Alban Volcano of Rome
http://vulcanoalbano.altervista.org/
Is in Italian. It contains lots of interesting fact about Alban Hills.
Translated with Google. Is too long for me. I fix some words whenever is necessary.
THE VOLCANIC RISK IN THE DORMANT SYSTEM OF THE ALBAN HILLS OF ROME (di Daniele Bianchino)
Volcanism in Italy has been intensely active in the last million years, and even where it has ceased continues to affect the human cities that have arisen there. This report, based on the recent studies of the Colli Albani volcanic complex in Rome, does not want to be a disinformative or allarmistic site, but describes the real volcanic risk that may lie in the future on a millenary city at the foot of a quiescent volcano, very different from other volcanoes in Italy. The volcanic centers along the Tyrrhenian Italy developed in a region characterized since the Miocene-Quaternary by an extensional tectonics, linked to the eastward migration of the Apennine chain and to the contemporary openings of the Tyrrhenian Sea. Around 500,000 years ago, much of Lazio was shattered by volcanic eruptions. In fact, to the intense explosive activity of the Albano volcano south of Rome, the equally violent one of the volcanoes Vulsini, Cimini and Sabatini north of the Tiber is almost contemporary. Latium has 7 distinct volcanic buildings, divided into four main complexes: Vulsino, Cimino, Sabatino, Albano, belonging to the Roman Magmatic Province, characterized by unusually potassium-rich magmas (volcanic potassic and ultrapotassic rocks). This province continues to the south with the volcano of Roccamonfina, Ischia, the Campi Flegrei and the Vesuvio where it is indicated with the name of Campanian Magmatic Province. Several calderas (most of them occupied by small lakes) and small volcanoes (scoria cones) of ash belong to the major buildings mentioned above. The activity of the entire volcanic province was mostly explosive, with numerous Plinian and Ultraplinian eruptions associated with caldera collapses. The rocks consist mostly of ignimbritic coats, pyroclastic deposits and scarce lava flows:
The only Italian Volcanoes in perpetual activity are Stromboli and Etna, followed by Vulcano, which has intense sulfurous fumarolic activity, but no eruptions. Pantelleria, Graham and Lipari are quiescent. Among the volcanoes of center-south of Italy, the Albano volcano is one of the few dormant volcanoes, along with Vesuvius, Ischia and Campi Flegrei, although the expected return times for any of its eruptions are much longer than the latter. Albano Volcano, also called the Latium Volcano, the Volcanic Complex of Alban Hills (popularly known as "Castelli Romani" - Roman Castles), rises 15 km south of Rome; Formed by various overlapping calderas, the result of numerous eruptions, it is one of the largest volcanoes in Italy, characterized by an imposing building that among the volcanoes of central Italy is the one that has the largest volume of lava and pyroclastic emitted (about 300 Km3).
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