| 何胜飞,孙凯,刘晓阳,王杰,任军平.津巴布韦太古宙花岗-绿岩型金矿类型与资源潜力[J].地质找矿论丛,2015,30(S1):82-92 |
| 津巴布韦太古宙花岗-绿岩型金矿类型与资源潜力 |
| Gold mineralization types and resources potential of the Archaean granitiod-greenstone belts in Zimbabwe |
| 投稿时间：2015-09-14 |
| DOI：10.6053/j.issn.1001-1412.2015.S1.010 |
| 中文关键词: 金矿类型 花岗-绿岩带 资源潜力 津巴布韦 |
| 英文关键词:gold mineralization type granitoid-greenstone belt resources potential Zimabwe |
| 基金项目:中国地质调查局项目"非洲中南部重要矿床地质背景、成矿作用和找矿潜力研究"(编号:1212011220910)及国外风险勘查基金项目(编号:科[2011]D3-04)资助。 |
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| 中文摘要: |
| 津巴布韦太古宙花岗-绿岩型金矿床受构造的控制,金矿可分为褶皱控矿型、剪切带控矿型、层控型、深成花岗岩控矿型和构造-蚀变岩型等5类。津巴布韦花岗-绿岩型金矿多产于花岗质片麻岩与绿岩带的接触带上,金以自然金或金的硫化物形式产出。金矿成矿时代大致分为(2660±50)Ma和(2410±70)Ma(米德兰德绿岩带北部白钨矿Sm-Nd测年)2个时段,分别与新太古代TTG事件和大岩墙侵入相关。津巴布韦花岗-绿岩型金矿较多,但发现的中-大型绿岩型金矿较少,具有较好的金矿找矿前景。 |
| 英文摘要: |
| Gold mineralization in the Archaean granitiod-greenstone belts of the Zimbabwe Craton is controlled by structure and can be divided into fold-control, shearing zone-control, stratabound, plutonic granite-control and cataclastic altered rock types. Gold deposits in the Archaean granitiod-greenstone belts occur generally at contact of the granitic gneiss and the greenstone belt. Gold occurs in native gold or sulfides. Sm-Nd age dating of scheelites in the north Midlands green stone belt is distinctly at two intervals of 2.66±0.05 Ga and 2.41±0.07 Ga related to the late Archean TTG events and the Great Dyke intrusion respectively. The Archaean granitiod-greenstone belts are scattered with many gold deposits and potential for further prospecting. |
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