Journal Title
Title of Journal: Contrib Mineral Petrol
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Abbravation: Contributions to Mineralogy and Petrology
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Publisher
Springer-Verlag
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Authors: Corrado Di Martino Francesca Forni Maria Luce Frezzotti Rosaria Palmeri James D Webster Robert A Ayuso Federico Lucchi Claudio A Tranne
Publish Date: 2011/04/27
Volume: 162, Issue: 5, Pages: 1011-1030
Abstract
Cordieritebearing lavas CBL~105 ka erupted from the Mt S Angelo volcano at Lipari Aeolian arc Italy are highK andesites displaying a range in the geochemical and isotopic compositions that reflect heterogeneity in the source and/or processes CBL consist of megacrysts of Caplagioclase and clinopyroxene euhedral crystals of cordierite and garnet microphenocrysts of orthopyroxene and plagioclase set in a heterogeneous rhyodaciticrhyolitic groundmass containing abundant metamorphic and gabbroic xenoliths New petrographic chemical and isotopic data indicate formation of CBL by mixing of basalticandesitic magmas and highK peraluminous rhyolitic magmas of anatectic origin and characterize partial melting processes in the lower continental crust of Lipari Crustal anatectic melts generated through two main dehydrationmelting peritectic reactions of metasedimentary rocks 1 Biotite + Aluminosilicate + Quartz + Albite = Garnet + Cordierite + Kfeldspar + Melt 2 Biotite + Garnet + Quartz = Orthopyroxene + Cordierite + Kfeldspar + Melt Their position into the petrogenetic grid suggests that heating and consequent melting of metasedimentary rocks occurred at temperatures of 725 T 900°C and pressures of 04–045 GPa Anatexis in the lower crust of Lipari was induced by protracted emplacement of basic magmas in the lower crust ~130 Ky Crustal melting of the lower crust at 105 ka affected the volcano evolution impeding frequent maficmagma eruptions and promoting magma stagnation and fractional crystallization processesWe are grateful for constructive and helpful comments from two anonymous reviewers as well as editorial comments from J Touret which greatly improved the paper M Serracino is thanked for assistance with electron microprobe analysis at IGAGCNR Raman analyses were supported by PNRA
Keywords:
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Other Papers In This Journal:
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- An Early Cretaceous garnet pressure–temperature path recording synconvergent burial and exhumation from the hinterland of the Sevier orogenic belt, Albion Mountains, Idaho
- Crystal reaming during the assembly, maturation, and waning of an eleven-million-year crustal magma cycle: thermobarometry of the Aucanquilcha Volcanic Cluster
- Origin of phlogopite-orthopyroxene inclusions in chromites from the Merensky Reef of the Bushveld Complex, South Africa
- An empirical garnet (YAG) – xenotime thermometer
- Magma storage and mixing conditions for the 1953–1974 eruptions of Southwest Trident volcano, Katmai National Park, Alaska
- 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
- Reply to comments by Sengupta, Raith and Dasgupta on S. B. Bhattacharya and R. K. Kar (2002)
- Trace element mapping by LA-ICP-MS: assessing geochemical mobility in garnet
- Metasomatized lithospheric mantle beneath Turkana depression in southern Ethiopia (the East Africa Rift): geochemical and Sr–Nd–Pb isotopic characteristics
- In situ observations of bubble growth in basaltic, andesitic and rhyodacitic melts
- NanoSIMS mapping and LA-ICP-MS chemical and U–Th–Pb data in monazite from a xenolith enclosed in andesite (Central Slovakia Volcanic Field)
- Phosphorus-controlled trace element distribution in zircon revealed by NanoSIMS
- Hydroxyl in olivines from mantle xenoliths in kimberlites of the Siberian platform
- Electrical conductivity of orthopyroxene and plagioclase in the lower crust
- Chromite in komatiites: 3D morphologies with implications for crystallization mechanisms
- In situ Sr isotopic analyses of epidote: tracing the sources of multi-stage fluids in ultrahigh-pressure eclogite (Ganghe, Dabie terrane)
- Source components of the Gran Canaria (Canary Islands) shield stage magmas: evidence from olivine composition and Sr–Nd–Pb isotopes
- The stability and origin of sodicgedrite in ultrahigh-temperature Mg-Al granulites: a case study from the Gondwana suture in southern India
- Plagioclase in the Skaergaard intrusion. Part 1: Core and rim compositions in the layered series
- The Campanian Ignimbrite (southern Italy) geochemical zoning: insight on the generation of a super-eruption from catastrophic differentiation and fast withdrawal
- Melting of clinopyroxene + magnesite in iron-bearing planetary mantles and implications for the Earth and Mars
- Immiscible separation of metalliferous Fe/ Ti-oxide melts from fractionating alkali basalt: P - T - f O2 conditions and two-liquid elemental partitioning
- Experimental calibration of a garnet–clinopyroxene geobarometer for mantle eclogites
- A case for hornblende dominated fractionation of arc magmas: the Chelan Complex (Washington Cascades)
- Melting phase relations of a mica–clinopyroxenite from the Milk River area, southern Alberta, Canada
- Shoshonite and sub-alkaline magmas from an ultrapotassic volcano: Sr–Nd–Pb isotope data on the Roccamonfina volcanic rocks, Roman Magmatic Province, Southern Italy
- 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
- Hercynian, Pan-African, Proterozoic and Archean ion-microprobe zircon ages for a Betic-Rif core complex, Alpine belt, W Mediterranean – consequences for its P - T - t path
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