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sector, we performed several electrical resistivity tomographies with different electrode spacing (5 and 10 m)
and using a multielectrode system with 32 electrodes. All tomographies were acquired with two different arrays,
the dipole-dipole and the Wenner-Schlumberger. We also tested the different sensitivity of the two arrays with respect
to the specific geological conditions and research goals. Detailed geological mapping and two boreholes were
used to calibrate the electrical stratigraphy. In all but one tomography (purposely performed off the fault trace), we
could recognise an abrupt subvertical lateral variation of the main sedimentary bodies showing the displacement
and sharp thickening of the two youngest alluvial bodies in the hanging-wall block. These features are interpreted
as evidence of synsedimentary activity of the Scorciabuoi Fault during Late Pleistocene and possibly as recently as
Holocene and allow accurate location of the fault trace within the Sauro alluvial plain.
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