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黄金科学技术 ›› 2017, Vol. 25 ›› Issue (3): 19-27.doi: 10.11872/j.issn.1005-2518.2017.03.019

• 专题报道 • 上一篇    下一篇

胶东焦家成矿带超千米深部金矿勘查突破及意义——以纱岭矿区为例

宋国政1,闫春明1,曹佳2*,郭志峰1,鲍中义1,刘国栋1,李山1,范家盟1,刘彩杰1   

  1. 1.山东省第六地质矿产勘查院,山东  招远   265400;
    2.山东省地质矿产勘查开发局,山东  济南   250013
  • 收稿日期:2017-03-06 修回日期:2016-04-28 出版日期:2017-06-30 发布日期:2017-09-11
  • 通讯作者: 曹佳(1983-),男,内蒙古满洲里人,工程师,从事地质矿产勘查工作。dikechucj@126.com
  • 作者简介:宋国政(1970-),男,山东栖霞人,高级工程师,从事金矿勘查工作。lyzyzy@126.com
  • 基金资助:

    山东省泰山学者建设工程专项经费“胶东型金矿的构造岩浆背景和深部找矿关键技术”(编号:ts201511076)和山东省地质勘查项目“山东莱州—龙口断裂带金矿资源潜力调查与找矿方向研究”(编号:鲁勘字(2016)72号)联合资助。

Breakthrough and Significance of Exploration at Depth More than 1 000 m in Jiaojia Metallogenic Belt,Jiaodong:A Case of #br# Shaling Mining Area

SONG Guozheng1,YAN Chunming1,CAO Jia2,GUO Zhifeng1,BAO Zhongyi1,LIU Guodong1,LI Shan1,FAN Jiameng1,LIU Caijie1   

  1. 1.6th Geology & Mineral Resources Survey Institute,Shandong,Zhaoyuan   265400,Shandong,China;
    2.Shandong Provincial Bureau of Geology & Mineral Resources,Jinan   250013,Shandong,China
  • Received:2017-03-06 Revised:2016-04-28 Online:2017-06-30 Published:2017-09-11

摘要:

纱岭矿区超千米深部找矿突破是科学预测与勇于探索有机结合的结果。结合地球物理探测、阶梯式成矿模式、趋势外推及矿体空间分布规律等,在纱岭矿区预测并圈定了3处深部找矿靶区,按照“整体部署、分段实施”及“边施工、边研究、边调整”的原则分3个阶段完成了靶区验证和勘查工作。所取得的深部找矿突破有:在纱岭矿区共探获工业矿体77个,新增金金属量389 t;Ⅰ-2号主矿体单矿体资源量超过300 t,赋矿标高为-940~-2 030 m,矿体最大走向长1 680 m,最大倾斜长2 180 m,最大控制垂深为1 039 m,厚度为1.16~125.64 m。纱岭金矿床赋存于焦家断裂下盘,主矿体与其浅部相邻矿区矿体连续延深的垂向距离>2 km,远远超过了浅成低温热液金矿的形成深度,表明胶东型金矿与浅成低温热液型矿床的形成环境明显不同,预测其深部找矿潜力巨大。进一步分析表明,纱岭矿区南侧的前陈—上杨家预测区和深部的招贤预测区仍有较大的找矿潜力。

关键词: 纱岭矿区, 超大型金矿, 深部找矿, 靶区优选, 超千米深度, 焦家成矿带, 胶东型金矿

Abstract:

The breakthrough of deep prospecting of depth more than 1000 m in the Shaling mining area is the organic combination of scientific prediction and brave exploration.According to geophysical,“ladder-type” metallogenic theory,trend extrapolation  and spatial distribution of ore body,three deep mineralization targets have been predicted in Shaling mining area.Then target  verification and exploration work are completed in three stages following the principle of “overall deployment,phased implementation”  and“studying and adjustment should be take in the process of project implementation”.There has a great breakthrough in deep exploration:77 industrial orebodies increased the amount of gold by 389 t and the single ore resources of No.Ⅰ-2 main ore body is more than 300 t,whose ore bearing elevation is -940~ -2 030 m,the maximum length of orebody trend is 1 680 m,the maximum inclination is 2 180 m,the maximum control vertical depth is 1 039 m,and thickness is 1.16~125.64 m.In conclusion,Shaling gold deposit occurs in the footwall of Jiaojia fault,the vertical distance of the continuous extension of the main orebody and its adjacent mining area is more than 2 km,much deeper than mineralization depth of the epithermal gold deposit,indicating the metallogenic environment of Jiaodong type gold deposit and epithermal deposit is obviously different,and the prospecting potential of Jiaodong type gold deposit is huge.Further analysis shows that Qianchen-Shangyangjia prediction area and Zhaoxian prediction area still have a good prospecting potential.

Key words: Shaling mining area, super-large gold deposit, deep prospecting, target area selection, depth more than 1 000 m, Jiaojia metallogenic belt, Jiaodong type gold deposit

中图分类号: 

  • P618.51

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