Please use this identifier to cite or link to this item:
Authors: Musumeci, G.* 
Mazzarini, F.* 
Tiepolo, M.* 
Di Vincenzo, G.* 
Title: UPb and 40Ar39Ar geochronology of Palaeozoic units in the northern Apennines: determining protolith age and alpine evolution using the Calamita Schist and Ortano Porphyroid
Issue Date: Jul-2011
Series/Report no.: 4/46(2011)
DOI: 10.1002/gj.1266
Keywords: northern Apennines
Palaeozoic basement
U-Pb zircon
40Ar-39Ar muscovite
Subject Classification04. Solid Earth::04.04. Geology::04.04.02. Geochronology 
04. Solid Earth::04.04. Geology::04.04.09. Structural geology 
04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics 
Abstract: In the northern Apennines, the Palaeozoic basement involved in the Late Oligocene–Middle Miocene nappe stack contains metamorphic units for which hypothetical ages have been assigned on the basis of lithological correlations with the Palaeozoic formations of the Variscan chain in Sardinia. This uncertainty concerning the age poses limitations to reconstructing the Palaeozoic stratigraphy, defining the Alpine and pre-Alpine histories and correlations with other domains of the Variscan chain. We present the UPb age of detrital zircon and the 40Ar39Ar age of metamorphic muscovite for the Calamita Schist and Ortano Porphyroid, two metamorphic units of undetermined Palaeozoic age cropping out in the eastern Elba Island. The radioisotopic data allows us to: (i) define the Early Carboniferous and Middle Ordovician ages for the Calamita Schist and Ortano Porphyroid, respectively, as well as their derivation (flysch deposit and magmatic rocks); (ii) pose some constraints concerning their alpine tectonic and metamorphic histories. These new data generate a more precise reconstruction of the Palaeozoic sequence in the northern Apennines, and they document that the Palaeozoic basement involved in the alpine deformation underwent internal stacking with an inversion of the original sequence. Copyright © 2010 John Wiley & Sons, Ltd.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
GJ_Musumeci_etal_2011.pdf4.25 MBAdobe PDFView/Open
Show full item record

Page view(s)

Last Week
Last month
checked on Aug 16, 2018


checked on Aug 16, 2018

Google ScholarTM