The paper describes magnetotelluric investigations of geothermal resources, which we subdivide into hydrothermal and petrothermal. Hydrothermal resources are typical for active tectonic zones and are exploited for a long time, while magnetotellurics is widely used for their exploration. We constructed a typical resistivity model of a hydrothermal zone and, using synthetic data, evaluated the possibilities of data interpretation methods. Petrothermal resources are related with heat content of crustal rocks and their thermal potential is hundred times bigger than that of hydrothermal resources. However, for their extraction deep drilling is required, especially in stable tectonic continental regions. We consider the prospects of magnetotelluric for regional prognosis of petrothermal resources, as well as for detailed exploration and monitoring of deep heated reservoirs.......

The article presents a synthesis of MT sounding data received within the Chuya and Kurai basins and their mountain frame. Geological interpretation of the MT soundings inversion results is based on the modern study of the Altai morphotectonics, including the characteristics of mountain structures formation and areas of their catenation with Chuya and Kurai basins. In our research, we used geomorphological, geophysical and geological indicators of the latest activation.......

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The modern criteria and wide possibilities of in-field quality control of 3D land seismic data have been described. The approaches to in-field QC are changing at new technological level of 3D land seismic characterized with single-source and singlesensor acquisition, high density, high productivity, and (almost) continuous data recording. It has been shown that in-field QC in mega-crews should inevitably transform from visual and quantitative estimation of raw data to verification of the specifications and field techniques selected by the Client. And the quality of seismic surveys should be estimated on the final results of data processing and interpretation.......

Data on a deep structure of a though European-African tectonic belt are provided. The comparative characteristic of tectonics and features of geophysical anomalies of this belt within East - European and Afrikano - the Arabian platform is given.......