Stratigraphic Framework of the Gavdos Island Neogene Sediments
Anastasakis, G. C.; Dermitzakis, M. D.; Triantaphyllou, M. V.
published: Feb 16, 1995
ArtNo. ESP026003201002, Price: 29.00 €
Gavdos represents the southernmost island of the South Aegean Island Arc. Two thirds of the island are covered by a thick sequence of Upper Cenozoic sediments. Neogene sedimentation of the island started with the accumulation of Potamos Formation which starts with the deposition of coarse marine to nonmarine clastics, succeeded by coral limestones and followed by thick shales with turbiditic intercalations. Both sedimentological and paleontological evidence suggest that these shales were deposited in a deep basin where the often reworked sediments were generally derived locally. Calcareous nannoplankton and planktonic foraminifera obtained from the least reworked upper basal part of the Potamos Formation suggest a middle Serravallian age, while faunal assemblages in the uppermost part of the formation suggest a late Serravallian to early Tortonian age. The other Neogene sediments of the Gavdos island belong to the Metochia Formation. The main part of the sequence contains ample sedimentological evidence suggestive of deposition in a deep sea fan-basinal setting. The contained fauna indicates an early-middle Tortonian age. The Metochia Formation sediments provide evidence that an additional phase of basin subsidence occurred in the early Tortonian.