ANISOTROPIC CONNECTIVITY OF THE POROUS NETWORK IN A DUCTILE SHEAR ZONE

Authors
GERAUD Y MAZEROLLE F CARDON H VIDAL G CARON JM
Citation
Y. Geraud et al., ANISOTROPIC CONNECTIVITY OF THE POROUS NETWORK IN A DUCTILE SHEAR ZONE, Bulletin de la Societe geologique de France, 169(5), 1998, pp. 645-654
Citations number
50
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Bulletin de la Societe geologique de France → ACNP
ISSN journal
00379409
Volume
169
Issue
5
Year of publication
1998
Pages
645 - 654
Database
ISI
SICI code
0037-9409(1998)169:5<645:ACOTPN>2.0.ZU;2-J
Abstract
Porosity and connectivity of the porous network of a sheared granite i n green schist facies, are showed by a capillary test under CT X-ray. A strong correlation is pointed out between mineral phases, strain (di ssolution - crystallization, shearing), porosity and connectivity of t he network. Porosity evolves between 5% in K-feldspars and 0.1% in qua rtz and muscovite layer. Transfer properties are higher of one order o f magnitude in the shear-plane than in the perpendicular direction.