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D029 Observations of Azimuthal Anisotropy in Seismic Gathers D. Gray* (CGG Veritas) SUMMARY A method for displaying prestack seismic data that highlights azimuthal anisotropy is shown. Using this method to make observations of azimuthal anisotropy in prestack seismic data makes it clear that azimuthal anisotropy is observed in all types of seismic data and that it is widespread from the shallowest to the deepest seismic reflectors. Therefore we must account for anisotropy when we are processing and interpreting these data. EAGE 69 th Conference & Exhibition — London UK 11 - 14 June 2007 Introduction Visualizing anisotropy in prestack seismic