| 吴小勇,左焕成,王阳玲.音频大地电磁测深在西藏某斑岩铜矿深部找矿中的应用[J].地质找矿论丛,2016,31(4):576-579 |
| 音频大地电磁测深在西藏某斑岩铜矿深部找矿中的应用 |
| Application of Audio magnetotelluric sounding to deep prospecting of a porphyry copper mine in Tibet |
| 投稿时间：2016-06-24 |
| DOI：10.6053/j.issn.1001-1412.2016.04.015 |
| 中文关键词: 音频大地电磁测深 高阻体 深部找矿 斑岩型铜矿 西藏 |
| 英文关键词:audio magnetotelluric sounding high resistance body deep prospecting porphyry copper mine Tibet |
| 基金项目: |
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| 中文摘要: |
| 文章阐述了在西藏尼木县某斑岩铜矿区开展的音频大地电磁测深工作，并取得了较好的勘查效果。经由钻孔验证，在4 800~5 300 m段见铜、钼矿化二长花岗斑岩，品位w（Cu）=0.05%~1.4%、w（Mo）=0.1%~0.27%。利用音频大地电磁测深勘探深度大、不受高阻层屏蔽、对低阻体敏感等优点，结合高精度磁测、激电资料，有效指导该区隐伏矿体的勘查工作。实践证明，音频大地电磁测深在斑岩铜矿深部找矿中行之有效，值得借鉴。 |
| 英文摘要: |
| Audio magnetotelluric sounding survey has been applied to a porphyry copper mine in Nimu county, Tibet. Drill holes hit Cu-Mo-mineralized monzogranitic porphyry at depth 4 800~5 800 m. The grade is w(Cu)=0.05%~1.4%, w(Mo)=0.1%~0.27%. Audio magnetotelluric sounding is characteristic of exploration to great depth, little affection of high resistance layer and sensitivity to low resistance body. Combined with high precision magnetic survey and IP data, Audio magnetotelluric sounding survey guide to concealed ore body thus is effective for deep prospecting of porphyry copper deposit. |
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