蔡厚安.新疆库车盆地康村地区砂岩型铜矿物源分析:LA-ICP-MS锆石U-Pb年代学证据[J].矿产勘查,2023,14(11):2032-2038 |
新疆库车盆地康村地区砂岩型铜矿物源分析:LA-ICP-MS锆石U-Pb年代学证据 |
Provenance analysis of sandstone type copper deposits in Kangcun area, Kuqa Basin, Xinjiang, China: LA-ICP-MS zircon U-Pb dating |
投稿时间:2022-03-12 修订日期:2023-05-22 |
DOI:10.20008/j.kckc.202311002 |
中文关键词: 新疆 库车盆地 砂岩型铜矿 LA-ICP-MS |
英文关键词: Xinjiang Kuqa Basin sandstone-type copper deposit LA-ICP-MS |
基金项目:本文受中国地质调查局项目“西南天山成矿带霍什布拉克—乌拉根地质矿产调查”(DD20160001)资助。 |
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中文摘要: |
新疆库车盆地的新生代地层中分布着众多砂岩型铜矿床和矿点,其与源-汇系统关系不清,而物源区是沉积盆地源-汇系统的重要组成部分。本文在野外调查的基础上开展康村地区碎屑岩中碎屑锆石的年代学研究,初步探讨库车盆地源-汇系统中成矿物质来源。结果表明:2件样品LA-ICP-MS测年数据分别为(427.4±6.6)Ma、(387.3±3.3)Ma和(424.6±2.3)Ma、(279.9±6.8)Ma,表明康村地区中新统吉迪克组(N1j)含铜砂砾岩的物源主要来自于库车盆地北西南天山造山带古生代晚志留世至早二叠世地质演化所形成的地层和岩浆岩产物。 |
英文摘要: |
A series of sandstone-type copper deposits and occurrence distribute in the Kuqa Basin, Xinjiang. On the basis of field investigation, this paper carries out the geochronological study of detrital zircon in clastic rocks in Kangcun area, and preliminarily discusses the source of ore-forming materials in the source sink system of Kuqa basin. Detrital zircon dating results of two samples are (427.4±6.6)Ma, (387.3±3.3)Ma and (424.6±2.3)Ma, (279.9±6.8)Ma respectively. It indicates that the source of the copper-bearing sandy conglomerate in the Miocene Jidike Formation (N1j) is mainly from the stratum and magmatic rock products formed by the geological evolution during the Late Silurian to Early Permian. |
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