47,317 research outputs found
Adm. R.P.F. Lucii Ferraris Soler-Alexandrini Ordinis Minor. Regular. Observ. S.P. Francisci ... Prompta bibliotheca canonica, juridica, moralis, theologica nec non ascetica, polemica, rubricistica, historica ... : in octo tomos distributa : tomus octavus, complectens decreta et resolutiones Sacrar. Congr. nec non indicem generalem totius operis.
No full textDatos de ed. preceden a: "tomus octavus..."Texto a dos colPort. con grab. xilSign.: *-2*\p4\s, A-F\p6\s, G-Z\p4\s, 2A-2P\p4\sSign.: *-2*>2643
LOCATING COALESCING SINGULAR VALUES OF LARGE TWO-PARAMETER MATRICES
No full textConsider a matrix valued function , , smoothly
depending on parameters , where is simply
connected and bounded. We consider a technique to locate parameter values where
some of the dominant () singular values of coalesce, in the
specific case when is large and
Global Newton-type methods and semismooth reformulations for NCP
No full textIt is known that a nonlinear complementarity problem (NCP) can be reformulated as a semismooth system of nonlinear equations by using a so-called NCP-function. Global Newton-type methods for solving NCP via semismooth reformulation need to use a merit function, which is usually required to be continuously differentiable. In this paper we present a global Newton-type method which does not require the differentiability for the merit function used in the line-search procedure. The method is used to numerically compare the effectiveness of two NCP-functions widely discussed in literature, the minimum function and the Fischer–Burmeister function. The results on several examples allow to gain some new acquaintance of the respective numerical advantages of the two functions
Santuario
No full textSign.: []\p4\s, b-f\p8\s, g\p2\s, A-Z\p8\s, 2A-2N\p8\s, 2O\p4\sTexto a dos colPort. con grab. calc. (posible marca), representando la FortalezaAnte
Synsedimentary-tectonic, soft-sediment deformation and volcanism in the rifted Tethyan margin from the Upper Triassic–Middle Jurassic deep-water carbonates in Central Sicily
No full textThe Pizzo Lupo section (Sicanian Mts, central Sicily) is an Upper Triassic–Lower Jurassic condensed deep-water succession, where the relationships among synsedimentary tectonic, soft-sediment deformations, volcanism and lithological changes reflect the evolution of a rift-basin.
The morphostructural setting of the studied basin appears as a gently dipping slopewhere a fault-delimited area (graben to halfgraben) was developed. The instability of the sea floor, related to the seismic shocks, was the cause of the gravity-driven deformational sedimentary structures (slumping, breccia channelized bodies). The partly stratified basaltic rocks,with disorganized and chaotic stratification, suggest the occurrence of a volcanic complex located in neighbouring areas.
A regional comparison with the tectono-sedimentary evolution of the pelagic drowning platform succession
(i.e. Trapanese domain Auct.), outcropping in adjacent areas, suggests that these different domains were close to each other during the studied period forming a stepped margin platform-to-basin system.
The environmental changes, synsedimentary tectonic activity and gravity-driven phenomena were the result of repeated events occurred during a long time interval, spanning from Late Triassic to Early Jurassic
Multidisciplinary approach for 3D geological model reconstruction: the example of Mt. San Calogero (Sciacca, Southwestern Sicily)
No full textMultidisciplinary approach for 3D geological model reconstruction: the example of Mt. San
Calogero (Sciacca, Southwestern Sicily
Mesozoic tectonics and volcanism from Tethyan rifted continental margins in western Sicily
No full textTectonic and volcanic features from the Jurassic-Cretaceous carbonate successions of Rocca
Busambra, Balatelle Mount and Vicari-Roccapalumba (central-western Sicily), are here described.
These areas represent the easternmost outcrops of the Trapanese domain in Sicily. The Trapanese
succession consists of shallow to deep-water Meso-Cenozoic deposits formed in a carbonate platform
to pelagic plateau depositional setting. Detailed field work and structural analysis detected indicate the
occurrence of paleofaults with different orientation, unconformity surfaces, lateral facies changes,
resedimented materials and volcanic products (pillow lavas and tuffitic deposits). These data
combined with facies and physical-stratigraphy analysis, allow for the distinction of different tectono-
stratigraphic settings. A structural low, represented by Monte Balatelle outcrop, is filled with thick
bodies of pillow lava and reworked deposits; it appears bordered by two main structural highs: Rocca
Busambra, an articulate carbonate pelagic platform with stepped fault margin, and Vicari-
Roccapalumba a flank of a structural high, where the volcano-clastic deposits interlayered with reef-
reworked materials suggest the occurrence of a submarine volcano, evolving to an atoll-type carbonate
shelf setting. Tectonic pulses and magmatic events punctuated the sedimentary evolution during Early
Jurassic, Middle-Late Jurassic, Early and Late Cretaceous.
The horst and graben connected by steeped margin reconstructed morphostructural setting and the
occurrence of distinct types of volcanic products suggest that the study areas could represent a sector
of the continental margin near the basinal areas of the Jurassic-Cretaceous southern Tethyan passive
margin
High-resolution 3D model of Plio-Pleistocene stratigraphy succesion in Southwestern Sicily foreland-basin system
No full textThe southwestern Sicily represents a key sector for studying the Late Pliocene-Pleistocene stratigraphic evolution of the Sicilian foreland-basin system. The data collected during the realization of the sheets n.628 “Sciacca” and n.618 “Castelvetrano” (CARG project) revealed important sedimentological, stratigraphic, and tectonic features, enabling the accurate geological reconstruction of two sedimentary basins (Menfi and Ribera basin) set on different sectors of the Sicilian Fold and Thrust Belt (FTB). Both are located in the outer sector of the FTB, but the Menfi succession accumulated on a deformed carbonate substrate constituted by the Saccense Domain, while the Ribera succession covers the deformed substrate constituted by the Gela Thrust wedge.
One of the most innovative aspects of this study is represented by the 3D geological model reconstruction. By integrating data from geological mapping, seismic reflection profiles, well logs, geophysical surveys, geological cross-sections a detailed three-dimensional model was produced, greatly improving the understanding of the sedimentary and structural dynamics of the southwestern Sicily.
In the Menfi basin, the Late Pliocene-Pleistocene succession includes the marnoso-arenacea del Belice formation (Piacenzian-Gelasian), constituted by hemipelagic clayey marls, turbiditic sandy silts, and breccias, transitioning to resedimented arenites and calcarenites. This unit passes upward to the Agrigento formation (Calabrian), consisting of hemipelagic clays and marls with intercalated sands and bio-calcarenites.
In the south-eastern sector, the Ribera basin succession includes the Monte Narbone formation (Middle Piacenzian-Early Calabrian), composed of marls and silty clays alternating with sapropelitic layers. Upward, this latter unit is overlain by the Agrigento formation, here featured by thick bio-calcarenites, with cross-lamination and prograding geometries, alternated with sandy marls and clays.
The 3D geo-structural model of the study area well shows as the Monte San Calogero, a ramp anticline with double vergence and left-lateral transpressive kinematics, acts as a structural high separating these two basins. Data revealed that the Menfi sedimentary basin thickens from west to east, reaching about 1250 meters, while the Ribera basin reaches the thickness of 2200 meters, in the offshore sector.
The realization of 3D geological model and the creation of thickness maps for the Plio-Pleistocene sedimentary sequence provided crucial insights into sedimentary and tectonic processes, significantly enhancing the understanding of the Sicilian FTB evolution
Constraining the onset and development of "deep-seated" tectonics in the Sicilian thrust belt: field data from northern Sicily
No full text- …
