Search results for "Trias"
showing 10 items of 168 documents
The late Carnian Rhaetian Succession at Pizzo Mondello (Sicani Mountains).
2010
Karstic overprint of Upper Triassic peritidal cycles: The example of the Panormide Carbonate Platform at San Vito lo Capo (Sicily)
2012
Sedimentology and biostratigraphy of a peritidal succession across the Triassic/Jurassic boundary: Monte Sparagio, north western Sicily
2016
A 490 m thick section of shallowing upward peritidal cycles spanning the Triassic-Jurassic boundary is exposed along the northern slope of Mount Sparagio in the San Vito Lo Capo Peninsula (Western Sicily). A detailed microfacies analysis allowed defining the aspects of cyclic sedimentation of this section and especially the stratigraphic occurrence patterns of benthic foraminifera and algae across the T/J boundary. The lower part of cycles commonly shows medium to low energy subtidal facies, typical of the inner lagoon of the carbonate platform. Subtidal facies such as coral bafflestone in some cycles suggest more open lagoonal conditions (patch reefs), while some higher energy layers such …
Correlation between extinction pattern and δ13C fluctuations across the Triassic Jurassic boundary in shallow water settings: a proxy for the present…
2018
With the aim to assess the possible influence of the carbon variations on the benthic communities across the Triassic Jurassic boundary we have carried out sedimentological, biostratigraphic and stable isotope studies on an about 220 m thick peritidal section cropping out in Northwestern Sicily. The subtidal facies of the lower and middle part of this succession show the common occurrence of large and thick megalodontids and a benthic foraminiferal assemblage with Triasina hantkeni and Aulotuortids that supports a Rhaetian age. In the lower part of the succession, a significative biotic perturbation is evidenced by a sudden reduction of the size, shell thickness and abundance of the large m…
Paleokarstic overprint on the Panormide Carbonate Platform (Sicily)around the T/J boundary
2011
Processi paleocarsici e geositi: il caso del “libeccio antico” nel distretto marmifero di Custonaci, Sicilia nord-occidentale
2016
Abstract The Upper Triassic strata that crops out along the northern slope of Monte Sparagio, in the Custonaci “marble” district in northwestern Sicily, show an extensive development of dissolution cavities with a very variable shape and dimensions. Several different types of dissolution morphologies can be differentiated from microkarst to giant caverns. The cavities are filled up by polychrome silts or calcite cements or, in the larger caverns, by collapse breccias. The matrix between the collapse breccias is a polychrome silt that gives rise to an attractive ornamental stone, quarried in the past with the name of “Libeccio Antico”. The diagenetic processes that have controlled the format…
Carbonate platform-basin systems in Sicily around the Triassic/Jurassic boundary: new data from the Campofiorito area (Sicani Mountains, western Sici…
2006
Seismically-induced soft-sediment deformation structures in Upper Triassic deepwater carbonates (Central Sicily)
2016
We describe soft-sediment deformation structures into the Upper Triassic cherty limestone outcropping in the Pizzo Lupo section (Central Sicily, Italy), pertaining to the deep-water palaeodomain of the Southern Tethyan margin. In the study section, mainly consisting of thin-bedded mudstone/marl alternations with bedded chert intercalations, some lithofacies have been separated on the basis of the abundance of the calcium carbonate/clay content and the overall textural features. The deformational structures, displaying different deformational styles as folded and faulted beds, disturbed layers, clastic dikes, and slumps occur mainly in the deformed horizons that involve marl-dominated lithof…
Cesaropapismo y competencia jurisdiccional. Patronato regio contra vicarios apostólicos en Sicilia (siglos XVI-XVII)
2023
The several spiritual and ecclesiastical powers held by the Crown in the Kingdom of Sicily during the early modern age was very often translated into jurisdictional competences precisely among the ecclesiastical courts: each of them tried, indeed, to extend his own prerogatives over forists and crimes in harm of the others, putting its "falcem in alienam messem". The defendants themselves, often clerics, were well aware of this jurisdictional competition and tried, often successfully, to take advantage of it, sometimes involving Roman Congregations and Courts. Other times it was the same Holy See to tackle the Sicilian caesaropapism head on, sending commissars and apostolic vicars in quarre…