太行山南段石槽铜矿年代学研究及成因初探

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1.The9th Geological Brigade of Geological Exploration Bureau of Hebei Province， Xingtai O54000，China；2.Hebei

GEO Unviersity，Shijiazhuang ，China

Abstract：Thispaperpreliminarilyexploresthemetalogenicepochand genesisofthedepositthroughthestudyof zirconU-Pb geochronology，Hfisotopes，andrareearth elements（REEs）inthecopper-bearingquartzveinsoftheShicaocopperdeposit， southern of Taihang Mountains.The research shows that the weighted mean age of 818±24 Ma for zircon U-Pb represents the crystallizationage ofhydrothermal zircon in copper-bearing quartzveins.The εHf（t） values of Hf isotopes range from -0.9 to -5.4， with TDM2 values between 2.Oand 2.4Ga，average2.2 Ga.In the Hf isotopic diagram，four data points fall between the 1.8Gaand2.5Gaaveragecrustalevolution lines，indicating theaverageretentionageofthesourcematerialsinthecrust. Combiningregionalgeology，mininggeologyandexperimentalzirconcharacteristics，thispapersuggsts tatthemetalogenicageof theShicaocopperdepositbelongstotheNeoproterozoicera.Itisspeculatedthatcopper-bearingmagmaticactivityand mineralization processes may have occurred during the "Jixian uplift"phase of the Qingbaikouan Period.

Keywords：southernof Taihang Mountains；Shicao copperdeposit；copper-bearingquartz veins；U-Pbgeochronology;Hf isotope

来稿日期：2025-03-19 DOI：10.13937/j. cnki.hbdzdxxb.2025.04.001

基金项目：河北省自然资源厅地勘专项资金项目（13000023P00F2D410254C）

作者简介：刘延凯（1985一），男，河北沙河人，高级工程师，主要从事矿产勘查和找矿预测研究。（剩余11715字）