同位成矿作用的概念、类型与机制

来源期刊：中国有色金属学报1998年第4期

论文作者：汪东波 梅友松 刘国平

文章页码：700 - 704

关键词：同位成矿作用； 铜多金属矿床； 地幔喷流柱； 成矿机制

Key words：isospatial metallogenesis; copper-polymetallic deposit; mantle plume; metallogenetic mechanism

摘    要：同位成矿作用系指在同一成矿空间内，循时间序列，伴随地质演化的进程， 某种元素、 元素组合的多期富集成矿、 叠加和定位作用过程的总称。 以铜多金属矿床为例，初步厘定了同位成矿作用的类型(异时单期同位成矿、异时多期同位成矿、 同时多型同位成矿)、 剖析了同位成矿作用的边界条件(丰富的成矿物质和成矿流体、 稳定且长期活动的热中心及迁移通道、 优化的成矿系统结构和局部适宜的沉积环境)，并从理论上阐述了同位成矿作用与区域地幔成分的不均一性、地幔喷流柱的关系和同位成矿作用的机制。

Abstract: The isospatial metallogenesis is a special term concerning the processes of multi-periodic mineralization, superposition and localization of an element or element association in the same metallogenetic domain and along the temporal sequence. Taking copper-polymetallic deposits as example, the isospatial metallogenesis can be divided preliminarily into three types: (1) heterochronous monoperiodic isospatial metallogenesis; (2) heterochronous multiperiodic isospatial metallogenesis; (3) synchronous multitype isospatial metallogenesis. The boundary conditions of isospatial metallogenesis are: (1) abundant sources of ore-forming material and ore-forming fluids; (2) stable and long actively thermal center; (3 ) the structure connecting the ore-forming material source and the active thermal c enter; (4) locally suitable deposition environment. The mechanism and relation of the isospatial metallogenesis to "mantle plume" were discussed either in the paper.