Academic literature on the topic 'Ivrea-Verbano'

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Journal articles on the topic "Ivrea-Verbano"

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Pistone, Mattia, Othmar Müntener, Luca Ziberna, György Hetényi, and Alberto Zanetti. "Report on the ICDP workshop DIVE (Drilling the Ivrea–Verbano zonE)." Scientific Drilling 23 (November 30, 2017): 47–56. http://dx.doi.org/10.5194/sd-23-47-2017.

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Abstract. The Ivrea–Verbano Zone is the most complete, time-integrated crust–upper mantle archive in the world. It is a unique target for assembling data on the deep crust and the Moho transition zone and testing several hypotheses of formation, evolution, and modification of the continental crust through space and time across the Earth. The ICDP workshop Drilling the Ivrea–Verbano zonE (DIVE), held in Baveno, Italy, from 1 to 5 May 2017, focused on the scientific objectives and the technical aspects of drilling and sampling in the Ivrea–Verbano Zone at depth. A total of 47 participants from 9 countries with a wide variety of scientific and/or drilling expertise attended the meeting. Discussion on the proposed targets sharpened the main research lines and led to working groups and the necessary technical details to compile the full drilling proposal. The participants of the workshop concluded that four drilling operations in the Val Sesia and Val d'Ossola crustal sections represent the scientifically most promising solution to achieve the major goals within DIVE to unravel the physico-chemical properties and architecture of the lower continental crust towards the crust–mantle (Moho) transition zone.
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Barboza, Scott A., and George W. Bergantz. "Dynamic model of dehydration melting motivated by a natural analogue: applications to the Ivrea–Verbano zone, northern Italy." Earth and Environmental Science Transactions of the Royal Society of Edinburgh 87, no. 1-2 (1996): 23–31. http://dx.doi.org/10.1017/s0263593300006441.

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ABSTRACT:Dehydration melting of crustal rocks may commonly occur in response to the intrusion of mafic magma in the mid- or lower crust. However, the relative importance of melt buoyancy, shear or dyking in melt generation and extraction under geologically relevant conditions is not well understood. A numerical model of the partial melting of a metapelite is presented and the model results are compared with the Ivrea-Verbano Zone in northern Italy. The numerical model uses the mixture theory approach to modelling simultaneous convection and phase change and includes special ramping and switching functions to accommodate the rheology of crystal-melt mixtures in accordance with the results of deformation experiments. The model explicitly includes both porous media flow and thermally and compositionally driven bulk convection of a restitecharged melt mass. A range of melt viscosity and critical melt fraction models is considered. General agreement was found between predicted positions of isopleths and those from the Ivrea-Verbano Zone. Maximum melt velocities in the region of porous flow are found to be 1 × 10−7 and 1 × 10−1m per year in the region of viscous flow. The results indicate that melt buoyancy alone may not be a sufficient agent for melt extraction and that extensive, vigorous convection of partially molten rocks above mafic bodies is unlikely, in accord with direct geological examples.
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Quartieri, Simona, Gilberto Artioli, Antonio Deriu, Pier Paolo Lottici, and Gianni Antonioli. "57Fe-Mössbauer investigation on garnets from the Ivrea-Verbano Zone." Mineralogical Magazine 57, no. 389 (December 1993): 671–76. http://dx.doi.org/10.1180/minmag.1993.057.389.11.

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AbstractA Mössbauer investigation has been carried out on garnets from the Ivrea-Verbano zone and the results are compared with those obtained on the same samples by X-ray absorption spectroscopy (XAS). The problem addressed is the precise structural characterisation of the local environment of iron in garnets with Fe/Ca ratio variable between ∼3.0 and ∼18.0. Ferric iron is octahedrally coordinated and ferrous iron is in the dodecahedral site in all the samples. Mössbauer results are in agreement with those obtained by XAS and show that, at least in the compositional range of the garnets examined (0.1-0.5 calcium atoms p.f.u.), the iron environment is not significantly modified by the larger calcium cations sharing the same dodecahedral site. It is confirmed that the Mössbauer technique is more sensitive than XAS in detecting low percentages of iron, especially when the cation is present in more than one oxidation state and coordination number.
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Sinigoi, Silvano, James E. Quick, Adriano Mayer, and Gabriella Demarchi. "Density-controlled assimilation of underplated crust, Ivrea-Verbano zone, Italy." Earth and Planetary Science Letters 129, no. 1-4 (January 1995): 183–91. http://dx.doi.org/10.1016/0012-821x(94)00230-v.

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Antonicelli, Marta, Riccardo Tribuzio, Tong Liu, and Fu-Yuan Wu. "Contaminating melt flow in magmatic peridotites from the lower continental crust (Rocca d'Argimonia sequence, Ivrea–Verbano Zone)." European Journal of Mineralogy 32, no. 6 (November 4, 2020): 587–612. http://dx.doi.org/10.5194/ejm-32-587-2020.

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Abstract. The lower continental crust section of the Ivrea–Verbano Zone (Italian Alps) was intruded by a ∼ 8 km thick gabbroic–dioritic body (Ivrea Mafic Complex) in the Upper Carboniferous–Lower Permian, in conjunction with the post-collisional transtensional regime related to the Variscan orogeny. In the deepest levels of the Ivrea Mafic Complex, several peridotite–pyroxenite sequences considered of magmatic origin are exposed. We present here a petrological–geochemical investigation of the peridotites from the largest magmatic ultramafic sequence of the Ivrea Mafic Complex, locally called Rocca d'Argimonia. In spite of the widespread subsolidus re-equilibration under granulite facies conditions, most likely reflecting a slow cooling evolution in the lower continental crust, the Rocca d'Argimonia peridotites (dunites to harzburgites and minor clinopyroxene-poor lherzolites) typically retain structures and microstructures of magmatic origin. In particular, the harzburgites and the lherzolites typically show poikilitic orthopyroxenes enclosing partially dissolved olivine and minor spinel. Olivine has forsterite proportion diminishing from the dunites to the harzburgites and the lherzolites (90 mol % to 85 mol %) and negatively correlating with δ18O (+5.8 ‰ to +6.6 ‰). Gabbronorite dykes locally crosscut the peridotites and show millimetre-scale thick, orthopyroxenite to websterite reaction zones along the contact with host rocks. We propose that the Rocca d'Argimonia peridotites record a process of reactive melt flow through a melt-poor olivine-rich crystal mush or a pre-existing dunite. This process was most likely responsible for the olivine dissolution shown by the poikilitic orthopyroxenes in the harzburgites–lherzolites. We infer that the reactively migrating melts possessed a substantial crustal component and operated at least at the scale of ∼ 100 m.
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Obata, Masaaki, and Shun-ichiro Karato. "Ultramafic pseudotachylite from the Balmuccia peridotite, Ivrea-Verbano zone, northern Italy." Tectonophysics 242, no. 3-4 (February 1995): 313–28. http://dx.doi.org/10.1016/0040-1951(94)00228-2.

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Quick, James E., Silvano Sinigoi, Luisa Negrini, Gabriella Demarchi, and Adriano Mayer. "Synmagmatic deformation in the underplated igneous complex of the Ivrea-Verbano zone." Geology 20, no. 7 (1992): 613. http://dx.doi.org/10.1130/0091-7613(1992)020<0613:sditui>2.3.co;2.

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Techmer, Kirsten S., Hans Ahrendt, and Klaus Weber. "The development of pseudotachylyte in the Ivrea—Verbano Zone of the Italian Alps." Tectonophysics 204, no. 3-4 (April 1992): 307–22. http://dx.doi.org/10.1016/0040-1951(92)90314-v.

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Förster, H. J., and D. E. Harlov. "Monazite-(Ce)-huttonite solid solutions in granulite-facies metabasites from the Ivrea-Verbano Zone, Italy." Mineralogical Magazine 63, no. 4 (August 1999): 587–94. http://dx.doi.org/10.1180/minmag.1999.063.4.11.

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AbstractComposite populations of monazite-group minerals of both metamorphic and metasomatic origin have been discovered in thin layers of granulite-facies metabasites interlayered with metapelites, located in the Val Strona di Omegna region of the Ivrea-Verbano Zone, Italy. In addition to monazite-(Ce), which is uncommonly poor in Th and is probably formed by incongruent dissolution of apatite, these populations include members of the monazite-huttonite series. The latter minerals contain between 13 and 30.1 mol.% ThSiO4 [= huttonitic monazite-(Ce)], and are known from only half a dozen other occurrences worldwide. We propose that breakdown of primary monazite-(Ce) in the metapelites during granulite-facies metamorphism mobilized Th and the REEs, which were then transported by high-grade metamorphic fluids into the metabasite layers to form the Th-rich minerals of the monazite-huttonite series.
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Quick, James E., Silvano Sinigoi, and Adriano Mayer. "Emplacement of mantle peridotite in the lower continental crust, Ivrea-Verbano zone, northwest Italy." Geology 23, no. 8 (1995): 739. http://dx.doi.org/10.1130/0091-7613(1995)023<0739:eompit>2.3.co;2.

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Dissertations / Theses on the topic "Ivrea-Verbano"

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Sbisa', Andrea. "Structure and eruptive history of the Sesia caldera, North West Italy." Doctoral thesis, Università degli studi di Trieste, 2011. http://hdl.handle.net/10077/4560.

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2009/2010
Questa tesi di dottorato è focalizzata sui meccanismi dei sistemi magmatici che possono causare super-eruzioni, e ha come oggetto una sezione fossile che comprende le zone Ivrea-Verbano e la zona Serie dei Laghi (Italia, Nord-Ovest). Questa ricerca presenta evidenze di una caldera di età Permiana che espone il sistema magmatico fino alla profondità di 25 km. La correlazione delle età delle rocce vulcaniche e plutoniche della crosta media ed inferiore, mette in luce come queste costituiscano l’esposizione di un sistema magmatico che ha alimentato una caldera, e evidenzia la relazione cause-effetto tra l’intrusione di fusi basaltici derivanti dal mantello e il vulcanesimo acido. L’eruzione associata al collasso della caldera è stata di VEI > a 8 (Newhall and Self, 1982) e caratterizzata da una unica unità eruttiva a composizione riolitica. Il collasso della caldera è avvenuto in un campo vulcanico maturo, probabilmente tagliando il bordo di una caldera precedente. Il maggior volume di lave eruttate è composto da dacite alte in silice, i termini meno evoluti sono andesi-basalti. Le caratteristiche della caldera e del campo vulcanico sono simili a caldere formatesi durante la transizione da un regime tettonico compressionale ad uno estensionale-transpressivo. Il lavoro documenta una struttura interna della caldera simile a quella descritta per la caldera Grizzly Peak Colorado, USA (Fridrich et al., 1991) dove le frane escono come cunei dal “caldera wall” con una geometria simile ad un “albero di natale rovesciato” insieme ad una zonazione tra zone ricche di litici a zone di ignimbrite con pochi litici. Dopo il collasso, il riempimento della caldera è stato intruso direttamente da granito senza alcune evidenze di “caldera floor”. La composizione delle rocce della caldera del Sesia è compatibile con una ibridazione tra fusi basaltici derivanti dal mantello e una o più componenti anatettiche. La comparazione dell’eruzione che ha causato il collasso della caldera con le rocce del plutone sottostante non mette in luce una parentela con la zona superiore (Upper Valle Mosso); si aprono quindi nuove problematiche che richiedono ulteriori studi isotopici. Abbiamo documentato due stadi di alterazione idrotermale nel riempimento della caldera del Sesia, uno a più alta temperatura ed uno seguente a più bassa temperatura. Si può osservare che la circolazione idrotermale ha causato impoverimento di silice e un inizio di metasomatismo della roccia. La disposizione areale delle vene di quarzo e delle zone di silicificazione indicano che la deposizione ha interessato i confini tra materiali a differente porosità, in particolare tra la porosa ignimbrite intracaldera e materiali meno porosi come le rocce del “caldera wall” (grandi frane intracaldera ed il granito che ha intruso la caldera). Non abbiamo osservato alcuni dei fenomeni associati alla circolazione idrotermale nel granito che intrude il riempimento della caldera, perciò riteniamo che il contatto sia stato un importante confine alla circolazione dei fluidi idrotermali che circolavano principalmente nel riempimento della caldera.
XXIII Ciclo
1976
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BERNO, DAVIDE. "Early evolution of mantle melts intruding the lowermost oceanic and continental crust: insights from the troctolite-gabbro association of the Pineto ophiolite (Corsica) and the M. Capio ultramafic sill (Ivrea Verbano Zone, Western Alps)." Doctoral thesis, Università degli studi di Pavia, 2018. http://hdl.handle.net/11571/1255326.

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BERNO, DAVIDE. "Early evolution of mantle melts intruding the lowermost oceanic and continental crust: insights from the troctolite-gabbro association of the Pineto ophiolite (Corsica) and the M. Capio ultramafic sill (Ivrea Verbano Zone, Western Alps)." Doctoral thesis, Università degli studi di Pavia, 2018. http://hdl.handle.net/11571/1260136.

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BERNO, DAVIDE. "Early evolution of mantle melts intruding the lowermost oceanic and continental crust: insights from the troctolite-gabbro association of the Pineto ophiolite (Corsica) and the M. Capio ultramafic sill (Ivrea Verbano Zone, Western Alps)." Doctoral thesis, Università degli studi di Pavia, 2018. http://hdl.handle.net/11571/1255267.

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BERNO, DAVIDE. "Early evolution of mantle melts intruding the lowermost oceanic and continental crust: insights from the troctolite-gabbro association of the Pineto ophiolite (Corsica) and the M. Capio ultramafic sill (Ivrea Verbano Zone, Western Alps)." Doctoral thesis, Università degli studi di Pavia, 2018. http://hdl.handle.net/11571/1260129.

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BERNO, DAVIDE. "Early evolution of mantle melts intruding the lowermost oceanic and continental crust: insights from the troctolite-gabbro association of the Pineto ophiolite (Corsica) and the M. Capio ultramafic sill (Ivrea Verbano Zone, Western Alps)." Doctoral thesis, Università degli studi di Pavia, 2018. http://hdl.handle.net/11571/1260143.

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BERNO, DAVIDE. "Early evolution of mantle melts intruding the lowermost oceanic and continental crust: insights from the troctolite-gabbro association of the Pineto ophiolite (Corsica) and the M. Capio ultramafic sill (Ivrea Verbano Zone, Western Alps)." Doctoral thesis, Università degli studi di Pavia, 2018. http://hdl.handle.net/11571/1264007.

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BERNO, DAVIDE. "Early evolution of mantle melts intruding the lowermost oceanic and continental crust: insights from the troctolite-gabbro association of the Pineto ophiolite (Corsica) and the M. Capio ultramafic sill (Ivrea Verbano Zone, Western Alps)." Doctoral thesis, Università degli studi di Pavia, 2018. http://hdl.handle.net/11571/1263908.

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BERNO, DAVIDE. "Early evolution of mantle melts intruding the lowermost oceanic and continental crust: insights from the troctolite-gabbro association of the Pineto ophiolite (Corsica) and the M. Capio ultramafic sill (Ivrea Verbano Zone, Western Alps)." Doctoral thesis, Università degli studi di Pavia, 2018. http://hdl.handle.net/11571/1259890.

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BERNO, DAVIDE. "Early evolution of mantle melts intruding the lowermost oceanic and continental crust: insights from the troctolite-gabbro association of the Pineto ophiolite (Corsica) and the M. Capio ultramafic sill (Ivrea Verbano Zone, Western Alps)." Doctoral thesis, Università degli studi di Pavia, 2018. http://hdl.handle.net/11571/1265267.

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Books on the topic "Ivrea-Verbano"

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Ivrea-Verbano Zone Workshop (1992 Varallo, Italy). Ivrea-Verbano Zone Workshop: Abstracts : Varallo, Italy, July 20-25, 1992. [Washington, D.C.]: U.S. G.P.O., 1992.

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Ivrea-Verbano, Zone Workshop (1992 Varallo Italy). Ivrea-Verbano Zone Workshop: Abstracts, 1992 : Varallo, Italy, July 20-25, 1992. [Reston, Va.?]: Dept. of the Interior, U.S. Geological Survey, 1992.

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Evans, Paul John. Structural geometry of parts of the Ivrea-Verbano lower crustal section, Northern Italy.. Manchester: University of Manchester, 1995.

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Khazanehdari, Jalal. A model of the velocity structure of the Ivrea-Verbano lower crustal section, Northern Italy. Manchester: University of Manchester, 1996.

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R, Thornber Carl, and Geological Survey (U.S.), eds. Geologic constraints on metallogeny of magmatically underplated lower crust in the Ivrea-Verbano zone, northern Italy. [Denver, CO]: U.S. Dept. of the Interior, U.S. Geological Survey, 1993.

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Book chapters on the topic "Ivrea-Verbano"

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Garuti, G., and R. Rinaldi. "Further Data on Platinum—Palladium Minerals from the Ivrea-Verbano Sulphide Deposits." In Geo-Platinum 87, 179. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1353-0_18.

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Rutter, Ernest, Katharine Brodie, Tony James, Derek J. Blundell, and David A. Waltham. "Seismic Modeling of Lower and Mid-Crustal Structure as Exemplified by the Massiccio dei Laghi (Ivrea-Verbano Zone and Serie dei Laghi) Crustal Section, Northwestern Italy." In Heterogeneity in the Crust and Upper Mantle, 67–97. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4615-0103-9_3.

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Barboza, Scott A., and George W. Bergantz. "Dynamic model of dehydration melting motivated by a natural analogue: applications to the Ivrea–Verbano zone, northern Italy." In The Third Hutton Symposium on the Origin of Granites and Related Rocks. Geological Society of America, 1996. http://dx.doi.org/10.1130/0-8137-2315-9.23.

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Conference papers on the topic "Ivrea-Verbano"

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Tribuzio, Riccardo, Marta Antonicelli, Tong Liu, and Fu-Yuan Wu. "Melt-Peridotite Reactions in the Lowermost Continental Crust: Evidence from the Ivrea-Verbano Zone (Italian Alps)." In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.2624.

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Maendel, Andrew, Mattia Pistone, Benoît Petri, Willis Hames, Alexey Ulyanov, Olivier Reubi, Benita Putlitz, and Othmar Müntener. "INVESTIGATING A RECENTLY DISCOVERED OLIVINE-GABBRO FROM THE IVREA VERBANO ZONE: NEW INSIGHTS INTO MAGMATIC DIFFERENTIATION IN THE LOWER CONTINENTAL CRUST." In Joint 56th Annual North-Central/ 71st Annual Southeastern Section Meeting - 2022. Geological Society of America, 2022. http://dx.doi.org/10.1130/abs/2022nc-375618.

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Ogunyele, Abimbola, Tommaso Giovanardi, Mattia Bonazzi, Maurizio Mazzucchelli, and Alberto Zanetti. "Orogenic to anorogenic signatures in Mesozoic intra-plate magmatism: Evidence from alkali-rich dykes in the Finero Phlogopite Peridotite (Ivrea-Verbano Zone, Southern Alps)." In Goldschmidt2021. France: European Association of Geochemistry, 2021. http://dx.doi.org/10.7185/gold2021.8188.

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Reports on the topic "Ivrea-Verbano"

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Geologic map of the southern Ivrea-Verbano zone, northwestern Italy. US Geological Survey, 2002. http://dx.doi.org/10.3133/i2776.

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