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逆冲推覆构造控矿特征与找矿预测研究——以辽宁省北票市赵货郎沟断裂为例

Research on the Mineralization Control Characteristics and Prospecting Prediction of Reverse Thrust Fold Structures—Take the Zhaohuolanggou Fault in Beipiao City, Liaoning Province as an example

  • 摘要: 逆冲推覆构造作为一种重要的控矿构造,已成为多种矿产找矿突破的关键。为了深化构造控矿规律研究,指导金矿找矿工作,以辽宁省北票市赵货郎沟断裂为例,通过对以往地质成果资料的深度梳理和剖析,阐明构造控矿要素及蚀变特征,明确赵货郎沟断裂为逆冲推覆构造。选择赵货郎沟断裂东段的喇嘛沟金矿床开展成矿地质特征研究结合区域典型金矿床地球物理特征构建综合找矿模型,在外围的逆冲推覆构造西南段耦合人工重砂异常、激电中梯异常,圈定住户沟区段为找矿靶区,为已有探矿权外围找矿指明了方向,也对辽西地区金矿找矿工作具有一定借鉴意义。

     

    Abstract: The reverse thrust fold structure, as an important ore-controlling structure, has become a key factor for breakthroughs in the exploration of various mineral resources. To deepen the study of the ore-controlling laws of structures and guide the gold exploration work, taking the Zhaohuolanggou Fault in Beipiao City, Liaoning Province as an example, through in-depth sorting and analysis of previous geological data, the ore-controlling elements and alteration characteristics of the structure were clarified, and it was determined that the Zhaohuolanggou Fault is a reverse thrust fold structure. The Lamagou gold deposit in the eastern section of the Zhaohuolanggou Fault was selected for the study of the geological characteristics of ore formation combined with the geophysical characteristics of typical gold deposits in the region to construct a comprehensive gold exploration model. The southwestern section of the peripheral reverse thrust fold structure was coupled with artificial heavy sand anomaly and induced current middle gradient anomaly, and the Zhuhugou section was determined as the gold exploration target area, which pointed out the direction for the peripheral exploration of existing exploration rights and also has certain reference significance for the gold exploration work in the Liaoxi region.

     

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