Geography of French Guiana Geography of French Guiana French Guiana is an overseas region of France, located on the northern coast of South America between Suriname and Brazil. See also the article on the geography of Suriname. Northern South America and part of Caribbean South America, bordering the North Atlantic Ocean, between Brazil and Suriname. South America. Total: 91,000 km².<br> Land: 89,150 km².<br> Water: 1,850 km². Total: 1,183 km.<br> Border countries: Brazil 673 km, Suriname 510 km (disputed).<br> Coastline: 378 km. Exclusive economic zone: territorial sea: . Tropical; hot. Low-lying coastal plains rising to hills and small mountains, see Guiana Shield. Bauxite, timber, gold
Geology of French Guiana the Paramaca series, which corresponds to a series of micaschists, aluminous paragneisses and black quartzites whose total thickness is about 1 km. The central granite massifs consist of granite plutons, granodiorites and quartz diorites dating from 2.05 to 2.15 billion years ago. The north of French Guiana corresponds to a synclinorium composed of the Paramaca series on which sandstone and fluviatile conglomerates lie unconformably. Shield rocks in Guyana are all dated between 1.6 and 2.5 billion years ago. The Quaternary lands are located in the northern part of Guyana, near the coast, unconformably on the Paleozoic lands. The coastal plains