| 华南（东）变质基底特征、古构造型式及铀、金矿化远景 |
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| 引用本文： | 余达淦,管太阳,黄国夫.华南（东）变质基底特征、古构造型式及铀、金矿化远景[J].铀矿地质,1996(6). |
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| 作者姓名： | 余达淦 管太阳 黄国夫 |
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| 作者单位： | 华东地质学院 |
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| 摘 要： | 华南（东）变质基底由杨子及华夏两块不同特征的地质体组成，中元古代之后，该地区分别经过了碰撞对接、拉开、再拼贴的演化过程。碰撞对接带和在古裂谷系基础上成型的陆内推覆及平移、剪切型拼贴带构成了本区基底构造主要型式。铀及金矿远景与基底特征关系密切，铀矿主要产于基底裂隆带部位，金则主要产于裂凹（裂陷）带部位。古基底构造交叉部位是中新生代构造活动活跃部位，受其控制的早期横向火山裂谷盆地，在晚期拉张条件下形成的岩浆杂岩带是铀、金、多金属成矿最佳远景区。
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| 关 键 词： | 华南变质基底，古构造型式，铀、金矿化 |
METAMORPHIC BASEMENT CHARACTERISTICS,PALAEO-TECTONIC PATTERNS AND PROSPECT OF URANIUMAND GOLD MINERALIZATION IN SOUTH(EAST)CHINA |
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| Yu Dagan, Guang Taiyang, Huang Guofu.METAMORPHIC BASEMENT CHARACTERISTICS,PALAEO-TECTONIC PATTERNS AND PROSPECT OF URANIUMAND GOLD MINERALIZATION IN SOUTH(EAST)CHINA[J].Uranium Geology,1996(6). |
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| Authors: | Yu Dagan Guang Taiyang Huang Guofu |
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| Abstract: | The metamorphic basement in South (East) China is composed of two geological terrains, Yangtze and Cathaysian, with different characteristics. After the Midde Proterozoic,the area experienced the evolution: collision-welding-pulling apart-rewelding. The main patterns of basement structures in the area are collision-welding zone and the intracontinentalthrusting and strike-slip shearing welding zone which were developed on the old rift system.Uranium and gold prospect are intimately related with the basement structure. Uranium deposits mainly occur in the faulted--uplifted portion of the basement, while gold deposits, inthe taphrogenic portion. The intersection part of the palaeobasement structures is an activepart of Mesozoic-Cenozoic tectonic activities and the lateral volcanic rift basins controlled bythe Meso-Cenozoic tectonics at the early stage and the magmatic complex belt formed underthe extension condition at the late stage are the best prospective areas of uranium, gold andpolymetallic metallogenesis. |
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| Keywords: | Metamorphic basement of South China Palaeo-tectonic pattern Uraniumand gold mineralization |
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