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Gigapans

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  1. Thin section of fine grained talus from a landslip in Glen Dochart, near Crianlarich, Perthshire, Scotland. The diameter of the core shown is 38mm. The thin section is has been photographed under crossed polars. Using the ureolytic bacterium Sporosarcina Pasteurii the loose material has been biocemented by calcite prec...

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  2. Thin section of a 5mm diameter core of quartz sand which has been cemented using the ureolytic bacterium Sporosarcina Pasteurii. Porosity is picked out by blue dyed epoxy. The loose material has been biocemented by calcite precipitation induced by the bacteria during ureolysis. Calcite crystals can be seen as small gra...

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