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altered fracture zones
相关语句
  蚀变破碎带
     CHARACTERS OF ALTERED FRACTURE ZONES IN YUANLIN GOLD DEPOSIT AND ITS PROSPECTING SIGNIFICANCE
     元岭金矿蚀变破碎带特征及其找矿意义
短句来源
     Authors provide the scientific basis for the metallogenetic prognosis and the evaluation of ore-bearing property of altered fracture zones.
     据此,为进一步成矿预测、评价蚀变破碎带的含矿性提供依据。
短句来源
  “altered fracture zones”译为未确定词的双语例句
     5. Being able to sieve the mineralized and altered fracture zones out of the numerous ones on the surface, the chain of the short-axis aeromagnetic anomalies are of great significance for minerogenetic prognosis.
     ⑤短轴串珠状航磁异常,能从地表众多的断裂带中筛选出有矿化蚀变的断裂带,对成矿预测有重要意义。
短句来源
     The orebodies are controlled by circular and radiant fractures, and are confined to the altered fracture zones.
     矿体受环状断裂和放射状断裂控制 ,以蚀变岩型矿化为主。
短句来源
  相似匹配句对
     ON FRACTURE ZONES
     破裂带中几个问题
短句来源
     CHARACTERS OF ALTERED FRACTURE ZONES IN YUANLIN GOLD DEPOSIT AND ITS PROSPECTING SIGNIFICANCE
     元岭金矿蚀变破碎带特征及其找矿意义
短句来源
     Fracture
     破裂
短句来源
     The orebodies are controlled by circular and radiant fractures, and are confined to the altered fracture zones.
     矿体受环状断裂和放射状断裂控制 ,以蚀变岩型矿化为主。
短句来源
     Authors provide the scientific basis for the metallogenetic prognosis and the evaluation of ore-bearing property of altered fracture zones.
     据此,为进一步成矿预测、评价蚀变破碎带的含矿性提供依据。
短句来源
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Based on the accumulation of the geological and geophysical data for many years, the geological interpretation on the regional gravity and magnetic anomalies in Nanling area of southern China is put forward in this paper as follow: Ⅰ. There are distinct gravity and magnetic anomalies indicating the fracture tectonics, and the enormously extensive gravity gradient indicating the large fracture zone at depth. On these grounds, in accordance with the extension and distribution of the fractures, they can be classified...

Based on the accumulation of the geological and geophysical data for many years, the geological interpretation on the regional gravity and magnetic anomalies in Nanling area of southern China is put forward in this paper as follow: Ⅰ. There are distinct gravity and magnetic anomalies indicating the fracture tectonics, and the enormously extensive gravity gradient indicating the large fracture zone at depth. On these grounds, in accordance with the extension and distribution of the fractures, they can be classified into four fracture series, namely, (1) Wuling Mount fracture series; (2) Hunan—Guangxi fracture series; (3)Wuyi Mount fracture series; (4)Pearl River—Chaozhou—Shantou fracture series. And they are specifically divided into 41 fracture zones to provide geophysical basis for the investigation of fracture tectonics in Nanling area. Ⅱ. It is capable to lay stress on the effect of the geological factors at depth, and reduce the interferences resulted in the complex geological features on the surface in dividing the geotectonic elements by regional gravity and magnetic anomalies. Due to the inadequate details of the current gravity and magnetic data, the geotectonic elements are divided up to third order in this paper. It would not be favorable to advance the more detail classification until much more informations would have been accumulated. Ⅲ. The regional ore-controlling fraetors for some endogenetic metallic deposits can be distinguishedly reflected by the regional gravity and magnetic anomalies: 1. All the large ore fields are located on the gravity gradient zone, and in many cases associated with clear negative gravity anomalies. This characteristic of the gravity field represente two types of geological features: (1) The gravity gradient zone indicates the occurrence of large fracture at depth. (2) The local negative gravity anomalies are in many cases caused by hidden and semi-hidden granite masses. Both geological features mentioned above play an important role in ore formation. 2. Covering almost all the large endogenetic metallic deposits there are distinct local aeromagnetic anomalies. 3. Aeromagnetic "high magnetization zone", indicating the large extention of mineralization and alteration, is an important criteria for minerogenetic prognosis. 4. The hidden rock mass and granitic contact alteration zone which are reflected by the gravity and magnetic anomalies can afford the favorable spatial position of ore formation for minerogenetic porgnosis. 5. Being able to sieve the mineralized and altered fracture zones out of the numerous ones on the surface, the chain of the short-axis aeromagnetic anomalies are of great significance for minerogenetic prognosis. In general, the specific geological conditions are needed for the formation of large-scale ore deposits. It follows that the geophysical anomalies will correspondently be induced by the specific variations of the geological factors. On the basis of the regional gravity and magnetic anomalies we obtained reflecting some regional ore-controlling factors, on which a rather detailed demonstration has been given, and a viewpoint on minerogenetic prognosis has also been proposed in this paper. Therefore, it is worth for reference in reconnaissance survey and prospecting in Nanling area henceforth.

本文根据多年积累的地质、地球物理资料,对中国南岭地区的区域重磁异常提出了如下地质解释:1.断裂构造有清晰的重磁异常反映,规模巨大的重力梯度带反映深大断裂带。按断裂展布特征,划分成4个断裂系,即①武陵山断裂系;②湘桂断裂系;③武夷山断裂系;④珠江潮汕断裂系,并具体划出了41条断裂带,为研究南岭断裂构造提供了地球物理依据。2.根据区域重磁异常划分大地构造单元能突出深部因素的作用,减少复杂的表层地质现象造成的干扰,由于资料所限,本文只划分到第三级大地构造单元,更细致的划分待积累更多资料后才宜进行。3.区域重磁异常能突出反映某些内生金属矿床的区域控矿因素:①大矿田都位于重力梯度带上并有明显的重力负异常伴生,这种重力场特征反映两种地质现象,a.前者标志深大断裂带的存在,b.后者往往是隐伏一半隐伏花岗岩体引起。这两者都对矿产形成有重要作用。②几乎所有的大型内生金属矿床上都有明显的航磁局部异常。③航磁“高磁区”是大范围矿化蚀变的反映,是成矿预测的一种重要标志。④重磁异常反映的隐伏岩体及花岗岩接触变质带,能为成矿预测提供有利于成矿的空间位置。⑤短轴串珠状航磁异常,能从地表众多的断裂带中筛选出有矿化蚀变的断裂带,对成矿预测有重...

本文根据多年积累的地质、地球物理资料,对中国南岭地区的区域重磁异常提出了如下地质解释:1.断裂构造有清晰的重磁异常反映,规模巨大的重力梯度带反映深大断裂带。按断裂展布特征,划分成4个断裂系,即①武陵山断裂系;②湘桂断裂系;③武夷山断裂系;④珠江潮汕断裂系,并具体划出了41条断裂带,为研究南岭断裂构造提供了地球物理依据。2.根据区域重磁异常划分大地构造单元能突出深部因素的作用,减少复杂的表层地质现象造成的干扰,由于资料所限,本文只划分到第三级大地构造单元,更细致的划分待积累更多资料后才宜进行。3.区域重磁异常能突出反映某些内生金属矿床的区域控矿因素:①大矿田都位于重力梯度带上并有明显的重力负异常伴生,这种重力场特征反映两种地质现象,a.前者标志深大断裂带的存在,b.后者往往是隐伏一半隐伏花岗岩体引起。这两者都对矿产形成有重要作用。②几乎所有的大型内生金属矿床上都有明显的航磁局部异常。③航磁“高磁区”是大范围矿化蚀变的反映,是成矿预测的一种重要标志。④重磁异常反映的隐伏岩体及花岗岩接触变质带,能为成矿预测提供有利于成矿的空间位置。⑤短轴串珠状航磁异常,能从地表众多的断裂带中筛选出有矿化蚀变的断裂带,对成矿预测有重要意义。总之,大矿的形成需要特殊的地质条件,而地质因素的特异变化就会产生相应的地球物理异常现象。本文根据区域重磁异常所显示的一些区域控矿因素作了较详细的阐述,提出了成矿预测意见,对南岭地区今后的普查找矿工作具有参考价值。

Gold ore bodies are enriched in altered fracture Zones between inner and border facies of diorite pipe,controlled by the occurrence of the pipe. The alteration of country rock related to gold mineralization includes silicated, carbonation,argillic and hematitization(or limonite)alteration. The ores are mainly composed of auriferous altered diorite, auriferousweathered hematitization(or limonite)diorite. An mineral is dominated by natural An,reaching to 966. 74 cororing.Natural An is coarse and giant─grained,the...

Gold ore bodies are enriched in altered fracture Zones between inner and border facies of diorite pipe,controlled by the occurrence of the pipe. The alteration of country rock related to gold mineralization includes silicated, carbonation,argillic and hematitization(or limonite)alteration. The ores are mainly composed of auriferous altered diorite, auriferousweathered hematitization(or limonite)diorite. An mineral is dominated by natural An,reaching to 966. 74 cororing.Natural An is coarse and giant─grained,the recovery rate of gravity separation is above 85 %. According to isotope,RE partition model etc., diorite pipe was formed through mixed magma intrusion upward from which ore-forming material originated. It is a low-to-moderate temperature solution gold deposit.

金矿体赋存在闪长岩岩筒内部相和边缘相接触过渡地段环边状蚀变裂隙带中。矿体受岩筒产状控制。与金矿化有关的围岩蚀变有硅化、碳酸盐化、粘土化和赤(褐)铁矿化。矿石主要由含金蚀变闪长(斑)岩和含金风化赤(褐)铁矿化闪长(斑)岩组成。金矿物以自然金为主,成色高达966.74。自然金粒度以粗一巨粒金为主,重选回收率达85%以上。根据同位素、稀土配分模式等确定闪长岩岩筒由混合岩浆上侵演化结晶而成,成矿物质与其同源,为中-低温热液形成的金矿,其类型属于蚀变闪长岩岩筒型金矿床。

Based on the comparative studies of general geolgical characters and micro element characters of three altered fracture zones in Yuanlin gold deposit, and to draw lessons from the mineralized characters of altered fracture zones of adjacent gold field, this paper expounds favourable tectonic positions to the mineralization of altered fracture zones, summarizes the relations between the characters of altered fracture zones and the intensity of mineralization indicates that the mineralization-alteration...

Based on the comparative studies of general geolgical characters and micro element characters of three altered fracture zones in Yuanlin gold deposit, and to draw lessons from the mineralized characters of altered fracture zones of adjacent gold field, this paper expounds favourable tectonic positions to the mineralization of altered fracture zones, summarizes the relations between the characters of altered fracture zones and the intensity of mineralization indicates that the mineralization-alteration elements of altered fracture zones are lowto moderate temperature assemblage,the more intense the mineralization-alteration is,the more the type of the joined elements is and the greater the quantity of the joined elements. The character of wall rocks has some effect on mineralization-alteration, the migrated chalcophile elements and migrated sulfophile iron group elements in wall rocks are favourable to gold mineralization. Authors provide the scientific basis for the metallogenetic prognosis and the evaluation of ore-bearing property of altered fracture zones.

根据对元岭金矿三条蚀变破碎带一般地质特征、微量元素特征的对比研究,并借鉴邻近矿区蚀变破碎带的矿化特征,本文阐明了元岭蚀变破碎带矿化的有利构造部位,总结了蚀变破碎带特征与矿化强度之间的关系,指出蚀变破碎带的矿化蚀变元素为中低温组合,矿化蚀变愈强则参与元素的种类愈多、数量愈大。围岩性质对矿化蚀变有一定影响,围岩中的易迁移亲铜元素和亲硫铁族无素对矿化有利。据此,为进一步成矿预测、评价蚀变破碎带的含矿性提供依据。

 
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