The surface mineral exploration information of uranium deposits in sedimentary basins is often weak and unidentifiable. To study the rapid, efficient, and economical method, we conducted large-scale and high-precision aerial gamma energy spectrometry measurements using an unmanned helicopter in the Gexi area of the Erlian Basin, Inner Mongolia. The distribution characteristics and enrichment patterns of radioactive elements like uranium, thorium and potassium were analyzed through data processing and interpretation. In this paper, we compare these findings with the tectonic and sedimentary characteristics to explore the relationships among the energy spectrum anomaly features, radon gas anomaly features, and known uranium mineralization features. The results show that airborne gamma spectrometry information serves as a reliable indicator of the distribution of sandstone-type uranium ore bodies. Furthermore, it also helps in determining the redox zoning and uranium mineralization in the sedimentary basin.

沉积盆地铀矿床的地表矿产勘查信息往往薄弱且无法识别。为了研究快速、高效、经济的方法，我们利用无人机在内蒙古二连盆地格西地区进行了大范围、高精度的航空伽马能谱测量。通过数据处理和解释，分析了铀、钍、钾等放射性元素的分布特征和富集规律。本文将这些发现与构造和沉积特征进行比较，探讨能谱异常特征、氡气异常特征和已知铀矿化特征之间的关系。结果表明，航空伽马能谱信息可以作为砂岩型铀矿体分布的可靠指标。此外，它还有助于确定沉积盆地的氧化还原分带和铀矿化。