Mesozoic multi-direction collision tectonic evolution of the Ordos Basin, China: Insights from the detrital zircon and apatite (U-Th)/He analyses  

作　　者：Yin Chen Jian-guo Li Lu-lu Chen Hua-lei Zhao 

机构地区：[1]Tianjin Center of China Geological Survey,Tianjin 300170,China [2]Key Laboratory of Uranium Geology,China Geological Survey,Tianjin 300170,China [3]Cores and Samples Center of Natural Resources,China Geological Survey,Langfang 065201,China [4]Key Laboratory of Tectonics and Petroleum Resources,China University of Geosciences(Wuhan),Wuhan 430074,China

出　　处：《China Geology》2025年第1期141-158,共18页中国地质(英文)

基　　金：This study was jointly supported by the Science&Technology Fundamental Resources Investigation Program(2022FY101800);National Science Foundation(92162212);the project from the Key Laboratory of Tectonics and Petroleum Resources(China University of Geosciences,Wuhan)(TPR-2022-22);the International Geoscience Programme(IGCP-675)。

摘　　要：The Ordos Basin(OB)in the western part of the North China Craton(NCC),was located at the jointed area of multi-plates and has recorded the Mesozoic tectonic characteristics.Its tectonic evolution in the Mesozoic is significant to understand the tectonic transformation of the northern margin of the NCC.In this work,the detrital zircon and apatite(U-Th)/He chronological system were analyzed in the northern part of the OB,and have provided new evidence for the regional tectonic evolution.The(U-Th)/He chronological data states the weighted ages of 240‒235 Ma,141 Ma with the peak distribution of 244 Ma,219 Ma,173 Ma,147‒132 Ma.The thermal evolution,geochronological data,and regional unconformities have proved four stages of regional tectonic evolution for the OB and its surroundings in the Mesozoic:(1)The Late Permian-Early Triassic;(2)the Late Triassic-Early Jurassic;(3)the Late Jurassic-Early Cretaceous;(4)the Late Cretaceous-Early Paleogene.It is indicated that the multi-directional convergence from the surrounding tectonic units has controlled the Mesozoic tectonic evolution of the OB.Four-stage tectonic evolution reflected the activation or end of different plate movements and provided new time constraints for the regional tectonic evolution of the NCC in the Mesozoic.

关 键 词：Zircon and Apatite(U-Th)/He Tectonic evolution Geochronology Four stages of regional tectonic Ordos Basin Oil-gas-bearing basin Multi-direction collision Oil-gas exploration engineering MESOZOIC North China Craton 

分 类 号：P618.13[天文地球—矿床学] P534.5[天文地球—地质学]