| 湖南郴州枞树板铅锌矿X光组构分析 |
| 点此下载全文 |
| 引用本文：陈柏林,刘建民,董法先.2000.湖南郴州枞树板铅锌矿X光组构分析[J].地球学报,21(3):266-272. |
| DOI： |
| 摘要点击次数: 2695 |
| 全文下载次数: 2258 |
|
| 基金项目:地矿部定向基金项目“湖南郴县枞树板地区地质构造特征和富铅锌矿控矿条件研究”部分成果 |
|
| 中文摘要:作者通过对湖南郴州枞树板铅锌矿围岩及含矿构造带岩石的X光岩组分析，认为在构造变形过程中，原岩粒度越细，对变形的反映越敏感。在相同的变形条件下，较细的变质砂岩石的石英定向组构比较粗的变质砂岩内明显，板岩和粉砂质板岩的定向组构最明显。枞树板地区近EW向褶皱变形组构表现强烈，近SN向褶皱变形组构较弱。矿化热液的蚀变作用破坏了岩石中早期褶皱变形组构，但铅锌矿脉内的石英没有明显的生长组构，说明在矿化和含矿石英脉成生过程中没有明显的张性充填结晶表现，而是一种以交代为主的矿化形式。这与从其它地质地球化学研究取得的关于本 |
| 中文关键词:X光衍射 组构分析 构造变形 湖南枞树板 |
| |
| X-ray Analysis of Deformed Rocks from the Congshuban Pb-Zn Deposit, Hunan |
|
|
| Abstract:Based on the X-ray petrofabrics analysis of the wall rocks and deformed rocks from the ore-bearing structural zone of the Congshuban Pb-Zn deposit, Hunan Province, the authors draw some conclusions. First, the smaller the fragments of the clastic rocks, the more sensitive the reaction of petrofabric to structural deformation;the fabrics of siltstone and slate are stronger than those of grit and fine sandrocks. Second, the EW-trending fold has an obvious fabric, while SN-trending fold is characterized by weak oriented fabrics. Third, the alteaation of ore-baring hydrothermal solutions destroyed the fabric of early fold, but there is not an oriented crystallized fabric of quartz in the Pb-Zn ore vein. Therefore, in the process of crystallization and formation of ore veins, there exists no extensional stress for filling mineralizastion and crystallizaion of quartz crystals into combs;therefore, metasomatism is the main alteration and mineralization form. All this is consistent with the viewpoints on the genesis of the deposit reached by geological and geochemical studies. |
| keywords:X-ray diffraction petrofabrics analysis structural deformation Congshuban of Hunan |
| 查看全文 查看/发表评论 下载PDF阅读器 |
