Open AccessIntegrated geophysical survey for the geological structural and hydrogeothermal study of the North-western Gargano promontory (Southern Italy)
Author(s) -
M. Loddo,
R. Quarto,
D. Schiavone
Publication year - 1996
Publication title -
annals of geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 60
eISSN - 2037-416X
pISSN - 1593-5213
DOI - 10.4401/ag-3962
Subject(s) - horst , geology , promontory , graben , geophysical survey , crust , tectonics , outcrop , exploration geophysics , geophysics , seismology , volcano , aeromagnetic survey , rift , caldera , geomorphology , physics , archaeology , quantum mechanics , magnetic field , history
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