摘要
红旗营子群及其中的古老岩体共同经历了低角闪岩相的变质作用和近东西向的褶皱变形作用，表１～８给出了石榴石、黑云母、角闪石、斜长石电子探针分析结果及有关参数。６个石榴石－黑云母对测温结果平均为６０９℃，２个角闪石－斜长石对测温结果平均为６１０℃，９个斜长石菱切面角构造变形温度测定结果，平均为６３７℃。由此推测变质与变形是同时的，变形高峰稍早于变质高峰。
Both Hongqiyingzi Group and its old massifs were metamorphosed under lower amphi-bolite facies and underwent folding deformation with east west strike,The chemical results ofgarnet,biotite,hornblende and plagioclase by electron microprobe and their relative parame-ters are given in tables 1-8.Six garnet-biotite pairs give an average metamorphic temperatureat 609℃,Two hornblende-plagioclase have an average temperature at 610℃,The tectono-deformation temperature inferred from rhombic section angle of plagioclase is 637℃(mean of9 determinations).It is suggested that the metamorphism and deformation are synchronous,but the peak of deformation is a little earlier than that of metamorphism.
基金
国家自然科学基金
关键词
红旗营子群
地层
变质岩
变质
变形
温度压力
Hongqiyingzi Group,temperature of metamorphism,tectono-deformationtemperature,lower amphibolite facies
