Forming conditions and mechanism for the fluid ore - forming system of the copper , gold deposits in the middle and lower reaches of the yangtze river area 长江中下游铜金矿床成矿流体系统的形成条件及机理长江中下游铜金矿床成矿流体系统的形成条件及机理
Through time domain induced polarization method , it is obviously that this copper - gold ore body has a vast scales and a great thickness with a depth of more than two hundred meters 通过时间域激发极化法测量，表明本区铜金矿体具有规模大，厚度大的特点，走向上向北东和南西两个方向延伸，深度达200米以上。
By the study of metallogenic geologic characteristics of the various gold deposits , the author sets up the ore - forming model of some typical deposits such as shuangqishan deposit and zhijinshan deposit etc . . it is considered that the gold deposits of metamorphic rock category and the volcanic rock category are the main gold - prospecting categories and carlin gold deposit and mulongtao gold deposit are the potential categories in fujian province 系统总结了福建省各类型金矿的成矿地质特征，建立了双旗山金矿和紫金山铜金矿等典型矿床的成矿模式，提出了变质岩型金矿和火山岩型金矿是福建省金矿找矿的主攻类型，卡林型金矿和穆龙套式金矿为潜在找矿类型。
There are three genetic types of mineral deposits in the beiya ore district : cu - au polymetallic deposits related to alkaline porphyries , comprising porphyritic cu - au deposits and polymetallic skarn deposits related to quartz - albite porphyry and quartz - k - feldspar porphyry ; fe - au deposits related to gabbro or basalt magma , consisting of magmatic fe - au deposits and sedimentary polymetallic deposits formed in caves and lakes ; and palaeo - placers formed at the weathering surface , in lakes and in karsts 北衙金矿有3种成因不同的矿床：与碱性斑岩有关的铜金多金属矿，包括与石英钠长斑岩和石英正长斑岩有关的斑岩型铜金矿床和矽卡岩型多金属矿床；与辉长玄武岩浆有关的铁金矿床，包括熔浆型铁金矿床和喷流沉积型多金属矿床，后者又有洞穴和湖相沉积环境之分；及古砂矿，有古风化壳型砂矿、河湖相古砂矿和洞穴沉积古砂矿。
There are two series of cu , au deposits , the stratiformed deposits and the intrusive - related ones in the mineralization belt of the middle and lower reaches of the yangtze river area . comparative studies on forming geodynamic backgrounds , geological and geochemical conditions of the ore - forming systems have been undertaken in this paper . the stratiformed deposits were formed in hercynian period by submarine exhalation - sedimentation sedex of hot brine through the synchronous basement faults in a tensional environmental , and the intrusive - related deposits were formed in yenshanian in a tensional or a transitional period to tensional environment during the upper mantle doming by water - rock interaction and complex transport - chemical reaction dynamic processes , the ore - forming fluids were mainly magmatic water from melt - fluid partition and some meteoric water 成矿流体系统形成的地球动力学背景及地质地球化学条件对比研究表明，赋存于石炭系中的层状铜金矿床是海西期拉张背景下热卤水沿同生断裂经喷流作用形成的海底喷流热水沉积矿床与燕山期中酸性侵入岩有关的铜金矿床是在上地幔隆起张性或向张性过渡背景下形成的，是中酸性岩浆经熔体流体分离作用形成的岩浆热液与大气降水混合，经水岩作用等复杂的输运和化学反应耦合过程的动力学产物。
According to the geological background of the eastern section of daye maopu ~ yangxin liangjianqiao fracture zone , the characters of the known mineral deposits and the comprehensive analysis of the previous geologic work , and in combination of the characters of the known mineral deposits in the western section and the successful ore searching experience of jiguanzui copper - gold deposit , this paper analyses that there is large amount of ore searching information of hidden porphyry copper - molybdenum - gold deposit in the place where the eastern section of the east - west fracture zone and the edge of yangxin volcanic - rock sedimentary basin intersect , and infers that there occurs the copper - molybdenum - gold ore - forming massif at the edge of yangxin volcanic - rock sedimentary basin 摘要通过大冶毛铺阳新两剑桥东西向断裂带东段地质背景、已知矿床地质特征及前人地质工作的综合分析，结合西段已知矿床的特征和鸡冠嘴铜金矿床成功的找矿经验，分析东西向断裂带的东段与阳新火山岩沉积盆地边缘交汇地段存在大量的隐伏斑岩型铜钼金矿床的找矿信息，推断阳新火山岩沉积盆地边缘存在隐伏含铜钼金成矿岩体。
By applying the theory and method of geological anomaly , it is focused on the analysis of the characters of major geological anomalies and their effect of mineralization in daye - jiurui region . the analysis result shows that the basement fault anomalies control a few major large hidden batholiths and their associated orefields ; that the anomalies of cover structure confine most cu - au deposits and fe - cu deposits within their scope ; that the geochemical anomalies and lithofacies - paleogeographical anomalies are major geological factors leading to trataboundness of some cu - au deposits ; that the anomalies of rock operties provide the favorable chemical and physical conditions for the ore - forming process , including the seepage , circulation , convergence and deposit of ore - bearing hydrothermal solution ; that the anomalous ctive stage of mesozoic magmatite is almost consistent with the major mineralization epoch of the fe , cu deposits , and the structure of multi - levels , and the zoning in magmatic system determine the spatial distribution of the mineralization system . then , based on the above analysis , a comprehensive variate , geological combination entropy , is brought forward for reflecting the complex degree of the combination of geological ore - controlling factors . after circumscribing the anomalies of geological combination entropy , the relations between the anomalies and ore deposits are determined 从地质异常的角度，重点分析了大冶九瑞地区主要地质异常的特征及其对成矿的影响.由分析可知：基底断裂异常控制了本区若干重要规模较大的隐伏岩基及伴生矿田，而盖层构造异常控制铜金矿床和铁铜矿床的空间位置；地层的地球化学异常和岩相古地理异常是造成一些铜金矿床层控性的主要地质因素；盖层的岩性异常为含矿热液的渗流、循环、聚集和矿质沉淀等一系列成矿作用提供了有利的物理和化学条件；中生代岩浆岩的异常活动期也是本区主要的铁铜成矿期，岩浆岩系统的多层分枝和分带性结构控制了本区成矿系统的三维空间分布.在上述分析的基础上，构置了地质组合熵作为反映控矿地质因素组合系统结构复杂程度的综合变量，并圈定出组合熵异常，由此确定了综合地质异常与矿床的关系
Xiongcun copper - gold ore deposit is located in gangdese metallogenetic belt with a large scale . the ore body mainly exists in the second lithoid unit ' s tuffs and the third lithoid unit ' s dacite tufa of the cretaceous volcanic stratum , which are not only mother rock but also mineralized body 雄村铜金矿床处于冈底斯成矿带，矿床规模巨大，矿体主要赋存于白垩系火山岩地层第二岩性单元的黄铁绢英岩化硅化凝灰岩和第三岩性单元英安质疑灰岩中，上述岩石既是赋矿围岩又是矿化体。
