Chemical and isotopic composition (Os, Pb, Nd, and Sr) of Neogene to Quaternary calc-alkalic, shoshonitic, and ultrapotassic mafic rocks from the Italian peninsula: Inferences on the nature of their mantle sources

Origin and evolution of Cenozoic magmatism of Sardinia (Italy). A combined isotopic (Sr–Nd–Pb–O–Hf–Os) and petrological view

“…Arculus (2003). The red dashed line separates the tholeiitic from the calcalkaline fields (Miyashiro, 1974 Blusztajn and Hegner, 2002;Jung et al, 2005;Pfander et al, 2012) and Italy (Roman and Tuscan Provinces; Gasperini et al, 2002;Conticelli et al, 2007) are reported for comparison. The Italian subduction-related rocks plot towards very radiogenic Sr and unradiogenic Nd isotopic compositions, indicated by the arrow in Fig.…”

The Vesuvius and the other volcanoes of Central Italy

“…The debate has focussed on two main possible genetic mechanisms: a) within-plate origin partial melting of an up-rising mantle plume (e.g., Vollmer & Hawkesworth, 1981;Vollmer, 1989;Ayuso et al, 1998;Castorina et al, 2000;Gasperini et al, 2002;Bell et al, 2004Bell et al, , 2013; b) orogenic to post-orogenic partial melting of the sub-continental lithospheric metasomatised mantle at a destructive plate margin, with contributions from recycled sediments (e.g., Peccerillo, 1985Peccerillo, , 1999Peccerillo, , 2001Peccerillo, , 2005aRogers et al, 1986;Beccaluva et al, 1991;Conticelli & Peccerillo, 1992;Downes et al, 2002;Conticelli et al, 2004Conticelli et al, , 2007Conticelli et al, , 2015aBianchini et al, 2008). Some of the authors suggesting a within-plate origin also point out the need for an increasing influence of an upper crustal geochemical component northward, although no convincing reasons have been provided to explain…”

“…Data are from Conticelli et al (1987Conticelli et al ( , 1991Conticelli et al ( , 1997Conticelli et al ( , 2002Conticelli et al ( , 2007Conticelli et al ( , 2009aConticelli et al ( , 2009bConticelli et al ( , 2010aConticelli et al ( , 2010bConticelli et al ( , 2011Conticelli et al ( , 2013Conticelli et al ( , 2015a Conticelli & Peccerillo (1992), Orsi et al (1995), Civetta et al (1997), Ayuso et al (1998), Conticelli (1998), D'Antonio et al (1999a, Castorina et al (2000), Mascle et al (2001), Pappalardo et al (1999Pappalardo et al ( , 2002a, Gasperini et al (2002), Perini et al (2000Perini et al ( , 2003Perini et al ( , 2004, Downes et al (2002), Bell et al (2004Bell et al ( , 2013, ), Cadeaux et al (2005), De Astis et al (2006, Peccerillo & Martinotti (2006), Di Rienzo et al (2007, 2008, Owen (2007), Avanzinelli et al (2008Avanzinelli et al ( , 2012aAvanzinelli et al ( , 2014, …”

“…The occurrence of such excesses only in Neapolitan rocks is ascribed to the recent addition of a U-rich component requiring the occurrence of a fluid component, which is also expected to act as The Vesuvius and the other volcanoes of Central Italy (Walker et al, 1989) and a possible crustal component represented by an Italian crustal rocks reported in Conticelli et al (2007) with 52 ppt Os and 187 Os/ 188 Os = 1.004. Data are from Gasperini et al (2002), Conticelli et al (2002Conticelli et al ( , 2007, Martelli et al (2004), Widom et al (2004), Prelević et al (2008Prelević et al ( , 2010Prelević et al ( , 2014, and Tommasini's unpublished data. Mantle Zoo end members are from Stracke et al (2005).…”

Geoquímica e geocronologia da Suíte Paciência: implicações para o fim da evolução riaciana do Bloco Itacambira-Monte Azu

“…Segundo diversos autores, essas rochas podem ocorrer em ambientes pós-colisionais de oró-genos acrescionários e/ou colisionais, em ambientes de arco de ilhas, bem como em ambientes anorogênicos intraplaca (Foley et al, 1987;Sylvester, 1989;Bonin, 1990;Bonin et al, 1998;Black e Liegeois, 1993;Nedelec et al, 1995;Miller et al, 1999;Yang et al, 2005;Conticelli et al, 2007Conticelli et al, , 2009.…”