Three-Dimensional
Reconstruction of the Pleistocene Deltas of the Gulf of
Corinth (Greece)
Ori,
Gian Gabriele1 (1) IRSPS, Pescara, Italy
The Southern margin of the Gulf of Corinth displays remarkable
outcrops of coarse-grained deltaic bodies. Most of them are Gilbert-type deltas
where the relations among topset facies
and foreset facies are
matched by the external exhumed morphology. These bodies have been investigated
by field observations and large reconstruction from satellite images and SRTM
elevation models. They occur at about 1000 to 1200 m of elevation and are
located 2 – 3 km from the present coastline. The outcrop conditions and the
preservation of the morphologies allow a detailed analysis of the internal and
external geometries of these bodies. These bodies are strongly controlled by
the tectonic activity that formed deep and steep basin margin on which the
deltas grown. Deltaic bodies are distinct and can be reconstructed in details
from the fluvial systems deeply cut in the mountain chain of the Peloponnesus
up to the deep-sea (about 700 m of paleodepth).
Individual bodies are distinct and protruding from the paleoshoreline.
They are separated by coarse-grained beach deposits without fluvial influence.
Internally these deposits are extremely complex indicating a matching of
tectonic and climatic influences. These bodies are good analogues for several
coarse-grained stratigraphic reservoirs.