Geochemical anomaly definition using stream sediments landscape modeling

• DOI: 10.1016/j.oregeorev.2022.104715
• Publication Date: 2022-01-20T07:16:12Z
• Authors: Haicheng Wang; Zhaoxian Yuan; Qiuming Cheng; Shengyuan Zhang; Behnam Sadeghi
• Keywords: Mineral exploration; Anomaly (physics)

Geochemical anomaly mapping is a crucial part of environmental and mineral exploration projects. Stream sediments are the most frequently sampling medium for geochemical in regional scales, resulting from various geological processes. To enhance stream sediments, landscape, including topographic factors drainage catchment basin extracted digital elevation model (DEM), average precipitations, were applied. These taken into consideration this research to investigate influence landscape constraints on Mo polymetallic mineralization typical hilly area Jining, Inner Mongolia, China, using Bayesian Maximum Entropy (BME) approach. Geographically weighted regression was applied construct probability density function soft data based slope, aspect, precipitation. sediment data, at scale 1:200,000 (hard data), integrated with map anomalies associated molybdenum-polymetallic mineralization. Considering influences during identification can make up shortage missing incomplete observations data. By integrating process, impacts dispersion halos addressed, accuracy improved. The areas defined by BME demonstrated that 31.41% study contained 75% known deposits consequently uncertainty reduced.