Late Quaternary activity along the Scorciabuoi Fault (Southern Italy) as inferred from electrical resistivity tomographies

The Scorciabuoi Fault is one of the major tectonic structures affecting the Southern Apennines, Italy. Across its central sector, we performed several electrical resistivity tomographies with different electrode spacing (5 and 10 m) and using a multielectrode system with 32 electrodes. All tomographies were acquired with two different arrays, the dipole-dipole and the Wenner-Schlumberger. We also tested the different sensitivity of the two arrays with respect to the specific geological conditions and research goals. Detailed geological mapping and two boreholes were used to calibrate the electrical stratigraphy. In all but one tomography (purposely performed off the fault trace), we could recognise an abrupt subvertical lateral variation of the main sedimentary bodies showing the displacement and sharp thickening of the two youngest alluvial bodies in the hanging-wall block. These features are interpreted as evidence of synsedimentary activity of the Scorciabuoi Fault during Late Pleistocene and possibly as recently as Holocene and allow accurate location of the fault trace within the Sauro alluvial plain

The Late Quaternary activity of the Scorciabuoi Fault (Southern Italy) as inferred from morphotectonic investigations and numerical modelling.

Following a detailed morphotectonic analysis of the fluvial terraces of the Sauro River (Basilicata, Southern Italy), the present research documents for the first time the Late Quaternary tectonic activity of the Scorciabuoi Fault and discusses its inferred seismogenic potential. Based on both remote sensing techniques and detailed field investigations, four fill terraces have been recognised and mapped along the Sauro Valley showing differential cumulative displacements across the fault. These terraces are genetically correlated with as many high-stand sea-level periods. Following stratigraphic and geological age constraints and based on the correlation with a sequence of marine and fluvial terraces characterizing the lower Agri Valley, the Sauro terraces likely formed between 80(-100) ka and Present. The inferred long-term slip-rate of the Scorciabuoi Fault ranges between 0.5 and 1.0 mm/a. Numerical simulations based on a crustal elastic deformation model also contribute to separate and tentatively quantify the regional uplift-rate (ca. 1.0-1.4 mm/a) and to improve the overall reconstruction of the Late Quaternary evolution of the area. The synergic but distinct roles played by eustatism, regional uplift and normal faulting are eventually appreciated

Relationships between thetrahedral kink angles and site occupations in C2/c pyroxene from volcanic rocks.

none3The relationships between kinking of the T tetrahedral chain and the site configuration of C2/c pyroxenes from volcanic rocks were investigated, and about two hundred samples were examinated. Kink angle (KA) is defined by the equation KA = arccos [1-c 2/(2d 2)], in which c is the cell edge andd the O3A1–O3A2 distance; in the pyroxenes studied here, it varies from about 164° to about 167°.The ratio betweenc cell edge and O3A1–O3A2 distance depends on the various M1, M2 and T site configurations which, in turn, are related to their different mechanisms of cation substitution. Thec/d ratio varies if isomorphic substitutions involve cations with different charge, while it is quite constant if the substitutions involve cations with the same net charge.Thec/d ratio variation is related to the amount of cation substitution in each crystallographic site, and reaches its maximum range in synthetic and natural end-member pyroxenes.noneSecco L.; Salviulo G.; Princivalle F.Secco, Luciano; Salviulo, Gabriella; Princivalle, F

Late Quaternary activity of the Scorciabuoi Fault, Southern Italy

This work represents a multidisciplinary approach to the study of the Scorciabuoi Fault (Basilicata, Southern Italy), developed in the outer portion of the Lucanian Apennines, close to the boundary between the Apennine Chain and the Bradanic Foredeep

Late Quaternary activity along the Scorciabuoi Fault (Southern Italy) as inferred from electrical resistivity tomographies

The Scorciabuoi Fault is one of the major tectonic structures affecting the Southern Apennines, Italy. Across its central sector, we performed several electrical resistivity tomographies with different electrode spacing (5 and 10 m) and using a multielectrode system with 32 electrodes. All tomographies were acquired with two different arrays, the dipole-dipole and the Wenner-Schlumberger. We also tested the different sensitivity of the two arrays with respect to the specific geological conditions and research goals. Detailed geological mapping and two boreholes were used to calibrate the electrical stratigraphy. In all but one tomography (purposely performed off the fault trace), we could recognise an abrupt subvertical lateral variation of the main sedimentary bodies showing the displacement and sharp thickening of the two youngest alluvial bodies in the hanging-wall block. These features are interpreted as evidence of synsedimentary activity of the Scorciabuoi Fault during Late Pleistocene and possibly as recently as Holocene and allow accurate location of the fault trace within the Sauro alluvial plain

Synthesis and characterization of Iron(III) oxides as supports for Au(0)-based catalysts

A series of iron(III) hydrated oxide/oxyhydroxide/oxide was prepared by precipitation from Fe(III) aqueous solutions, to obtain supports suitable as Au(0)-based catalysts. During synthesis, all parameters -pH, temperature and adding rate - were strictly controlled in order to achieve highly reproducible synthesis. The method of purification was also planned in order to remove nitrate ions that can influence the catalytic activity and/or the support properties, without modifying the structure or particle dimension of the support. Dialysis was identified as the best method for purifying the hydrated oxide/hydroxide, i.e., ferrihydrite and goethite; while ammonium carbonate washing proved to be the most successful for the other hydroxide/oxides. Mossbauer spectroscopy and X-ray powder diffraction pointed out the complexity of all these systems, proving the extreme importance of synthesis temperature for crystallinity, particle dimension, and amount of hydroxide/oxid

Indagini sulle reliquie attribuite a "San Luca Evangelista", Basilica di Santa Giustina in Padova: studio isotopico e microchimico del piombo, della bara e delle epigrafi

Questo lavoro espone i risultati della studio geochimico-isotopico del materiale plumbeo proveniente dalla Basilica di Santa Giustina. Il materiale analizzato e\u2019 rappresentativo della cassa e del coperchio della bara di San Luca; della cassa di san Mattia; delle cupole e delle epigrafi. E\u2019 stato inoltre studiato un campione di carbonato di piombo tolto da incrostazioni dello scheletro. La composizione isotopica del piombo, determinata mediante spettrometria di massa, delle reliquie conservate in Santa Giustina indica che i campioni della cassa e il carbonato di piombo adeso alle ossa del bacino sono uguali e nettamente diversi dai campioni del caperchio. Questi ultimi risultano invece simili ai frammenti della cassa di san Mattia, ritenuta di fattura cinquecentesca. I risultati ottenuti sui campioni delle cupole e delle epigrafi indicano che essi costituiscono un gruppo piuttosto eterogeneo di materiale lavorato e posto in opera in epoca moderna e ottenuto da miscelazione di piombo proveniente da pi\uf9 fonti. I manufatti antichi, rappresentati dalla cassa di san Luca e dal carbonato di piombo di incrostazione dello scheletro, sono riferibili al I-IV secolo d.C. La composiziane isotopica del piombo di tali manufatti nan \ue9 riconducibile alla produzione di specifici giacimenti, ed \ue9 pertanto interpretabile come effetto del riciclaggio di metallo o rottami metallici provenienti dalle varie miniere dell\u2019area mediterranea, un processo molto diffuso durante il periodo imperiale

Studio microstrutturale di antichi manufatti in bronzo: il ripostiglio nei depositi di Frattesina di Fratta Polesine (RO)

Riassunto presentato al Convegno Nazionale AIAr, " INNOVAZIONI TECNOLOGICHE PER I BENI CULTURALI IN ITALIA", Caserta, 16-18 febbraio 200