Gutenberg Open


Personen: Iacopini, D. (Autor) 
Carosi, R. (Autor) 
Montomoli, C. (Autor) 
Passchier, Cornelis Willem (Autor) 
Titel: Strain analysis and vorticity of flow in the Northern Sardinian Variscan Belt : recognition of a partitioned oblique deformation event
Quelle: Tectonophysics. Bd. 446. H. 1/4. S. 77 - 96
Erscheinungsjahr:    2008
ISBN / ISSN: 0040-1951
URL der Originalveröffentlichung doi:10.1016/j.tecto.2007.10.002
Zeitschriftenaufsatz Zeitschriftenaufsatz
Sprache: Englisch
Open Access:
Person der Universität:    Passchier, Cornelis Willem  In UnivIS suchen 
Einrichtung: Institut für Geowissenschaften
DDC-Sachgruppe:    Geowissenschaften
DFG-Fachgebiet: Geologie und Paläontologie
ID: 16331  Universitätsbibliothek Mainz
Informationen zu den Nutzungsrechten unserer Inhalte Informationen zu den Nutzungsrechten unserer Inhalte
Abstract: A field example of strain partitioning has been analysed along the Nurra-Asinara transect of the NW Sardinian Variscan chain (Italy). The section in the Nurra-Asinara area is in a continuous sequence of tectono-metamorphic complexes made of low- to high-grade metamorphic rocks affected by a polyphase tectonic history. The principal fabric of the area is controlled by a D2 progressive deformation phase in which the strain is partitioned into folds and shear zone domains. The D2 stretching lineation and shear sense show a clear change from south to north. The principal meso- and micro-structures, vorticity gauges and a quantitative kinematic analysis of local strain suggest that the D2 kinematic history could be envisaged as an oblique heterogeneous deformation similar to the transpressive systems described in ancient and modern settings elsewhere. Using a simple kinematic model we also propose that both a transpressive system followed by "thrusting" or a partitioned transpressive system could be responsible for the fabric distribution and strain accumulation described in the study transect.
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