%0 Journal Article
%T Sucesi¨®n de eventos y geometr¨ªa de la parte central del acu¨ªfero del graben de Villa de Reyes (San Luis Potos¨ª, M¨¦xico) inferida a partir de datos geoel¨¦ctricos
%A Ramos-Leal
%A Jos¨¦ Alfredo
%A L¨®pez-Loera
%A H¨¦ctor
%A Mart¨ªnez Ruiz
%A V¨ªctor Juli¨¢n
%A Aranda-G¨®mez
%A Jos¨¦ Jorge
%J Revista mexicana de ciencias geol¨®gicas
%D 2007
%I Universidad Nacional Aut¨®noma de M¨¦xico
%X the geometry of the aquifer of the villa de reyes graben (san luis potos¨ª, m¨¦xico) was inferred from the study of the underground electric properties in the la pila - jes¨²s mar¨ªa region. the results of 104 vertical electrical soundings (ves) were used to establish two georesistivity trends with n-s and ne-sw directions. the n-s trend is related to the san luis potos¨ª graben and the ne-sw trend to the villa de reyes graben. the basement of the continental basins in these tectonic depressions is formed by volcanic rocks with resistivities (¦Ñ) between 67 and >500 ¦Øm. the lower values are interpreted as fractured rocks containing water, and the higher values as dry, unfractured basement. the san luis potos¨ª and villa de reyes grabens are partially filled by upper cenozoic continental sediments. coarse-grained sediments, such as gravel and sand deposits, predominate in the southern portion of the studied area. these sediments have p values in the order of 21 to 35 ¦Øm. in the northern part of the area, the coarsest deposits are restricted to the borders of the basin and the fine-grained sediments such as silt and clay, with p values of 10 to21 ¦Øm- predominate toward the central part. three geoelectric pseudosections were prepared using apparent resistivity (¦Ña) values derived from the ves. on the basis of these pseudosections, a buried horst, probably related to the villa de reyes fault system, is inferred near the western border of the valley. the data derived from the pseudosections are also used to speculate about the tectonic events that led to the formation of the valley. it is proposed that the n-s trending san luis potos¨ª graben is older and was partially overprinted in the area by the ne-sw trending faults of the villa de reyes graben.
%K aquifer
%K geometry
%K vertical electric sounding
%K resistivity
%K graben
%K pseudosection
%K villa de reyes
%K san luis potos¨ª
%K mexico.
%U http://www.scielo.org.mx/scielo.php?script=sci_abstract&pid=S1026-87742007000100004&lng=en&nrm=iso&tlng=en