Search results for " Tectonics"
showing 6 items of 136 documents
Tectono-stratigraphic evolution of a basin generated by transpression: the case of the Early Pliocene Lascari Basin (northern Sicily)
2011
Integrated stratigraphy and structural analysis carried out in the Madonie Mts. (Northern Sicily) is aimed to the description of a syn-sedimentary tectonic event, recorded in a small infra-pliocene basin restricted to the Lascari Syncline core. The onset and evolution of the basin was driven by transpressive tectonics, generating a lens-shaped, deep and narrow tectonic depression, bounded by steep and high, tectonically controlled slopes, also reflected in the present-day topography of the area. During the genesis of the basin, the tectonic control interferes with a dramatic sea level oscillation during the Messinian-Early Pliocene time interval. In this paper, the syn-tectonic deposits of …
Tectonique salifère et déformation gravitaire de la marge passive sud-gabonaise de l'Albien au Turonien (secteur de Mayumba) Salt tectonic and thin-s…
2003
International audience; L'observation de données sismiques de bonne qualité relatives à la marge passive sud-gabonaise montre : 1) les structures extensives, compressives et inversives albo-turoniennes, associées à la tectonique gravitaire au-dessus du niveau salifère Ezanga (Aptien supérieur). D'est en ouest, ces structures synsédimentaires, d'échelle kilo-métrique, sont en blocs basculés, en anticlinaux, en roll over, en " carapace de tortue ", de nouveau en plis et failles inverses, et enfin en langues de sel déversées vers l'ouest. 2) l'influence du niveau salifère sur la structuration gravitaire ; 3) l'héritage passif syn-rift au niveau des zones hautes anté-salifères qui favorisent la…
Integrated analyses of syn-tectonic basin fill to costrain the deformation evolution in a fold thrust belt: field examples from the sicilian chain
2011
Seismotectonics in the North-Western Sicily Continental Margin: implications for Geohazard assessment
2017
Active processes in the Northern Sicily Continental Margin (NSCM) have been analysed to produce a seismotectonic map, in order to obtain a useful tool for the assessment of the seismic hazard of the sea-land region. The seismotectonic map is composed of overlapping layers that represent the distribution of different features, such as lithostratigraphy, tectonic elements, seismicity, heat flow, gravimetry, magnetometry, Moho depth, horizontal and vertical movements, submarine landslides, fluid emissions, outlining the mutual relationship and the active structures. The NSCM is suitable to test this approach because it’s located in a transitional area between the Sicilian-Maghrebian chain to t…
SEISMOTECTONIC MAP OF THE NORTHERN SICILY CONTINENTAL MARGIN (NSCM) AND IMPLICATIONS FOR GEOHAZARD ASSESSMENT
2018
The Sicily dominates the central Mediterranean Sea. The Northern Sicily Continental Margin (NSCM) is a segment of the Appeninic-Tyrrhenian System whose upbuilding refers to both the postcollisional convergence between Africa and a very complex “European” crust (Bonardi et al., 2001) or AlKaPeKa (sensu Boullin, 1986) and the opening of the Tyrrhenian back-arc basin. Seismostratigraphic and structural analysis of a large number of available (from ViDePi project) and unpublished (from Department of Earth and Marine Science of the University of Palermo) multichannel seismic reflection profiles acquired across the NSCM, allow us to produce an accurate seismotectonic map, in order to obtain a use…
La “Dorsale di Camporeale” (Sicilia NW):significato strutturale nel contesto della tettonica deep-seated.
2008
The “Camporeale Ridge” (NW Sicily): structural significance within deep-seated tectonics. The “Camporeale Ridge” is a morphostructural element cropping out in NW Sicily. Detailed structural and stratigraphic analysis carried out in the study area allows us to reconstruct a main E-W-trending anticline partially exposed along the ridge. Its development is due to the action of high-angle transpressive faults which bound both northwards and southwards site of the ridge. Seismic reflection profile crossing the study area images a tectonic stack made up of carbonates rocks (Trapanese Units, TP) overlain a numidian flysch and Neogene terrigenous units along a low angle thrust plane. The profile im…