Interaction between ultrapotassic magmas and carbonate rocks: Evidence from geochemical and isotopic (Sr, Nd, O) compositions of granular lithic clasts from the Alban Hills Volcano, Central Italy

Peccerillo, Angelo; Federico, M.; Barbieri, Mário; Brilli, Mauro; Wu, Tian

doi:10.1016/j.gca.2010.02.021

Cited by 48 publications

(41 citation statements)

References 71 publications

(116 reference statements)

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“…Valle dei Preti, Piana dei Falliti, and Martignano), the role of subsidence appears more important than substrate excavation, also consistent with the significant magmatic signature of their juvenile eruption products. This, in turn, suggests shallow pre-eruptive magma reservoirs, consistent with the variable degrees of magma differentiation at SVD maars and previous inferences from data on the thermal interaction of maar feeder ultrapotassic magmas with carbonate and siliciclastic country rocks in the Roman Province Peccerillo et al 2010;Sottili et al 2010b). It appears that crater excavation becomes more and more significant with increasing entrainment of lithic fragments from the aquifers (e.g.…”

Section: Concluding Remarks: Eruption Energetics and Inferences On Masupporting

confidence: 87%

Origins and energetics of maar volcanoes: examples from the ultrapotassic Sabatini Volcanic District (Roman Province, Central Italy)

et al. 2011

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Maar volcanoes represent a common volcano type which is produced by the explosive interaction of magma with external water. Here, we provide information on a number of maars in the ultrapotassic Sabatini Volcanic District (SVD, Roman Province) as young as similar to 90 ka. The SVD maars are characterised in terms of crater and ejecta ring morphologies, eruptive successions and magma compositions, in light of the local substrate settings, with the aim of assessing magma-water interaction conditions, eruption energetics and genetic mechanisms. Feeder magmas spanned the whole SVD differentiation trend from trachybasalts-shoshonites to phonolites. From the ejected lithic fragments from aquifer rocks, the range of depth of magma-water explosive interaction is estimated to have been mostly at similar to 400-600 m below ground level, with a single occurrence of surficial interaction in palustrine-lacustrine environment. In particular, the interaction with external water may have triggered the explosive behaviour of poorly differentiated magmas, whereas it may have acted only as a late controlling factor of the degree of fragmentation and eruption style for the most differentiated magma batches during low-flux ascent in an incipiently fragmented state. Crater sizes, ejecta volumes and ballistic data allow a reconstruction of the energy budget of SVD maar-forming eruptions. Erupted tephra volumes from either monogenetic or polygenetic maars ranged 0.004-0.07 km(3) during individual maar-forming eruptions, with corresponding total magma thermal energies of 8 x 10(15)-4 x 10(17) J. Based on energy partitioning and volume balance of erupted magmas and lithic fractions vs. crater holes, we consider the different contributions of explosive excavation of the substrate vs. subsidence in forming the SVD maar craters. Following available models based on crater sizes, highly variable fractions (5-50%) of the magma thermal energies would have been required for crater excavation. It appears that subsidence may have played a major role in some SVD maars characterised by low lithic contents, whilst substrate excavation became increasingly significant with increasing degrees of aquifer fragmentation

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Section: Concluding Remarks: Eruption Energetics and Inferences On Masupporting

confidence: 87%

Origins and energetics of maar volcanoes: examples from the ultrapotassic Sabatini Volcanic District (Roman Province, Central Italy)

et al. 2011

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“…Edgar et al 1976Edgar et al , 1980Thibault et al 1992). It has to be noted, however, that high undersaturation for some rocks may also depend on shallow-level carbonate assimilation, a process well documented in some ultrapotassic volcanoes (Iacono Marziano et al 2008;Peccerillo et al 2010).…”

Section: Orogenic Magmatismmentioning

confidence: 99%

“…Peccerillo 1999; Conticelli et al 2002Conticelli et al , 2010Peccerillo et al 2010;Lustrino et al 2011; but see Bell et al 2013). However, many problems remain, especially for orogenic magmatism.…”

Section: Element Transfer and Crust-mantle Interaction In Subduction mentioning

confidence: 99%

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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“…Sedimentary carbonate assimilation has been widely discussed by several authors who found in some specific cases evidence to support it, but in other cases questioned this differentiation process (e.g. Boari et al, 2009a;Peccerillo et al, 2010;Conticelli et al, 2010b). …”

Section: Chemical and Petrographic Characteristics Of Colli Albani Rocksmentioning

confidence: 99%

The Vesuvius and the other volcanoes of Central Italy

Avanzinelli¹,

Cioni²,

Conticelli³

et al. 2017

GFT

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Interaction between ultrapotassic magmas and carbonate rocks: Evidence from geochemical and isotopic (Sr, Nd, O) compositions of granular lithic clasts from the Alban Hills Volcano, Central Italy

Cited by 48 publications

References 71 publications

Origins and energetics of maar volcanoes: examples from the ultrapotassic Sabatini Volcanic District (Roman Province, Central Italy)

Origins and energetics of maar volcanoes: examples from the ultrapotassic Sabatini Volcanic District (Roman Province, Central Italy)

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

The Vesuvius and the other volcanoes of Central Italy

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