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http://hdl.handle.net/2122/1465
Authors: | Giudici, M.* Alfano, L.* |
Title: | Applicability of the dipole-dipole method for structural studies: examples from the Northern Apennines | Issue Date: | Aug-1998 | Series/Report no.: | 3/41 (1998) | URI: | http://hdl.handle.net/2122/1465 | Keywords: | Geoelectrical prospecting dipole-dipole DC sounding crustal exploration Northern Apennines |
Subject Classification: | 04. Solid Earth::04.02. Exploration geophysics::04.02.04. Magnetic and electrical methods 04. Solid Earth::04.03. Geodesy::04.03.09. Instruments and techniques |
Abstract: | We present some results of a geoelectrical investigation program conducted in the Northern Apennines, namely in the Val d'Aveto and Bobbio window and surrounding areas. Field activity included the execution of more than 50 vertical electrical soundings with continuous polar dipole-dipole spread. We image the geometries of some deep geological structures; in particular we found a resistive background, whose resistivity is different along the geoelectrical profiles. In our interpretation the resistive background consists of subligurid and tuscan units underlying the alloctone Ligurid units in the area surrounding the Val d'Aveto and Bobbio window. The resistive background was not found, at least at the same depths, toward north-east. Therefore, the geoelectrical survey revealed the position of the front of the subligurid and Tuscan nappes toward the plain for a depth of about one kilometer. |
Appears in Collections: | Annals of Geophysics |
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