| 云南莫霍面形状与大型矿床空间关系探讨 |
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| 引用本文： | 曹显光,王兴彬.云南莫霍面形状与大型矿床空间关系探讨[J].云南地质,2001,20(1):73-80. |
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| 作者姓名： | 曹显光 王兴彬 |
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| 作者单位： | 1. 西南有色地质勘查局地质研究所,云南,昆明,650051
2. 西南有色地质勘查局物探队,云南,呈贡,650500 |
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| 摘 要： | 以32个大型金属矿床为例，探讨其与莫霍面形态，空间关系及其相关的问题，应用的莫霍面图可靠程度较高，莫霍面形态复杂，地幔坳陷分坳陷带和坳陷区两大类，大小不一，统计显示，大型矿床平均分布于规模较大的幔坳中心两侧22km范围内，其原因可能有三：一是界面金属原子的能量比内部要大得多，它的活动性增强，有利于成矿作用的进行，二是边缘成矿效应，三是坳陷两侧往往被超壳断裂切穿，成为矿液上升的通道和赋矿场所，提出云县－勐海、兰坪东支杆－三山及宾川小龙潭三个预测区，认为思茅以东 江以北及昆明－石屏等幔坳带两侧，均是寻找大型矿床的有利区带。
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| 关 键 词： | 莫霍面形态 预测区带 云南 金属矿床 空间关系 成矿作用 |
| 文章编号： | 1004-1885(2001)01-0073-08 |
| 修稿时间： | 2000年8月2日 |
A DISCUSSION ABOUT THE RELATIONSHLP BETWEEN MOHO FORM AND SPATIAL DISTRIBUTION OF LARGE ORE DEPOSIT IN YUNNAN |
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| CAO Xian-guang,WANG Xing-bin.A DISCUSSION ABOUT THE RELATIONSHLP BETWEEN MOHO FORM AND SPATIAL DISTRIBUTION OF LARGE ORE DEPOSIT IN YUNNAN[J].Yunnan Geology,2001,20(1):73-80. |
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| Authors: | CAO Xian-guang WANG Xing-bin |
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| Abstract: | Taking 32 large metal deposits as examples,we have a discussion about their spatial relationship with Moho form and the related problems.According to the statistics,large ore deposits are distributed not outside an average distance 22km from the center of large mantle depression.The possible causes are as follows.1 The energy of metal atom at the boundary surface is very larger than that in the inner part,which is advantageus for metallogenesis;2 It is a marginal metallogenetic effect;3 The both sides of depression are generally cut by fault penetrating crust,which becomes the rising path of metallogenetic liquid and ore-bearing place.We put forward 3 prognostic areas separately distributed in Yunxian-Menghai;Dongzhigan-Sanshan,Lanping;Xiaolongtan,Binchuan.Aud we think that the both sides of mantle depression zone east of Simao,west of Lijiang,in Kunming-Shiping are the advantageous areas for prospecting large ore deposit. |
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| Keywords: | Moho Form Large Ore Deposit Prognostic Area Yunnan |
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