摘要
南岭泥盆系中的层控铅锌、黄铁矿矿床,在空间上受层位、岩相和构造位置的控制。不同矿床之间在矿体形态产状、矿石的物质组分、结构构造、微量元素、同位素组成和包裹体特征方面,具有系列演化特点。据此可以将这些矿床分为成岩、成岩-后生、热液叠加和混合热液等四种成因类型。它们是在控制因素相近,成矿物质来源、迁移和就位机制既有联系又逐渐演化的条件下形成的,属于同一矿床成因系列。
There occur lots of stratabound lead-zinc and pyrite ore deposits in Devonian strata of Nanling region. No matter whether intrusive bodies are existent or not within them, these deposits are controlled spatially by similar stratigraphic horizons, lithofacies, and tectonic positions and show both distinction and connection in such aspects as forms and modes of occurrence of orebodies, ore composition, textures and structures, minor elements, S,Pb, O, C, H isotope composition and inclusion components which all reflect genetic characteristics of these deposits, suggesting an obvious sequential evolution relationship. These charactersitics fully demonstrate their differences in sources of metallogenic materials and solutions, ore-forming styles and metallogenic epochs. In view of the fact that ores and wall rocks have the same genesis, the author, based on the relation between the evolutionary stages of the basin and the metallogenic processes as well as on the above characteristics, has grouped these deposits into four genetic types, namely diagenetic, diagenetic-epigenetic superimposed and mixed hydrotherma! ore deposits. They are transitional ore deposit types connected to and progressively evolved into each other between the two end members of sedimentary deposits and magmatic hydrothermal deposits, and were formed under the condition of identical controlling factors and similar ore-forming material sources, migration and emplacement mechanism, thus belonging to the same genetic series, i. e., genetic series of stratabound ore deposits.
出处
《矿床地质》
CAS
CSCD
北大核心
1989年第1期39-50,共12页
Mineral Deposits
