黄金科学技术 ›› 2023, Vol. 31 ›› Issue (4): 560-579.doi: 10.11872/j.issn.1005-2518.2023.04.178
Zhongping FAN(),Wang ZHANG,Wei WANG
摘要:
近年来,陕西省山阳王家坪—商南一带已发现多种类型的金矿床,然而以往研究缺少对该区域典型矿床的细致解剖,对区域金矿床控矿因素、赋存规律及矿床成因的认识不足,导致区内成矿规律和找矿方向不明晰,制约了本区找矿突破。在调查区域地质构造背景的基础上,系统梳理了王家坪—商南一带典型金矿床地质特征、控矿因素及赋矿规律,结合典型金矿床的流体包裹体特征,总结了区内金矿床(点)空间分布特征、成矿条件及赋存规律。研究表明:区内金矿床(点)受近EW向山阳—凤镇断裂、镇安—板岩镇断裂或其次级断裂带控制,发育在特定地层的层间断裂或剪切断裂中,受断裂和地层双重因素控制,总体呈近EW向带状分段富集,在不同地段金矿体受不同形式断裂控制,总体呈透镜状产出。根据矿区成矿特征、控矿因素及成矿规律,建立了区内金矿找矿预测模型,并结合地层、构造及化探异常分布范围预测出找矿靶区5处,为该区下一步找矿勘查部署提供了新思路和新方向。
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