A bubble in the sedimentary rock
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A bubble in the sedimentary rock

by Konstantinos Kourtidis, Demokritus University of Thrace, Xanthi, Greece

Sedimentary rocks of Faraklo, Lemnos island, Greece. Formed at late Eocene, early Oligocene. Deposition might have occured in submarine fans. The round feature has a diameter of around 40 cm.