| 新疆阿尔泰南缘加尔巴斯套铁矿床成矿时代及成矿作用研究 |
| Received:January 04, 2012 Revised:November 01, 2012 点此下载全文 |
| 引用本文：LIU Feng,ZHANG Chao,YANG FuQuan.2012.A study of chronology and ore-forming process of Jialbasto iron deposit on southern margin of Altay[J].Mineral Deposits,31(6):1277~1288 |
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| Author Name | Affiliation | | LIU Feng | MRL Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China | | ZHANG Chao | No.719 Geological Party of Bureau of Geological Exploration of Guangdong Province, Zhaoqing 526020, Guangdong, China | | YANG FuQuan | MRL Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China |
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| 基金项目:本文得到国土资源部公益性行业专项资金课题(编号: 200911007-10)和"十二五"国家"305"科技支撑项目专题(编号: 2011BAB06B03-02)联合资助 |
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| 中文摘要:加尔巴斯套铁矿床位于阿尔泰南缘克兰火山沉积盆地中。该矿床与产于额尔齐斯构造带北侧的可斯尔鬼花岗岩有直接的成因关系,属于典型的矽卡岩型富铁矿。岩体SHRIMP U-Pb年龄表明,该矿床略晚于287 Ma形成;流体包裹体和稳定同位素研究显示,成矿阶段流体除岩浆水外,还有较多大气降水的参与,成矿流体主要表现为中低温、低盐度、中低密度特征;成矿物质主要来源于走滑-伸展背景下的可斯尔鬼花岗岩。结合前人研究成果,笔者认为在晚石炭世—早二叠世时期,阿尔泰南缘由走滑-伸展引发的大规模岩浆作用造就了区内有关铜、锌、镍、金、铁等广泛的成矿作用。 |
| 中文关键词:地球化学 矽卡岩铁矿 花岗岩 走滑-伸展 阿尔泰南缘 |
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| A study of chronology and ore-forming process of Jialbasto iron deposit on southern margin of Altay |
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| Abstract:The Jialbasto iron deposit is situated in Kelan volcanic basin on the southern margin of Altay. The iron deposit is directly related to Kslgui granite and is a typical skarn rich iron deposit. The SHRIMP U-Pb age of the pluton indicates the iron deposit was formed somewhat later than 287 Ma. Studies of fluid inclusions and stable isotopes show that the ore-forming fluids were middle-low temperature, low salinity and middle-low density fluids due to the addition of relatively abundant meteoric water besides magmatic water in the ore-forming period, and that the metallogenic material resulted probably from Kslgui granite in an extension-strike-slip setting. In combination with previous data, the authors have reached the conclusion that, during late Carboniferous-early Permian, extensive magmatism triggered by the crustal extension-strike-slip on the southern margin of Altay resulted in extensive metallogeny of Cu, Zn, Ni, Au and Fe. |
| keywords:geochemistry skarn iron deposit granite extension-strike-slip southern margin of Altay |
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