407 research outputs found
Simbologie sonore
No full textRassegna di alcune fra le più evidenti "simbologie sonore" (vocali e strumentali) riscontrabili nella partitura del Singspiel "Die Zauberflöte" di W. A. Mozart (1791
La miniera di asfalto di Filettino (FR)
No full textLa miniera di asfalto di Filettino è situata sui M.
Simbruini, nei pressi delle sorgenti del fiume Aniene. L’asfalto
nell’area venne scoperto già nel XVIII secolo e descritto per la
prima volta da B. Gandolfi nel 1789. Il bitume impregna le dolomie
triassiche che affiorano estesamente nell’area; la sua
messa in posto è favorita dall’intensa fratturazione delle dolomie,
dovuta alla presenza di complesse strutture tettoniche. I
primi tentativi di sfruttamento della miniera risalgono al periodo
1847-1850, ma con risultati poco soddisfacenti. Nel 1879
la miniera venne acquisita dalla società Missori & Righetti, che
la tenne in esercizio, probabilmente intermittente, fino al 1900.
La miniera venne ceduta nel 1901 e successivamente cambiò
più volte proprietà. La coltivazione del bitume continuò discontinuamente
fino ai primi anni ‘30 del XX secolo, quando in conseguenza
delle mutate condizioni socioeconomiche la miniera,
non più redditizia, venne chiusa definitivamente
La grotta di Collepardo (Monti Ernici, FR)
No full textThe Collepardo cave is a karst hole, located south
of the Collepardo village (Frosinone province), in the canyon
of the Fiume creek, tributary of the Cosa river. It is caved in
strongly fractured Cretaceous limestone, separated from Jurassic
and Miocene carbonates through tectonic lineaments. The
cave mouth is roughly triangular, with maximum width at the
base about 11 m and maximum height about 7 m; within the
cave different halls are distinguished, separated by concretions
and collapse breccias. One hall is not accessible for the preservation
of a bat colony. The historical importance of the Collepardo
cave is due to the finding of human and mammal bones
and manufacts of the Bronze Age. Moreover, it was a renowned
destination of famous European voyagers in the 18th
and 19th centuries
The role played by varying trophic conditions within the same rift basin in the development of carbonate bodies fringing different footwall blocks: the Lower Caloveto Fm. (Longobucco Basin - Sila Greca, Calabria).
No full textConstraining the slip rate of Jurassic rift faults through the drowning history of a carbonate platform
No full text“Classic” field mapping in sedimentary successions, where lithostratigraphy, biostratigraphy and sedimentology meet, still has potential for producing answers to long-standing problems in basin analysis. In the Northern Apennines of Italy, constraints on the slip rates of Early Jurassic rift faults, related to the embryonic separation of Eurasia and Gondwana, are provided by sedimentology and ammonite biostratigraphy, coupled with the field mapping of exposed tracts of the submarine escarpments and of the clinoform slopes which bordered carbonate footwall blocks. Slip rates of 600–1,000 m/Myr are here computed for Tethyan rift faults, producing >1 km of palaeostructural relief in ~2 million years (earliest Sinemurian: Bucklandi p.p. – Semicostatum p.p. zones)
The First World War of Italian geologists. Between patriotic interventionism and objective pragmatism
No full textScientific studies dealing with the intimate relationship between
geology and First World War appeared in Italy already during the
conflict, or in the first decade after the end of hostilities. In this note we
have focused on two leading Italian geologists, Enrico Fossa-Mancini
and Federico Sacco which dealt with the possible use and importance of
geology in military operations, from territorial defense, to detection of
optimal areas for large troop movements. Despite the similarity of the
subject, and the not excessive time interval between the scripts, the
works of the two authors show a dramatically different approach and
point of arrival. The analysis by Fossa-Mancini is more objective,
detached and pragmatic, being carried out with a ‘clear mind’ after the
end of the conflict. His study is polished and purposeful, identifying the
actions required in time of peace to ‘geologically’ prepare a nation to a
potential conflict. Differently, the analysis by Sacco does not take into
account the real situation highlighted by Fossa-Mancini (e.g. the
complete unpreparedness of the high Italians command in terms of
military use of geology), and uses his writing to exalt the primacy of the
Italian army in the consideration of geology in military conflicts. In
Sacco, geology and the study of the Italian natural territory it is expertly
used as a justification and reason for the war, which it is perceived by
the author as necessary, of liberation and redemption
Mesozoic architecture of a tract of the European-Iberian continental margin. Insights from preserved submarine palaeotopography in the Longobucco Basin (Calabria, Southern Italy)
No full textThe sedimentary successions exposed in northeast Calabria document the Jurassic-Early Cretaceous tectonic-sedimentary evolution of a former segment of the European-Iberian continental margin. They are juxtaposed today to units representing the deformation of the African and Adriatic plates margins as a product of Apenninic crustal shortening. A complex pattern of unconformities reveals a multi-stage tectonic evolution during the Early Jurassic, which affected the facies and geometries of siliciclastic and carbonate successions deposited in syn- and post-rift environments ranging from fluvial to deep marine. Late Sinemurian/Early Pliensbachian normal faulting resulted in exposure of the Hercynian basement at the sea-floor, which was onlapped by marine basin-fill units. Shallow-water carbonate aprons and reefs developed in response to the production of new accommodation space, fringing the newborn islands which represent structural highs made of Paleozoic crystalline and metamorphic rock. Their drowning and fragmentation in the Toarcian led to the development of thin caps of Rosso Ammonitico facies. Coeval to these deposits, a thick (> 1 km) hemipelagic/siliciclastic succession was sedimented in neighboring hanging wall basins, which would ultimately merge with the structural high successions. Footwall blocks of the Early Jurassic rift, made of Paleozoic basement and basin-margin border faults with their onlapping basin-fill formations, are found today at the hanging wall of Miocene thrusts, overlying younger (Middle/Late Jurassic to Late Paleogene) folded basinal sediments. This paper makes use of selected case examples to describe the richly diverse set of features, ranging from paleontology to sedimentology, to structural geology, which are associated with the field identification of basin-margin unconformities. Our data provide key constraints for restoring the pre-orogenic architecture of a continental margin facing a branch of the Liguria-Piedmont ocean in the Western Tethys, and for estimating displacements and slip rates along synsedimentary faults
Cenozoic multiphase orogenic deformations in Northern Calabria Arc: hints from geological mapping in the Longobucco Basin
No full textModello di dati GIS per studi di qualità dell’aria basati su simulazioni modellistiche della dispersione di inquinanti
No full textA geographic data model has been set up, to support display and analysis of air dispersion simulations. The goal was to create a global environment where to manage input data to the model and model results, to perform spatial analyses and to evaluate the risk coming from the modelled pollution field, for people (exposure) and environment. The GIS model was also set up to include epidemiological data to be correlated with exposure estimates. The geographical database has been tested by populating it with data for a case study located on the industrial area of Terni, where air dispersion simulations were performed. The data model will be the basis for the GIS aimed to manage information coming from the LIFE+2009 Project "Population Exposure to PAH" (EXPAH), recently approved
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