The aim of the work is to present the results of a ground-based study of the erosion-accumulative soil cover pattern of a key area and to assess the information content of multi-temporal remote sensing data of the bare soil surface for its identification and mapping in the zone of distribution of dark chestnut soils (Kastanozems). The study area is located on the Millerovo-Morozovskaya inclined plain within the Don-Donetsk hilly-ridge plain in the Oblivsky district of the Rostov region. The soil cover of the key area is represented by a combination of different variations of low-contrast soils on convex and concave surfaces within an elongated ridge and its slopes, including agro-dark chestnut solonetzic and non-solonetzic soils, agrozems (eroded soils that have lost the xerometamorphic horizon), stratozems (heavily delivered soils). The formation of the soil cover pattern is determined by a combination of mesorelief forms and two types of parent material. The C coefficient map of the multi-temporal soil line reveals the heterogeneity of the soil cover due to erosion-accumulative processes. In study area, three contrasting soil combinations are confidently distinguished in the form of different variations and combination-variations, forming a kind of framework of the soil cover pattern. Soil combinations of eroded and delivered soils located between the above three groups of soil combinations are significantly different from their neighbors, but their interpretation has increased uncertainty.