SE51 Anisotropy at all scales in geomaterials: from lab-measurements to field observations and numerical modelling Convener: Burlini, L. Co-Convener(s): Rabbel, W. Wednesday, 21 April 1999 Lecture Room: Van Ruysdaelzaal 3 Chairpersons: Casey, M.; Mainprice, D. 08:50 BURLINI, L.; RABBEL, W. Introduction 09:00 RABBEL, W.; BOHLEN, T. Seismic anisotropy of the deep crust: problems and potential of field measurements and their inversion 09:15 BURLINI, L. Scale effect on seismic anisotropy 09:30 BEN, I.W.; MAINPRICE, D.; BARRUOL, G.; VAUCHEZ, A. Upper mantle anisotropy of the Kaapvaal craton (South Africa) from Petrofabric analysis 09:45 TOMMASI, A.; MAINPRICE, D.; VAUCHEZ, A. Upper mantle deformation, olivine lattice preferred orientations and strain localization 10:00 WENDT, A.; BAYUK, I.O.; CHESNOKOV, E.M.; MEREDITH, P.G. Anisotropy of an ultramafic rock: experimental measurements and theoretical modelling 10:15 MAULER, A.; BURLINI, L.; KUNZE, K.; BURG, J.P. Seismic anisotropy of mylonitic eclogites 10:30 BREAK Chairpersons: Burlini, L.; Rabbel, W. 11:00 BURLINI, L.; KUNZE, K. Fabric and seismic properties of calcite mylonite 11:15 CASEY, M. Rheological anisotropy and microstructure: indications from field observations and numerical modelling 11:30 ALEXEEV, A.D.; REVVA, V.N.; BRYUKHANOV, A.M.; POSHTUN, A.Z. Gas permeability of rock at three-dimensional nonequicomponent compression 11:45 VASARHELYI, B.; LEDNICZKY, K. Influence of hydrostatic pressure on crack propagation in anisotropic gneiss 12:00 KOSTYRYA, V.YA.; BOBROV, A.I.; AGAFONOV, A.V. Local destressing of outburst coal seams by rock development headings 12:15 ASSUMPCAO, M.; VAUCHEZ, A.; EGYDIO-SILVA, M.; TOMMASI, A.; BARRUOL, G. Coherent crust and upper mantle deformation around a cratonic core: evidence from surface geology, numerical modelling and shear wave splitting (Poster) 12:20 PRODAYVODA, G.T.; CHOLACH, P.Y. Transversal-isotropic approximation of elastic constants for anisotropic medium (Poster) 12:25 END OF SESSION