摘要
本文评述了花岗质岩石的起源、演化及成岩后的各种地质地球化学作用对其轻稀土和重稀土元素分馏的影响，说明了稀土元素分馏和富集的一般趋势及目前常用的研究花岗质岩石成因的地球化学模型的局限性，分析评估了花岗质岩石成因、演化与内生及地表次生富集作用形成稀土矿床的制约因素。
This contribution evaluates the effects of various geological-geochemical processes on the fractionation between light and heavy rare earth elements (REE) during the origin and evolution of ganitoids and their post-solidification.The general trends of REE fractionation and enrichment for granite evolution are discussed,which show that there is some limitation to the current geochemical modelling for petrogenesis of granites.The paper analyses the controlling factors for relationships among the petrogenesis and evolution of granites and the endogenic mineralization of REE to their secondary enrichment in the weathering crust of the granitic plutons in details.
出处
《安徽地质》
1998年第2期1-7,共7页
Geology of Anhui
基金
国家自然科学基金
关键词
花岗质岩石
成岩机理
稀土元素分馏
稀土元素成矿作用
granitoid,petrogenetic mechanism,fractionation of rare earth elements,REE mineralization
