Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/1888
AuthorsZanella, E.* 
Lanza, R.* 
TitleRemanent and induced magnetization in the volcanites of Lipari and Vulcano (Aeolian Islands)
Issue DateNov-1994
Series/Report no.37/5 supl
URIhttp://hdl.handle.net/2122/1888
Keywordsmagnetizazion
susceptibility
blocking temperature
volcanites
Subject Classification04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous 
AbstractThe role of remanent and induced magnetization as sources of magnetic anomalies in the Lipari and Vulcano islands has been studied by systematic sampling. Remanent magnetization is higher than induced magnetization in almost all lithotypes. Its polarity is normal, and the mean directions are close to the present magnetic field. A slight thermal enhancement of the magnetic susceptibility occurs up to 450-500 °C, followed by a fall up to the Curie point, which is comprised in the range 550 ± 30 °C. This points to titanomagnetite as the main carrier of magnetization. The blocking temperature spectrum of the remanence ranges between the Curie point and 400 °C in most lithotypes, and falIs to 150-200 °C in the pyroclastic deposits. The results as a whole yield an outline of the areal distribution of the total magnetization intensity within the two islands.
Appears in Collections:Annals of Geophysics

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