Application of GIS for assessing the mineral potential in the Sefidsang, Torbat-e Jam and Aqdarband sheets
This study tries to identify the affective factors controlling the mineralization using the known deposits and mineral indications to produce the mineral potential map of the region. Torbat-e Jam is one of the twenty exploration zones in Iran that was selected and studied for lithology, tectonics, geochemistry, airborne geophysics and remote sensing. The mineral potential map of the area was prepared.
The first chapter includes a summary of GIS and its application to geology and mineral exploration.
The second chapter presents a review of geography, geology and tectonics of the study area. The third chapter describes the steps of main work for producing the mineral potential map of the area in detail. Selected mineral models are presented. They involve vein antimony, mesothermal vein gold, hot spring-related gold deposits, and Cyprus-type massive sulfide deposits. After this step, required data was gathered, digitized and entered into the GIS. Utilized maps include 12 1:50000 topography maps, two 1:100000 geology maps, a 1:250000 geology quadrangle, mineral distribution data, geochemical data, airborne geomagnetic data and structural map of the area. All these data were digitized and entered into GIS.
A pre-processing step in the project was carried out that includes integration of geology maps, review of mineral distribution data, processing of remote sensing data for detection of alterations, and airborne geophysical data analysis.
At the final step, the processing of above mentioned data led to indicator maps that were evaluated based on selected mineralization models. By compilation of four maps of four models, the final mineral potential map of the region was produced. A filed work was conducted to check the anomalies and expected potentials.