| 瞬变电磁测深在铝土矿勘查中的应用 |
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| 引用本文： | 张林.瞬变电磁测深在铝土矿勘查中的应用[J].地质与勘探,2007,43(2):68-71. |
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| 作者姓名： | 张林 |
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| 作者单位： | 河南省有色金属地质勘查总院,郑州,450052 |
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| 摘 要： | 铝土矿具有明显的分布产出规律,产状比较平缓.铝土矿含矿岩系与其基底灰岩存在明显的电阻率差异,是开展瞬变电磁测深工作的基本依据.依据施测的瞬变电磁异常,分析利用全区公式进行反演计算的视电阻率剖面,可以对灰岩基底的产状及埋深进行推断.对照工程施工剖面,推断的灰岩界面与其基本对应,验证了瞬变电磁工作的推断结果.
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| 关 键 词： | 铝土矿 基底灰岩 瞬变电磁测深 |
| 文章编号： | 0495-5331(2007)02-0068-04 |
| 修稿时间： | 2006-03-06 |
APPLICATION OF TRANSIENT ELECTROMAGNETIC METHOD IN EXPLORATION OF BAUXITE DEPOSITS |
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| ZHANG Lin.APPLICATION OF TRANSIENT ELECTROMAGNETIC METHOD IN EXPLORATION OF BAUXITE DEPOSITS[J].Geology and Prospecting,2007,43(2):68-71. |
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| Authors: | ZHANG Lin |
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| Institution: | Henan Institute of Non -ferrous Geology Exploration, Zhengzhou 450052 |
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| Abstract: | Bauxite has an obvious regularity of distribution with gently occurrence. Ore - bearing rock series of bauxite and underlying limestone have an obvious divergence of electrical resistivity, and the divergence is the base for transient electromagnetic method in exploration of bauxite deposits. According to actual measurement anomaly of transient electromagnetism and apparent resistivity profile inversed by calculation for full region, occurrence and depth of underlying limestone or bonanza can be confirmed. Compared with actual engineering profile, inferred boundary of underlying limestone is roughly corresponding to real one, and inferred results of transient electromagnetic method are verified. |
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| Keywords: | bauxite underlying limestone transient electromagnetic method |
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