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Posts tagged Île d’Oléron

Sediments in Gironde Estuary and Around Île d’Olerón, France

44.5N 2.9W

November 23rd, 2012 Category: Sediments

France – November 22nd, 2012

Sediments pour from the Garonne and Dordogne Rivers, through the Gironde Estuary, and into the Bay of Biscay. They also frame the shores of western France, near the estuary, and surround the Île d’Oléron, an island due west of Rochefort, on the southern side of the Pertuis d’Antioche strait. With an area of about 174 km2, it is the second largest French island after Corsica.

The Gironde Estuary and the Pertuis d’Antioche, France’s Western Coast

March 26th, 2009 Category: Rivers

Western coast of France - March 9th, 2009

Western coast of France - March 9th, 2009

Sediments flow from the Dordogne and Garonne Rivers, through the Gironde Estuary (bottom right quadrant), and into the Atlantic Ocean off the western coast of France.

The rivers appear completely tan where they merge, near the city of Bordeaux (bottom right corner). This tan color takes on a progressively greener tint as the estuary widens.

Further up the coast, the waters of the Pertuis d’Antioche, a strait between the two islands Île de Ré and Île d’Oléron and the continental coast, between the cities of La Rochelle and the naval arsenal of Rochefort, are also tinged green by sediments.

The Pertuis d’Antioche is bordered by a limestone coast dating back to the Cretaceous Period, at which time is was deep under water.