GEOLOGICAL MODEL OF THE TERRITORY OF THE CHUVASH REPUBLIC ON THE BASIS OF EVOLUTIONARY (PALАEOGEOGRAPHIC) RECONSTRUCTION

Author(s):  T.M. Rakhimov, Chuvash State University, Cheboksary, Russia, rakhimovuser@gmail.com

Inna V. Nikonorova, candidate of Sciences, associate Professor, Chuvash State University, Cheboksary, Russia, head of the Depart-ment of physical geography and geomorphology

Issue:  Volume 42, №1

Rubric:  Earth sciences

Annotation:  This article critically analyzes the geological model of the territory of Chuvashia. The main stages of geological development were studied and three structural floors were identified. The new model includes an intermediate complex between the crystalline base and the sedimentary cover. The data of deep drilling and the results of regional seismic exploration in the territory were used. A change in the palaeogeographic conditions of sedimentation is traced. Numerous (continuous) changes in the cycles of transgressions and regressions have been identified. This is due to differentiated tectonic movements. Discontinuous tectonics are reflected in the modern relief. Coevolution (coherence) of the geological and geographical environment makes it possible to assess the potential of mineral resources. The prospects of hydrocarbon raw materials (oil) are estimated. The main block of subsoil use is determined by non-metals. Underground waters are distributed unevenly because of hydrogeological conditions. Geoecological problems of subsoil use at the present stage are considered.

Keywords:  geological model, paleotectonics, paleogeography, forecast, reconstruction, co-evolution, Chuvashia

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