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  • 1
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    New spectroscopic data on “marmi mischi” baroque glass decorations from “pallium altaris” of Messina (Sicily, Italy) (2020)
    maajournal
    Details
    Publication Date: 2021-01-21
    Description: The ―Marmi Mischi‖ (mixed glass mosaic tesserae) are artificial calcium-rich glass decorations, typically used in southern Italy and Sicily during the Baroque period (1600-1700) to decorate walls and altars of religious edifices. In this study, we provide new archaeometric information on the raw materials, pigments and opacifying agents used to produce ―Marmi Mischi‖ of ―Pallium altaris‖ from the Messina Regional Museum. To reach this objective, all the studied glass decorations were analysed by means of non-destructive portable X-ray fluorescence (pXRF). Some of the decorations were further subjected to Environmental scanning electron microscopy (ESEM) and X-ray powder diffraction (XRPD) in the laboratory. Two types of glasses were recognised. The first one – bluish green in colour – is a basic or slightly modified ―carcara glass‖, characterized by high concentrations of P. The second type – dark blue, turquoise, light turquoise and red in colour – is a ―carcara glass‖ modified by craftsmen, containing high amounts of colouring agents (Cu, Pb, Sn, Sb). The presence of schreibersite in some of the analysed samples indicates that forming occurred in extremely reducing conditions and proves that the glasses were produced in CaO furnaces called ―carcara‖ and used to produce lime. Moreover, our results suggest that: i) the dark blue, turquoise and bluish green nuances are as a result of Fe2+, with minor contribution by Cu and Co; ii) the light turquoise nuance is related to Fe2+ and Cu2+, with minor contribution by Co; and iii) the red colour is as a result of the reduction of copper to the metallic state by Sn and Pb. Ca-antimonate (Ca2Sb2O7) was identified as an opacifying agent for the blue glassy decorations, whereas metallic Cu was identified for the red. The overall results of the chemical and physical characterization of the ―Pallium altaris‖ glassy decorations from the Messina Regional Museum suggest that the used raw material was ―carcara glass,‖ to which various chemical elements were suitably added to obtain the desired nuances.
    Description: Published
    Description: 97-111
    Description: 7SR AMBIENTE – Servizi e ricerca per la società
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
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    The SEISMOFAULTS project: First surveys and preliminary results for the Ionian Sea area, Southern Italy (2021)
    INGV
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    Publication Date: 2021-01-27
    Description: The SEISMOFAULTS project (www.seismofaults.it) was set up in 2016 with the general plan of exploring the seismicity of marine areas using deep seafloor observatories. The activity of the first two years (Seismofaults 2017 and 2018) consisted of the installation of a geophysical-geochemical temporary monitoring network over the Ionian Sea floor. Eleven ocean-bottom seismometers with hydrophones (OBS/H) and two seafloor geochemical-geophysical multiparametric observatories were deployed to: (1) identify seismically active faults; (2) identify potential geochemical precursors of earthquakes; and (3) understand possible cause–effect relationships between earthquakes and submarine slides. Furthermore, five gravity cores were collected from the Ionian Sea bottom and ~4082 km of geophysical acquisition, including multibeam and single channel seismic reflection data, were acquired for a total of 4970 km2 high-resolution multibeam bathymetry. Using Niskin bottles, four water column samples were collected: two corresponding at the location of the two multiparametric observatories (i.e., along presumably-active fault zones), one corresponding at a recently discovered mud volcano, and one located above a presumably-active fault zone away from the other three sites. Preliminary results show: (1) a significant improvement in the quality and quantity of seismological records; (2) endogenous venting from presumably active faults; (3) active geofluid venting from a recently-discovered mud volcano; and (4) the correct use of most submarine devices. Preliminary results from the SEISMOFAULTS project show and confirm the potential of multidisciplinary marine studies, particularly in geologically active areas like southern Italy and the Mediterranean Sea.
    Description: Published
    Description: SE326
    Description: 3A. Geofisica marina e osservazioni multiparametriche a fondo mare
    Description: JCR Journal
    Keywords: Earthquake; Ionian Sea; OBS.
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 3
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    RELAZIONI TRA FLUIDI CIRCOLANTI E TETTONICA ATTIVA NEL SETTORE MERIDIONALE DELL’ARCO CALABRO: UNO STRUMENTO PER LA VALUTAZIONE DEI PROCESSI SISMOGENETICI (2009)
    INGV
    Details
    Publication Date: 2017-04-04
    Description: Le metodologie di indagine geochimica applicate ad un’ampia porzione dell’Appennino meridionale, esteso dalla Calabria settentrionale ai Monti Nebrodi, nell’ambito del progetto INGV-DPC S2, hanno consentito di valutare le caratteristiche dei fluidi emessi in coincidenza di importanti lineamenti strutturali, permettendo di evidenziare le relazioni intercorrenti tra l’assetto tettonico e la genesi, la circolazione ed il comportamento dei fluidi circolanti. L’area di studio rappresenta la porzione più meridionale dell’Arco Calabro, il cui stile deformativo dominante dal Pleistocene medio all’attuale, è caratterizzato da una estensione ESE-WNW. Nella Sicilia nord-orientale, le faglie neotettoniche dislocano i livelli crostali più superficiali e si dispongono secondo direzioni preferenziali orientati circa NW-SE con meccanismi deformativi a componente trascorrente ed estensionale e N-S/NE-SO con meccanismi deformativi trascorrenti, a tratti con componente compressiva. Le strutture crostali radicate sono rappresentate dal sistema “Patti-Eolie”, che si connette a terra con il sistema “Tindari-Letojanni” e dal “sistema di Messina”. Il primo mostra, anche a livello sismologico, caratteri deformativi transtensivi; nel secondo sistema, caratterizzato da faglie a prevalente componente distensiva del rigetto la catena presenta un tasso di sollevamento recente non uniforme, con valori massimi lungo la costa messinese ionica e tassi minori lungo quella tirrenica. L’esistenza di fenomeni attivi di sollevamento regionale è dimostrato da alcune evidenze, come la presenza di argille marine quaternarie affioranti diverse centinaia di metri al di sopra del livello del mare nonché di piattaforme di abrasione tirreniane ben sviluppate ad una altitudine di circa 130 m. nei pressi di Taormina e sul versante calabrese dello stretto di Messina. La struttura tettonica più importante che interseca il sistema Ibleo-Maltese è costituito dal sistema di faglie di Messina, orientato NNE-NNW. Il terremoto di Messina del 1908 è stato attribuito ad una “faglia cieca” nell’area di Messina. Lungo le principali strutture tettoniche, sono presenti attività idrotermali e di degassamento note da tempi storici, che dal punto di vista geochimico mostrano caratteristiche molto diverse in funzione della loro ubicazione.
    Description: Published
    Description: Reggio Calabria
    Description: 3.2. Tettonica attiva
    Description: open
    Keywords: fluidi ; Tettonica attiva ; 04. Solid Earth::04.04. Geology::04.04.12. Fluid Geochemistry
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Extended abstract
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  • 4
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    Second International Workshop on RESEARCH IN SHALLOW MARINE AND FRESH WATER SYSTEMS (2010)
    INGV
    Details
    Publication Date: 2017-04-04
    Description: The INGV and the Organizers are pleased to invite you to attend and contribute to the second International Workshop “Research in shallow marine and fresh water systems” taking place in Sicily, Aeolian Islands in October 2010 from the 3rd to the 10th. The workshop will provide the opportunity to meet scientists from different countries with different scientific skills to discuss and to exchange ideas on the scientific results related to the scientific diving activityScientific Diving as a tool “for the purpose” acquires a substantial need of an information exchange among research groups including scientific working methods in various fields of application: geology, chemistry, (micro-)biology, archaeology, geochemistry, environmental sciences, ecology, to name a few. The workshop will merge scientific communications with technical and scientific discussions besides diving excursions at selected sites of different scientific interest.
    Description: UNESCO, Assemblea Regionale Siciliana, Provincia Regionale di Messina,INGV-PEGASO, Eurobuilding, Arenariasabbie, Castalia, Scubapro, IHS, GTA
    Description: Published
    Description: Milazzo (Sicily)
    Description: 5.8. TTC - Biblioteche ed editoria
    Description: open
    Keywords: Chemistry of the waters ; Biogechemistry ; Scientific diving ; Submarine archaeology ; New Technologies ; Biodiversity ; 03. Hydrosphere::03.04. Chemical and biological::03.04.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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  • 5
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    LEAD STANNATE AS COMPONENT OF ANTIQUE YELLOW GLASSY TESSERAE FROM SICILIAN MOSAICS (2023)
    maajournal
    Details
    Publication Date: 2023-02-23
    Description: New investigations carried out on lead stannate (Pb2SnO4) and lead antimonate (Pb2Sb2O7) in yellow mosaic glassy tesserae from archaeological sites of Sicily (Taormina; Lipari, Tusa and Piazza Armerina), dated early than the 4th century AD, allow to confirm the presence of lead stannate in ancient glass dated before the 4th century. The two compounds have been used either as glass opacifiers and colorants. The different refractive index between fine crystals of these compounds and the amorphous glassy matrix, in which they are immerged, prevent the complete light transmittance, giving the typical opaque appearance to the glass. While lead antimonate was used to produce opaque yellow glass from the beginning of glass production up to the Roman period, it was replaced by lead stannate from about the 4th century AD up to the end of the Roman period. Although until today only Lahil et al. (2011) reported the presence of lead stannate in the glass tesserae dated before the 4th century AD, our new results confirm its presence in the investigated yellow tesserae from several mosaics of Sicily dated early than the 4th century AD
    Description: Published
    Description: 31-44
    Description: 7SR AMBIENTE – Servizi e ricerca per la società
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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