Fossil soils as the objective indicator of paleogeografic medium variability

The soil, being the natural-historical body which isn't adapting to the changing environment, but keeping in its profile signs of these changes, can be considered as one of the best objects for research the trends of paleogeographic medium development in natural cycles of biosphere development. Identification of signs of the concrete fossil soils characterizing local changes of natural processes, allows to detail the long-term process of modern biosphere long polycyclic formation.