多龙矿集区控矿构造信息提
发布时间：2018-12-11 11:34
【摘要】：西藏多龙矿集区近年来发现了大量的铜、金矿床,具有可观的资源潜力而倍受关注。通过对区内地质调查及矿产勘查数据的系统梳理与二次开发,利用基于分形理论的空间分析方法对该区成矿背景、构造格架等方面进行了深入细致的研究与探索。通过主成分分析方法,将水系沉积物地球化学数据中与斑岩铜金成矿相关元素和构造活动指示元素进行融合,并利用S-A(能谱-面积)模型对元素组合异常进行信息挖掘工作。结果表明,与区内构造格架相关的地球化学异常空间分布模式在指示矿化的同时,还对其与区域断裂构造之间的成生关系具有相当程度的指示意义。此外,区内开展的空间定量研究同时表明,S-A(能谱-面积)模型对描述由特定地质作用所造成的异常空间分布模式的自相似性有效,特别是针对地球化学背景模式的空间定量化描述,能更加深刻地刻画区内的构造格架并反映成矿背景。其结果推断了控制区内斑岩成矿系统的网格状断裂体系。此外,数据分析建模过程为在该区开展进一步的多元信息提取与融合提供了思路和借鉴经验,有利于找矿新靶区的发现与圈定。
[Abstract]:In recent years, a large number of copper and gold deposits have been discovered in the Dulong ore concentration area, Tibet. Based on the systematic analysis and secondary development of geological survey and mineral exploration data in this area, the metallogenic background and tectonic framework in this area are studied and explored in detail by using the spatial analysis method based on fractal theory. By means of principal component analysis (PCA), the geochemical data of water system sediments are fused with porphyry copper-gold metallogenic elements and indicator elements of tectonic activity. And S-A (energy spectrum-area) model is used to mine the information of element combination anomaly. The results show that the spatial distribution model of geochemical anomalies associated with the tectonic framework in the region indicates mineralization and the relationship between geochemical anomalies and regional fault structures to a certain extent. In addition, the spatial quantitative studies carried out in the region also show that the S-A model is effective in describing the self-similarity of the spatial distribution patterns of anomalies caused by specific geological processes. Especially the spatial quantitative description of geochemical background model can depict the tectonic framework and reflect the metallogenic background more deeply. The results infer the mesh-like fault system of porphyry metallogenic system in the control area. In addition, the process of data analysis and modeling provides ideas and experiences for further multivariate information extraction and fusion in this area, and is conducive to the discovery and delineation of new targets for prospecting.
【作者单位】： 中国地质科学院矿产资源研究所;中国地质科学院地质力学研究所;成都理工大学;
【基金】：国家自然科学基金项目(编号:41402295);国家自然科学基金重点项目(编号:41430320) 中国地质调查局项目(编号:DD20160026;DD20179142) 国土资源部公益性行业科研专项(编号:201511017)联合资助~~
【分类号】：P612
本文编号：2372476
[Abstract]:In recent years, a large number of copper and gold deposits have been discovered in the Dulong ore concentration area, Tibet. Based on the systematic analysis and secondary development of geological survey and mineral exploration data in this area, the metallogenic background and tectonic framework in this area are studied and explored in detail by using the spatial analysis method based on fractal theory. By means of principal component analysis (PCA), the geochemical data of water system sediments are fused with porphyry copper-gold metallogenic elements and indicator elements of tectonic activity. And S-A (energy spectrum-area) model is used to mine the information of element combination anomaly. The results show that the spatial distribution model of geochemical anomalies associated with the tectonic framework in the region indicates mineralization and the relationship between geochemical anomalies and regional fault structures to a certain extent. In addition, the spatial quantitative studies carried out in the region also show that the S-A model is effective in describing the self-similarity of the spatial distribution patterns of anomalies caused by specific geological processes. Especially the spatial quantitative description of geochemical background model can depict the tectonic framework and reflect the metallogenic background more deeply. The results infer the mesh-like fault system of porphyry metallogenic system in the control area. In addition, the process of data analysis and modeling provides ideas and experiences for further multivariate information extraction and fusion in this area, and is conducive to the discovery and delineation of new targets for prospecting.
【作者单位】： 中国地质科学院矿产资源研究所;中国地质科学院地质力学研究所;成都理工大学;
【基金】：国家自然科学基金项目(编号:41402295);国家自然科学基金重点项目(编号:41430320) 中国地质调查局项目(编号:DD20160026;DD20179142) 国土资源部公益性行业科研专项(编号:201511017)联合资助~~
【分类号】：P612
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