Search results for "Tectonic"
showing 10 items of 470 documents
Growth and geomorphic evolution of the Ustica volcanic complex at the Africa-Europe plate margin (Tyrrhenian Sea)
2021
18 pages, 13 figures, 1 table
The southern Tyrrhenian Sea margin an example of lithospheric scale strike-slip duplex
2010
The southern Tyrrhenian Sea margin is dominated by deformations whose kinematics are relatively poorly constrained, and different models have been proposed to account for its recent evolution. Analysis of new structural and space geodesy data, combined with available geophysical information, reveal a deformation field characterised by subhorizontal NW-SE directed shortening and SW-NE directed extension. The main recognised regional-scale structure comprises E-W trending fault zones, namely the Ustica-Eolie Line and the Mt. Kumeta-Alcantara Line, connected by the NW-SE trending Marettimo, Trapani, San Vito, Palermo, Gratteri-Mt. Mufara and Eolie faults. This fault network displays a remarkab…
La Sala del Consell del antiguo ayuntamiento de Valencia, un espacio de representación pública olvidado
2016
[ES] El edificio del antiguo Ayuntamiento de Valencia, denominado Casa de la Ciudad o Sala de la Ciudad era, junto al de Barcelona, probablemente uno de los más grandes y antiguos de España. La falta de espacio y algunos problemas estructurales llevaron a su demolición en 1860, perdiéndose un importante referente en su categoría. En este texto se analiza a partir de fuentes documentales y paralelos arquitectónicos la primitiva Sala del Consejo. También se trata sobre los cuatro retratos de reyes del MNAC, algunos fragmentos tallados en madera que se conservan en las colecciones municipales, el Museo Arqueológico Nacional y adheridos a una de las rocas de la procesión del Corpus Christi.
Los temas de la pintura de paisaje del siglo XIX en Valencia
1995
[ES] Dede que, a mediados del siglo XIX, Carlos de Haes y sus enseñanzas irrumpieran en la pintura de paisaje española, el género experimentó una renovación que llegó también a la escuela valenciana. Así, nuestros pintores abandonaron la visión romática del paisaje y se aproximaron a él de un modo más realista. En este estudio se hace un breve repaso de los temas predilectos de los paisajistas valencianos, desde los poblados con ruinas, castillos o edificios religiosos que justificaban de algún modo el propio cuadro, hasta aquéllos escogidos por su belleza natural. Dentro de estos últimos destaca la Huerta de Valencia, un asunto revestido entonces de modernidad que, finalmente, desaprovecha…
A facies distribution model controlled by a tectonically inherited sea bottom topography in the carbonate rimmed shelf of the Upper Tithonian–Valangi…
2016
The Upper Tithonian–Valanginian shallow-water carbonates outcropping in the Palermo Mts (NW Sicily) consist of several facies associations reflecting different depositional environments of a carbonate rimmed shelf, pertaining to the Southern Tethyan continental margin. The reconstructed depositional model, based on the sedimentological features, cyclic facies arrangement and biota distribution, shows that a wide protected lagoon, dominated by algae, molluscs and scattered patch reefs, was bordered landward by a tidal flat, where stromatolitic algal mats were cyclically subaerial exposed, and seaward by a marine sand belt and reef complex. Oolitic packstone-grainstone lithofacies, cyclically…
The Permocarboniferous Basin and Range Province of Europe. An Application op Plate Tectonics
1976
Distribution and development of European late Hercynian intermontane troughs and associated volcanicity are related to an upper mantle diapir which formed above two subduction zones during the Hercynian cycle of orogenesis. Lateral spreading of the diapir caused regional extension of the previously folded crust and enabled tholeiitic magmas from the upper mantle and rhyolitic magmas from the lower crust to reach the surface.
Diffuse soil CO2 degassing from Linosa island
2014
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Deep controls on Foreland Basin System evolution along the Sicily Thrust Belt
2014
The palinspastic restoration of the Sicilian crustal geological cross section (Catalano et al., 2013) points out two subsequent main thrust (MT1 and MT2) active during the Neogene tectonic evolution as well as the decrease of slip and shortening rate estimated for MT2 with respect to MT1 early main thrust. During orogenic building, syn-tectonic deposits are accumulated inside wedge-top-basin that grow on top of thrust sheets. Sedimentary and stratigraphic features of wedge-top basin change trough time following fold and thrust belt evolution. Neogene-Quaternary syn- tectonic successions (terrigenous, evaporitic, hemipelagic and shallow water deposits) extensively crop-out, in more or less w…
Geodetic and geological evidences of activetectonics in western Sicily (Italy): insights onthe seismogenic source of the 1968 Beliceearthquake sequen…
2013
The night between the January 14th and 15th 1968, a wide area of western Sicily (Italy) was shaken by a strong earthquake, the main shock of a seismic crisis that hit the region until the January 25th. The disastrous event, that is the strongest seismic event recorded in Western Sicily in historical times, caused about 370 deaths and the destruction of many villages facing the Belice river valley, which was the epicentral area for this unexpected natural disaster. The seismic sequence consisted of a main shock with M=5.9 and a series of pre-shock and aftershocks that were clustered along a NE-SW alignment. Focal planes solutions provided by many authors in the last decades show controversia…
Spatial Coherence of Tropical Rainfall at the Regional Scale
2007
AbstractThis study examines the spatial coherence characteristics of daily station observations of rainfall in five tropical regions during the principal rainfall season(s): the Brazilian Nordeste, Senegal, Kenya, northwestern India, and northern Queensland. The rainfall networks include between 9 and 81 stations, and 29–70 seasons of observations. Seasonal-mean rainfall totals are decomposed in terms of daily rainfall frequency (i.e., the number of wet days) and mean intensity (i.e., the mean rainfall amount on wet days).Despite the diverse spatiotemporal sampling, orography, and land cover between regions, three general results emerge. 1) Interannual anomalies of rainfall frequency are us…