The Variscan section exposed across north Sardinia consists of migmatitic complexes intruded by the huge Corsica-Sardinia Batholith (CSB). This latter represents one of the largest magmatic provinces assembled in Late Variscan times, between about 340 and 280 Ma. The composition of most plutons ranges from monzogranitic to granodioritic, with subordinate gabbro-dioritic terms and leucocratic, muscovite ± cordierite ± garnet-bearing, peraluminous granites. The compositional homogeneity of plutons often makes geological mapping a difficult task, unless large geochemical, geochronological and isotopic datasets are available. In this work we present a new structural map of northern Sardinia. The results are based on detailed field-structural survey, U-Pb zircon dating and extensive, in situ, geochemical characterization with a portable gamma ray spectrometer.
Structural map of Variscan north Sardinia / Casini, Leonardo; Cuccuru, S.; Oggiano, Giacomo; Puccini, A.. - In: RENDICONTI ONLINE DELLA SOCIETÀ GEOLOGICA ITALIANA. - ISSN 2035-8008. - 29:(2013), pp. 24-26.
Structural map of Variscan north Sardinia
CASINI, Leonardo;Cuccuru, S.;OGGIANO, Giacomo;
2013-01-01
Abstract
The Variscan section exposed across north Sardinia consists of migmatitic complexes intruded by the huge Corsica-Sardinia Batholith (CSB). This latter represents one of the largest magmatic provinces assembled in Late Variscan times, between about 340 and 280 Ma. The composition of most plutons ranges from monzogranitic to granodioritic, with subordinate gabbro-dioritic terms and leucocratic, muscovite ± cordierite ± garnet-bearing, peraluminous granites. The compositional homogeneity of plutons often makes geological mapping a difficult task, unless large geochemical, geochronological and isotopic datasets are available. In this work we present a new structural map of northern Sardinia. The results are based on detailed field-structural survey, U-Pb zircon dating and extensive, in situ, geochemical characterization with a portable gamma ray spectrometer.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
