold deposit, Henan Province, was located in a ductile-brittle shear zone, and the gold ore is of two types, cataclastic-altered rock type and quartz vein type; and the Linglong gold deposit occurs in a brittle shear zone, with the main gold ore of quartz vein type having the forms of vein and lens. Simulating experiments on tectono-controlled formation of gold ores gave us the idea that not only the samples underwent crack deformation, but also changes occurred in chemical composition of minerals, and also caused gold to be remobilized and finally filled into the newlyuproduced fissures.

Locating Mechanism of Quartz Vein Gold Deposits in Rushan, Shandong Province

According to the differences in ore-controlling structural systems and the characteristics of host rocks, textures and structures of ores and mineral associations of ores, quartz vein-type gold deposits in the Rushan area can be divided into the Rushan and Tongling styles. Rushan style gold deposits, occurring in the Kunyushan complex, include Rushan, Tangjiagou and Tongxishan gold mines. They are distributed along four NNE-trending and sinistral, compresso-shear faults with a right stepping array. A prominent characteristic of the gold mineralization is that the orebodies in neighbouring gold deposits distributed in a single ore-controlling fault zone take opposite pitches. Study of the locating structures of the quartz vein gold deposits shows that the Rushan-style gold deposits are characterized by NNE and NE zoning. Therefore, the intersections of the NE direction of the known gold deposit and the neighbouring NNE-trending fault zones are favourable for looking for gold deposits, and the ends of the curving segments of sinistral and right-stepping faults are favourable for looking for large gold deposits. Tongling-style gold deposits occur in the Sanfosan porphyritic monzonitic granite. Emplacement of gold deposits is controlled by arcuate and radiate structures formed during the intrusion of the Sanfoshan porphyritic monzonitic granite; the radiate faults controlled the distribution of orebodies and the arcuate faults controlled the pitch of the orebodies.

Structural Control of Auriferous Mineralization in the Birimian: Case of the Agbahou Deposit in the Region of Divo, Côte d’Ivoire

Located in the southwestern of the Oume-Fettekro greenstone belt, the Agbahou gold deposit is controlled by structural factors. Geophysics, teledetection and core data suggest the presence of NE and NW faults. However, the NE-faults define two major shear zones (ATZ: Agbahou Tectonic Zone and WTZ: West Tectonic Zone) that control the Agbahou gold mineralization. These first order structures are subparallel to the regional tectonic grain mostly north-east oriented. They seem to respectively develop on the both arms (eastern and western) of an anticline moderately plunging ~25° towards northeast. Each shear-zone contains several second-order shear-zones or lenses of variable direction and of 50° - 80° dip. NW-faults however correspond to strike-slip faults and their development should be related to transcurrent tectonics. They acted as control channels on the distribution of gold mineralizations. The ductile-brittle character of shear-zones favored the ascent of hydrothermal fluids and the formation of multiple auriferous quartz veins: veins Type IIa and veins Type IIb relating respectively to the shear-veins and extensional veins. However, Agbahou also shows the existence of a disseminated sulphides-bearing mineralization within host-rocks. At Agbahou, the precipitation of gold probably occurred in a post to late ductile-brittle deformation period.

Numerical modelling of structural controls on fluid flow and mineralization

This paper presents the results of a set of numerical models focussing on structural controls on hydrothermal mineralization. We first give an overview of natural phenomena of structurally-controlled ore formation and the background theory and mechanisms for such controls. We then provide the results of a group of simple 2D numerical models validated through comparison with Cu-vein structure observed near the Shilu Copper deposit （Yangchun, Guangdong Province, China） and finally a case study of 3D numerical modelling applied to the Hodgkinson Province in North Queensland （Australia）. Two modelling approaches, discrete deformation modelling and continuum coupled deformation and fluid flow modelling, are involved. The 2D model-derived patterns are remarkably consistent with the Cu-vein structure from the Shilu Copper deposit, and show that both modelling approaches can realistically simulate the mechanical behaviours of shear and dilatant fractures. The continuum coupled deformation and fluid flow model indicates that pattern of the Cu- veins near the Shilu deposit is the result of shear strain localization, development of dilation and fluid focussing into the dilatant fracture segments. The 3D case-study models （with deformation and fluid flow coupling） on the Hodgkinson Province generated a number of potential gold mineralization

Metallogenic Epoch of Nonferrous Metallic and Silver Deposits in the Jiaodong Peninsula, China and its Geological Significance

As China＇s most important gold-producing district, the Jiaodong Peninsula also contains copper, lead-zinc, molybdenum （tungsten）, and other nonferrous metal ore deposits, but the space-time and genetic relationships with gold deposits remain uncertain. To investigate the temporal relationship between these nonferrous metal and gold ore deposits, We collected the samples from a number of nonferrous metallic and silver deposits and metallogenetic rock bodies in the eastern Jiaodong Peninsula for isotopic dating. The results show that the Re-Os isotopic model ages of the Lengjia molybdenum deposit in Rongcheng range from 114.5 ± 1.8 Ma to 112.6 ± 1.5 Ma, with an average age of 113.6 ± 1.6 Ma; the LA-ICP-MS ^206pb/^238U ages of 33 zircons in the sericitization porphyritic monzogranite that hosts the Tongjiazhuang silver deposit in Rongcheng range between 122 Ma and 109 Ma, with a weighted mean age of 116.04 ± 0.95 Ma; the LA-ICP-MS ^206pb/^238U ages of 31 zircons in the copper metallogenic pyroxene monzodiorite that hosts the Kuangbei copper deposit in Rongcheng range from 126 Ma to 106 Ma, with a weighted mean age of 116.6 ± 1.7 Ma; and the LA-ICP-MS ^206pb/^238U ages of 19 zircons in the pyroxene monzodiorite surrounding the Dadengge gold and multimetal deposit in Weihai range from 113 Ma to 110 Ma, with a weighted mean age of 111.7 ± 0.6 Ma. All these results indicate that the metallogenic ages of the silver and nonferrous metallic deposits in the Jiaodong Peninsula are in a limited range from 118 Ma to 111 Ma. Previous studies have demonstrated that the isotopic ages of gold deposits in the Jiaodong Peninsula range from 123 Ma to 110 Ma, while Weideshanian magmatism occurred between 126 Ma to 108 Ma. Both these ranges are grossly consistent with the metallogenic ages of silver and nonferrous metallic deposits in this study, suggesting that the large-scale mineralization occurred in the Early Cretaceous when magmatic activities were strong. This epoch may be linked to the lithosphere thinning and the thermo-upwelling extension in eastern China at that time. In addition, field investigation also shows that gold and nonferrous metallic deposits are distributed nearby the Weideshanian granite, with the nonferrous metallic deposits lying within or surrounding the granite pluton and the gold deposits outside the granite pluton. We propose the following mineralization scenario： In the Early Cretaceous, an intensive lithospheric extension induced partial melting and degassing of the metasomatized lithospheric mantle, which resulted in the formation of mantle-derived fluids enriched in metal elements. During the rapid process of magma ascent and intrusion, crust-derived fluids were activated by the magmatic thermal dome and served to further extract ore-forming materials from the crust. These fluids may have mixed with the mantle-derived fluid to form a crust-mantle mixing-type ore-forming fluid. The high-temperature conditions in the center or in contact with the granitic magmatic thermal dome would have been favorable for the formation of porphyry-type, skarn-type, and hydrothermal-vein-type ores, thus forming a series of Mo（W）, Cu, and Pb-Zn deposits in the mid-eastern Jiaodong Peninsula. In contrast, the medium- to low-temperature conditions in the periphery of the magmatic thermal dome would have favored the deposition of gold （silver） ores under the appropriate physiochemical and structural conditions. The metaliogenic epoch of the molybdenum, copper, and silver deposits, and their spatio-temporal and genetic relations to the gold deposits, as demonstrated in this study, not only provide important insights to the study of regional metallogeny, our understanding of the metallogenesis of the Jiaodong type gold deposit, and the geodynamic background of the large-scale mineralization in the Jiaodong Peninsula, but also have practical value in guiding the mineral exploration.

滁州地区铜金矿控矿构造特征及资源潜力浅析

滁州地区横跨桐柏—大别—苏鲁和长江中下游2个成矿带,是重要的铜、金成矿区。通过野外调研和典型矿床控矿分析,明确了郯庐深大断裂带、黄破断裂和管马断裂等主要断裂构造特征及区内控岩控矿构造特征。郯庐深大断裂带和黄破断裂是区内一级控岩控矿断裂,分别控制了北北东向和北东向构造-岩浆-成矿作用,一级断裂的次级构造、层间破碎带、褶皱伸展部位和断裂交汇部位等是重要的容矿构造。生产矿山实践表明,在已有矿山深边部,斑岩-矽卡岩型铜金矿和石英脉-构造蚀变岩型金矿的找矿潜力较大,是本区下一步地质找矿工作重点勘查和开发利用目标。

贵州某卡林型金矿的载金矿物特征及金赋存状态

为合理制定提金工艺及高效回收金,采用光学显微镜下鉴定,结合化学分析、X射线衍射(XRD)、X射线光电子能谱(XPS)及电子探针X射线显微分析(EPMA)等手段,研究了贵州某卡林型金矿的载金矿物特征及金赋存状态。结果表明,矿石含金4.30 g/t,w(S)、w(As)分别为2.97%和0.35%。S、As主要以-1价态存在,说明矿石为原生金矿。矿石主要为粒状、草莓状、生物假象、交代和条带状结构,矿石中主要硫化物为含砷黄铁矿和毒砂,主要脉石矿物为石英、碳酸盐矿物和绢云母等。含砷黄铁矿多与石英和碳酸盐矿物连生,少数被隐晶质石英和炭泥质包裹,部分呈环带或弯曲状生物遗迹特征。94.88%的金以包裹金形式存在,含砷黄铁矿为主要载金矿物,其中金分布率为75.81%。不同形态的含砷黄铁矿中Au含量高低为:细粒状>生物碎屑状>草莓状>粗粒状,Au-S、Au-As之间均无正相关性。含砷黄铁矿中均赋存有晶格金和纳米金颗粒,金整体呈不均匀稀疏浸染状分布。研究结果可为贵州及其它地区卡林型金矿预处理-浸金工艺的制定提供理论指导,有效氧化或破坏载金含砷黄铁矿和石英包裹体及防止预处理过程中金的二次包裹有利于提高金回收率。

胶西北地区谢家沟金矿床构造控矿规律及找矿方向

谢家沟金矿床位于胶西北招平断裂带的分支断裂上,已进入危机矿山行列,研究谢家沟金矿床的构造控矿规律对于其深部及外围找矿有重要意义。在矿区现场开展构造地质调查,对矿脉及脉岩进行产状测量和统计,结合岩矿分析和同位素测试成果,重新厘定了矿区成矿构造系统。经研究可将成矿构造演化序列分为成矿前、成矿期和成矿后3期。矿区构造控矿规律表现为:矿体在走向上具有明显的NNE向优选方位;矿体总体由SW向NE侧伏;脉组呈左行雁列产出并具有明显的矿化中心;矿化分带与构造蚀变分带具有一致性。本文提出了2个找矿预测靶区,为下一步找矿增储提供参考。

冀东冷口金成矿带“长城式”金矿成矿作用研究

冀东地区燕山期开始进入了幔枝构造发育期,冀东幔枝构造的形成控制大规模的岩浆侵入活动和金成矿作用。沿冷口断裂带分布着多个“长城式”金矿,主要受外围拆离滑脱带控制,属于构造控矿,主拆离滑脱带为金成矿流体的运移提供了通道,次级拆离滑脱带、层间滑动带及盖层岩石中的裂隙、节理等为成矿物质富集提供了富集空间,有向深部厚度变大的特点,为远程低温热液型矿床,肖营子花岗岩浆为金成矿提供了部分成矿物质。

豫西前河金矿床构造原生晕特征及其对深部找矿的指示

前河金矿床是典型构造蚀变岩型金矿床,矿体受近东西向构造控制。构造研究表明,该矿区经历了多期演化,形成近东西向、北东向、南北向等3个方向的构造,不同构造对矿体起着控制或破坏作用。F_(4)断裂为近东西向构造的典型代表,为Ⅳ号矿带的容矿构造。通过对Ⅳ号矿带进行构造原生晕分析,认为头晕元素整体以中、内带异常为主,近矿晕元素以内带异常为主,尾晕元素分布差别较大,可能与元素变异系数变化较大有关。葚沟矿段00中段83勘探线深部、石家岭矿段260中段43勘探线—45勘探线深部均具有较好的找矿前景。

湖南石坳金矿床地质特征及成因探讨

石坳金矿地处湘东北幕阜山-望湘隆起带中部,望湘岩体及金井岩体东北部外接触带上,是我国南方重要的金成矿区域。通过对矿区赋矿地层、含矿构造、矿脉特征、矿石特征以及深部矿化富集规律等分析研究,认为矿区内金矿脉赋存于新元古界冷家溪群坪原组地层中,矿区内NS向、SEE-NWW向断裂构造为容矿构造,矿区内含金矿化以蚀变破碎板岩型及含金石英脉型为主,与金矿化有关的蚀变主要有黄铁矿化、硅化、毒砂化。矿床成因类型为中(低)温热液金矿床。结合最新的勘查成果及成矿规律,预测矿区西部大源岭地区及矿区边深部有较大找矿潜力。

海南省昌江县土外山金矿床矿体赋存规律及找矿方向

土外山金矿床经历了近20年的开采,保有储量显著减少,亟须探矿增储。通过对区域成矿背景、矿区及矿床地质特征的分析,区域上的北东向戈枕断裂对金矿床分布具有控制作用,土外山金矿床由西向东划分了4个矿带。矿体受戈枕断裂上盘次级断裂控制。由西向东矿体间的无矿间距一般10~50 m,单一矿体走向无矿间距40~80 m。矿体被多组北东向断裂联合控制,呈现菱形网格状分布特征,且反映了断裂交会处赋矿的特点。根据已圈定的3处富矿柱特征及其赋存规律,预测第四富矿柱在10勘探线和12勘探线。各富矿柱之间有低品位薄矿体和矿化,以及两侧的小透镜状富矿体产出。依据控矿构造的近似等间距分布、矿体的侧伏及侧伏角、矿体垂深的分段富矿规律,可在不同富集矿段寻找蚀变岩型矿体。

湖南水口山矿田金矿控矿因素、成矿演化及成矿预测

水口山矿田是一大型金多金属矿田,其金资源储量达90 t。通过系统总结各金矿床地质特征,初步厘定金矿化期次,进而分析控矿因素,对成矿演化进行探讨,建立成矿模型,进行成矿预测。研究表明,区内金矿化与地层、倒转褶皱、断裂、花岗岩体关系密切。其中地层控矿主要表现为成矿层位赋存于当冲组、栖霞组层间破碎带或与岩体接触带中;构造控矿主要表现为背斜虚脱空间、层间破碎带、断裂带等是矿化富集的有利部位;岩浆岩控矿表现除岩体接触带控矿外,还有不同成因类型金矿围绕岩体呈分带现象,围绕岩体由地表到深部表现为氧化淋滤型独立型金矿—接触破碎独立型金矿—浅成低温热液独立型金矿—远距离热液充填交代伴生型金矿—接触交代伴生型金矿。金矿石沉淀与来自岩浆热液的成矿流体及大气降水引发的水岩反应、混合作用、沸腾作用有关,是成矿的主要3种机制。

广西金牙金矿床控矿因素及找矿方向

金牙金矿床位处滇黔桂被动陆缘,南盘江-右江裂谷盆地桂西北坳陷东北部。本文通过介绍金牙金矿床矿区地质特征、矿体地质特征,分析控矿因素,认为金牙金矿为断裂构造及岩性双向控矿。经过钻探工程控制证实矿区断层往东部持续延伸,且为主要控矿构造,工程对深部矿体的追索仍未尖灭,矿体延伸有一定的稳定性和规模,下步往东侧深部找矿潜力大。

安徽蚌埠隆起区金矿与胶东金矿构造控矿作用对比及找矿建议

蚌埠隆起区位于华北板块南缘,为安徽省重要的金矿成矿区之一,其与胶东成矿区具有相似的成矿背景。蚌埠隆起区金矿与胶东金矿的空间分布与成矿作用均与断裂构造密切相关,本文系统对比了两个成矿区构造样式和主要控矿构造的异同,结合蚌埠隆起区金矿的勘查成果,对本区金矿的找矿技术方法和找矿方向进行了分析。

造山型金矿构造控矿作用

造山型金矿具有重要经济价值,其成矿理论研究对全球金矿勘查和开采具有重要意义。为了更好的理解挤压和伸展背景下深成-中成-浅成造山型金矿成矿过程中控矿断裂形成过程、构造控制流体流动、流体就位机制以及矿化样式之间的关系,本文系统综述了岩石破裂原理、挤压和伸展体制断裂网络结构,全面梳理全球不同构造体制和成矿深度造山型金矿的构造控矿样式、矿脉几何学和蚀变矿化网络结构,取得以下认识:(1)在挤压背景下,深成金矿通常受韧-脆性逆冲剪切带控制,发育窄蚀变带、大脉状和层压状矿石以及黑云母-角闪石-磁黄铁矿等蚀变矿化组合;中成金矿受脆-韧性逆冲剪切带、褶皱转折端的滑脱空间和里德尔剪切派生裂隙控制,发育窄-中等宽度蚀变带、层压状和网脉状矿石以及绿泥石-方解石-绢云母-黄铁矿化蚀变矿化组合;浅成金矿受脆性剪切带和次级毛细裂隙控制,发育宽蚀变带、角砾状和浸染状矿石以及绢云母-碳酸盐-硫化物(黄铁矿、毒砂)等蚀变矿化组合。研究表明上述不同成矿深度金矿构造-蚀变-矿化差异由构造、流体压力、水岩反应强度和岩石抗张强度等共同控制,流体就位和矿质沉淀机制由深部的强构造流体互馈、弱水岩反应强度向浅部的弱构造流体互馈、强水岩反应强度转换。(2)在伸展背景下,深成金矿通常受韧-脆性张剪断裂带控制,发育窄蚀变带、大脉状矿石以及黑云母-角闪石-斜长石-磁黄铁矿等蚀变矿化组合;中成金矿受脆-韧性张剪断裂带控制,发育窄-中等宽度蚀变带、断层充填脉和网脉状矿石以及绢云母化-硅化-绿泥石化蚀变矿化组合;浅成金矿受脆性断层角砾破碎带控制,发育宽蚀变带、角砾状和浸染状矿石以及绢云母-碳酸盐-硫化物(黄铁矿、毒砂)等蚀变矿化组合。伸展体制控矿构造多为先存断裂改造和再活化,当先存断裂优选定向时断裂发生再活化,成矿流体以充填断裂成矿为主,当先存断裂差异定向时流体压力驱动水力破裂形成新的断裂并改造先存构造。造山型金矿构造控矿研究已由传统的二维空间定性精细刻画逐渐向三维空间定量可视化拓展。

辽东五龙金矿鸡心岭断裂的年代学约束及其对成矿潜力的指示

五龙金矿是辽东地区形成于早白垩世的代表性石英脉型金矿,与胶东地区“玲珑式”金矿相似。胶东地区早白垩世金矿受北东向断裂控制且规模宏大,五龙金矿已知矿体主要赋存于北西向和近南北向断裂内,其北东向断裂研究程度较低、成矿潜力尚不清楚。针对五龙矿区的鸡心岭断裂开展了地质调查,对侵位其中的岩脉和热液白云母进行定年,为断裂内构造-岩浆-热液活动提供年代学约束。调查发现,鸡心岭断裂整体为脆性变形,具有多期活动的特征,依次有煌斑岩、含白云母石英脉和闪长岩脉侵入其中。测年结果显示,煌斑岩的锆石^(206)Pb/^(238)U年龄加权平均值为132.1±1.7 Ma,热液白云母的40 Ar/39 Ar坪年龄为126.8±0.5 Ma,闪长岩的锆石^(206)Pb/^(238)U年龄加权平均值为112.9±1.4 Ma。年龄数据指示,鸡心岭断裂在132 Ma之前形成,在132~113 Ma之间经历了岩浆-热液活动,依次对应区域上的早白垩世初期北北西—南南东向挤压和早白垩世中期北西—南东向/北西西—南东东向伸展背景。从现有调查程度看,鸡心岭断裂较胶东地区北东向断裂具有序次低、规模小、构造和流体活动较弱的特征。辽东地区燕山期金矿找矿应注意关注更高序次的低角度断裂,五龙一带的北东向断裂找矿工作应优先评价断裂走向变化、深部由陡变缓的部位。

岩浆核杂岩和变质核杂岩特征对比及控矿实例--南秦岭牛山-凤凰山变质核杂岩和牛山北岩浆核杂岩构造群落及控矿模式

以南秦岭牛山-凤凰山变质核杂岩和牛山北岩浆核杂岩为例,通过核杂岩的构造群落、变质程度、岩浆侵位与变形时代、构造层次与演化、控矿特征与控矿构造-蚀变岩相填图及测年研究,对比2类核杂岩的特征及其控矿作用。结果表明,2类核杂岩有相似的结构样式,但构造群落和演化差别较大。牛山-凤凰山变质核杂岩核部为新元古代武当岩群和耀岭河岩组中深变质岩,其中可见新元古代石英闪长岩和加里东期辉石岩-辉绿岩株,说明是在新元古代或加里东期形成的。核杂岩与外围震旦系-泥盆系浅变质岩间由剥离断层及韧性剪切带分割。志留系梅子垭岩组为浅变质强变形的岩片组合,发育多层次韧性剪切、固态流变、滑脱-逆冲-走滑变形3期新生面理及其置换。而牛山北岩浆核杂岩核部和外围是浅变质岩,在核部和外围填图、测试时发现新元古代、早古生代、三叠纪、侏罗纪4期侵入岩,与岩浆核杂岩相关的有三叠纪-早侏罗世二长花岗岩株和晚侏罗世花岗岩脉2期侵入岩。研究发现,与岩浆核杂岩伴随的岩浆侵位、韧性剪切变形与热变质增温-变斑晶加大-自然金沿S 2面理分布-金矿化热液蚀变等的时代均集中在晚三叠世-侏罗纪,指示了时代较新的陆内造山期岩浆核杂岩的脆-韧性剪切变形-立交桥式岩浆-热力垂向增生-热液蚀变成矿时空关联特点及深部找矿方向。

甘南阳山金矿床控矿构造的思考

阳山金矿床位于甘肃省陇南市文县境内,其大地构造位置处于西秦岭构造带的玛曲-略阳深大断裂南侧,是西秦岭地区为数有限的大型金矿床之一。该区控矿构造复杂,经过20多年的研究仍然存在很大争议。本文通过对矿区含矿构造的调查结合区域构造环境,重新厘定了含矿构造的特征,并对该矿床控矿构造的相关问题进行了讨论。研究结果显示,阳山金矿床控矿构造是以走向NEE,倾向NNW为主的偏脆性逆冲推覆构造系统,形成于俯冲-碰撞早期的韧性变形之后。含矿构造与千枚岩的千枚理没有直接的关系,可以与千枚理近于平行,或小角度斜交,或大角度斜交,主要以倾向北的断裂为主,少量为主逆冲断层上盘的倾向南的次级反向逆冲断裂,局部为顺千枚理的层间破裂。含矿构造对岩性没有选择性,但是不同岩性岩石的不同力学性质影响了含矿构造的发育与否和发育程度。阳山金矿区进一步工作中值得思考和关注的问题:(1)矿区构造格架上葛条湾-草坪梁复背斜可能不存在,也未起控矿作用;(2)成矿后断裂对矿体空间展布的影响;(3)在勘查编录中对各种构造破碎带需要详细的描述,以明确区分含矿构造与成矿后构造,为构建控矿构造体系准备素材,为进一步找矿预测和勘查工程部署提供技术支撑。