USING GIS FOR SPOTTING GOLD PROVENANCE AREAS: THE CASE OF SOKHATINOE DEPOSIT

The paper discusses the method of constructing maps of gold provenance areas within Sokhatinoe Au-polymetallic deposit (Erikit metallogenic zone). In order to find the provenance areas, the ESRI ArcGIS software application and ArcGIS Spatial Analyst, ArcGIS 3D Analyst software were used to perform spatial analysis of raster data (cell-based). To solve the problem, the Surface group of tools was used to quantify and display the forms of the relief of the studied area. At the initial stage, a raster surface was constructed using the Topo to raster tool on the digitized topography of Sokhatinoe deposit. Subsequently, we calculated the Exposure from the resulting relief surface - to determine the slope exposure relative to the sides of world and Slope - to determine the slope (gradient or steepness) for each cell on the raster surface. As a result of the mathematical processing of the raster of the surface of the relief around the deposit, the areas that were certified during field studies were outlined. To calculate the tracks of removal on the surface of the relief, the Create Steepest Path tool was used. The output of this procedure is a graphic 3D line on the map. In the place where the convergence of the removal tracks was observed, an area for detailed search works was selected. During the field verification of the selected area, with digging 30-40 cm in depth, fragments of a carbonate vein were found with visible sulfide mineralization, represented by pyrite and copper greens, in which the content of Au in the amount of 89 ppm was determined according to laboratory research results.

ArcGIS, ArcGIS, Sokhatinoe, gold, demolition vector, grid, slope, aspect, aggregate

1. Шпикерман В.И. Домеловая минерагения Северо-Востока Азии. -Магадан: СВКНИИ ДВО РАН, 1998. - 333 с.

2. Тектоника, геодинамика и металлогения территории Республики Саха (Якутия). - М.: Наука // Интерпериодика, 2001. - 570 с.

3. Горячев Н.А. Геология мезозойских золото-кварцевых жильных поясов Северо-Востока Азии. - Магадан: СВКНИИ ДВО РАН, 1998. - 210 с.

4. Лоскутов Е.Е., Кравченко А.А., Журавлев А.И., Иванов А.И. Интерпретация геофизических полей средствами геоинформационный системы ArcGIS // Геология и минерально-сырьевые ресурсы Северо-Востока России: материалы всероссийской научно-практической конференции. Том 1. - Якутск, 2018. - С. 91-95.

5. ESRI ArcGIS Spatial Analyst. Руководство пользователя. - 2004. - 216 с.

6. ESRI ArcGIS 3D Analyst. Руководство пользователя. - 2004. - 328 с.