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Leucite tephrite

Roman Province (Latium) (0.8 to 0.02 Ma) Vulsini (0.6-0.15), Vico (0.4-0.1), Sabatini (0.8-0.04), Colli Albani (0.6-0.02) - Large volcanic complexes formed of potassic (trachybasalt to trachyte) and ultrapotassic (leucite tephrite, to phonolite) pyroclastics and minor lavas. [Pg.3]

Campania and Pontine Islands (1 Mato Present) Somma-Vesuvio (0.03-1944 AD), Campi Flegrei (0.3-1538 AD), I-schia (0.15-1302 AD), Procida (0.05-0.01), Ventotene (0.8-0.1), younger Ponza (1). - Shoshonitic, potassic (trachybasalt to trachyte) and ultrapotassic (leucite tephrite to phonolite) rocks forming stratovolcanoes and multi-centre complexes. [Pg.3]

Vulsini 0.6 to 0.15 - Several multicentre volcanic complexes with calderas, developed around the volcano-tectonic depression of the Bolsena Lake. Dominant pyroclastic fall deposits and ig-nimbrites and minor lavas, showing KS (trachybasalt to trachyte) and HKS (leucitite and leucite tephrite to pho-nolite) compositions. Minor melilitite. [Pg.72]

Vico 0.42 to 0.1 - Stratovolcano with a central caldera, an intra caldera cone and a few small circum-caldera centres. Dominant pyroclastic fall deposits and ignimbrites and minor lavas, mostly showing HKS (leucite tephrite to phonolite) composition. Minor trachybasalt, latite, trachyte and rhyolite. [Pg.72]

Colli Albani (Alban Hills) 0.6 to 0.02 possible historical activity - Stratovolcano with central nested calderas and several post-caldera explosion craters and maars, consisting of HKS (leucitite, leucite tephrite and phonotephrite) pyroclastic fall, flow and hydromagmatic products, and minor lavas. [Pg.72]

Fig. 4.5. Photomicrograph of a leucite tephrite from Vulsini showing color zoning (from deep green salite to colourless diopside) for clinopyroxene phenocrysts. Plane polarised light. Fig. 4.5. Photomicrograph of a leucite tephrite from Vulsini showing color zoning (from deep green salite to colourless diopside) for clinopyroxene phenocrysts. Plane polarised light.
Rock type Leucite tephrite Trachy- basalt Trachy- phonolite Trachyte Melilitite Trachy- basalt Latite Phono- lite... [Pg.106]

Rock type Phonotephrite Rhyolite Phono- tephrite Tephri- phonolite Phonolite Leucite- tephrite Phono- tefrite Leucitite... [Pg.107]

Rock type Low-K basalt K-trachy- basalt Leucite-tephrite Leucitite... [Pg.127]

Volcano Somma-Vesuvio Age 30 ka to 1944 AD Volcanology and Petrology - Stratovolcano (Mount Somma) with multiple caldera and an intracaldera cone (Vesu-vio) formed of slightly to strongly silica undersaturated trachybasalt and leucite-tephrite to trachyte and phonolite. [Pg.132]

Vai GB, Martini PI (eds) (2001) Anatomy of an Orogen. The Apennines and adjacent Mediterranean basins. Kluwer, Dordrecht, 632 pp Varekamp JC, Kalamarides R (1989) Hybridization processes in leucite tephrites from Vulsini, Italy, and the evolution of the Italian potassic suite. J Geophys Res 94 4603-4618... [Pg.358]

Monti Ernici about 0.7 to 0.1 - HKS 0.7 to 0.2 -KS 0.2 to 0.1 - About twenty monogenetic cones formed of strombolian scoriae, hydrovolcanic surge and flow deposits and some lava flows displaying a mafic composition and a subalkaline (LKB) to alkaline potassic (KS) and ultrapotassic (HKS) petrochemical affinity (basalt, K-trachybasalt, tephrite, phonotephrite, leucit-ite). [Pg.111]

See other pages where Leucite tephrite is mentioned: [Pg.13]    [Pg.73]    [Pg.74]    [Pg.88]    [Pg.96]    [Pg.112]    [Pg.113]    [Pg.126]    [Pg.152]    [Pg.295]    [Pg.319]    [Pg.13]    [Pg.73]    [Pg.74]    [Pg.88]    [Pg.96]    [Pg.112]    [Pg.113]    [Pg.126]    [Pg.152]    [Pg.295]    [Pg.319]    [Pg.121]    [Pg.136]    [Pg.158]   
See also in sourсe #XX -- [ Pg.73 , Pg.74 , Pg.112 , Pg.120 , Pg.136 ]



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