| 潘泽伟,赵波,余海军,柏杨,明添学,朱悦彰.滇中鹅头厂铁矿床含矿岩系及成矿作用年代学研究[J].矿产勘查,2017,8(4):626-630 |
| 滇中鹅头厂铁矿床含矿岩系及成矿作用年代学研究 |
| Study on the ore-forming formation and chronology of Etouchang iron deposit in central Yunnan |
| 投稿时间：2016-07-08 |
| DOI： |
| 中文关键词: 鹅头厂铁矿 含矿岩系 Sm-Nd同位素年龄 成矿时代 |
| 英文关键词: ore-bearing formations, Sm-Nd isotope age, metallogenic epoch, Etouchang iron deposit, Yunnan |
| 基金项目:国家自然科学基金重点项目(编号:U1133602)、西南地区层控多金属矿床成矿规律总结研究专题调研(编号:20089943)和中国地质调查局地质调查工作项目(编号:12120113094600)联合资助。 |
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| 摘要点击次数: 1930 |
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| 中文摘要: |
| 鹅头厂铁矿床是滇中元古宙铜铁矿床的典型代表,产于一套深色基性变质岩系中,以前对含矿岩系时代及成矿作用的认识一直有分歧,成矿年龄缺少年代学研究支持。文章通过采集矿区典型样品进行Sm-Nd同位素年龄测定,对含矿岩系年代学进行了研究。通过实验测得(1448±5)Ma及(1031±17)Ma两组Sm-Nd等时线年龄,其中(1448±5)Ma与中元古界因民组沉积成矿作用期对应,(1031±17)Ma年龄值与晋宁期热液成矿作用期吻合。鹅头厂铁矿床系沉积—热液叠加的复成因铁矿床。 |
| 英文摘要: |
| The Etouchang iron deposit, a typical Proterozoic Cu-Fe deposit in central Yunnan, occurred in a suite of dark metamorphic basic rocks.Due to lacking of chronological study in the deposit area, thus there has been controversial argument about the age of ore-bearing formation and metallogenic process. The chronology of ore-bearing rock has been conducted by collecting Sm-Nd isotopic dating of typical samples in the deposit area. The measured Sm-Nd isochronological age is (1448±5)Ma and (1031±17)Ma, of which (1448±5)Ma corresponds to the Mesoproterozoic Yinmin formation sedimentary mineralization, and the age of (1031±17)Ma coincides with the Jining hydrothermal mineralization epoch. Therefore, the Etouchang iron deposit is a sedimentary - hydrothermal superimposed complex iron deposit. |
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