| 许磊,刘永团.甘肃阳山金矿带矿床地质特征、控矿因素及找矿标志[J].矿产勘查,2018,9(2):266-272 |
| 甘肃阳山金矿带矿床地质特征、控矿因素及找矿标志 |
| Geological characteristics, ore-controlling factors and prospecting indicators in Yangshan gold belt of Gansu |
| 投稿时间：2017-07-25 |
| DOI： |
| 中文关键词: 阳山金矿带 安坝 找矿标志 甘肃 |
| 英文关键词: Yangshan gold belt, Anba prospecting indicator, Gansu |
| 基金项目:中国地质调查局甘肃省文县阳山金矿带深部矿产远景调查(编号:12120114038301)资助。 |
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| 中文摘要: |
| 阳山金矿带全长超过30 km,其中安坝矿段为金矿集中区。为了进一步扩大阳山金矿带资源量,通过总结安坝矿段成矿地质背景、矿床地质特征,厘定了阳山金矿带的控矿因素及找矿标志,研究表明:(1) 安坝矿段主要含矿地层为中泥盆统三河口群千枚岩。(2) 观音坝断裂及其次级断裂为主要的控矿断裂,严格控制矿体的空间展布及产出形态。(3) 强烈的硅化、黄铁矿化等围岩蚀变特征是寻找金矿床的直接标志。(4) 区内金元素异常明显为矿致异常,为矿区最直接的找矿标志。 |
| 英文摘要: |
| The Yangshan gold belt strikes more than 30 km in long, on which Anba gold section is a concentrated area of gold deposits. In order to enlarge the resources of Yangshan gold belt, we researched and confirmed the ore- ontrolling factors and prospecting indicators of Yangshan gold section by anglizing and summarizing its geological background, and geological features in this paper . The result of our research shows that:① The main ore bearing strata of Anba section locates in the phyllite of Devonian Sanhekou group.② Guanyinba fault and its secondary faults are the main ore controlling faults which strictly control the spatial distribution and occurrence of the orebodies.③ The strong alteration of the surrounding rocks such as silicification and mineralization of pyrite is the direct indicator for finding gold deposits.④The gold element anomalies in this section obveriously are mineal anomalies. |
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