| 马为,雷清,吴晓飞,刘涛,范剑,郭忠.招平断裂带南段深部电性结构研究及找矿意义[J].矿产勘查,2023,14(7):1152-1160 |
| 招平断裂带南段深部电性结构研究及找矿意义 |
| Research on the deep electrical structure of the southern section of the Zhaoping fault zone and its prospecting significance |
| 投稿时间：2023-04-12 修订日期：2023-06-20 |
| DOI：10.20008/j.kckc.202307015 |
| 中文关键词: 招平金矿带 大地电磁 电性结构 深部找矿 |
| 英文关键词: Zhaoyuan-Pingdu gold metallogenic belt magnetotelluric electrical structure deep prospecting |
| 基金项目:本文受“刚果（金）龙溪铜矿成矿规律研究项目（总院科［2023］01号）”资助。 |
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| 中文摘要: |
| 山东招（远）—平（度）断裂带是胶西北金矿集区内3条NE向主要控矿断裂之一，其中段、北段均已发现大型—特大型金矿床，研究程度较高，南段研究程度明显偏低。本文以该断裂带南段为研究对象，通过分析大地电磁测深MT成果揭示的深部电性结构和断裂空间分布、控矿构造深部特征，结合区内已有重磁资料及成矿规律研究成果，对与金成矿密切相关的断裂下盘玲珑序列花岗岩分布、老变质基底特征等成矿要素进行了分析推断，研究认为NE向断裂与基底交汇处、断裂走向变化位置和断裂倾角变化形成的“构造台阶”等部位具有较大的深部金成矿潜力，本研究为推动招平断裂南段深部找矿突破提供了参考。 |
| 英文摘要: |
| Zhaoyuan-Pingdu fault zone in Shandong Province is one of the three main NE-trending ore-controlling faults in the northwest gold concentration area. Large and super-large gold deposits have been found in the middle and northern sections， and the research degree is relatively high， while the research degree in the southern section is obviously low. Taking the southern part of the fault zone as the research object， this paper analyzes the deep electrical structure， spatial distribution of faults and deep characteristics of ore-controlling structures revealed by the results of magnetotelluric sounding MT， and combined with the existing gravity and magnetic data and the research results of mineralization law in the area， analyzes and deduces the metallogenic elements of the fault footer's fine-sequence granite distribution and the characteristics of old metamorphic basement， which are closely related to gold mineralization. It is concluded that the intersection of NE-trending fault and basement， the "tectonic step" formed by the change of fault strike and fault dip have great deep gold mineralization potential， and this study provides a reference for promoting the deep prospecting breakthrough in the southern part of Zhaoping fault. |
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