The Proniatyn key section in the Podolian Upland contains layers of sediment from different time periods, including the Middle and Upper Pleistocene. The sediments show distinct layers of loess and fossil soils, with artifacts from the Middle Palaeolithic period found in some layers. The characteristics of these sediments are similar to other sections in the area, indicating a shared geological history. The key section is important for understanding the Pleistocene era in the region and serves as a reference point for studying the past.