太原理工大学学报2024，Vol.55Issue(2)：296-305,10.DOI:10.16355/j.tyut.1007-9432.20230507
五台滹沱群建安村组地质时代界定及其意义
Geochronology Definition of Jian'ancun Formation in Wutai Hutuo Group and Its Implications
摘要
Abstract
[Purposes]The Hutuo Group belongs to the Early Proterozoic strata.As one of the most typical Paleoproterozoic strata in North China,the timing redefinition of the Hutuo Group is of great significance to the establishment of the early Precambrian stratigraphic chronology framework,the discussion of the early Precambrian geological evolution process in North China and the study of plate assembly.[Methods]This article conducts a detailed study of the Dongye Subgroup strata of the Hutuo Group,collecting 24 detrital zircon samples from the Jian'ancun Formation of the Hutuo Group.From 23 similar age detrital zircons,we define the weighted average age of the bottom bound-ary of the Hutuo Group is 2 469 Ma,and regional tectonic movements occurred in the Wutai area around 1 855 Ma.According to the 1 109 zircon ages in Hutuo Group from previous studies,we consid-ered that the ages of>2.5 Ga are from underlying Gaofan subgroup and the maximum depositional age of Hutuo Group was early Paleoproterozoic.[Findings]The results show that the crust of the Wutai ar-ea was unstable at 2 376,2 170,2 066,1 988,and 1 825 Ma,resulting in multiple magmatic events.The 1 825 Ma zircon age can further indicate the occurrence of the Lyuliang movement,and provide a basis for the early Proterozoic North China Craton integration.关键词
五台山/滹沱群/建安村组/锆石U-Pb测年/古元古代早期Key words
wutai mountain/Jian'ancun formation/zircon U-Pb dating/Hutuo group/early paleoproterozoic分类
信息技术与安全科学引用本文复制引用
李超,雷勇,韩伟,冯志强,李建荣,闫涛,唐臣燕,崔杰..五台滹沱群建安村组地质时代界定及其意义[J].太原理工大学学报,2024,55(2):296-305,10.基金项目
山西省自然科学基金项目(2019L0126,2019L0054) （2019L0126,2019L0054）
山西省基础研究计划资助项目(20210302123378) （20210302123378）
山西省优秀博士来晋工作奖励基金项目(SXYBKY2019032) （SXYBKY2019032）
山西农业大学科技创新基金项目(2020BQ47) （2020BQ47）
