Istituto di Geoscienze e Georisorse     
Civetta L., Carluccio E., Innocenti F., Sbrana A., Taddeucci G. Magma chamber evolution under the Phlegrean Fields during the last 10 ka: trace element and isotop data. In: European Journal of Mineralogy, vol. 3 (2) pp. 415 - 428. Schweizerbart, 1991.
>During fhe past 10 ka, the producls of volcanic activity in the Phlegraean Fields have exhibited a compositional variation from trachybasalt to peralkaline phonolite, which is interpreted as resulting from differentiation dominated by crystal-liquid fractionation in a shallow magma chamber. Whole-rock ⁸⁷Sr/⁸⁶Sr data show a regular trend with the less differentiated rocks having the most radiogenic Sr. There is no systematic variation in Neodymium isotopes. The isotopic variations are considered to be the result of a pre-eruptive process in the magma chamber, which was affected in its deeper part by a combined process of crystal fractionation and fluid-magma interaction.
URL: http://www.schweizerbart.de/j/ejm/
Subject isotope geochemistry
trace elements
magma chamber
Phlegrean Fields

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