Simona Ferrando

Simona Ferrando
Università degli Studi di Torino | UNITO · Dipartimento di Scienze della Terra

PhD

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75
Publications
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Publications

Publications (75)
Article
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Carbon dragged at sub-arc depths and sequestered in the asthenospheric upper mantle during cold subduction is potentially released after millions of years during the breakup of continental plates. However, it is unclear whether these deep-carbon reservoirs can be locally remobilized on shorter-term timescales. Here we reveal the fate of carbon rele...
Article
Primary gypsum represents an excellent paleobiological archive due to its early and fast growth, favoring the preservation of delicate biomineralized structures. The Mediterranean region is renowned for evaporite deposits that formed during the Messinian salinity crisis (MSC), an event that supposedly annihilated most of the marine biota. However,...
Conference Paper
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The Rocca Canavese Thrust Sheet Unit (RCT; Pognante, 1989), located in the inner sector of the Sesia-Lanzo Zone in the Western Alps, represents a captivating example of a basement whose genesis has remained debated for years. Despite the RCT has been associated with a subducted-related mélange, relying on the presence of two different metamorphic p...
Article
Subduction fluids play a crucial role in regulating long-term chemical cycles. Their characterisation is essential to understand the processes responsible for metasomatism, oxidation and melting of the mantle wedge. Both direct (fluid inclusion studies) and indirect (thermodynamic modelling) approaches to study subduction fluids have reliability is...
Conference Paper
Full-text available
In the geological setting of the Italian Western Alps, the Rocca Canavese Thrust Sheet Unit (RCT) is a small unit (only a few km2) marking the innermost sector of the Sesia-Lanzo Zone of the Austroalpine Domain, between the Eclogitic Micaschists Complex to the west and the Canavese Zone of the Southern Alpine Domain to the east. This unit has been...
Article
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Evidence of hydrothermal activity is reported for the Mesozoic pre‐ and syn‐rift successions of the western Adriatic palaeomargin of the Alpine Tethys, preserved in the Western Southalpine Domain (NW Italy). The products of hydrothermal processes are represented by vein and breccia cements, as well as dolomitization and silicification of the host r...
Article
Full-text available
Exposure to natural occurrences of asbestos (NOA) and other potentially hazardous elongated mineral particles (EMPs) may pose a risk to human health and the environment. Weathering forces and anthropic activities may alter the cohesion of NOA-bearing outcrops and disperse EMPs in air, water, and soil. The current paradigm for fibre toxicity indicat...
Article
Raman spectroscopy has been used extensively to calculate CO2 fluid density in many geological environments, based on the measurement of the Fermi diad split (Δ; cm-1) in the CO2 spectrum. While recent research has allowed the calibration of several Raman CO2 densimeters, there is a limit to the inter-laboratory application of published equations....
Article
Full-text available
The geochemical signature of magmas generated at convergent margins greatly depends on the nature of fluids and melts released during subduction. While major- and trace-elements transport capacity of ultrahigh pressure (UHP) hydrous-silicate melts has been investigated, little is known about solute enrichment and fractionation in UHP (>3.5–4 GPa) s...
Article
The physical properties of silicate melts are of critical importance for understanding magmatic and volcanic processes on Earth and other planets. Most physical properties of melts are, ultimately, a consequence of the structural organization of the melt. Robust and fully generalizable strategies for the prediction of properties of naturally occurr...
Article
Full-text available
The sulfur-bearing limestones interbedded in the upper Miocene diatomaceous sediments (Tripoli Formation) of the Lorca Basin (SE Spain) are typified, as other Mediterranean coeval carbonate and gypsum deposits, by filamentous, circular and rod-shaped microstructures of controversial origin. These features have been interpreted both as fecal pellets...
Article
In the North‐East Greenland Caledonides, P–T conditions and textures are consistent with partial melting of UHP eclogite during exhumation. The eclogite contains a peak assemblage of garnet, omphacite, kyanite, coesite, rutile and clinozoisite; in addition, phengite is inferred to have been present at peak conditions. An isochemical phase equilibri...
Article
Full-text available
A polyphase metamorphic basement crops out in the northern part of the South Alpine domain of the Alps. It is involved into Alpine tectonics and is locally overprinted by a low-grade Alpine metamorphism. Pre-Alpine and Alpine events must be distinguished in order to reconstruct the tectonic evolution. We investigated Pre- Alpine structures in the b...
Article
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The long-term carbon budget has major implications for Earth’s climate and biosphere, but the balance between carbon sequestration during subduction, and outgassing by volcanism is still poorly known. Although carbon-rich fluid inclusions and minerals are described in exhumed mantle rocks and xenoliths, compelling geophysical evidence of large-scal...
Conference Paper
Full-text available
Several examples of shallow burial hydrothermal dolomitization have been recently documented in Mesozoic successions cropping out in different sectors of the Western and Central Alps and belonging to both the European and the Adriatic palaeo rifted margin of the Alpine Tethys. We will discuss three different case studies where dolomi-tization was d...
Chapter
The present chapter focuses on the still poorly known sources, distribution and fractionation of halogens in the oceanic and continental lithospheric mantle in intraplate and extensional tectonic settings, and in the deep cratonic sub-continental mantle that hosts diamonds and kimberlites. In the lithospheric mantle, halogens are considered to be m...
Article
The thermal evolution of distal domains along rifted margins is at present poorly constrained. In this study, we show that a thermal pulse, most likely triggered by lithospheric thinning and asthenospheric rise, is recorded at upper crustal levels and may also influence the diagenetic processes in the overlying sediments, thus representing a critic...
Article
The Alpine Tethys rifted margins were generated by a Mesozoic polyphase magma-poor rifting leading to the opening of the Piedmont-Ligurian “Ocean.“ This latter developed through different phases of rifting that terminated with the exhumation of subcontinental mantle along an extensional detachment system. At the onset of simple shear detachment fau...
Article
At active volcanoes, petrological studies have been proven to be a reliable approach in defining the depth conditions of magma transport and storage in both the mantle and the crust. Based on fluid inclusion and mineral geothermobarometry in mantle xenoliths, we propose a model for the magma plumbing system of the Island of El Hierro (Canary Island...
Article
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In deep and cold subduction such as that experienced by the UHP Units of the Western Alps, carbon dissolution is a relevant mechanism for carbon transfer from the slab into the mantle. The UHP impure Cal-Dol-marbles from the Dora-Maira Massif are studied to investigate the poorly known evolution of dolomite during deep subduction. Dolomite shows fo...
Article
Peculiar coesite + chloritoid + garnet +/- glaucophane talcschists have been used to make at least four quern-stones, unearthed in the ruins of a villa rustica belonging to the Roman imperial period and located at Costigliole Saluzzo, Western Alps. The site of the villa rustica and the presence of coesite relics could suggest a possible provenance...
Conference Paper
See the GSA abstract program for more details: https://gsa.confex.com/gsa/2015AM/webprogram/Paper264908.html
Article
Full-text available
The thick gypsum deposits formed in the Mediterranean Basin during the Messinian salinity crisis incorporate dense mazes of fila-mentous fossils, which were interpreted as algae or cyanobacteria, thus pointing to a shallow-marine subtidal or intertidal environment. The data presented here reveal that these filaments represent remains of colorless,...
Chapter
This paper presents a minero-petrographic study of the rocks employed in the building of stone bridges over the Po River in the city of Turin (Piemonte Region – NW of Italy). In all the bridges, the dimension stones are present in different quantities and elements, either representing the only building material or associated with several artificial...
Article
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In the Piedmont plain of NW Italy the Ivrea Morainic Amphitheatre (IMA) is a remarkable evidence of the Quaternary glaciations. It consists of a wide (505 km2) complex of lateral moraines (i.e. the Serra d’Ivrea), end moraines and kame terraces, encircling a 200 km2 wide flat internal depression above which a subglacially moulded rocky hills (the C...
Article
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A number of studies suggest that mountain ranges have strong impact on the global carbon cycle; metamorphic degassing from active collisional orogens supplies a significant fraction of the global solid-Earth derived CO2 to the atmosphere, thus playing a fundamental role even in today’s Earth carbon cycle. The Himalayan belt, a major collisional oro...
Article
Collection and sharing of geoheritage information are nowadays enhanced by using digital tools and IT (Information Technology) applications that allow homogeneous storing of data, building of sharable databases, and transfer of knowledge between experts and communities. In the frame of the PROGEO-Piemonte project (PROactive management of GEOlogical...
Article
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This review combines fluid inclusion data from (HP-)UHP rocks with experimental research and thermodynamic models to investigate the chemical and physical properties of fluids released during deep subduction, their solvent and element transport capacity, and the subsequent implications for the element recycling in the mantle wedge. An impressive nu...
Conference Paper
Full-text available
Polymetamorphic impure Cal-Dol-marbles from the UHP (730°C at 4.0–4.5 GPa) Brossasco-Isasca Unit (BIU; Dora-Maira Massif) are promising rocks to investigate the poorly known fate of dolomite within the Earth’s interior. Dolomite occurs as pre-kinematic porphyroclasts with curved, irregular or lobed margins. Under both CL and SEM, dolomite usually s...
Chapter
Full-text available
The Monviso Ophiolite Geopark (MOG) is one of the strategic geothematic areas chosen to represent the geodiversity of Piemonte within the research project “PROactive management of GEOlogical heritage in the PIEMONTE region”. The MOG is an extraordinary well preserved ophiolite body in the Italian Western Alps. It is one of the best known relics of...
Article
The recognition of peculiar laminated layers atypically rich in a biogenic intrabasinal component in the mudstone intervals from the Messinian (late Miocene) Primary Lower Gypsum unit (5.97-5.60 Ma) of the Piedmont basin (NW Italy) provides information on the palaeoenvironmental evolution at precessional insolation maxima. These cyclic layers consi...
Article
One of the peculiarities of Turin (NW Italy) lies on the presence of monumental arcades which mainly consist of stone material. These arcades, characterized by more than 12 km of interconnected paths, represent one of the widest city promenades of Europe and are an architectural, aesthetic and socio-economic example unique in the world. This paper,...
Article
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During the first stage of the Late Miocene Messinian salinity crisis (5.97–5.60 Ma), deposition of sulfates (the Primary Lower Gypsum) occurred in shallow silled peripheral subbasins of the Mediterranean undergoing restricted water exchange with the Atlantic Ocean. Fluid inclusions in Messinian selenite crystals from the Piedmont Basin (northwest I...
Article
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In order to promote geosite conservation in the project entitled ‘PROactive management of GEOlogical heritage in the PIEMONTE Region’, we propose a comprehensive study involving the Monviso Massif (MM) geothematic area, one of the most outstanding symbols of the Alps and particularly of the Cottian Alps. Specifically, at the MM, the inventory of a...
Article
In Piemonte, stone has always been the most widely used raw material for buildings, characterizing the architectural identity of the city of Turin. All kinds of rocks, metamorphic, igneous, and sedimentary, are represented, including gneisses, marbles, granitoids, and, less commonly, limestones. The great variety of ornamental stones is clearly due...
Article
Full-text available
The stone resources have always been a major source of material in the building and, in particular, as raw material to create the masterpieces of sculpture and architecture that are now part of the cultural heritage of the humanity. Therefore, knowledge of stone resources, their mineral-petrographic features, their use and quarrying and working tec...
Article
Terra Nova, 24, 423–436, 2012 Mg-metasomatic rocks (e.g. whiteschists, leucophyllites) derived from post-Variscan granitoids are common in the Alps. Previously reported field, petrological, geochemical and fluid inclusion data are combined to trace the genetic processes and the associated tectonic scenarios. Many common features can be recognised i...
Article
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This study discusses new and published data on the composition of fluid inclusions contained in mantle minerals of spinel and garnet peridotite xenoliths, in samples from geodynamically distinct settings (Ethiopian plateau, Hawaii, Canary Islands, and western Mediterranean region). Based on spectroscopic Raman and FTIR analyses we show that, contra...
Article
Petrological and geochemical study of volatile bearing phases (fluid inclusions, amphibole, and nominally anhydrous minerals) in a spinel lherzolite xenolith suite from Quaternary lavas at Injibara (Lake Tana region, Ethiopian plateau) shows compelling evidence for metasomatism in the lithospheric mantle in a region of mantle upwelling and continen...
Article
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We report on Alpine metamorphic and fluid inclusion evolution of a polyphase rodingite occurrence within the Bellecombe antigorite-serpentinite, exposed in the Piemonte zone of Aosta Valley, NW Italy. Fine-grained rodingitic rocks, derived from a protolith of basaltic dike(s), are cross-cut by a network of at least six vein generations, consisting...
Article
The age of high-pressure metamorphism is crucial to identify a suitable tectonic model for the vast Variscan orogeny. Banded HP granulites from the Gesso-Stura Terrain in the Argentera Massif, Italy, have been recently described (Ferrando et al., 2008) relicts of high-pressure metamorphism in the western part of the Variscan orogen. Bulk rock chemi...
Article
The "External Crystalline Massifs" of the Western Alps (Mont Blanc, Aiguilles Rouges, Grandes Rousses, Belledonne, Pelvoux, and Argentera) consist of a polymetamorphic Variscan basement, which was only marginally reworked during the Alpine tectonometamorphic cycle. These massifs experienced an early subduction event at peak metamorphic conditions o...
Article
Composition and provenance of slab-derived hydrous fluids and melts represent a key parameter in understanding the geochemical variations of subduction-related magmas. Chemical and physical characteristics of the slab components may be strongly reliant upon both the thermal structure of the mantle wedge, and the nature of the subducted lithosphere....
Article
The ultrahigh-pressure pyrope whiteschists from the Brossasco-Isasca Unit of the Southern Dora-Maira Massif represent metasomatic rocks originated at the expense of post-Variscan granitoids by the influx of fluids along shear zones. In this study, geochemical, petrological and fluid-inclusion data, correlated with different generations of pyrope-ri...
Article
We report SEM-EDS, WDS, micro-Raman, IR-synchrotron-radiation imaging, and LA-ICP-MS data on minerals and multiphase solid inclusions (MSI) in equilibrium at UHP peak in Dora-Maira whiteschists. These rocks consist of pyrope-rich garnet, quartz/coesite, phengite, kyanite, talc, chlorite, and minor Mg-rich minerals. Three generations of pyrope occur...
Article
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New geologic mapping of the area near Castellamonte (Torino Province) describes a wide Plio-Quaternary continental succession, up to about 100-m thick. This sequence is distinguished according to allostratigraphic criteria. Altitude, degree of pedogenesis and sediment supply from different basins are also used. Within a single alloformation, severa...
Article
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At the Frisson Lakes (FL), a small layered mafic sequence surrounded by migmatitic orthogneisses is exposed as a tectonic window of the crystalline basement of the Gesso-Stura Terrain (GST) of the Argentera Massif (Western Alps, Italy) within its Meso-Cenozoic sedimentary cover. The mafic sequence is characterised by Pl-rich and Pl-poor layers of H...
Article
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Petrographic, minerochemical, and geothermobarometric data are reported for a suite of spinel-lherzolite ± pargasite xenoliths hosted in a Quaternary basanitic lava flow from the North-Western Ethiopian Plateau (Injibara, Lake Tana Province). Protogranular to porphyroclastic (deformed) rocks show evidence of a modal metasomatism, represented by a C...
Article
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Minerals, fluid inclusions and stable isotopes have been studied in ultrahigh-pressure (UHP) OH-rich topaz–kyanite quartzites from Hushan (west of Dongai), in southern Sulu (China). The quartzites underwent a metamorphic evolution characterized by a peak stage (3·5 GPa and 730–820°C) with the anhydrous assemblage coesite + kyanite I, followed by an...
Article
Recent discovery of multiphase solid inclusions (MSI) in peak minerals from ultra-high pressure (UHP) terranes opened up new prospects for understanding the fluid-rock interaction during deep subduction in both crust and mantle. The first report on MSI in UHP rocks was from Dora-Maira (DM; Case Parigi; western Alps) whiteschists, more than ten year...
Article
Full-text available
Fluid inclusions in amphibole-bearing spinel lherzolite xenoliths from Quaternary volcanic necks at Injibara (western part of the Ethiopian plateau) show compelling evidence for brines in the lithospheric mantle in a region of continental flood basalts. The petrography of the xenoliths indicates a transition from deformed (protogranular to porphyro...