Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/1209
AuthorsAndriani, T.* 
Balia, R.* 
Loddo, M.* 
Pecorini, G.* 
Tramacere, A.* 
TitleStructural features of the Middle Tirso Valley (Central Sardinia - Italy) from geoelectrical and gravity data
Issue DateAug-2001
Series/Report no.44/4
URIhttp://hdl.handle.net/2122/1209
KeywordsGravity survey
geoelectrical soundings
sardinia
Subject Classification04. Solid Earth::04.02. Exploration geophysics::04.02.04. Magnetic and electrical methods 
04. Solid Earth::04.02. Exploration geophysics::04.02.05. Downhole, radioactivity, remote sensing, and other methods 
04. Solid Earth::04.04. Geology::04.04.09. Structural geology 
AbstractThe Middle Tirso Valley is located in Central Sardinia and lies between two structural highs, the Marghine-Goceano chain and the Barbagia Paleozoic horst. The geological structures of the area, potentially interesting for its geothermal resources, are rather complex and dominated by two regional faults – the Marghine fault and the Nuoro fault – which affect the Palaeozoic basement and the Tertiary volcano-sedimentary deposits. Combined modelling of gravity and geoelectrical data defines the shape and extent of this Tertiary basin. The Bouguer anomaly is mainly characterized by a three-dimensional gravity low which has been named «Bolotana-Sedilo gravity low», corresponding to a structure generated by collapses attributable to transcurrent and extensional tectonic events. The down faulted zone is filled with a Tertiary low density volcano-sedimentary sequence extending southwards and overlain by Pliocene-Quaternary basalts. Another regional structure named «Tirso Fault» is proposed
Appears in Collections:Annals of Geophysics

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