| 津巴布韦太古宙克拉通金矿化年龄综述 |
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| 引用本文： | 李科,王腾,方联华.津巴布韦太古宙克拉通金矿化年龄综述[J].地质找矿论丛,2016,31(4):607-615. |
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| 作者姓名： | 李科 王腾 方联华 |
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| 作者单位： | 四川省鑫冶矿业投资股份有限公司,成都610084;四川省冶金地质勘查局,成都610041 |
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| 摘 要： | 文章通过系统梳理津巴布韦克拉通成矿年代学研究成果,结合野外观测工作、赋矿岩体间接年龄测定以及热液矿物的同位素年龄测定,总结了其区内典型地区如Harare-Shamva绿岩带、Midlands绿岩带、Mutare绿岩带及Limpopo活动带北缘的金矿化时限分布特征,提出主金矿化年龄分布范围为2 660 Ma—2 610 Ma,接近于新太古代地壳块体稳定克拉通化阶段末期,属同构造期或后构造期成矿;另一期矿化作用时限为2 420 Ma—2 380 Ma,与后克拉通化作用中大岩墙的侵位、区域性应力转换拉伸以及再活化作用引起的广泛的岩浆作用有关。两期矿化作用事件可与其它地区典型克拉通相类比。
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| 关 键 词： | 金矿化年龄 太古宙 克拉通 津巴布韦 |
| 收稿时间： | 2015/11/13 0:00:00 |
A Review on the timing of gold mineralization in the Zimbabwe Archaean Craton |
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| LI Ke,WANG Teng and FANG Lianhua.A Review on the timing of gold mineralization in the Zimbabwe Archaean Craton[J].Contributions to Geology and Mineral Resources Research,2016,31(4):607-615. |
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| Authors: | LI Ke WANG Teng and FANG Lianhua |
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| Institution: | Sichuan Xinye Investment Corporation of Mining & Exploration, Chengdu 610084, China;Sichuan Bureau of Metallurgical Geology & Exploration, Chengdu 610041, China;Sichuan Xinye Investment Corporation of Mining & Exploration, Chengdu 610084, China;Sichuan Bureau of Metallurgical Geology & Exploration, Chengdu 610041, China;Sichuan Xinye Investment Corporation of Mining & Exploration, Chengdu 610084, China;Sichuan Bureau of Metallurgical Geology & Exploration, Chengdu 610041, China |
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| Abstract: | Combing metallogenic geochronological results of the Zimbabwe Craton, unequivocal field relationships, robust isotope systems constrain the timing of gold mineralization in major greenstone belts such as Harare-Shamva Belt, Midlands Belt, Mutare Belt and Northern Marginal Zone of the Limpopo Belt. The two phases of gold mineralization of 2 660 Ma-2 610 Ma and 2 420 Ma-2 380 Ma have been established. The former is syn-tectonic and approximate to end of stable cratonization of the Neoarchean crust and the latter related to the post-cratonization emplacement of the great dyke and extension resulted from regional stress transformation and wide-spread magmatism from reactivation. The phases can be correlated to those of typical cratons all over the world. |
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| Keywords: | timing of gold mineralization archaean eon craton Zimbabwe |
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