|
|||||
|
|
| 冀北赤城红旗营子群黑云斜长片麻岩的黑云母~(40)Ar/~(39)Ar年龄及其地质意义 | |
| 引用本文： | 张静,倪志耀,翟明国,杨列坤,卢俊生,孔旭,周新.冀北赤城红旗营子群黑云斜长片麻岩的黑云母~(40)Ar/~(39)Ar年龄及其地质意义[J].成都理工大学学报(自然科学版),2012,39(3):290-295. |
| 作者姓名： | 张静 倪志耀 翟明国 杨列坤 卢俊生 孔旭 周新 |
| 作者单位： | 1. 成都理工大学 地球科学学院,成都,610059 2. 中国科学院地质与地球物理研究所,北京,100029 3. 中国科学院研究生院 地球科学学院,北京,100049 |
| 基金项目： | 国家自然科学基金资助项目 |
| 摘 要： | 探讨冀北赤城红旗营子群是否经历了印支期的构造热事件。通过对冀北赤城红旗营子群黑云斜长片麻岩样品进行的黑云母40 Ar/39 Ar年龄测定,获得其坪年龄和等时线年龄分别为(238.63±1.44)Ma和(238.77±1.71)Ma,两者基本一致。此年龄数据是黑云斜长片麻岩在晚古生代角闪岩相区域变质作用之后所经历印支期构造热事件的记录。综合分析冀北岩浆作用及其地质年代学特征,认为它可能与区域上同时期的酸性岩浆活动有关,是后者为此次构造热事件提供了必要的热源。 |
| 关 键 词： | 黑云母Ar/Ar年龄 印支期 构造热事件 黑云斜长片麻岩 红旗营子群 冀北赤城 |
Biotite 40Ar/39Ar isotopic dating of the biotite plagiogneiss from Hongqiyingzi Group in Chicheng County, North Hebei, China and its geological implication |
|
| ZHANG Jing , NI Zhi-yao , ZHAI Ming-guo , YANG Lie-kun , LU Jun-sheng , KONG Xu , ZHOU Xin.Biotite 40Ar/39Ar isotopic dating of the biotite plagiogneiss from Hongqiyingzi Group in Chicheng County, North Hebei, China and its geological implication[J].Journal of Chengdu University of Technology: Sci & Technol Ed,2012,39(3):290-295. | |
| Authors: | ZHANG Jing NI Zhi-yao ZHAI Ming-guo YANG Lie-kun LU Jun-sheng KONG Xu ZHOU Xin |
| Institution: | 1.College of Earth Sciences,Chengdu University of Technology,Chengdu 610059,China; 2.Institute of Geology and Geophysics,Chinese Academy of Science,Beijing 100029,China; 3.College of Earth Sciences,Graduate University of Chinese Academy of Sciences,Beijing 100049,China |
| Abstract: | This paper discusses whether the Hongqiyingzi Group in Chicheng County of North Hebei underwent the Indosinian tectonothermal event or not.Biotite 40Ar/39Ar isotopic dating of the biotite plagiogneiss sample from Hongqiyingzi Group in Chicheng County of North Hebei yields a well-defined 40Ar/39Ar plateau age of 238.63±1.44 Ma and an isochron age of 238.77±1.71 Ma,respectively.This may be interpreted as the age of the later Indosinian tectonothermal event undergone by the biotite plagiogneiss after the Late Paleozoic regional amphibolite facies metamorphism.On the basis of the magmatic emplacement and its geochronological characteristics within North Hebei,this Indosinian tectonothermal event may be related to the regional acidic magmatic activity contemporaneously,and the latter provided hot sources for the former. |
| Keywords: | biotite 40Ar/39Ar isotopic dating Indosinian tectonothermal event biotite plagiogneiss Hongqiyingzi Group Chicheng County North Hebei |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |