A5091352230- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Geological and Geophysical Studies Worldwide
- Geology and Paleoclimatology Research
- Geological formations and processes
- Geochemistry and Geologic Mapping
- Hydrocarbon exploration and reservoir analysis
- High-pressure geophysics and materials
- Seismic Imaging and Inversion Techniques
- Geological Studies and Exploration
- Methane Hydrates and Related Phenomena
- Cryospheric studies and observations
- Drilling and Well Engineering
- Maritime and Coastal Archaeology
- South Asian Studies and Conflicts
- Geological Modeling and Analysis
- Mineralogy and Gemology Studies
- Geological Formations and Processes Exploration
- Coastal and Marine Dynamics
- Archaeology and ancient environmental studies
- Italian Fascism and Post-war Society
- Polar Research and Ecology
- Metallurgy and Cultural Artifacts
- Medieval European Literature and History
- South Asian Cinema and Culture
University of Genoa
2021-2024
Sorbonne Université
2018-2023
Centre National de la Recherche Scientifique
2019-2020
Institut des Sciences de la Terre de Paris
2018-2020
Abstract The Dora‐Maira massif is an archetypal nappe stack of subducted and exhumed upper crust. Slices continental crust experienced metamorphism at blueschist to ultrahigh‐pressure (UHP) eclogite‐facies conditions. While the timing peak in UHP unit has been extensively studied, little known about other units. In order constrain conditions high‐pressure metamorphism, U‐Pb‐trace element analyses rutile titanite were carried out across stack. data reveal Alpine metamorphic ages younging...
Abstract Episodic fluid overpressure and escape is invoked as a cause or consequence of many subduction-zone seismic phenomena but can be challenging to constrain in exhumed high-pressure metamorphic rocks. In situ measurements lithium isotopes garnet reveal evidence episodic transport subduction shear zone now exposed the Monviso ophiolite (Western Alps). Garnet from an eclogite block associated metasomatic reaction rind was analyzed by secondary ion mass spectrometry (SIMS). All preserves...
The review of recent bathymetric and geophysical data collected in the framework several research cartographic projects have allowed a detailed reconstruction morpho-structural setting (neo)tectonic evolution for both Alpine Apennine margins Ligurian Sea (Italy). widespread occurrence erosional processes sediment mass movements along steep continental slope within system submarine canyons reflect close correlation between active tectonics morpho-dynamic Margin. This relation is better...
The processes that rule coupling/decoupling and rupture mechanisms along the plate interface in deep portions of active subduction zones are largely inferred from geophysical observations. These observations highlight a wide range deformation mechanism may coexist, such as: aseismic slip, episodic non-volcanic tremor slip (ETS), regular earthquakes. Despite high amount data obtained through indirect approaches, our comprehension occurring is still limited. In particular, at great depth...
Key Points Mylonitic metagabbros cemented by unfoliated Omp + Grt ± Lws matrices show that pristine brecciation may occur at eclogitic conditions Geochemical variations and sharp increase in fluid content of points to local embrittlement prior external fluids ingression Structural geochemical evidence suggest eclogite‐facies can control initial strain localization within HP shear zones
ABSTRACT The Monviso metaophiolite complex (W. Alps) is an almost intact fragment of Tethyan oceanic lithosphere metamorphosed to eclogite-facies peak metamorphic conditions during Alpine subduction. This 1:20.000 scale geological map encompasses, in area ∼35 km2, the Unit (MU) and Lago Superiore (LSU). Major focus was given Lower Shear Zone sub-unit (LSZ), where strongly deformed serpentinite-rich matrix are embedded blocks variably brecciated metagabbros. Here, occurrence mylonitic...
We present the characterization of geohazard-related features Ligurian Sea with map its physiographic domains (1:250,000 scale) and five maps (1:100,000 morphological morpho-bathymetric elements. These were realized in framework MaGIC (Marine Geohazard along Italian Coasts) project, promoted by Civil Protection Department. The submarine geohazards continental margins, together mapping marine geological are critical for management coastal risks. Multibeam bathymetric data combined...
Seismic lines and sediment cores collected along the shelf between Albenga Loano (Liguria, NW Italy) allowed an unprecedented reconstruction of characters distribution late Quaternary transgressive littoral deposits. Multiple seismic datasets stratigraphic logs were managed within a single, GIS-based software. This approach merging, analysis, interpretation multimethodological datasets, greatly increasing understanding study area. On reflection lines, identification high-amplitude acoustic...
Abstract The dense fault network that separates the tectonic units of northern Victoria Land to E from East Antarctic Craton W represents a regionally sized, NNW‐SSE trending deformation zone is also known as Rennick Graben Fault system (RGF). This long‐lived characterized by great structural complexity, with superposition and polyphasic reactivation regional faults; it have been active since Cambrian‐Ordovician, when formed suture between different terranes, up recent. Its complete...
Faults and shear zones within the metamorphic ultramafic rocks of Voltri Massif (Ligurian Alps, NW Italy) often exhibit significant or complete carbonation host are locally associated with gold mineralization hosted in quartz veins (e.g., Lavagnina Lakes area). Here, a specific fault zone part larger regional system (i.e., Bisciarelle Fault Zone) displays distinct structural characteristics linked to fluid-assisted multistage brittle deformation serpentinized peridotites, possibly indicating...
As part of the PNRA_BOOST project (Bridging Onshore-Offshore STructures at Pacific Coast North Victoria Land, Antarctica: an integrated approach), new offshore geophysical data (multichannel high-resolution seismic lines, bathymetric and magnetic data) were acquired on board OGS R/V Laura Bassi (Feb 2023, XXXVIII Italian Antarctic Expedition), along side underexplored key area boundary between East West Antarctica. A preliminary analysis allows identification interpretation morphological...
Ultra-high pressure (UHP) units sample the deepest portion of a subduction zone that returned to surface, escaping their fate disappearing deep into mantle. Several mechanisms have been proposed for exhumation UHP in collisional orogens but topic remains still controversial and poorly understood. The models invoked generally require positive buoyancy as trigger exhumation. However, Ghignone et al. (2023) reported first time occurrence slice tens kilometres length oceanic slab, i.e., Lago...
Understanding the source processes and wave propagation in heterogeneous rock media is one of most challenging frontiers to improve seismic risk assessments densely populated areas. In this framework, sector Voltri Massif (NW Italian Alps) forming hinterland city Genoa a natural laboratory investigate (i) interaction between faulting fluid circulation during (potential) paleo-seismic activity (ii) detection, location, characterization micro-earthquakes along tectonic lineaments developed...
North Victoria Land (NVL), Antarctica is one of the most remote and inaccessible outposts our planet where few outcrops are available for direct geological investigation. The long-lasting tectonic evolution this region results in a complex architecture characterized by presence regionally sized, crustal scale faults whose structural characteristics (e.g. geometry, thickness, location transfer zones off-shore prosecution) still debated. In work we present map intensity brittle deformation...