地质与资源2025，Vol.34Issue(4)：432-441,431,11.DOI:10.13686/j.cnki.dzyzy.2025.04.005
太行山北段赤瓦屋铜钼钨矿岩石地球化学、Sr-Nd-Pb同位素特征及地质意义
The Chiwawu copper-molybdenum-tungsten deposit in northern Taihang Mountains:Petrogeochemistry,Sr-Nd-Pb isotopic characteristics and geological implication
摘要
Abstract
The Chiwawu Cu-Mo-W deposit,occurred in the central facies porphyritic granodiorite of Chiwawu rock mass,is a typical porphyry deposit in northern Taihang Mountains,belonging to the high-K calc-alkaline series.With the decrease of σ value,the content of SiO2 increases.The oxides such as CaO,MgO,Fe2O3,TiO2,and P2O5 are negatively correlated with the SiO2 content,showing the characteristics of quasi-aluminous calc-alkaline Ⅰ-type granite.Elements of Rb,Ba,Th,U,La,and Nb are relatively depleted,with a slightly positive Eu anomaly.The 87Sr/86Sr ratio of Chiwawu rock mass is averagely 0.7068,with the initial ratioεNd(t)of-20.9 to-16.1,the 206Pb/204Pb ratio of 16.5,the 207Pb/204Pb ratio of 15.2 and the 208Pb/204Pb ratio of 36.8,indicating that the magma is primarily derived from the lower crust mixed with minor mantle materials.Combined with the regional geological background,it is concluded that under the influence of subduction of Paleo-Pacific Plate,the large-scale remelting of lower crust and upper mantle materials occur in North China Craton,leading to the upward invasion along the deep fault zone of Taihang Mountains,eventually forming the Chiwawu Cu-Mo-W deposit.The Chiwawu rock mass and magmatic rock belt in northern Taihang Mountains are promising targets for future mineral exploration.关键词
铜钼钨矿床/主、微量元素/Sr-Nd-Pb同位素/赤瓦屋岩体/太行山Key words
Cu-Mo-W deposit/major and trace element/Sr-Nd-Pb isotope/Chiwawu intrusive rock/Taihang Mountains分类
天文与地球科学引用本文复制引用
梁婵,安跃辉,穆海凤,康志娟,丁宁宁,丁照月..太行山北段赤瓦屋铜钼钨矿岩石地球化学、Sr-Nd-Pb同位素特征及地质意义[J].地质与资源,2025,34(4):432-441,431,11.基金项目
河北省斑岩型矿床研究重点实验室专项资金资助项目"地球化学方法对地质找矿信息的提取"(冀科平函[2023]38号) （冀科平函[2023]38号）
河北省地质矿产勘查开发局项目"王安镇岩体北缘找矿方向研究"(454-0601-YBN-JNDX) （454-0601-YBN-JNDX）
河北省地质矿产勘查开发局项目"河北省阜平县赤瓦屋铜多金属矿普查续作"(454-0502-YBN-5AFX). （454-0502-YBN-5AFX）
