He, Ar, O, Sr and Nd isotope constraints on the origin and evolution of Mount Etna magmatism

Marty, Bernard; Trull, Thomas W.; Lussiez, Patricia; Basile, Isabelle; Tanguy, Jean-Claude

doi:10.1016/0012-821x(94)90240-2

Cited by 129 publications

(90 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…He ratio and He concentration of our samples with other products of Mt. Etna (Marty et al, 1994;Nuccio et al, 2008). Our data set is consistent with these studies and confirms that olivines are richer in He and display higher Rc/Ra ratios than pyroxenes.…”

Section: Sr-nd Isotopessupporting

confidence: 80%

“…Etna (Armienti et al, 2004;Tonarini et al, 2001;Viccaro and Cristofolini, 2008 Fig. 7 also shows the isotopic data of Hyblean mantle peridotite and pyroxenite xenoliths (Bianchini et al, 2010;Correale et al, 2012;Tonarini et al, 1996) (Marty et al, 1994;Nuccio et al, 2008 He ratio in atmosphere of 1.39 × 10…”

Section: Sr-nd Isotopesmentioning

confidence: 99%

“…Many authors (e.g., Armienti et al, 2004;Carter and Civetta, 1977;Tanguy et al, 1997;Tonarini et al, 2001;Viccaro and Cristofolini, 2008;Viccaro et al, 2011, and references therein) have identified the mantle source as the main cause of the compositional and isotope variations in some Etnean lavas. A few authors (e.g., Tanguy, 1980;Tanguy et al, 1997) He = 6.7 ± 0.4 Ra) measured by Marty et al (1994) and Nuccio et al (2008) in a wide range of Etnean volcanic rocks. In contrast, other authors (e.g., Armienti et al, 2004;Tonarini et al, 2001;Viccaro and Cristofolini, 2008;Viccaro et al, 2011) have favored a heterogeneous and metasomatized source that is closely related to the complex geodynamic context.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A two-component mantle source feeding Mt. Etna magmatism: Insights from the geochemistry of primitive magmas

Correale

Paonita

Martelli

et al. 2014

Lithos

View full text Add to dashboard Cite

Section: Sr-nd Isotopessupporting

confidence: 80%

Section: Sr-nd Isotopesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A two-component mantle source feeding Mt. Etna magmatism: Insights from the geochemistry of primitive magmas

Correale

Paonita

Martelli

et al. 2014

Lithos

View full text Add to dashboard Cite

“…Hf and He isotope ratios also show wide ranges of compositions, from typical mantle to upper crustal values, although the number of data for these isotopes is much smaller (e.g. Marty et al 1994;Gasperini et al 2002;Martelli et al 2008;Prelevic et al 2010).…”

Section: Isotope Geochemistrymentioning

confidence: 99%

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

Peccerillo

Frezzotti

2015

JGS

View full text Add to dashboard Cite

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.

show abstract

“…However, they have not been often used as tracers of mag matic processes and volcanic systems. Since it is expected that noble gas isotopes would be sensi tively affected by magmatic events, such as magma mixing and assimilation, they might have a po tential to contribute to volcanology (Hilton et al, 1993;Kaneoka, 1993;Marty et al, 1994). In this study, we have applied noble gas signatures to the magma of Unzen Volcano, Japan (Fig.…”

Section: Introductionmentioning

confidence: 99%

Magmatic processes revealed by noble gas signatures: the case of Unzen Volcano, Japan.

Hanyu

Kaneoka

1997

Geochem. J.

View full text Add to dashboard Cite

The usefulness of noble gas isotope systematics for understanding the volcanic systems is demonstrated in the case of Unzen Volcano, Japan. Noble gas concentrations and Ar isotope ratios were determined for coexisting plagioclase, hornblende and biotite in two dacitic volcanic rocks. Different species of minerals coexisting in a magma show different 40Ar/36Ar, and the 40Ar/36Ar is correlated to the grain sizes of the phenocrysts, indicating that they had crystallized in an evolving system of the magma. The variation of 40Ar/36Ar observed among samples can be explained by a two -component mixing: magmatic Ar and atmosphere-derived Ar. In order to explain the variation of 40Ar/36Ar, we propose a magmatic model in which the 40Ar/36Ar of magma had gradually decreased due to addition of atmosphere-derived Ar and, in the same sequence of time, phenocrysts had crystallized one after another as cooling of the magma had proceeded. Groundwater is the most probable candidate as carrier of atmosphere-derived Ar although crustal contamination is not completely excluded.

show abstract

He, Ar, O, Sr and Nd isotope constraints on the origin and evolution of Mount Etna magmatism

Cited by 129 publications

References 45 publications

A two-component mantle source feeding Mt. Etna magmatism: Insights from the geochemistry of primitive magmas

A two-component mantle source feeding Mt. Etna magmatism: Insights from the geochemistry of primitive magmas

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

Magmatic processes revealed by noble gas signatures: the case of Unzen Volcano, Japan.

Contact Info

Product

Resources

About