The Measurements of Seismoacoustic Emission and Helium Concentrations in Boreholes within Tectonic Zones

Measurements of seismoacoustic emission (SAE) of rocks in borehole allow to receive essentially new information about modem dynamic processes in geological medium. Zones of rocks<br>breaking and jointing are as a rule marked by anomalous level of SAE amplitudes. Dynamically active tectonic fractures in space around a borehole are also distinguished by the same SAE<br>anomalies. Inereased helium concentra tion in subsurface water is connected with disjunctive disturbances in the Earth’s crust, especially with deep faults. In this case there are marked only perme able disturbances, along which filtration of subsurface water may take place. Measurements of SAE and helium con centrations in boreholes of the Urals and Northem Kazakhstan are used to study the tectonic of ore fields. Interpretation of measurements of SAE and helium concentrations aflows to characterize a tectonic disturbance according to its dynamic activity and its permeability.