ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 2020-2024  (6)
  • 1
    facet.materialart.
    Unknown
    Massive dolomites in the Messinian evaporitic sequence (Sicily, Italy): multi-analytical characterization and implications for the dolomitization processes (2020)
    Springer
    Details
    Publication Date: 2023-10-26
    Description: A combined geochemical, mineralogical, petrographic and geological approach has allowed to constrain the dolomitization process responsible for the formation of massive dolomitic body within the Messinian evaporitic series. We focused our investigations on an example of massive dolomite body, outcropping over the marginal area of the evaporitic basin in the Peloritani Mountains (NE area of Sicily region, Italy). Field observations allowed recognizing several sedimentary structures, such as erosion surfaces, lenses of conglomerates and ripples highlighting a clastic origin. The petrographic study revealed fne-grained and massive structure, scarce porosity, light to pink color and absence of micro-fossils. The chondritenormalized trace element pattern shows a general enrichment in LREE and depletion in HREE. The isotopic signatures of the studied dolomites (δ18O=– 4.38–1.24‰, V-PDB; δ13C=– 1.48–1.94‰, V-PDB) are comparable with those of type-3 “Calcare di Base” which is the common reference to record the Messinian salinity crisis. The positive co-variant relationship between the δ18O and δ13C values suggests a dolomitization process in the seawater/freshwater mixing zone. The occurrence of the studied dolomites in the evaporitic sequence coupled with the results we gained point towards an origin from “early diagenetic” processes. As a consequence, a model explaining the genetic mechanism for the studied dolomitic rocks can be essentially summarized as: (1) the massive dolostones were originally deposited as evaporitic limestones under rather highsalinity conditions; (2) the dolomitization process occurred in the seawater/freshwater mixing zone that provided Mg-rich fuids over uplifted submarine masses.
    Description: Published
    Description: id 29
    Description: 7SR AMBIENTE – Servizi e ricerca per la società
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 2
    facet.materialart.
    Unknown
    Contribution of soil compositions, harvested times and varieties on chemical fingerprint of Italian and Turkish citrus cultivars (2021)
    Wiley
    Details
    Publication Date: 2023-10-26
    Description: This paper aims to define the stability over the time of chemical elemental patterns in some citrus varieties of PGI (Protected Geographical Indication) and not PGI Interdonato and Lunario cultivars coming from Italy and Turkey and to set up a range of markers useful to trace their geographical origin. During the 2015–2017 growing seasons, all fruits were collected and subjected to Inductively Coupled Mass spectrom etry (ICP-MS) analysis, in order to determine the multielemental chemical profiles. The chemical variabil ity was calculated for each element by Multi-way analysis of variance. The results highlighted how the measured Cr, Ni, Al, K, Fe and Zn levels mainly depend on the soil composition and the fingerprint allow to trace the geographical origins. Moreover, the stepwise linear discriminant analysis (SLDA) has allowed to correctly classify the 100% of lemon pulps provenances, based on Ni, Al, K, Ca and Na con tents. Finally, our study demonstrates the role played by harvest years, variety and soils composition whose interaction contributed to define the chemical fingerprints.
    Description: Published
    Description: 2628-2639
    Description: 6A. Geochimica per l'ambiente e geologia medica
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 3
    facet.materialart.
    Unknown
    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
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 4
    facet.materialart.
    Unknown
    Archaeometric constraints on the architectural elements from the submerged installation discovered at the harbor of Lipari (Aeolian Archipelago, Italy) (2020)
    Univ. La Sapienza
    Details
    Publication Date: 2023-10-13
    Description: Submarine surveys, started in 2008 during the preliminary excavations preceding the construction of a new pier in the port of Lipari Island (Italy), brought to light the presence of large submerged remains, dated to the Roman age, in the base of typological features of the related pottery fragment styles. The archaeological discoveries included the find of structural elements - interpreted in the literature as part of a monumental building - located at the wharf terminal. Four of these structural elements, made up of volcanic rocks, which are now stored at the Lipari Museum, have been examined both from analytical and architectural points of view. To define the provenance of the rocks, petrographic and mineralogical investigations have been performed on the collected samples. The results obtained indicate that the rocks could be traced to the cordierite lava rocks outcropping at Fuardo Valley, in the SW area of the Lipari Island. The use of these rocks as building material was already attested for other artefacts found at Lipari and Messina (Sicily) and at Lamezia (Calabria), but no historical sources refer to any mining activities. However, the presence of working traces observable at Fuardo Valley and Pulera districts and the overall collected information suggest that the cordierite-lava flow was extensively used as stone quarry during historical times. From the stylistic point of view, the studied structural elements made with the Fuardo stone show architectural features that allowed defining them as column bases dating to the Roman Imperial age.
    Description: Published
    Description: 183-194
    Description: 7SR AMBIENTE – Servizi e ricerca per la società
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 5
    facet.materialart.
    Unknown
    New perspectives for the green economy in Sicily (2023)
    IOP
    Details
    Publication Date: 2023-01-16
    Description: Geopolymers are synthetic materials, which attract increasing interest because they represent a supplementary cementitious material as an alternative to Portland cement. Geopolymers are considered as environmentally friendly materials, due to the low processing temperature and the absence of CO2 gas emissions. These ecological features, linked to their technical properties, such as high strength, high acid resistance, and/or high-temperature resistance, make them very innovative technological materials. In addition, geopolymers show good performance if realized by the utilization of secondary raw materials (industrial wastes like fly ash or slag), thus improving strong interest in such technology from countries with growing industrialization. Here, in order to reduce global impacts and to stimulate the Sicilian green economy, we provide the evaluation of the Life Cycle Assessment (LCA) through the employ of local raw materials to produce geopolymers in Sicily. To reach this aim, geopolymers have been produced in collaboration with a Sicilian cement industry, through the use of local raw materials (furnace blast slag from Sicilian steelworks and Calabrian kaolinite) and the construction of a pilot plant. The obtained results show, for different scenarios, a considerable reduction of both CO2 emissions and energy consumption, but also a general improvement of the environmental indicators.
    Description: Published
    Description: 012006
    Description: 6A. Geochimica per l'ambiente e geologia medica
    Description: N/A or not JCR
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 6
    facet.materialart.
    Unknown
    Distribution of soil gas radon concentration in north-eastern Sicily (Italy): hazard evaluation and tectonic implications (2024)
    Springer-Nature
    Details
    Publication Date: 2024-05-16
    Description: Radon measurements in soil gases were carried out along the Tyrrhenian margin of north-eastern Sicily (southern Apennines of Italy), one of the most tectonically and seismically active areas within the central Mediterranean region. The collected data highlight an ~ NW–SE oriented zone located to the south of the Milazzo Peninsula marked by intense soil radon degassing. Concentrations of 222Rn and 220Rn were derived to be in the range of 0.69–81.3 kBq m− 3 and 2.63–123.48 kBq m− 3, respectively. The widespread radon release seems to be induced by the uprising of deep-originated fluids along faults and joints, and it is favoured by the high permeability of the outcropping alluvial Quaternary sediments. Moreover, the potential tectonic structure promoting the soil radon degassing may act as the “silent” on-land prolongation of the Vulcano-Milazzo fault zone (VMFZ), a transtensional tectonic element located in the Gulf of Patti and belonging to the Aeolian–Tindari– Letojanni System (ATLFS). The collected results are in accordance with previous studies showing the close relationship between regional degassing and tectonic activity. Periodical and continuous monitoring of radon emission over the area is considered of basic importance to better assess the radiological/health hazard for the population, which in this study was primarily evaluated from low to moderate in terms of first-level screening, as well as in view of possible development of the seismogenic process that can intensify the releasing of endogenous fluids.
    Description: Published
    Description: 273
    Description: JCR Journal
    Keywords: Natural radioactivity ; Soil radon degassing ; Radiological hazard ; Deep-originated volatiles
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...