Burdigalian coral bioconstructions of Sperone (southern Corsica)

This study reports the facies analysis of a Burdigalian mixed carbonate-siliciclastic coastal system characterized by coral bioconstructions. These deposits, assigned to the Cala di Labra Fm, represent the sedimentation occurred in the Bonifacio Basin during the Sardinia-Corsica block rotation. At Sperone, the Cala di Labra Fm is weel exposed along the sea-cliff allowing an accurate investigation and mapping of coral bioconstructions and lateral facies transition. Four principal facies have been recognized: a) siliciclastic, b) quartz-rich calcarenite, c) calcarenite and d) coral facies.