江绍断裂带中闪长岩类的糜棱岩化作用

被引:7
作者
朱云鹤
周新民
机构
[1] 南京地质矿产研究所
[2] 南京大学地球科学系
关键词
江绍断裂带; 闪长岩类; 糜棱岩化;
D O I
暂无
中图分类号
P588.3 [变质岩];
学科分类号
070901 ;
摘要
本文研究了浙江江绍断裂带中段诸暨县璜山至王家宅一带片理发育的闪长质岩石.据递增的韧性变形特征和残存的火成岩组构,笔者确认上述岩石是闪长岩类经动力改造后的糜棱岩.并论证了相应的糜棱岩化作用发生在353~370Ma前.温压条件为425~475℃和3.8~46×10~8Pa.其岩相学、矿物学的研究表明,在此糜棱岩化过程中.变形作用通过提高变质反应速率、引入流体相以及增强化学势与组份扩散等,促成了闪长质糜棱岩类的低绿片岩相变质作用。
引用
收藏
页码:23 / 34
页数:12
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