Options
Quarto, R.
Loading...
Preferred name
Quarto, R.
Main Affiliation
2 results
Now showing 1 - 2 of 2
- PublicationOpen AccessIntegrated geophysical survey for the geological structural and hydrogeothermal study of the North-western Gargano promontory (Southern Italy)(1996-01)
; ; ; ;Loddo, M.; Dipartimento di Geologia e Geofisica, Università di Bari, Italy ;Quarto, R.; Dipartimento di Geologia e Geofisica, Università di Bari, Italy ;Schiavone, D.; Dipartimento di Geologia e Geofisica, Università di Bari, Italy; ; A multimethodological geophysical survey was performed in the north-western part of the Gargano promontory to study the geological structural setting and the underground fluid flow characteristics. The area has a complex tectonics with some magmatic outcrops and shallow low-enthalpy waters. Electrical, seismic reflection, gravimetric and magnetic surveys were carried out to reconstruct the geological structures; and in order to delineate the hydrogeothermal characteristics of the area, the self-potential survey was mainly used. Moreover magnetic and self-potential measurements were also performed in the Lesina lake. The joint three-dimensional interpretation of the geophysical data disclosed a large horst and graben structure covering a large part of the area. In the central part of the horst a large ramified volcanic body was modelled. The models show some intrusions rising from it to or near to the surface. The main structures are well deep-seated in the Crust and along them deep warm fluids rise as the SP data interpretation indicates.194 680 - PublicationRestrictedActive upper crust deformation pattern along the southern edge of the Tyrrhenian subduction zone (NE Sicily): Insights from a multidisciplinary approach(2015-07-17)
; ; ; ; ; ; ; ; ;Palano, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Schiavone, D.; Dipartimento di Scienze della Terra e Geoambientali, Università di Bari, Bari, Italy ;Loddo, M.; Dipartimento di Fisica e di Scienze della Terra, Università di Messina, Messina, Italy ;Neri, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Presti, C.; Dipartimento di Fisica e di Scienze della Terra, Università di Messina, Messina, Italy ;Quarto, R.; Dipartimento di Scienze della Terra e Geoambientali, Università di Bari, Bari, Italy ;Todaro, C.; Dipartimento di Fisica e di Scienze della Terra, Università di Messina, Messina, Italy ;Neri, G.; Dipartimento di Fisica e di Scienze della Terra, Università di Messina, Messina, Italy; ; ; ; ; ; ; Using a multidisciplinary dataset based on gravimetric, seismic, geodetic and geological observations,we provide an improved picture of the shallow structure and dynamics of the southern edge of the Tyrrhenian subduction zone.With a local earthquake tomographywe clearly identify twomain crustal domains in the upper 15 kmcharacterized by different P-wave velocity values: a high-velocity domain comprising southeasternmost Tyrrhenian Sea, NE Sicily and Messina Straits, and a low-velocity domain comprising Mt. Etna and eastern Sicily. The transition between the two domains shows a good spatial correspondence with a wider set of faults including the Taormina Fault System (TFS) and the Aeolian–Tindari–Letojanni Fault System (ATLFS), two nearly SE-striking fault systems crossing northeastern Sicily and ending on the Ionian shoreline of Sicily according to many investigators. Within this set of faults, most of the deformation/seismicity occurs along the northern and central segments of ATLFS, compared to lowactivity along TFS. A lack of seismicity (both recent and historical) is observed in the southern sector of ATLFS where, however, geodetic data reveal significant deformation. Ourmultidisciplinary dataset including offshore observations suggests the southeastward continuation of the ATLFS into the Ionian Sea until joiningwith the faults cutting the Ionian accretionarywedge described in the recent literature. Our findings imply the existence of a highly segmented crustal shear zone extending from the Aeolian Islands to the Ionian Abyssal plain, that we believe plays the role of accommodating differential motion between the Southern Tyrrhenian unit and the western compressional domain of Sicily. The ATLFS, which is a main part of the inferred shear zone, behaves similarly to what often observed at the edges of retreating subduction357 81