摘要
文中回顾了对C型埃达克岩认识的过程,归纳了C型埃达克岩的产出特征、存在问题、研究意义及今后研究的方向,指出中国东部C型埃达克岩是高钾钙碱性的,可能是变质的中钾和高钾的中基性岩在高压条件下部分熔融形成的。不同于O型埃达克岩,它的成因、源区特征、熔融机制,是今后研究的重点,需要大量实验研究的支持。钾质的C型埃达克岩是新的大陆构造学研究的切入点,比钠质的O型埃达克岩具有更重要的意义。
A comprehensive summary of the definition, mode of occurrence and remaining problems in the stud- ies of C-type adakitic rocks is given in this paper for better understanding the implications of C-type adakite rocks in East China. It is pointed out that C-type adakitic rocks are high-K calc-alkaline and are likely derived from partial melting of intermediate- to high-K meta-andesitic-basaltic rocks under the high pressure condition. Un- like things of O-type adakite, the origin, source rocks and partial melting processes of C-type adakite remain un- clear and hence more experimental work may have to be involved in future work.
出处
《岩石矿物学杂志》
CAS
CSCD
北大核心
2011年第4期739-747,共9页
Acta Petrologica et Mineralogica
基金
国家自然科学基金重大研究计划资助项目(91014001
90714011
90714007)
中国科学院地质与地球物理研究所岩石圈演化国家重点实验室自主研究课题资助项目(专0904)