A Thin Section Petrographic Study Examining Biogenic Porosity Alteration Within the Avalon and Ben Nevis Formations, Whiterose Field, Offshore Newfoundland, Canada

The impact of biogenic porosity alteration is being increasingly noted. Within the Whiterose reservoir it is one contributory factor towards the generation of marked local porosity heterogeneities. In addition, the original physical and biogenic signatures have been overprinted by frequently abrupt calcite cementation fronts of variable intensity and extent, as well as concretions. These features locally mask the original sedimentologically and ichnologically derived depositional porosity variation.