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Authors: Capuano, P.*
Florio, G.*
Gasparini, P.*
Title: Structural model of the Northern Latium volcanic area constrained by MT, gravity and aeromagnetic data
Issue Date: Oct-1997
Series/Report no.: 40/5
Keywords: Magnetotelluric sounding
gravity aeromagnetic
Abstract: The results of about 120 magnetotelluric soundings carried out in the Vulsini, Vico and Sabatini volcanic areas were modeled along with Bouguer and aeromagnetic anomalies to reconstruct a model of the structure of the shallow (less than 5 km of depth) crust. The interpretations were constrained by the information gathered from the deep boreholes drilled for geothermal exploration. MT and aeromagnetic anomalies allow the depth to the top of the sedimentary basement and the thickness of the volcanic layer to be inferred. Gravity anomalies are strongly affected by the variations of morphology of the top of the sedimentary basement, consisting of a Tertiary flysch, and of the interface with the underlying Mesozoic carbonates. Gravity data have also been used to extrapolate the thickness of the neogenic unit indicated by some boreholes. There is no evidence for other important density and susceptibility heterogeneities and deeper sources of magnetic and/or gravity anomalies in all the surveyed area.
Appears in Collections:04.08.99. General or miscellaneous
04.02.02. Gravity methods
04.02.04. Magnetic and electrical methods
Annals of Geophysics

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