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Sediments in and by Gorgan Bay, Caspian Sea

36.8N 54.4E

April 21st, 2011 Category: Lakes, Sediments

Caspian Sea - April 15th, 2011

Gorgan Bay is a large, shallow inlet (23,800 ha) at the extreme south-east corner of the Caspian Sea, north and east of the town of Behshahr, almost totally cut off from the open sea by the Miankaleh Peninsula (24,200 ha), which is 60 km long and averages c.2 km wide. It is low and sandy with a chain of dunes 50 m wide paralleling the Caspian Sea coast.

Gorgan Bay is brackish and receives freshwater inflow from a number of small rivers and streams rising on the humid north slope of the Alborz Mountains to the south. Some freshwater marshes occur at the west end of the bay, where inflow is greatest.

Here, the waters of the bay appear greenish tan, while tan sediments line the shores of the sea to the north. Erosion, sediment transport and severe sedimentation by riverine, marine and eolian processes are the important sedimentary aspects of this great bay.

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