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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 151 (1998), S. 495-502 
    ISSN: 1420-9136
    Keywords: Key words: Seismic anisotropy, Pn waves, northern Apennines.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract—Pn travel times recorded by the stations of the Italian seismic network have been used to image the azimuthal variations of seismic velocity in the uppermost mantle beneath the northern part of the Apennine chain. The azimuthal variation of Pn velocity is interpreted here in terms of seismic anisotropy. We have found that about 5% anisotropy characterizes the uppermost mantle of the studied area, and that the fastest direction of Pn follows the arcuate trend of the chain. This suggests that seismic anisotropy is strongly related to the tectonic regime that originated the northern Apennine arc.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 2021-07-14
    Description: Two major deformation belts occur in the portion of the Adriatic Sea offshore the Gargano Promontory. The NE-SW - trending Tremiti Deformation Belt, located north of the Gargano Promontory, originated during the Plio- Quaternary, while the E-W-trending South Gargano Deformation Belt, located south of the Gargano Promontory, formed in a time span from Eocene to Early Pliocene. These deformation belts may have originated by tectonic inversion of Mesozoic extensional faults. This inversion tectonics, of Tertiary age, can be related to the evolution of the fold-and thrust belts surrounding the Adriatic Sea. The whole of the study area is, at present, seismically active and represents a preferential site of deformation.
    Description: Published
    Description: 573-578
    Description: open
    Keywords: southern Adriatic Sea ; foreland tectonics ; 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 3
    Publication Date: 2021-07-14
    Description: Two major deformation belts occur in the portion of the Adriatic Sea offshore the Gargano Promontory. Although these two belts display similar characters on seismic profiles, they are different in other respects. The NE-SWtrending Tremiti Deformation Belt, located north of the Gargano Promontory, originated during the Plio-Quaternary, while the E-W-trending South Gargano Deformation Belt, located south of the Gargano Promontory, formed in a time span that goes from Eocene to early Pliocene. On the ground of structural and stratigrafic evidence these deformation belts are interpreted as originated by tectonic inversion of Mesozoic extensional faults. This inversion tectonics, of Tertiary age, can be related to the evolution of the fold-and-thrust belts that surround the Adriatic Sea. A moderate seismic activity, recorded around the Tremiti Island, and historical seismological data suggest that the whole of study area is, at present, seismically active. Therefore, this portion of the Adriatic block still represents a preferental site of deformation.
    Description: Published
    Description: 229-247
    Description: JCR Journal
    Description: open
    Keywords: southern Adriatic Sea ; foreland deformation ; 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 4
    Publication Date: 2021-07-14
    Description: L'evoluzione tettonica delllAdriatico meridionale à stata studiata attraverso l'interpretazione di profili sismici a riflessione e l'analisi di pozzi per l'esplorazione. Durante il Mesozoico quest'area à stata interessata dal processo di rifting che ha portato all'apertura della Tetide. Questa tettonica estensionale ha generato un bacino pelagico epicontinentale bordato da piattaforme carbonatiche, il cui margine sud-occidentale à tracciabile con l'ausilio dei profili sismici. L'area di piattaforma e quella bacinale si comportano in maniera diversa quando coinvolte nell'orogenesi alpina. Nel Cenozoico l'Adriatico meridionale diventa un bacino di avanfossa legato alla catena Ellenico-Dinarica, il cui fronte à presente in prossimità della costa albanese. Lungo tale fronte, che à tuttora sismicamente attivo, sono presenti delle marcate differenze di stile strutturale che sembrano imputabili alla strutturazione mesozoica in piattaforma e bacino. Il bacino di avanfossa contiene sedimenti clastici oligocenico-quaternari e gli spessori massimi, fino a 8-10 km, si trovano al disopra delle aree bacinali mesozoiche. Nei pressi della costa pugliese e in particolare a sud del promontorio garganico, in posizione di avampaese rispetto alla catena albanese, si osservano strutture plicative legate a faglie inverse. Si ritiene che tali strutture, di età eocenica- pliocenica inferiore, siano dovute alla propagazione in avampaese di sforzi compressivi originatisi nelle zone di catena.
    Description: Published
    Description: 227-237
    Description: open
    Keywords: Adriatico meridionale ; sismica a riflessione ; 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 5
    Publication Date: 2017-04-04
    Description: The Adriatic microplate is considered in literature as a block relatively undeformed and aseismic with unitary dynamical behaviour. Nevertheless suchmodel is inadequate to justify the recent seismicity of the Adriatic basin. Recent mesostructural analyses are showing a continuous strain boundary all around the Southern Adriatic platform. Several structures were recognized continuously outcropping from the Southern Dalmatian coastline (Kotor zone) to Split- Sibenik area and, across the Adriatic isles, until the Tremiti Islands and the Gargano-Murge regions. Data point out a centripetal trend of the Dinaric and Apenninic units, delimited to the north by ductile and brittle strain belts. These belts seem to set apart the southern block and to allow the release from the northern structures. The agreement between the geological-structural and seismological data allows to identify the Southern Adriatic block as an indipendent crustal structure, divided from the northern one by strike-slip faults. The Southern Adriatic block is able to condition the structural evolution of the neighbouring areas.
    Description: Published
    Description: Siena, Italia
    Description: open
    Keywords: Adriatic Sea ; seismotectonics ; 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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