许军，付强，杨文涛. 华北盆地晚古生代碎屑锆石U-Pb年龄特征及其对周缘造山带的响应[J].河南理工大学学报(自然科学版), doi: 10.16186/j.cnki.1673-9787.2023120049.

XU J，FU Q，YANG W T. Detrital zircon U-Pb age signatures and response to surrounding orogens of the North China Basin in the Late Paleozoic [J]. Journal of Henan Polytechnic University (Natural Science), doi: 10.16186/j.cnki.1673-9787.2023120049.

华北盆地晚古生代碎屑锆石U-Pb年龄特征及其对周缘造山带的响应(网络首发)

许军 ¹，付强 ²，杨文涛 ²

（1.河南省地质研究院，河南 郑州 450016；2.河南理工大学 资源环境学院，河南 焦作 454000）

摘要: 华北克拉通形成与后期破坏过程是目前地球动力学研究热点。华北克拉通华前寒武纪和中生代时期构造背景研究已较广泛，但古生代时期构造背景研究较薄弱，目的 为了探讨晚古生代华北盆地与周缘造山带盆山系统演化过程，方法 本文收集了华北盆地晚古生代碎屑锆石U-Pb年龄数据，通过开展大规模的数据整理与统计并与周缘造山带演化相结合。结果 结果表明，华北盆地晚石炭世本溪组地层碎屑锆石年龄主要峰值为310，440 Ma；早二叠世太原组—上石盒子组碎屑锆石年龄有5个主要峰值，分别为310，300，440，~1 850，~2 500 Ma；晚二叠世石千峰组碎屑锆石年龄有5个主要峰值，分别为260，310，440，~1 850，~2 500 Ma。结论 晚石炭世，华北盆地内部沉积物主要来自秦岭造山带，来自内蒙古隆起的沉积物主要分布在华北盆地北缘；早二叠世末期，来自内蒙古隆起的沉积物进积到华北盆地南部边缘，实现了“南高北低”到“北高南低”的构造转换；晚二叠世，秦岭造山带再次向华北盆地内部提供沉积物，指示了盆地南部隆升。物源区的演变指示了华北北缘兴蒙造山带持续增强的造山作用以及华北南缘秦岭造山带内部勉略洋盆伸展—俯冲造山的构造转换。

关键词: 华北盆地；晚古生代；碎屑锆石；U-Pb定年

中图分类号：P597　　

doi: 10.16186/j.cnki.1673-9787.2023120049.

基金项目: 国家自然科学基金资助项目（42072123）；河南省优青科学基金项目（222300420046）

收稿日期：2023-12-18

修回日期：2024-04-08

网络首发日期：2024-11-11

Detrital zircon U-Pb age signatures and response to surrounding orogens of the North China Basin in the Late Paleozoic (Online)

XU Jun¹，FU Qiang²，YANG Wentao²

（1. Henan Academy of Geology, Zhengzhou 450016, Henan, China；2. School of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, Henan, China）

Abstract: The formation and destruction of the North China Craton has always been a hotspot in global geology research, the tectonic setting has been widely study in the Precambrian and Mesozoic, but the Paleozoic has still relatively poor. Objectives In order to discusses the evolutionary process of basin-orogeny systems in the North China Basin and surrounding orogens in the Late Paleozoic. Methods This paper collected the published U-Pb age data of the Late Paleozoic detrital zircons in the North China Basin, by conducting large-scale data collation and statistics, and combined with the evolution process of surrounding orogenic belts. Results The detrital zircon from the Benxi Formation of the North China Basin in the Late Carboniferous had two major age group peaks at 310 Ma, 440 Ma. The detrital zircon from the Taiyuan Formation-Upper Shihezi Formation of the Early Permian had five major age group peaks at 310 Ma, 300 Ma, 440 Ma, ~1850 Ma, ~2500 Ma. The detrital zircon from the Shiqianfeng Formation of the Early Permian had five major age group peaks at 260 Ma, 310 Ma, 440 Ma, ~1850 Ma, ~2500 Ma. Conclusions In the Late Carboniferous, the main provenance of the North China Basin is thought to be the Qinling Orogenic Belt. In the late Early Permain, The sediments from Inner Mongolia uplift are distributed in the northern margin of the North China Basin; the sediments of the Inner Mongolia uplift prograde to the southern of the North China Basin, the tectonic pattern had been transformed from high in the south to high in the north in this time. Qinling Orogenic Belt provide sediments to North China Basin again in the Late Permain, indicate the uplift of the southern of the basin. The evolution of the provenance indicates the continuously enhanced orogenic movement of Xingmeng Orogenic Belt of the northern of North China and the tectonic transformation of extension-subduction of the Mianlue Ocean in Qinling Orogenic Belt of the southern of the North China.

Key words：North China Basin; Late Paleozoic; detrital zircon; U-Pb dating

CLC: P597