http://www.cnr.it/ontology/cnr/individuo/prodotto/ID29389
Eruptive history and petrologic evolution of the Albano multiple maar (Alban hills, central Italy). (Articolo in rivista)
- Type
- Label
- Eruptive history and petrologic evolution of the Albano multiple maar (Alban hills, central Italy). (Articolo in rivista) (literal)
- Anno
- 2006-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1007/s00445-005-0033-6 (literal)
- Alternative label
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- Freda C.; Gaeta M.; Karner D.B.; Marra P.; Renne P.R.; Taddeucci J.; Scarlato P.; Chirstensen J.N.; Dallai L.; (literal)
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Ist Nazl Geofis & Vulcanol, Sez Sismol & Tettonofis, I-00143 Rome, Italy; Univ Roma La Sapienza, Dipartimento Sci Terra, I-00185 Rome, Italy; Sonoma State Univ, Dept Geol, Rohnert Pk, CA 94928 USA; Ist Nazl Geofis & Vulcanol, Sez Sismol & Tettonofis, I-00143 Rome, Italy; Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA; Ist Nazl Geofis & Vulcanol, Sez Sismol & Tettonofis, I-00143 Rome, Italy; Ist Nazl Geofis & Vulcanol, Sez Sismol & Tettonofis, I-00143 Rome, Italy; Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA; CNR, Ist Geol Ambientale & Geoingn, I-00138 Rome, Italy; (literal)
- Titolo
- Eruptive history and petrologic evolution of the Albano multiple maar (Alban hills, central Italy). (literal)
- Abstract
- A comprehensive volcanological study of the Albano multiple maar (Alban Hills, Italy) using (i) Ar-40/Ar-39 geochronology of the most complete stratigraphic section and other proximal and distal outcrops and (ii) petrographic observations, phase analyses of major and trace elements, and Sr and O isotopic analyses of the pyroclastic deposits shows that volcanic activity at Albano was strongly discontinuous, with a first eruptive cycle at 69 +/- 1 ka producing at least two eruptions, and a second cycle with two peaks at 39 +/- 1 and 36 +/- 1 ka producing at least four eruptions. Contrary to previous studies, we did not find evidence of magmatic or hydromagmatic eruptions younger than 36 +/- 1 ka. The activity of Albano was fed by a new batch of primary magma compositionally different from that of the older activity of the Alban Hills; moreover, the REE and Sr-87/Sr-86 data indicate that the Albano magma originated from an enriched metasomatized mantle. According to the modeled liquid line of descent, this magma differentiated under the influence of magma/limestone wall rock interaction. Our detailed eruptive and petrologic reconstruction of the Albano Maar evolution substantiates the dormant state of the Alban Hills Volcanic District. (literal)
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