Origin and evolution of the Pleistocene magmatism of Linosa Island (Sicily Channel, Italy)

Bella, Marcella Di; Russo, Selma; Petrelli, Maurizio; Peccerillo, Angelo

doi:10.1127/0935-1221/2008/0020-1832

Cited by 15 publications

(18 citation statements)

References 33 publications

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“…in the local asthenosphere) by Civetta et al (1998) and Neave et al (2012). In contrast, an interaction between asthenospheric and lithospheric melts has been suggested by Esperança & Crisci (1995) and Di Bella et al (2008).…”

Section: Anorogenic Magmatismmentioning

confidence: 91%

Magmatism, mantle evolution and geodynamics at the converging plate margins of Italy

Peccerillo

Frezzotti

2015

JGS

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Abstract:The Plio-Quaternary magmatism in the Tyrrhenian Sea area exhibits wide compositional variations, which cover almost entirely those observed for volcanic rocks worldwide. Some volcanoes (Etna, Iblei, Sardinia, etc.) range from tholeiitic to Na-alkaline, and display elemental and isotope signatures typical of FOZO and EM-1 ocean-island basalts (OIB). Other volcanoes (Aeolian Arc, Italian peninsula) range from calc-alkaline-shoshonitic to K-alkaline, exhibit typical 'subduction-related' trace element signatures (low Ta-Nb, high Rb-Cs-LREE), and show a large range of radiogenic isotope ratios, from mantle-like in the Aeolian Arc to crustal-like in central Italy. Geochemical data suggest that OIB-type magmatism originated in lithosphere-asthenosphere sources that were unaffected by recent subduction. In contrast, subduction-related magmas come from mantle sources that underwent Eocene to present mixing with various amounts and types of subducted crustal components. Fluxing of the mantle wedge by water-rich fluids from a mid-ocean ridge basalt-type slab occurred in the southern Tyrrhenian Sea, whereas interaction between peridotite and various types of sediments occurred in central Italy. These contrasting styles of mantle contaminations relate to the nature (oceanic or continental) of the foreland, slab geometry and pre-metasomatic mantle compositions, which vary greatly along the Apennine arc and are the reason for the formation of the wide variety of orogenic magmas in Italy.

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Section: Anorogenic Magmatismmentioning

confidence: 91%

Magmatism, mantle evolution and geodynamics at the converging plate margins of Italy

Peccerillo

Frezzotti

2015

JGS

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“…Geochemical studies have revealed that the mantle source for the SSRZ is almost isotopically homogenous: basalts throughout the rift zone have nearly identical 87 Sr/ 86 Sr ratios (Linosa: 0.7031 ± 0.0001; Pantelleria: 0.7032 ± 0.0001; Seamounts: 0.7035 ± 0.0005) and very similar 143 Nd/ 144 Nd ratios (Linosa: 0.51291-0.51297 [ Nd = 5.9 ± 0.5]; Pantelleria: 0.51287-0.51299 [ Nd = 6.3 ± 0.5]; Seamounts: 0.51299-0.51312 [ Nd = 7.7 ± 0.5]) (Esperança and Crisci, 1995;Civetta et al, 1998;Rotolo et al, 2006;Di Bella et al, 2008;Avanzinelli et al, 2014).…”

Section: Introductionmentioning

confidence: 92%

“…The Mediterranean Sea between the island of Sicily and the Tunisian coast is the setting for magmatism with an Oceanic Island Basalt (OIB)-like affinity that has produced two islands (Pantelleria and Linosa) and several seamounts that occur subparallel to the faulted margins of two of the three northwest-southeast trending grabens that comprise the Strait of Sicily Rift Zone (SSRZ; Figure 1). Transitional (hy+ol-normative) to alkali (ne-normative) basaltic lavas and tuffs occur throughout the SSRZ, with evolved lavas and tuffs (peralkaline trachyte and rhyolite [pantellerite]) cropping out only at Pantelleria, where they form a bimodal association typical of intraplate magmatic settings (Mahood and Hildreth, 1986;Civetta et al, 1998;Bindi et al, 2002;Rotolo et al, 2006;Di Bella et al, 2008;White et al, 2009;Neave et al, 2012;Avanzinelli et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Geochemical constraints on basalt petrogenesis in the Strait of Sicily Rift Zone (Italy): Insights into the importance of short lengthscale mantle heterogeneity

et al. 2020

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“…Anorogenic magmas in the study area have been mainly erupted from 5 to 0.1 Ma ago in Sardinia, with incipient activity recently detected at about 12 Ma (Lustrino et al, 2007b), contemporaneously with the opening of the Tyrrhenian Sea (Lustrino et al, 2004), at several places in the Tyrrhenian basin (e.g., Ustica and several seamounts; Fig. 3), along the Sicily Channel (Miocene to present: Pantelleria, Linosa, and several seamounts; Calanchi et al, 1989;Rotolo et al, 2007;Di Bella et al, 2008), at Hyblei, and Etna (0.5 M.y. to present).…”

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confidence: 91%

Carbonate metasomatism and CO2 lithosphere–asthenosphere degassing beneath the Western Mediterranean: An integrated model arising from petrological and geophysical data

2009

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We present an integrated petrological, geochemical, and geophysical model that offers an explanation for the present-day anomalously high non-volcanic deep (mantle derived) CO 2 emission in the Tyrrhenian region. We investigate how decarbonation or melting of carbonate-rich lithologies from a subducted lithosphere may affect the efficiency of carbon release in the lithosphere-asthenosphere system. We propose that melting of sediments and/or continental crust of the subducted Adriatic-Ionian (African) lithosphere at pressure greater than 4 GPa (130 km) may represent an efficient mean for carbon cycling into the upper mantle and into the exosphere in the Western Mediterranean area. Melting of carbonated lithologies, induced by the progressive rise of mantle temperatures behind the eastward retreating Adriatic-Ionian subducting plate, generates low fractions of carbonate-rich (hydrous-silicate) melts. Due to their low density and viscosity, such melts can migrate upward through the mantle, forming a carbonated partially molten CO 2 -rich mantle recorded by tomographic images in the depth range from 130 to 60 km. Upwelling in the mantle of carbonate-rich melts to depths less than 60 -70 km, induces massive outgassing of CO 2 . Buoyancy forces, probably favored by fluid overpressures, are able to allow migration of CO 2 from the mantle to the surface, through deep lithospheric faults, and its accumulation beneath the Moho and within the lower crust. The present model may also explain CO 2 enrichment of the Etna active volcano. Deep CO 2 cycling is tentatively quantified in terms of conservative carbon mantle flux in the investigated area. IntroductionThe role of Earth degassing in present-day global carbon budget and consequent climate effects has been focused chiefly on volcanic emissions (e.g. Gerlach, 1991a;Varekamp and Thomas, 1998, Kerrick, 2001). The non-volcanic 1 escape of CO 2 from the upper mantle, from crustal carbonate rocks, from hydrocarbon accumulations, and from geothermal fields is not considered in the budgets of natural release processes (cf. IPCC reports). However, the impact of these processes on atmospheric CO 2 budget is relevant if considered at the regional scale.Italy constitutes an extraordinary example of massive CO 2 subaerial fluxes in the Western Mediterranean region (e.g. Chiodini et al., 1999Chiodini et al., , 2004Rogie et al., 2000;Chiodini and Frondini 2001;Minissale, 2004). In Italy, CO 2 emissions occur both in those areas of young or active volcanism (e.g. the Tyrrhenian border of Central Italy; Fig. 1), and at zones in which there is no evidence of magmatic activity, such as Central and Southern Apennines (Fig. 1).Interactions between magmas and carbonate rocks at walls of magma chambers locally contribute CO 2 in some recent and active volcanic zones (e.g., Alban Hills, Mt. Ernici, Vesuvius;Federico and Peccerillo, 2002; Iacono Marziano et al., 2007a, b). However, the bulk of present-day soil degassing in Italy is a regional feature affecting both volcanic areas and z...

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Origin and evolution of the Pleistocene magmatism of Linosa Island (Sicily Channel, Italy)

Cited by 15 publications

References 33 publications

Magmatism, mantle evolution and geodynamics at the converging plate margins of Italy

Magmatism, mantle evolution and geodynamics at the converging plate margins of Italy

Geochemical constraints on basalt petrogenesis in the Strait of Sicily Rift Zone (Italy): Insights into the importance of short lengthscale mantle heterogeneity

Carbonate metasomatism and CO2 lithosphere–asthenosphere degassing beneath the Western Mediterranean: An integrated model arising from petrological and geophysical data

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