(北京礦產(chǎn)地質(zhì)研究所， 北京 100012)
摘 要: 同位成礦作用系指在同一成礦空間內(nèi)，循時(shí)間序列，伴隨地質(zhì)演化的進(jìn)程， 某種元素、 元素組合的多期富集成礦、 疊加和定位作用過程的總稱。 以銅多金屬礦床為例，初步厘定了同位成礦作用的類型(異時(shí)單期同位成礦、異時(shí)多期同位成礦、 同時(shí)多型同位成礦)、 剖析了同位成礦作用的邊界條件(豐富的成礦物質(zhì)和成礦流體、 穩(wěn)定且長(zhǎng)期活動(dòng)的熱中心及遷移通道、 優(yōu)化的成礦系統(tǒng)結(jié)構(gòu)和局部適宜的沉積環(huán)境)，并從理論上闡述了同位成礦作用與區(qū)域地幔成分的不均一性、地幔噴流柱的關(guān)系和同位成礦作用的機(jī)制。
關(guān)鍵字: 同位成礦作用 銅多金屬礦床 地幔噴流柱 成礦機(jī)制
（Beijing Institute of Geology for Mineral Resources, Beijing 100012, P. R. China）
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.
Key words: isospatial metallogenesis copper-polymetallic deposit mantle plume
metallogenetic mechanism
