-
Article
Strontium isotopic composition of some recent basic volcanites of the Southern Tyrrhenian Sea and Sicily Channel
The 87Sr/86Sr ratios have been determined on the volcanic rocks of Ustica, Linosa and Pantelleria Islands. The petrology of these islands is typical of volcanic products belonging to the alkalic suite. The volcan...
-
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...
-
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...
-
Article
Distribution of nickel, copper and zinc in the volcanic series of Erta'Ale, Ethiopia
NI, Cu and Zn were measured polarographically in 34 samples of volcanic rocks from the chain of Erta'Ale, Ethiopia. In this chain all rock types from picritic basalts to alkaline and peralkaline rhyolites can ...
-
Article
Nature of the clinopyroxene and iron enrichment in alkalic and transitional basaltic magmas
Iron enrichment and clinopyroxene composition are considered to be good indicators of the magmatic parentage of volcanic series produced by fractionation of basaltic magma. Tholeiitic series are in fact believ...
-
Article
Tectonic Significance of the Afar (or Danakil) Depression
The Afar depression results from the separation of the Arabian and Nubian plates, with generation of new oceanic crust. Volcano-tectonic spreading axes form part of broad uplifted structures. The Gulf of Aden ...
-
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.
-
Article
Recommendations for further studies on the peralkaline oversaturated volcanic rocks
-
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...
-
Article
Editorial
-
Article
Volcanological research in afar (L. R. Wager prize summary lecture)
-
Article
Editorial
-
Article
Editorial
-
Chapter and Conference Paper
The Afar Rift Junction
The Afar depression (Ethiopia and Gibuti area) is the site of the junction of three major rift zones: two oceanic (Red Sea and Gulf of Aden) and a continental one (East African rift). Approaching Afar some mod...
-
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...
-
Article
Upper miocene submarine basalts from the western margin of the Red Sea (Secca Fawn-l hole, massawa channel)
Die Secca-Fawn-l-Bohrung, die 1968 von der Gulf Oil Company am westlichen Rand des südlichen Roten Meeres abgeteuft wurde, erreichte in 1400 m Tiefe eine Folge von jungmiozänen bis altpliozänen submarinen Basa...
-
Chapter and Conference Paper
The Evaluation of a Preliminary Geothermal Model for the Phlegraean Fields Volcanic Area (Italy)
The results of volcanological and petrochemical studies, MT surveys, passive seismic studies and a new gravity and magnetic interpretation relatively to the Phlegraean Fields area, Italy, are presented.
-
Chapter and Conference Paper
Integrated Geothermal Reconnaissance of the Somma-Vesuvius System
The main results of the first phase of the geothermal exploration of Somma-Vesuvius active volcanic area (including geologic, volcanological, hydrogeological, hydrogeochemical, gravimetric, aeromagnetic, geoel...
-
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...
-
Article
A model for Plinian eruptions of Vesuvius
The term ‘Plinian’ has been widely used1–4 to describe continuous gas-blast eruptions of large magnitude a typical example5, of which is the AD 79 eruption of Vesuvius which destroyed Pompei and the surrounding r...
