| 彭少梅,何绍勋.粤北新洲推覆构造外来系统中的石英脉及其与金矿化的关系[J].地质找矿论丛,1992,(3):35-47 |
| 粤北新洲推覆构造外来系统中的石英脉及其与金矿化的关系 |
| THE QUARTZ VEINS AND THEIR RELATIONSHIP WITH GOLD MINERALIZATION IN THE XINZHOU NAPPE STRUCTURE, NORTHERN GUANGDONG |
| |
| DOI：10.6053/j.issn.1001-1412.1992.3. 004 |
| 中文关键词: 粤北 推覆构造 石英脉 金矿化 |
| 英文关键词: |
| 基金项目:广东省黄金领导小组地勘办公室专项科技项目资助(编号:金研-06) |
|
| 摘要点击次数: 1144 |
| 全文下载次数: 1441 |
| 中文摘要: |
| 粤北新洲褶皱式逆冲推覆构造形成于印支—燕山期.震旦系浅变质地层组成的外来系统中,广泛发育加里东期和同推覆期石英脉.加里东期石英脉顺外来系统中第一期面理(S0∥S1)分布,呈串珠状或透镜状,同推覆期变形强烈,含微量的金属硫化物,金含量很低,形成于加里东期区域变质热液,表明加里东期区域变质作用并未使金得到富集.同推覆期石英脉顺外来系统中Ⅲ～Ⅳ级推覆断层带分布,多呈脉状,同推覆期变形较为微弱,含大量的金属硫化物,并普遍发生了强烈的金矿化,形成富硫化物石英脉型金矿床;成矿物质来自外来系统震旦系变质地层,并由同推覆期动力分异热液所携带. |
| 英文摘要: |
| The Xinzhou fold-thrust nappe structure was formed during Indosinian orogeny and Yanshanian Period,and is located in the north part of Guangdong province.There are widespread development of the Caledonian and the synthrusting quartz veins in the nappe,which is composed of Sinian strata and Cambrian Strata having been metamorphosed to low greenschist facies.The Caledonian quartz veins is distributed around the first-stage foliation(S0∥S1)and undergone very strong synthrusting deformation.These Veins contain little amount of metallic sulfides and Au resulted from the activity of the Caledonian regional metamorphosed hydrothermal solutions.The synthrusting quartz veins are controlled by the Ⅲ and Ⅳ thrust fault zones in the nappe and undergone relatively weak synthrusting deformation.These veins contain large amount of metallic sulfides and cause intense Au mineralization,which form the quartz-vein(enrichment of pyrite and arsenopyrite)typed gold deposit.The Oreforming substances of the gold deposit come mainly from the metamorphosed Sinian strata in the nappe and were brought by the dynamical segregation hydrothermal solutions formed during the thrusting. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
