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Article
Compositional variation in the 1983 and other recent Etnean lavas: Insights on the shallow feeding system
A systematic petrographic and chemical study of chronologically ordered lava samples collected during the 1983 Etna eruption, has shown minor fluctuating variations in crystallinity and chemistry, apparently c...
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Article
Foreword
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Foreword
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Article
A model of the Phlegraean Fields magma chamber in the last 10,500 years
Volcanological and petrological data suggest that the Phlegraean Fields volcanic activity has been fed, at least in the last 10,500 years, by a not-refilled magma chamber where trachytic residual liquids were ...
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Article
Phlegraean Fields 1982–1984: Brief chronicle of a volcano emergency in a densely populated area
The essential features of the ongoing potential pre-eruptive crisis at the Phlegraean Fields begun in August 1982 are summarized and the main problems faced by scientists responsible of volcanic hazards evalua...
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Article
The evolution of latera caldera (central Italy) in the light of subsurface data
Subsurface geothermal exploration has considerably added to our knowledge of the Latera volcanic complex. A syenitic body is located about 2 km below the present-day surface; K-Ar data point a 0.9 Ma age. The ...
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Article
Compositional variations in the Campanian Ignimbrite, Italy: Hydrothermal modification or pre-eruptive fractionation? — A reply
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Preface
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Article
The somma-vesuvius magma chamber: a petrological and volcanological approach
The volcanic history of Somma-Vesuvius indicates that salic products compatible with an origin by fractionation within a shallow magma chamber have been repeatedly erupted («Plinian» pumice deposits). The last...
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Article
Metamorphic carbonate ejecta from vesuvius plinian eruptions: Evidence of the occurrence of shallow magma chambers
Petrological, mineralogical and chemical data of 46 ejecta deriving from the sedimentary basement beneath Somma-Vesuvius volcano are reported. The ejecta samples were collected in pumice deposits formed during...
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Article
The campanian ignimbrite: a major prehistoric eruption in the Neapolitan area (Italy)
A geological, chemical and petrographical study of the Campanian ignimbrite, a pyroclastic flow deposit erupted about 30,000 years ago on the Neapolitan area (Italy), is reported. The ignimbrite covered an are...
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Editorial
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Editorial
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Editorial
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Volcanological research in afar (L. R. Wager prize summary lecture)
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Article
Some data on the comendite type area of S. Pietro and S. Antioco islands, Sardinia
A summary of the available data on the peralkaline rocks of S. Pietro and S. Antioco islands, together with, new chemical analyses and some preliminary K-Ar ages are reported.
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Article
Recommendations for further studies on the peralkaline oversaturated volcanic rocks
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Article
Silicic peralkaline volcanic rocks of the afar depression (Ethiopia)
Three main types of recent volcanism may be distinguished in the Afar Depression: 1) oceanic volcanism of the axial ranges; 2) volcanism along the margins where an attenuated sialic crust probably occurs; 3) m...
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Article
The Erta Ale volcanic range (Danakil depression, northern afar, ethiopia)
The Erta Ale range is the main volcanic unit in the Danakil rift. It is located along the axis of the northern part of the Depression, in a zone clearly related to the Red Sea rift. The detailed study of the t...
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Article
Géologie de l’Afar Septentrional
Tectonique — Du 15° au 13° parallele, l’apex septentrional de l’Afar est conditionné par des fissures de tension ouvertes et des failles normales de direction NNW. Un graben à fosse centr...