Peri-Gondwanan origin and early geodynamic history of NE Sicily: A zircon tale from the basement of the Peloritani Mountains

Detrital zircons from the Ordovician rocks of the Pyrenees: Geochronological constraints and provenance

“…Likewise, Avigad et al (2012) propose a similar paleoposition for Sardinia, on the basis of the detrital signal of quartz-arenites from the lower and middle Cambrian of SW Sardinia that bear a noticeable Grenvillian (1.0-1.1 Ga) zircon population. Similar conclusions have been reached by Williams et al (2012) that proposes an East African origin for Sicily based on the presence of Grenvillian-aged detrital/ inherited zircons, and on the scarcity of zircon in the age range 2.2-1.9 Ga, in the basement of the Peloritani Mountains. Finally, the Basal allochthonous Units and the parautochthonous complexes of NW Iberia (Díez-Fernández et al, 2010, 2012 would be located in an intermediate position, between the West African Craton and the Sahara Metacraton, due to the minor relative proportions of Mesoproterozoic zircons compared to those of the NW Iberian autochthon.…”

“…The Sicilian sample FIU-07 (upper Ediacaran-lower Cambrian paragneiss, Williams et al, 2012) has a younger early Cambrian population. This population is similar to the early Cambrian population described in Andorra despite the fact that the maximum peak in FIU-07 occurred at over 540 Ma and in the Andorran population at around 650 Ma (Fig.…”

Source-inherited compositional diversity in granite batholiths: The geochemical message of Late Paleozoic intrusive magmatism in central Calabria (southern Italy)

“…Comparison with the Sr-Nd isotopic compositions of the metamorphic basement rocks from the CPO shows a strong similarity with the least radiogenic high-grade metasediments, such as some of the lower crustal metapelites and metagraywackes exposed in the northern Serre Massif Del Moro et al, 2000) and part of the paragneisses of the Aspromonte Unit Williams et al, 2012). Besides, it is to be pointed out that the isotopic compositions of meso-melanosomes and related leucosomes from the metapelitic complex determined by Del Moro et al (2000) cover the whole range of compositions found in the granitoids, including even a metagraywacke meso-melanosome with a positive εNd value (Fig.…”

“…Although the metamorphism most widely documented is Late Variscan (~300 Ma; e.g. Appel et al, 2011;Atzori et al, 1994;Cirrincione et al, 2005;Fiannacca et al, 2012;Graessner et al, 2000;Schenk, 1980), some authors have pointed up a pre-Variscan origin for some of the basement rocks, especially those cropping out in the southernmost part of the CPO (e.g., Acquafredda et al, 1994;De Gregorio et al, 2003;Micheletti et al, 2007;Williams et al, 2012).…”

The relations between Gondwana and the adjacent peripheral Cadomian domain—constrains on the origin, history, and paleogeography of the peripheral domain

“…545 Ma together with older grains that include a distinct, though secondary cluster of ca. 1.0 Ga grains (Micheletti et al, 2008;Williams et al, 2012). Metamorphism and the widespread granitic intrusion record the Cadomian orogeny at ca.…”