Digital modeling in the study of heavy mineral placers

Abstract

For comprehensive study of heavy mineral placers the modern methods areneeded for integrated analysis. The generalization of methodological approaches and techniques has done for two kinds of modeling, widely used in the study of placers. The digital structural-lithological (DSL) modeling [1] is based on the principles of authoring partition for geological objects using a wide range of lithological, geochemical, metallogenic properties and other features. DSL-model is built as the result of computer processing of the target database, prepared on the basis of these principles. Methodology of geological-dynamic modeling of heavy mineral placers [2] is based on the study of the dynamic mechanisms of the main stages of placer formation processes-from the mobilization in the load sources of placer-forming material to deposition in the terminal sedimentary basin. Technology of hybrid expert systems [3] is the best for development of expert systems based on digital models for target prediction and evaluation of placer objects, because it permits the using of different knowledge about the object of study in various forms, allowing their automatically applying during expert system operation. The experimental sample model shave shown a high level oftargetfunction. .