黄金科学技术 ›› 2023, Vol. 31 ›› Issue (5): 707-720.doi: 10.11872/j.issn.1005-2518.2023.05.090
• 矿产勘查与资源评价 • 下一篇
单文法1,2,3,4(),毛先成2,3(),刘占坤2,3,邓浩2,3,陈进2,3,张维2,3,5,王海正6,杨鑫6
Wenfa SHAN1,2,3,4(),Xiancheng MAO2,3(),Zhankun LIU2,3,Hao DENG2,3,Jin CHEN2,3,Wei ZHANG2,3,5,Haizheng WANG6,Xin YANG6
摘要:
大尹格庄金矿床的形成涉及到构造变形、流体活动、热量传递和水岩反应等过程的相互耦合作用。利用FLAC3D数值模拟软件,结合现代矿化率概念,开展了大尹格庄金矿床力—热—流—化耦合的数值模拟,以探讨断裂、体积形变与化学过程耦合对金矿体就位的控制作用。研究结果表明:正体积应变、流体汇聚和金析出量(负矿化率)的高值区均位于控矿招平断裂倾角由陡倾向缓倾转换部位以及断裂局部起伏部位,与金矿体的实际空间分布相吻合,反映出成矿流体更多地汇聚、停留在这些部位,并发生强烈的化学反应,引起金的沉淀析出。这种多物理—化学过程在相同部位的耦合可能是控制大尹格庄金矿床形成的关键因素,基于该成矿规律,推测大尹格庄金矿区深部具有较大的成矿潜力。
中图分类号:
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