TY - JOUR
T1 - Finite element modelling of the evolution of pressure solution cleavage
AU - Fueten, Frank
AU - Robin, Pierre Yves F.
AU - Schweinberger, Michael
N1 - Funding Information:
This research was supported by Canadian National Science and Engineering Research Grants to FF and PYFR. The authors are grateful to David Ball, Andreas Paulish, and Scott Goodchild for their work on successive versions of the finite element program, to Sigmar Stiasny for some initial experiments, to Mike Lozon for work on Figs. 2 and 3 , and to Russ Pell Pysklywec and Blair Hrabi for their useful comments on an early version of the manuscript. Michael L. Williams, Nick Beeler, and Alison Ord are thanked for providing thoughtful reviews. The authors also thank Paul Williams for providing the photograph for Fig. 4 and to Bruce Hobbs, Win Means and Paul Williams for granting us its use.
PY - 2002
Y1 - 2002
N2 - Deformation by 'pressure solution' (or 'water-assisted stress-induced diffusion transfer') is modelled by incorporating volume transfers - driven by variations in mean stress and competency contrast - into a finite element code for viscous deformation. The model assumes a two component, quartz-mica mixture with a composition-dependent rheology in which the viscosity of an element is solely dependent upon the volume fraction of the mobile quartz component. Both quartz-rich and mica-rich compositions are given a high competency, with a minimum viscosity at some intermediate fraction. The model is able to reproduce many structures observed in natural tectonites: propagation and coalescence of pressure solution seams, formation of microlithons and anastomosing cleavage, and, more generally, tectonic segregation,
AB - Deformation by 'pressure solution' (or 'water-assisted stress-induced diffusion transfer') is modelled by incorporating volume transfers - driven by variations in mean stress and competency contrast - into a finite element code for viscous deformation. The model assumes a two component, quartz-mica mixture with a composition-dependent rheology in which the viscosity of an element is solely dependent upon the volume fraction of the mobile quartz component. Both quartz-rich and mica-rich compositions are given a high competency, with a minimum viscosity at some intermediate fraction. The model is able to reproduce many structures observed in natural tectonites: propagation and coalescence of pressure solution seams, formation of microlithons and anastomosing cleavage, and, more generally, tectonic segregation,
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U2 - 10.1016/S0191-8141(01)00091-8
DO - 10.1016/S0191-8141(01)00091-8
M3 - Article
AN - SCOPUS:0036233641
SN - 0191-8141
VL - 24
SP - 1055
EP - 1064
JO - Journal of Structural Geology
JF - Journal of Structural Geology
IS - 6-7
ER -