A petrographicandradiometricstudy,alongwithstatisticalmultivariateanalysisofvolcanicproductsof the islandofLipari(Aeolianislands,Italy)wascarriedout.ThevolcanologicalhistoryofLipariwas reconstructed defining twostages(pre-andpost-erosivestages)furtheronsubdividedinfourvolcanic phases,eachofwhichcharacterizedbyproductswithaparticularchemicalcompositionandseparated by stratigraphicunconformities.Thecorrelationsbetweenpetrographicfeatures,determinedbyX-ray fluorescence, andvolcanologicalhistoryoftheislandhighlightagradualdifferentiationwithyounger rocksshowingamoreacidchemicalcompositionthantheolderones.Radiometricfeatures,andin particularthecontentofprimordialradionuclides 238U, 232Th and 40K,havebeenmeasuredthrough gamma-rayspectrometrywithhyper-puregermaniumdetector. Thedifferentvolcaniclithologies,suchasbasalts,andesitesandrhyolites,havebeencharacterizedby petrographicdiagrams.Thecalculateddoseratehasalsobeenusedasanadditionalclassificationparameter. Olderproductsshowlowalkalicontentthantheyoungerones.Thisisrelatedwiththeincreasingof incompatibleelements,suchasuraniumandthorium,intheyoungerproducts. Principalcomponentsandhierarchicalclusteringstatisticalanalyseshaveprovidedadditionalinfor- mation onsampledifferentiationandsimilarities.

Lanzo, G., Basile, S., Brai, M., Rizzo, S. (2010). Volcanic products of Lipari (Aeolian islands, Italy): Multivariate analysis of petrographic and radiometric data. RADIATION MEASUREMENTS(45), 816-822 [10.1016/j.radmeas.2010.04.003].

Volcanic products of Lipari (Aeolian islands, Italy): Multivariate analysis of petrographic and radiometric data

LANZO, Giovanni;BASILE, Salvatore;BRAI, Maria;RIZZO, Salvatore
2010-01-01

Abstract

A petrographicandradiometricstudy,alongwithstatisticalmultivariateanalysisofvolcanicproductsof the islandofLipari(Aeolianislands,Italy)wascarriedout.ThevolcanologicalhistoryofLipariwas reconstructed defining twostages(pre-andpost-erosivestages)furtheronsubdividedinfourvolcanic phases,eachofwhichcharacterizedbyproductswithaparticularchemicalcompositionandseparated by stratigraphicunconformities.Thecorrelationsbetweenpetrographicfeatures,determinedbyX-ray fluorescence, andvolcanologicalhistoryoftheislandhighlightagradualdifferentiationwithyounger rocksshowingamoreacidchemicalcompositionthantheolderones.Radiometricfeatures,andin particularthecontentofprimordialradionuclides 238U, 232Th and 40K,havebeenmeasuredthrough gamma-rayspectrometrywithhyper-puregermaniumdetector. Thedifferentvolcaniclithologies,suchasbasalts,andesitesandrhyolites,havebeencharacterizedby petrographicdiagrams.Thecalculateddoseratehasalsobeenusedasanadditionalclassificationparameter. Olderproductsshowlowalkalicontentthantheyoungerones.Thisisrelatedwiththeincreasingof incompatibleelements,suchasuraniumandthorium,intheyoungerproducts. Principalcomponentsandhierarchicalclusteringstatisticalanalyseshaveprovidedadditionalinfor- mation onsampledifferentiationandsimilarities.
2010
Lanzo, G., Basile, S., Brai, M., Rizzo, S. (2010). Volcanic products of Lipari (Aeolian islands, Italy): Multivariate analysis of petrographic and radiometric data. RADIATION MEASUREMENTS(45), 816-822 [10.1016/j.radmeas.2010.04.003].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/50464
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