Journal Title
Title of Journal: Miner Petrol
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Abbravation: Mineralogy and Petrology
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Publisher
Springer Vienna
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Authors: Claudia Cannatelli
Publish Date: 2011/11/13
Volume: 104, Issue: 1-2, Pages: 29-42
Abstract
The magmatic evolution of two eruptive episodes at Campi Flegrei Italy has been investigated using phase equilibria modeling MELTS and data from melt inclusions MIs in phenocrysts from the Fondo Riccio and Minopoli 1 eruptions Assuming that isobaric fractional crystallization of a mantlederived parental magma is the dominant petrogenetic process major element evolution and corresponding changes in the physical and thermodynamic properties of the magma bodies from which Fondo Riccio and Minopoli1 magmas were erupted can be tracked Fondo Riccio parental magma was trachyandesitic approximated by the composition of FRC1O2M1 which evolved mainly through fractional crystallization at low pressure P ≈ 015 GPa ≈ 7 km depth along the QFM QFM + 1 oxygen buffer with an initial dissolved H2O content of ∼3 wt Minopoli1 parental magma was trachyandesitic approximated by the chemistry of Mi1C1O5M1 evolved through fractional crystallization at P ≈ 03 GPa ≈ 12 km depth with oxygen fugacity along QFM + 1buffer and initial H2O content of ∼ 2 wt The relationship between melt fraction and T reveals for Fondo Riccio the presence of a pseudoinvariant temperature at which the physical properties of melt change abruptly The net effect of these changes is to drive the system towards dynamic instability which it is suggested to be the trigger mechanism for the eruptions
Keywords:
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- Cervelleite, Ag 4 TeS: solution and description of the crystal structure
- An Early Cretaceous garnet pressure–temperature path recording synconvergent burial and exhumation from the hinterland of the Sevier orogenic belt, Albion Mountains, Idaho
- Fe-rich Li-bearing magnesionigerite-6 N 6 S from Xianghualing tin-polymetallic orefield, Hunan Province, P.R. China
- Crystal reaming during the assembly, maturation, and waning of an eleven-million-year crustal magma cycle: thermobarometry of the Aucanquilcha Volcanic Cluster
- Formation of corundum in metapelites around ultramafic bodies. An example from the Saualpe region, Eastern Alps
- Origin of phlogopite-orthopyroxene inclusions in chromites from the Merensky Reef of the Bushveld Complex, South Africa
- PGE mineralization in marginal sulfide ores of the Chineisky layered intrusion, Russia
- An empirical garnet (YAG) – xenotime thermometer
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- In situ Re–Os isotopic analysis of platinum-group minerals from the Mayarí-Cristal ophiolitic massif (Mayarí-Baracoa Ophiolitic Belt, eastern Cuba): implications for the origin of Os-isotope heterogeneities in podiform chromitites
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- Origin of eclogite and garnet pyroxenite from the Moldanubian Zone of the Bohemian Massif, Czech Republic and its implication to other mafic layers embedded in orogenic peridotites
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- The role of slab melting in the petrogenesis of high-Mg andesites: evidence from Simbo Volcano, Solomon Islands
- Evolution of the Taupo Volcanic Center, New Zealand: petrological and thermal constraints from the Omega dacite
- Multi-stage metasomatism of diamondiferous eclogite xenoliths from the Udachnaya kimberlite pipe, Yakutia, Siberia
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