A simple application study of remote sensing technology in copper-gold ore prospecting in the Altyn region of Xinjiang
遥感技术在新疆阿尔金地区铜金矿找矿中的简易应用研究

摘要

新疆阿尔金成矿带是我国西北重要的铜金矿富集区，区域地形复杂、自然环境恶劣，传统的野外找矿作业难度大、效率低、成本高。本文以简易化遥感找矿技术为研究核心，依托陆地卫星8号(Landsat-8)、高级星载热发射和反射辐射计(Advanced Spaceborne Thermal Emission and Reflection Radi-ometer，ASTER)遥感影像数据，结合区域地质成矿特征，用影像预处理、蚀变信息提取、异常区域筛选等简易流程，开展铜金矿找矿应用研究。总结出适合阿尔金地区遥感找矿的简易方法，准确提取出铁染、羟基等关键蚀变异常信息，用已知矿点来验证技术的有效性。研究结果表明简易遥感技术可以快速圈定找矿靶区，减少野外勘查工作量，给区域中小型铜金矿快速勘查提供高效低成本的技术支持。

Abstract

The Altyn ore deposit belt in Xinjiang is an important copper-gold ore concentration area in the northwest of China. The regional topography is complex and the natural environment is harsh. Traditional field prospecting operations in this area are difficult, inefficient, and costly. This paper takes the simplified remote sensing prospecting technology as the core of the research, using Landsat-8 and ASTER remote sensing image data, combined with the regional geological and mineralization characteristics, and using simple processes such as image preprocessing, alteration information extraction, and anomaly area screening, to conduct prospecting application research for copper-gold ore deposits. Simple methods suitable for remote sensing prospecting in the Altyn area have been summarized, and key alteration abnormal information such as iron staining and hydroxyl groups has been accurately extracted. The effectiveness of the technology has been verified using known ore points. The research results show that the simplified remote sensing technology can quickly delineate prospecting target areas, reduce the amount of field exploration work, and provide efficient and low-cost technical support for the rapid exploration of regional small and medium-sized copper-gold ore deposits.