Evidence of crustal melting events below the Island of Salina (Aeolian Atc, Southern Italy)

Quartz-rich xenoliths hosted in the basaltic-andesitic and andesitic lavas of Monte dei Porri, in the island of Salina, contain fluid and melt inclusions whose study makes it possible to trace back the magma ascent path of this volcano; moreover, they are a source of information about the anatectic processes that occurred under this island. The texture, mineralogy and whole-rock chemistry of these rocks exhibit the typical characteristics of a residual rock which went through several melt extraction events. The chemistry of melt inclusions hosted inside quartz grains (Si

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Sr and Nd isotopes were determined using new thermal ionisation mass spectrometry (TIMS) techniques for a suite of 21 olivine-hosted (85-92mol% Fo) melt inclusions selected from potassic and ultra-potassic lavas from the Italian peninsula. Sr isotopes were measured using default 1

Multiple subduction imprints in the mantle below Italy detected in a single lava flow

Post-collisional magmatism reflects the regional subduction history prior to collision but the link between the two is complex and often poorly understood. The collision of continents along a convergent plate boundary commonly marks the onset of a variety of transitional geodynamic processes. Typical responses include delamination of subducting lithosphere, crustal thickening in the overriding plate, slab detachment and asthenospheric upwelling, or the complete termination of convergence. A prominent example is the Western-Central Mediterranean, where the ongoing slow convergence of Africa and Europe (Eurasia) has been accommodated by a variety of spreading and subduction systems that dispersed remnants of subducted lithosphere into the mantle, creating a compositionally wide spectrum of magmatism. Using lead isotope compositions of a set of melt inclusions in magmatic olivine crystals we detect exceptional heterogeneity in the mantle domain below Central Italy, which we attribute to the presence of continental material, introduced initially by Alpine and subsequently by Apennine subduction. We show that superimposed subduction imprints of a mantle source can be tapped during a melting episode millions of years later, and are recorded in a single lava flow

A magmatic inclusions study: Carbonatitic magmatic component in post-collisional Neogene-Quaternary magmatism of Kapan (S-E Armenia, Lesser Caucasus)

Carbonatitic magmatic component in post-collisional Neogene-Quaternary magmatism of Kapan (S-E Armenia, Lesser Caucasus) A magmatic inclusion study. Abstract of Nederlands Aardwetenschappelijk Congres NAC VI, Veldhoven 200

Petrology of parental melts of Sao Miguel and Pico, Azores islands: Magmatic inclusions study

Petrology of parental melts of Sao Miguel and Pico, Azores islands: Magmatic inclusions study. Islands, 12th annual V.M. Goldschmidt Conference, Davos-2002, Switzerland, Geochem. Act