Abstract
The paper shows that isoresistivity contours for different depths, drawn from interpreted resistivity values, can indicate the location of underground lineaments. A comparison of the surface lineament map with the maps of isoresistivity contours for different depths shows that many of the underground lineaments recognised through the resistivity studies have surface expressions as lineaments. The underground lineaments allow large-scale migration of groundwater and can be used as sites for the artificial recharging of aquifers. It is concluded that the maps prepared from interpreted resistivity values derived by curve matching can give a better picture of the underground structures than the conventional maps prepared from apparent resistivity values.
Résumé
L’article montre que des courbes d’isorésistivité établies pour différentes profondeurs à partir de l’analyse de données de résistivité, peuvent indiquer la localisation de linéaments profonds. Une comparaison d’une carte de linéaments de surface avec une carte d’isorésistivité pour différentes profondeurs montre que beaucoup des linéaments profonds reconnus par les études de résistivité correspondent à des linéaments identifiés en surface. Les linéaments profonds sont à l’origine d’écoulements souterrains à grande échelle et peuvent être utilisés comme sites de recharge artificielle des aquifères. On peut conclure que les cartes obtenues après analyse de valeurs de résistivité peuvent donner une meilleure image des structures profondes que les cartes conventionnelles obtenues à partir de valeurs de résistivité apparentes.
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The author is grateful to Mangalore University for awarding the university doctoral research fellowship.
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Reghunath, R., Murthy, T.R.S. & Shankar, H.N.U. Delineation of concealed lineaments using interpreted resistivity values. Bull Eng Geol Environ 64, 209–215 (2005). https://doi.org/10.1007/s10064-005-0274-9
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DOI: https://doi.org/10.1007/s10064-005-0274-9