Seismic Anisotropy in Sediments with Clay-Sand Mixture

P- 039 SEISMIC ANISOTROPY IN SEDIMENTS WITH CLAY-SAND MIXTURE Introduction Yan Jun 1� 2 Enru Liu 1 and Xiang-Yang Li 1 1 British Geological Survey Murchison House West Mains Road Edinburgh EH9 3LA UK 2 Department of Geology and Geophysics University of Edinburgh UK One of the most important factors a ecting seismic velocities in anisotropic formation is the presence of aligned pores clay particles and/or cracks. Extensive theoretical work and laboratory experiments have been devoted to this subject. One of the very successful models has been developed by Xu and White (1995) to model clay-sand mixture and this model