Piazolo, Sandra: The influence of matrix rheology and vorticity on fabric development of populations of rigid objects during plane strain deformation
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Personen: Piazolo, Sandra (Autor) 
Bons, P. D. (Autor) 
Passchier, Cornelis Willem (Autor) 
  
Titel: The influence of matrix rheology and vorticity on fabric development of populations of rigid objects during plane strain deformation
  
Quelle: Tectonophysics. Bd. 351. H. 4. S. 315 - 329
Erscheinungsjahr:    2002
ISBN / ISSN: 0040-1951
URL der Originalveröffentlichung doi:10.1016/S0040-1951(02)00220-2
  
Dokumentart:
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: 16372  Universitätsbibliothek Mainz
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Informationen zu den Nutzungsrechten unserer Inhalte Informationen zu den Nutzungsrechten unserer Inhalte
Abstract: The influence of vorticity and rheology of matrix material on the development of shape-preferred orientation (SPO) of populations of rigid objects was experimentally studied. Experiments in plane strain monoclinic flow were performed to model the fabric development of two populations of rectangular rigid objects with object aspect ratios (Rob) 2 and 3. The density of the rigid object populations was 14% of the total area. Objects were dispersed in a Newtonian and a non-Newtonian, power law matrix material with a power law exponent n of 1.2. The kinematic vorticity number (Wn) of the plane strain monoclinic flow was 1, 0.8 and 0.6 with finite simple shear strain of 4.6, 3.0 and 0.9, respectively. In experiments with Rob=3, the SPO is strongly influenced by Wn and the material properties of the matrix. Deformation of a power law matrix material and low Wn resulted in a stronger SPO than deformation of a linear viscous matrix and high Wn. Strain localization coupled with particle interaction plays a significant role in the development of a shape-preferred orientation. High strain simple shear zones separate trains of rigid objects that are surrounded by low strain zones with Wn lower than the bulk Wn. In fabrics involving populations of objects with Rob=2, rheology of the matrix materials does not systematically influence the intensity of the SPO.
   
  
Verfügbarkeit prüfen:    Rechercheportal Mainz: 0040-1951
  KatalogPortal Mainz (inklusive FB 06): 0040-1951
  Elektronische Zeitschriftenbibliothek (EZB): 0040-1951
 


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