Quasi-three-dimensional modelling of the Jurassic-Cretaceous sediments hydrogeochemical conditions in the central part of the West Siberian megabasin

摘要

This paper presents the method and results of the hydrogeochemical spatial pattern modelling in the Cretaceous and Jurassic sediments of the Koltogor and Tolkin megatroughs and the surrounding areas of the West Siberian megabasin. The method is based on the preliminary calculation of two-dimensional radial profiles that provide the assessment of hydrogeochemical parameter changes with depth at the given points set within the study area. Using the results of the calculations, a model of hydrogeochemical conditions is constructed as a series of maps of the groundwater salinity in Formations, as well as NS and EW oriented cross-sections. The method is relatively simple, reliable and ensures result consistency.