西昆仑乔尔天山一带铅锌矿床成矿模型及控矿要素
Metallogenic model and ore-controlling factors of lead-zinc deposits in the Qiao'er-Tianshan area of western Kunlun Mountains
蒋国鹏 1李昊 2田勇 1张磊1
作者信息
- 1. 新疆维吾尔自治区地质矿产勘查开发局第八地质大队,新疆 阿克苏 843000
- 2. 中国科学院地质与地球物理研究所,北京 100029
- 折叠
摘要
近年来,在西昆仑乔尔天山一带发现了一批以火烧云铅锌矿床为首的超大型及大中型铅锌矿床,通过研究典型矿床的时空分布与形成机制,认为西昆仑乔尔天山一带中生代盆地铅锌矿床从成因方面可分为沉积-交代型、MVT型及岩浆热液型3种.通过Pb、S同位素分析,初步认为研究区铅锌硫化物具有深源特征,后期生物有机硫部分参与了成矿作用;通过C、O同位素分析,认为成矿热液属于原生成因.在总结成矿物质来源、控矿要素的基础上建立了区域成矿模型,认为沉积相与同生断层是沉积-交代型矿床的主要控矿要素,断裂构造是MVT型矿床的主要控矿要素,岩浆侵入与热液接触交代是岩浆热液型矿床的主要控矿要素.
Abstract
In recent years,a group of super large,large and medium lead-zinc deposits,led by Huoshaoyun Pb-Zn deposit,have been discovered in the Qiao'er-Tianshan area of western Kunlun Mountains.Through the study of the spatiotemporal distribution and formation mechanism of typical deposits,it is believed that the Mesozoic basin lead-zinc deposits in the Qiao'er-Tianshan area of west-ern Kunlun Mountians can be divided into three types in terms of genesis:sedimentary metasomatic type,MVT type,and magmatic hy-drothermal type.Pb and S isotope analysis shows that the lead-zinc sulfide in this area is featured with deep source,and the biological organic sulfur partly participated in the late mineralization.C and O isotope analysis reveals that the ore-forming hydrothermal solution belongs to the primary origin.A regional mineralization model was establised by summarizing the sources of ore-forming materials and ore-controlling elements.Sedimentary facies and contemporaneous faults are the main ore-controlling elements of sedimentary meta-somatic deposits,fault structures are the main ore-controlling elements of MVT type deposits,and magma intrusion and hydrothermal contact metasomatism are the main ore-controlling elements of magmatic hydrothermal deposits.
关键词
矿床类型/成矿模型/控矿要素/铅锌矿/西昆仑乔尔天山Key words
deposit type/metallogenic model/ore-controlling element/lead-zinc deposit/Qiao'er-Tianshan in western Kunlun Mountains引用本文复制引用
基金项目
中央返还新疆两权价款资金科研项目(Y15-1-LQ07)
出版年
2024
NETL
NSTL
万方数据