In the gamma rays profiles, the values of K and Th concentrations observed in the position of 50 m indicate
the presence of vertical fractures filled with clay minerals. On the other hand, in the position of 70 m of the Rn gas emanometry
profile, the peak of Rn emanation is five times higher than the regional level, indicating the presence of a vertical fracture zone,
clearly filled with fresh water in circulation. The geophysical characterization of the vertical fracture zones with fresh water
subsidized the drilling of a well for groundwater exploration in fractured aquifers, which was an important contribution for the
local community because the main sources of surface water are contaminated.
In the gamma rays profiles, the values of K and Th concentrations observed in the position of 50 m indicatethe presence of vertical fractures filled with clay minerals. On the other hand, in the position of 70 m of the Rn gas emanometryprofile, the peak of Rn emanation is five times higher than the regional level, indicating the presence of a vertical fracture zone,clearly filled with fresh water in circulation. The geophysical characterization of the vertical fracture zones with fresh watersubsidized the drilling of a well for groundwater exploration in fractured aquifers, which was an important contribution for thelocal community because the main sources of surface water are contaminated.
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