%0 Journal Article
%A Casquet, César
%A Pankhurst, R.J.
%A Fanning, C.M.
%A Baldo, Edgardo G.
%A Galindo Francisco, Mª del Carmen
%A Rapela, Carlos W.
%A González Casado, José Manuel
%A Dahlquist, Juan A.
%T U–Pb SHRIMP zircon dating of Grenvillian metamorphism in Western Sierras Pampeanas (Argentina): Correlation with the Arequipa-Antofalla craton and constraints on the extent of the Precordillera Terrane
%D 2006
%@ 1342-937X
%U https://hdl.handle.net/20.500.14352/49545
%X Metamorphism of Grenvillian age (ca. 1.2 Ga; U–Pb zircon dating) is recognized for the first time in the Western Sierras Pampeanas (Sierra de Maz). Conditions reached granulite facies (ca. 780 °C and ca. 780 MPa). Comparing geochronological and petrological characteristics with other outcrops of Mesoproterozoic basement, particularly in the northern and central Arequipa-Antofalla craton, we suggest that these regions were part of a single continental crustal block from Mesoproterozoic times, and thus autochthonous or parautochthonous to Gondwana.
%~