华北地质2023，Vol.46Issue(4)：1-9,9.DOI:10.19948/j.12-1471/P.2023.04.01
河北怀安地区花岗闪长质片麻岩地球化学特征及年代学研究
Zirconage and geochemistry of granodioritic gneissin in Huai'an,Hebei province
摘要
Abstract
The northern and southern margin of the north China continent are widely distributed in the early Cambrian TTG system,which is the oldest known in the world.The geochemical characteristics of the early Cambrian rocks are quite different from the origins and Genesis.Therefore,it is of great significance to study the geochemical analysis Geochemical analysis and geochronology of granodioritic gneiss in Huai'an area,Hebei Province,and evolution,hyperplasia as well as reforger in the north China.The results show the LA-ICP-MS zircon U-Pb isotope concordia diagram age is 2 551 Ma,indicated granodiorite rock body was formed in Early Paleoproterozoic Era.Granite.The intrusion is dominated by medium grained hypersthenes Granodioritic gneiss.Their SiO2and total alkaline contents are in the ranges of 67.30％～74.94％(average 70.94％)and 5.57％～8.01％(average 6.37％),respectively.Most of rocks belong to peraluminous(average A/CNK=1.53)granite and generated in syncollisional setting.This intrusion is formed in a magmatic arc tectonic environment.关键词
TTG岩系/怀安/花岗闪长质片麻岩/岩石学/地球化学/年代学Key words
TTG rock series/Huai'an,Granodioritic gneiss/petrology/geochemistry/chronology分类
天文与地球科学引用本文复制引用
韩明洋,曹斌华,张乐冲,马伟,李亚超..河北怀安地区花岗闪长质片麻岩地球化学特征及年代学研究[J].华北地质,2023,46(4):1-9,9.基金项目
中国地质调查局项目"西北沿边及特殊地区地质矿产调查(DD20160079)" （DD20160079）
"河北1/5万西洋河、套里庄、鹿尾沟、怀安县、水闸屯幅区域地质矿产调查(12120114008801)" （12120114008801）
