榴辉岩相的重新评价  

A RE-EVALUATION OF THE ECLPHOYR FACIES

作　　者：刘晓春[1] 胡克[1] 

机构地区：[1]中国科学院地球化学研究所矿床地球化学实验室,长春地质学院地质系

出　　处：《地质科技情报》1994年第1期29-35,共7页Geological Science and Technology Information

摘　　要：给出了超基性、基性、泥质、长英质、硅质和碳酸盐等不同系列岩石榴辉岩相的典型矿物组合，重新确认了榴辉岩相的存在。榴辉岩相的ｐ－Ｔ区间大致为１．０～４．０ＧＰａ和４００～９００℃，可进一步划分出低温、中温、高温和超高压等４个亚相。除少数地区蓝片岩相在空间上可直接过渡为低温榴辉岩亚相外，榴辉岩相与其它变质相不构成相系，它们之间属相变关系。最后对榴辉岩相的复杂性进行了讨论。The typical mineral assemblages of the eclogite facies in rock serieses such as ultrabasic, basic, pelitic, felsic, quartzose and carbonate rocks are given in this paper, and the concept of the eclogite fades is reaffirmed.The p-T range of the eclogite facies is about 400- 900℃, 1. 0-4. 0GPa and can be divided into low temperature, medium temperature, hightemperature and ultra-high pressure subfacieses.Except that the blueschist facies could directly transit to the low temperature ecloglte subfacies in space in a few areas,the eclogite facies did not constitute fades series with other metamorphic facies.The relation between them belongs to fades change.The complexity of the eclogite fades is discussed in the last part of the paper.

关 键 词：榴辉岩 岩相 亚相 相变 

分 类 号：P588.3[天文地球—岩石学]