Origin of peraluminous granites and granodiorites, Iberian massif, Spain: an experimental test of granite petrogenesis

Castro, Antonio; Douce, Alberto E. Patiño; Corretgé, L. G.; Rosa, J. de la; El-Biad, M.; El-Hmidi, Hassan

doi:10.1007/s004100050511

Cited by 201 publications

(155 citation statements)

References 43 publications

Supporting

Mentioning

142

Contrasting

Unclassified

Order By: Relevance

“…but it seems unlikely that they could generate large batholiths of peraluminous felsic granites. Melting-assimilation experiments carried out by Castro et al (1999) at 1000°C and 4, 7 and 10 kbar and using a proportion of 50% gabbro and 50% gneiss give high silica-rich melt proportions (more than 50 vol.%) whose compositions closely overlap those of the studied peraluminous monzogranites. Although, fractionation together with assimilation have frequently been observed in calc-alkaline magmatic complexes they cannot be invoked to explain the chemical and isotopic evolution of the granites from de Vieira do Minho pluton.…”

Section: Nature Of the Granite Sourcesmentioning

confidence: 99%

“…The lack of appropriate sources in terms of isotopic composition has led to consider several models for the origin of the peraluminous granites: (i) mixing or assimilation between crustal melts and mantle-derived magmas (Castro et al, 1999;Dias and Leterrier, 1994;Dias et al, 2002Dias et al, , 2009Moreno-Ventas et al, 1995) (ii) partial melting of essentially crustal sources either from mid-crustal levels (Bea et al, 2003;Neiva, 1998) or from infracrustal materials, namely metaigneous rocks (Dias et al, 2002(Dias et al, , 2009Martins et al, 2009;Villaseca and Herreros, 2000;Villaseca et al, 1998Villaseca et al, , 1999.…”

Section: Nature Of the Granite Sourcesmentioning

confidence: 99%

“…Although controversial, the type and nature of the processes responsible for the genesis of different granitic magmas can involve partial melting of distinct source rock materials, hybridisation of magmas with contrasting compositions, fractional crystallization, crustal contamination and more complex models, such as assimilation-fractional crystallization process (Bea et al, 1999;Bonin, 2004;Castro et al, 1999;Collins et al, 2000;Dias and Leterrier, 1994;Dias et al, 2002;Janousek et al, 2004;Moreno-Ventas et al, 1995;Patiño-Douce, 1999;Renna et al, 2006;Silva and Neiva, 2004;Slaby and Martin, 2008;Villaseca et al, 1998Villaseca et al, , 2008Villaseca et al, , 2009). Thus, their study offers an important contribute to a better knowledge of the mechanisms of magma genesis and the deep continental crust evolution, giving together insights about the nature of source rocks that are melted.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Late-Variscan emplacement and genesis of the Vieira do Minho composite pluton, Central Iberian Zone: Constraints from U–Pb zircon geochronology, AMS data and Sr–Nd–O isotope geochemistry

Martins

Ovaia

Noronha

2013

Lithos

View full text Add to dashboard Cite

In the Central Iberian Zone synorogenic (syn-and late-D 3 , the last deformation phase) composite batholiths of biotite-rich granitods with peraluminous character are well represented. We report here U-Pb zircon and monazite ages, geochemical, Sr-Nd-O isotopic data and Anisotropy of Magnetic Susceptibility (AMS) studies for the late-D 3 Vieira do Minho pluton, in northern Portugal. AMS reveals the paramagnetic behaviour of these granites and the magnetic fabric enhances the major role of NW-SE regional anisotropies on controlling the ascent and emplacement of the magmas. Magnetic anisotropy and medium temperature microstructures also point out the evolution of regional tectonics during crystallization of the magma. U-Pb zircon and monazite analyses yield consistent ages of 310 ± 2 Ma and 312 ± 2 Ma, interpreted as emplacement age. The Vieira do Minho pluton consists of two peraluminous monzogranites, the VMG and the MRG. Both have similar ε Nd values (VMG= −5.2 to −5.7; MRG =−4.98 to −5.96) but the VMG is slightly enriched in 87 Sr/ 86 i = 0.7087-0.7098 as well as in δ 18 O in the range of 10.6‰ to 11.0‰ than the MRG with 87 Sr/ 86 i =0.7064-0.7075 and δ 18 O=9.9‰-10.5‰. These granites are associated with coeval scarce grabroic intrusions and/or mafic microgranular enclaves which are not considered as mafic precursors of the associated granitic magmatism. Instead, a lower metaigneous crustal source, at different levels, is proposed based on the available data set.

show abstract

Section: Nature Of the Granite Sourcesmentioning

confidence: 99%

Section: Nature Of the Granite Sourcesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Late-Variscan emplacement and genesis of the Vieira do Minho composite pluton, Central Iberian Zone: Constraints from U–Pb zircon geochronology, AMS data and Sr–Nd–O isotope geochemistry

Martins

Ovaia

Noronha

2013

Lithos

View full text Add to dashboard Cite

show abstract

“…Many different types of granite have been recognized based on their bulk compositions, the mineral assemblages they contain, and even the tectonic setting in which they occur Streckeisen, 1974). One of these types of granite, the peraluminous S-type, are believed to be derived frompelitic rocks by the incongruent melting of muscovite and biotite in a process called hydrate-breakdown melting (Stevens et al, 1997;Taylor and Stevens, 2010;Waters, 2001;Watt and Harley, 1993 Numerous experimental studies have examined the partial melting of pelitic and psammitic rocks under a range of pressure and temperature conditions representative of the granulite faciès at which large volume of granitic melt are thought to form (Castro et aL, 1999;Clemens and VielzeuÇ 1988;Montel and Vielzeuf, 1997;Stevens et aL, 1997;Vielzeuf and Montel, 1994). A common feature of all the experimental studies is the remarkable uniformity of the bulk composition of the quenched melt that has been produced.…”

Section: Introductionmentioning

confidence: 99%

Origines des enrichissements en biotite dans les granites de type S :

Lavaure¹

2012

View full text Add to dashboard Cite

RESUMEDe nombreux travaux expérimentaux ont été effectués, au cours des dernières décennies pour recréer des magmas anatectiques felsiques à partir de la fusion par déshydratation de différents types de roches tels que des métasédiments ou des roches ignées. Cependant, les granites naturels de type S sont beaucoup plus enrichis en fer et magnésium que tous les liquides felsiques qui ont pu être obtenus expérimentalement. De plus, des analyses de liquides felsiques en inclusion dans les minéraux métamorphiques ont montré les mêmes résultats que les travaux expérimentaux. Récemment, Pentrainement de phases péritectiques lors de l'extraction du liquide a été démontré comme étant l'un des processus responsables de ces enrichissements. Seulement, un certain nombre des granites de type S riches en fer et en magnésium ne contiennent pas de minéraux tels que le grenat ou la cordiérite mais seulement un fort enrichissement enbiotite.

show abstract

“…Application of experimental petrology to the origin of Iberian granitoids (e.g. Castro et al 1999Castro et al , 2000 includes specific investigation of the role of assimilation in cordierite granites (García Moreno et al 2007). Two distinct models are commonly applicable to account for the presence of cordierite in non-anatectic granite magmas (Clarke 1995): (i) those involving the magmatic precipitation of cordierite; and (ii) those favouring a restitic or xenocrystic origin for cordierite and/or the assimilation of cordierite-rich rocks.…”

mentioning

confidence: 99%

A reactive assimilation model for regional-scale cordierite-bearing granitoids: geochemical evidence from the Late Variscan granites of the Central Iberian Zone, Spain

Ugidos¹,

Stephens

Carnicero³

et al. 2008

Earth and Environmental Science Transactions of the Royal Socie

View full text Add to dashboard Cite

Regional scale biotite and cordierite-bearing granites (s.l.) in the Variscan of the Central Iberian Zone (CIZ) are spatially closely associated with cordierite-rich nebulites and cordierite-bearing two-mica granites, and with cordierite-rich high grade hornfelses and cordieritites (>60% cordierite) that are relatively common in the aureoles of these granites. Building on published field evidence, petrological data are presented which, combined with new chemical and isotopic (Sr-Nd) modelling, indicate that the cordierite-bearing granites cannot be derived by simple anatexis of regional sedimentary protoliths; but the data are consistent with a process of reactive assimilation that involves the interaction of biotite granite magma with high-grade host rocks ranging from cordierite nebulites to andalusite-bearing cordieritites. The contribution of the postulated cordieriterich contaminants to the diversity of cordierite granite compositions is modelled using the compositions of regional Lower Cambrian-Upper Neoproterozoic metasedimentary rocks that are generally chemically mature (CaO very rarely exceeds 1·4%). These rocks include specific horizons in which extreme chemical alteration is attributable to sediment reworking during eustatic falls in sea level. Such compositions may account for the presence of the high concentrations in Al that later produced cordieritites. Fractional crystallisation is also important, particularly in generating the more evolved cordierite granite and cordierite biotite muscovite granite compositions. Although assimilation in situ is normally regarded as a minor contributor volumetrically to evolving plutons, in this instance the emplacement of large volumes of granite magma into a high-T-low-P environment significantly increased the potential for reactive assimilation.

show abstract

Origin of peraluminous granites and granodiorites, Iberian massif, Spain: an experimental test of granite petrogenesis

Cited by 201 publications

References 43 publications

Late-Variscan emplacement and genesis of the Vieira do Minho composite pluton, Central Iberian Zone: Constraints from U–Pb zircon geochronology, AMS data and Sr–Nd–O isotope geochemistry

Late-Variscan emplacement and genesis of the Vieira do Minho composite pluton, Central Iberian Zone: Constraints from U–Pb zircon geochronology, AMS data and Sr–Nd–O isotope geochemistry

Origines des enrichissements en biotite dans les granites de type S :

A reactive assimilation model for regional-scale cordierite-bearing granitoids: geochemical evidence from the Late Variscan granites of the Central Iberian Zone, Spain

Contact Info

Product

Resources

About