A5009681168- Geological and Geochemical Analysis
- earthquake and tectonic studies
- High-pressure geophysics and materials
- Geochemistry and Geologic Mapping
- Geological formations and processes
- Geology and Paleoclimatology Research
- Paleontology and Stratigraphy of Fossils
- Geological Formations and Processes Exploration
- Geological and Geophysical Studies Worldwide
- Geochemistry and Elemental Analysis
- Mineralogy and Gemology Studies
- 3D Surveying and Cultural Heritage
- Geological and Geophysical Studies
- Archaeological and Geological Studies
- Geomagnetism and Paleomagnetism Studies
- Nuclear Physics and Applications
- Geological Modeling and Analysis
- Marine and environmental studies
- Landslides and related hazards
- Geological and Tectonic Studies in Latin America
- Zeolite Catalysis and Synthesis
- Maritime and Coastal Archaeology
- Ancient and Medieval Archaeology Studies
University of Trieste
2013-2024
Universidade de São Paulo
2015
University of Modena and Reggio Emilia
1993
United States Geological Survey
1992
University of Milan
1992
University of Colorado Boulder
1992
University of Ferrara
1981
The Ivrea–Verbano Zone in the western Italian Alps contains one of world's classic examples ponding mantle-derived, mafic magma deep crust. Within it, a voluminous, composite pluton, Mafic Complex, intruded lower-crustal, high-grade paragneiss Kinzigite Formation during Permian–Carboniferous time, and is now exposed cross-section as result Alpine uplift. age intrusion still debated because results geochronological studies last three decades on different rock types with various dating...
The Ivrea zone consists of a metapelitic series and main basic body, with related ultramafites (peridotites pyroxenites). peridotites are currently considered as mantle material. On the basis their relationships country rocks, bulk phase composition factorial analysis, it is demonstrated in this paper that formed by fractionation cumulus processes. body generally metamorphic suite granulites, have suffered same event series. In hypothesis represents deep-seated stratiform complex proposed....
Research Article| July 01, 2009 Magmatic plumbing of a large Permian caldera exposed to depth 25 km J.E. Quick; Quick 1Southern Methodist University, Dallas, Texas 75275, USA Search for other works by this author on: GSW Google Scholar S. Sinigoi; Sinigoi 2Dipartimento di Scienze della Terra, Università Trieste, via Weiss 8, 34127 Italy G. Peressini; Peressini Demarchi; Demarchi J.L. Wooden; Wooden 3Stanford Palo Alto, California 94305, A. Sbisà Geology (2009) 37 (7): 603–606....
Abstract Crustal-scale magmatic systems act as filters between the mantle and atmosphere, can generate large volcanic eruptions that pose significant hazards while altering Earth’s climate. Quantifying growth rates, magma fluxes, duration of storage at different crustal levels is crucial for understanding such systems, but these parameters are poorly constrained due to scarcity exposed sections. Here we present first detailed reconstruction emplacement differentiation time scales a complete...
The Ivrea‐Verbano Zone of northern Italy provides an opportunity to study directly the effects intrusion large volumes mantle‐derived melts into lower continental crust. Alpine uplift has exposed a complex mafic intermediate plutonic rocks, which had intruded crust during Permian. Field mapping reveals gross arcuate structure within that survived tilting and uplift. In terms orientation intrusion, banding foliation are subhorizontal near base steepen gradually up section. Outcrop relations...
Interstitial, subhedral, slightly pink zircons have been separated from a diorite of the External Gabbro unit Finero Mafic Complex, which crops out in northernmost tip Ivrea–Verbano Zone (IVZ, Southern Alps). They are characterized by oscillatory zoning under cathodoluminescence (CL), high Th/U ratio (0·9–0·4), and associated U, Th, Pb, rare earth element (REE), Ta, Nb, Li P contents, consistent with magmatic origin. The mean single concordant ages is 232 ± 3 Ma, here proposed to constrain...
The Ivrea‐Verbano and adjacent Strona‐Ceneri zones have been described collectively as a section through the continental crust. While resident in lower crust, amphibolite to granulite‐facies paragneiss of Zone was intruded by huge volumes mafic intermediate plutonic rocks grouped Mafic Complex. Growth Complex involved hypersolidus deformation an extensional environment. Isotopic trace element variations close axis this structure indicate crystallization from mantle‐derived melts that were...
Abstract Silicic calderas can evacuate 100 to >1000 km3 of rhyolitic products in a matter days months, leading questions on pre-eruptive melt generation and accumulation. Whereas silicic plutonic units may provide information the igneous evolution crystal-mush bodies, their connection with volcanic remains enigmatic. In Ivrea–Verbano Zone southern Alps, plumbing system Permian caldera is exposed depth about 25 km tilted crustal blocks. The upper-crustal segment this magmatic (also...
The emplacement history and thermal evolution of subvolcanic magma reservoirs determine their longevity, size, ability to feed volcanic eruptions. As zircon saturation is dependent on melt temperature composition, quantitative analysis age distributions provides insight into the timing magnitude intensive parameter variations during lifetime a reservoir. Here we present chemical abrasion-isotope dilution-thermal ionization mass spectrometry (CA-ID-TIMS) U-Pb crystallization ages in-situ...
Research Article| August 01, 1995 Emplacement of mantle peridotite in the lower continental crust, Ivrea-Verbano zone, northwest Italy James E. Quick; Quick 1Max-Planck Institut für Chemie, Saarstrasse 23, Postfach 3060, D-6500 Mainz, Germany Search for other works by this author on: GSW Google Scholar Silvano Sinigoi; Sinigoi 2Istituto di Mineralogia e Petrografia, Università Trieste, Piazzale Europa 1, 34100 Adriano Mayer Author and Article Information Publisher: Geological Society America...
Research Article| July 01, 1992 Synmagmatic deformation in the underplated igneous complex of Ivrea-Verbano zone James E. Quick; Quick 1U.S. Geological Survey, M.S. 903, Federal Center, Denver, Colorado 80225 Search for other works by this author on: GSW Google Scholar Silvano Sinigoi; Sinigoi 2Istituto di Mineralogia e Petrografia, Università Trieste, Piazzale Europa 1, 34100 Italy Luisa Negrini; Negrini Gabriella Demarchi; Demarchi Adriano Mayer Author and Article Information Publisher:...
Abstract The physical process of crystal-melt separation is responsible for the accumulation small to very large volumes (>100 km3) eruptible rhyolitic melt in shallow crust. Granitic intrusions, although providing a terminal, time-integrated image segregation processes, host an unmatched record properties controlling mechanisms and rates interstitial extraction from crystal-rich source. We applied mass balance calculations thermodynamic modeling simulations extensive bulk rock...