MORPHOMETRIC MODELING AND SELECTION OF SEARCH RESULTS BASED ON IT SIGNS OF POLYMETALLIC MINERALIZATION OF GOLD

Abstract

The article presents a method of predictive modeling using modern GIS technologies.  This method is based on traditional morphometry, as well as analysis and decoding of aerial and satellite images on the example of the Koskuduk gold and polymetallic deposit. As a result of the application of the presented method for the purpose of conducting prospecting and exploration work at the Koskuduk deposit, morphostructures of various genesis have been identified. To date, many components of morphometric analysis are integrated into modern software systems of spatial analysis (SpatialAnalysis) through the analytical apparatus of geoinformation systems.

A multispectral image from the Sentinel-2 satellite complex was used to remotely study the geological structure of the Koskuduk site and predict the spread of ore zones within the site itself and the adjacent territory.

Morphometric modeling made it possible to identify geological objects larger than 10 m in extent and more than 5 m in fall (width) and power. The accuracy of determining the characteristics of the reflected spectrum is complicated only by the presence of salt marshes.

Based on the obtained data, forecast maps were compiled based on modeling, taking into account the specifics of the formation of ore-bearing rocks. The final forecast model contains the contours of the recommended areas for further search and exploration.