| 铜陵矿集区矿田构造垂直分带 |
| 点此下载全文 |
| 引用本文：.2004.Vertical Zoning of Orefield Structures in Tongling Ore Concentration Area, Anh ui Province [J].Mineral Deposits,23(2):206~215 |
| Hits: 2412 |
| Download times: 2199 |
|
| 基金项目:国土资源部专项研究计划(编号：20010103) |
|
| 中文摘要:在对铜陵矿集区内矿田构造分类及其控矿特征分析的基础上，依据空 间分布位置将矿田控矿构造带划分为浅带、中带和深带3个层次，其空间配置为：浅带“行 、列、汇”构造样式、中带岩浆侵入接触构造体系和深带“隆中凹”构造，三者在空间上构 成了矿田构造的垂直分带。以上覆地层厚度估算矿田各层次控矿构造带的深度大约为：浅带 0～1 km；中带1～3.0 km；深带>3.0 km。三个层次的控矿构造带分别控制了热液脉型、矽 卡岩型和层控矽卡岩型等主要矿床类型。浅、中、深控矿构造带在不同的矿田常具有不同的 组合形式，可以单独出现，也可以是两两组合，当三者复合产出时则构成完整的矿田构造垂 直分带。矿田构造垂直分带的发育程度往往决定矿田的成矿特点，是控制成矿系列和“多层 楼”成矿的主要原因。 |
| 中文关键词:地质学 矿田构造 垂直分带 分带模式 铜陵矿集区 |
| |
| Vertical Zoning of Orefield Structures in Tongling Ore Concentration Area, Anh ui Province |
|
|
| Abstract:According to their ore_controlling characteristics, the orefield structures in t he Tongling ore concentration area have been classified into three types, namely the “row_line_cluster" pattern, the contact structural system of magmatic intr usion and the “depression above swell" structure. They occur respectively as ep izone, mesozone and hypozone in space, thus forming vertical zoning of the ore_c ontrolling orefield structures. Based on thickness of the covering strata, the d epths of these ore_controlling structural zones are estimated to be about 0～1 k m, 1～3.0 km, and >3.0 km, respectively. The ore_controlling structural zones at three levels control respectively hydrothermal vein_type deposits, skarn_type d eposits and stratabound skarn_type deposits. The epizone, mesozone and hypozone may have different combination forms, i.e., these zones can occur individually o r in combinations. When three zones occur together in a compounding form, the in tegrated vertical zoning of the structures is formed. The mineralization charact eristics are always determined by the vertical orefield structural zoning, which seems to be the main cause responsible for the metallogenic series and multisto ry metallogeny. |
| keywords:geology, orefield structure, vertical zoning, zonal model, Tongling ore concentration area |
| View Full Text View/Add Comment Download reader |
|
|
|
