A. I. Surnin, I. V. Litvinova, D. S. Malkov, A. A. Shamanova, A. A. Kryazhev

Hydrodynamic and geothermal anomalies in the sedimentary cover cross-section reflect contemporary tectonic processes and are connected with active faults. They can be studied by petroleum-prospecting gydrogeochemistry methods aimed at identification of hydrogeochemical anomalies, which regularly bunch together as linear zones and clusters of deep fluid discharge, as areas of secondary hydrothermal transformation of rocks. The paper considers examples of ancient discharge, contemporary intraformational and surface hydrogeochemical anomalies in the south of the Siberian Platform. The results of the authors observations and sampling during key hydrogeological traverses along zones of tectonic boundary of the Cis-Sayan-Yenisei syneclise and its internal structures are discussed in the paper. The extended Map of ascending discharge occurrences is introduced. The research data and the map approve the wide extension of the ascending discharge within the south of the Lena-Tunguska petroleum province.

Key words: active faults, mineralised water, paleodischarge.