海相火山岩区地质填图方法——以北祁连山东段白银矿田古火山机构厘定为例

发布时间：2018-05-04 03:25

本文选题：海相火山岩区 + 填图方法　；参考：《地质通报》2017年11期

【摘要】：20世纪90年代以来,火山机构控矿理论在海相火山岩区块状硫化物矿床研究中得到了越来越多的关注,基于该理论的指导,在北祁连山东段的白银矿田取得了找矿突破性进展。其间,详细的海相火山岩相地质填图工作为白银矿田火山机构与成矿联系的研究及找矿突破奠定了坚实的基础。反映出在海相火山岩区推行合理可行的火山岩相地质填图方法至关重要。以白银矿田海相火山岩区为例,首先,对该区大比例尺火山岩相填图及古火山机构厘定成果进行介绍;其次,通过分析、借鉴此成功案例,总结海相火山岩区填图内容和技术方法;最后,阐述应用该方法在北祁连山中段祁连县一带海相火山岩区进行大比例尺填图的成功尝试。
[Abstract]:Since 1990s, volcanic mechanism ore control theory has been paid more and more attention in the study of massive sulfide deposits in marine volcanic rock area. Based on the guidance of this theory, a breakthrough has been made in the silver ore field in the eastern part of North Qilian Mountains. During this period, detailed geological mapping of marine volcanic facies laid a solid foundation for the study of the relationship between volcanic mechanism and mineralization in Baiyin Orefield and the breakthrough in prospecting. It is very important to carry out reasonable and feasible geological mapping method of volcanic facies in marine volcanic rock area. Taking the marine volcanic rock area of Baiyin Orefield as an example, first of all, it introduces the results of large scale volcanic facies mapping and the determination of ancient volcanic mechanism in this area; secondly, through the analysis, we draw lessons from this successful case. This paper summarizes the mapping contents and technical methods of marine volcanic rocks, and finally, describes the successful attempt of large scale mapping of marine volcanic rocks in the middle part of North Qilian Mountains.
【作者单位】：中国地质调查局西安地质调查中心;
【基金】：中国地质调查局项目《祁连成矿带肃南—大柴旦地区地质矿产调查》(编号:DD20160012)
【分类号】：P588.14;P618.52;P623

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