New deep electrical resistivity tomography in the High Agri Valley basin (Basilicata, Southern Italy)

Abstract

The Agri Valley (Basilicata Region) is the most important area in Europe for onshore oil production. Moreover, the High Agri Valley extensional basin is among the Italian regions with the highest seismogenic potential. Therefore, the area is well investigated but even if deep data are available, the geometry of the pre-quaternary bedrock, the location of the main fault systems bordering the basin and the recent tectonic evolution of the basin are still debated. The aim of this work is to define the morphology of the pre-quaternary substrate below the valley, the thickness of the quaternary alluvial deposits and to contribute to the knowledge of the geological-structural characteristics of the basin of the High Agri Valley, by a new multichannel deep electrical resistivity tomography (DERT) data. The valley was previously characterized by DERT measurements crossing the valley, and now we present a new deep longitudinal acquisition. The new high-resolution electrical images allow us to improve previous reconstruction of the complex geometry of the basin and to highlight the irregular shape of the basin, bordered by shallow-depth faults and filled by Pleistocene alluvial deposits, with a more detailed scenario of fault-bounded blocks forming different depocentres separated by intrabasinal highs.

Volcano‐Tectonic Setting of the Pisciarelli Fumarole Field, Campi Flegrei Caldera, Southern Italy: Insights Into Fluid Circulation Patterns and Hazard Scenarios

“…ISAIA ET AL. Resistivity methods have been successfully applied to a wide variety of geological problems, including (1) hydrogeological and environmental problems (e.g., Kemna et al, 2002;Naudet et al, 2004), (2) the characterization of volcanoes and geothermal regions (Byrdina et al, 2014;Di Giuseppe, Troiano, Fedele, & Carlino, 2017;Di Giuseppe, Troiano, Di Vito, et al, 2017;Di Giuseppe, Troiano, Fedele, et al, 2015;Gresse et al, 2017;Tarchini et al, 2019;Troiano, Di Giuseppe, et al, 2014;Troiano, Isaia, et al, 2019;Troiano, Petrillo, et al, 2008), (3) the reconstruction of landslide structures (e.g., Lapenna et al, 2005;Lebourg et al, 2005), and (4) the localization and characterization of faults at shallow crustal levels (e.g., Caputo et al, 2003;Colella et al, 2004;Rizzo et al, 2004;Rizzo & Giampaolo, 2018;Suski et al, 2010 In the geoelectrical method, a primary electric current is injected into the ground between two source electrodes. This current induces an electric field between two or more measurement voltage electrodes.…”

Deep Electrical Resistivity Tomography for the Hydrogeological Setting of Muro Lucano Mounts Aquifer (Basilicata, Southern Italy)

“…The electrical resistivity tomography is largely applied in small-scale investigations to solve environmental and engineering problems. Recently, the improvements in the field technology and data processing allow us to apply this method 3 Geofluids in the large-scale investigations for geological structural studies [44,45,[48][49][50]. In order to define the best location for deep drilling exploration well for having a low ratio between the economic effort and water pumping capacity, a Deep Electrical Resistivity Tomography was carried out in the investigated area ( Figure 2).…”

“…Even if the Deep Electrical Resistivity Tomography (DERT) method is considered a geophysical approach for deep groundwater studies, it is not a common system for a deep hydrogeological target (>200 m). In fact, only few examples are reported in the literature [44][45][46][47][48][49][50][51][52].…”

Implementing Electrical Resistivity Tomography to Delineate Soil Contamination Zone, Southern Baqubah City, Iraq

“…Electrical resistivity tomography is one of the most effective geophysical methods used to image the subsurface using differences in measured electrical resistivity at the surface (Dahlin, 2001). For this reason, ERT is the bestknown geophysical technique in hydrogeological settings for groundwater description and monitoring (Rizzo & Valeria, 2019). Recently, the resistivity method is widely used around the world to monitor and assess possible contamination of groundwater and soils (Thabit & Khalid, 2016;Gemail et al, 2017;Giang et al, 2018;Nasir et al, 2021).…”