HR: 1400h
AN: GS23B-03    [Abstracts]
TI: NATURAL RADIATION FOR IDENTIFICATION AND EVALUATION OF RISK ZONES FOR AFFECTATION OF ACTIVATED FAULTS IN AQUIFER OVEREXPLOITED.
AU: * RAMOS-LEAL, J
EM: jalfredo@ipicyt.edu.mx
AF: UGM, CAMINO A LA PRESA SAN JOSE 2055, SAN LUIS POTOSI, SLP 78216, Mexico
AU: LOPEZ-LOERA, H
EM: hlopezl@ipicyt.edu.mx
AF: UGM, CAMINO A LA PRESA SAN JOSE 2055, SAN LUIS POTOSI, SLP 78216, Mexico
AU: CARBAJAL-PEREZ, N
EM: noelc@ipicyt.edu.mx
AF: UGM, CAMINO A LA PRESA SAN JOSE 2055, SAN LUIS POTOSI, SLP 78216, Mexico
AB: In basins as Mexico, Michoacán, Guanajuato, Queretaro, Aguascalientes and San Luis Potosi, the existence of faults and fractures have affected the urban infrastructure, lines of conduction of drinkable water, pipelines, etc., that when not being identified and considered, they don't reflect the real impact that these cause also to the aquifer system, modifying the permeability of the means and in occasions they work as preferential conduits that communicate hydraulically potentially to the aquifer with substances pollutants (metals, fertilizers, hydrocarbons, waste waters, etc.) located in the surface. In the Valley of San Luis Potosi, Villa of Reyes, Arista, Ahualulco and recently The Huizache-Matehuala is being strongly affected by faulting and supposedly due cracking to subsidence, however, the regional tectonic could also be the origin of this phenomenon. To know the origin of the faults and affectation to the vulnerability of the aquifer few works they have been carried out in the area. A preliminary analysis indicates that it is possible that a tectonic component is affecting the area and that the vulnerability of the aquifer in that area you this increasing. Before such a situation, it is necessary to carry out the isotopic study of the same one, for this way to know among other things, isotopic characterization, recharge places and addresses of flow of the groundwater; quality of waters and the behavior hydrochemistry with relationship to the faults. High radon values were measured in San Luis Potosi Valley, the natural source of radon could be the riolites and however, these are located to almost a once thousand meters deep for what the migration of the gas is not very probable. The anomalies radiometrics was not correlation with the faults in this case. In some areas like the Valley of Celaya, the origin of the structures and the tectonic activity in the area was confirmed, identifying the structural arrangement of the faulting, the space relationships of the fault trend and evolution and elevation of the piezometric level in the aquifer, detecting high values of Radon-222, anomalies of radiation gamma and the presence of grooves in the basalts. Anomalies of radiation gamma were detected in the shears area. The profile of the anomalies of radiation gamma evidences and it confirms the high fracturing grade and permeability in the shears area.
UR: http:www.ipicyt.edu.mx
DE: 0932 Radioactivity methods
DE: 3359 Radiative processes
DE: 3690 Field relationships (1090, 8486)
DE: 8010 Fractures and faults
SC: Geochemical Society [GS]
MN: 2007 Joint Assembly