Forecasting of technogenic placer dynamics in the shore zone of the sea on the basis of numerical modeling: The case of the Val’kumei deposit

Abstract

As natural placer and primary ore deposits are exhausted, the role of technogenic deposits is increasingly growing. In some cases, technogenic components accumulate in the shore zone of the shelf. The proposed numerical dynamic model is based on data concerning the technogenic tin deposit formed as a product of 50 years of operations at the Val’kumei Mining and Concentrating Combine, which disposed of tin ore flotation tailings in the coastal zone of the Chaun Gulf of the East Siberian Sea. The developed model describes adequately the current placer dynamics and forecasts a change in the morphology and geochemical parameters of a technogenic fan, opening the way to modeling behavior of natural geochemical anomalies in the coastal zone under conditions of active lithodynamics.