| 铜陵狮子山矿田多位一体(多层楼)模式 |
| 点此下载全文 |
| 引用本文：.1993.Multistory metallogenic model of the Shizishan orefield in Tongling, Anhui Province[J].Mineral Deposits,12(3):221~230,252 |
| Hits: 3638 |
| Download times: 1671 |
|
| 基金项目:国家“七五”重点攻关项目75-55-02-03 |
|
| 中文摘要:在分析区域成矿地质背景、控矿因素、矿化特征的基础上，建立了该矿田的多位一体(多层楼)成矿模式，印由热液脉型、矽卡岩型、层控矽卡岩型及斑岩型矿床有机配置，形成多位一体阳“床，空间上表现为“多层楼”形式。 |
| 中文关键词:狮子山矿田 控矿因素 矿化特征 成矿模式 |
| |
| Multistory metallogenic model of the Shizishan orefield in Tongling, Anhui Province |
|
|
| Abstract:More than ten ore deposits have been discovered in the Shizishan orefield, a major orefield in the iron-copper-sulfur-gold metallogenic belt of Middle and Lower Yangtze Valley. The orefield experienced a three-stage process of basement formation, stable cover deposition and intraplate deformation, i.e., it underwent very long tectonic evolution of active→stable→actiVe, thus forming a complex geological setting. The ore-forming process resulted from the superimposition of Yanshanian magmatic activity on the Paleozoic-Early and Middle Triassic sedimentary formation and was conditioned by varied factors: proto reformed by the originally-deposited kappa-pyrite bed; the litheology favorable for metasomatic mineralization and the host bed and cover bedformed by favorable lithologic association; ore-forming materials and ore-bearing hotfluids provided by Yanshanian intermediateacid magma; well-developed wall rock alterations, consisting mainly of skarnization, potash alteration, silicification, chloritization, epidotization and sericitization; ore-forming fluids dominated by magmatic water at the early stage with the addition of formation water at the late stage; the superimposition of different types of structures that connected the magmatic source and provided favorable space for passage of ore fluids, and hosting of orebodies. The ore-forming process shows both endogenic and exogenic characteristics with a variety of mineralization types such as hydrothermal type, skarn type, stratabound skarn type and potphyry type, characterized by a distinct”vein-pipe-strata-porphyry” mineralization series with stratiform mineralization being most important. In section, this mineralization series exhibits a multistory form. Such a “a whole orebody composed of multilayered ores” type is to some extent typical in Tongling area and even in the whole Middle and Lower Yangtze Valley, thus having some guiding significance in ore-prospecting work of that region. |
| View Full Text View/Add Comment Download reader |
|
|
|
