South America descendant are about 37%. In Peru, European descendants are the third group in number (15%). Mestizos (mixed European and Amerindian) are the largest ethnic group in Paraguay, Venezuela, Colombia and Ecuador and the second group in Peru. South America is also home to one of the largest populations of Africans. This group is significantly present in Brazil, Colombia, Guyana, Suriname, French Guiana, Venezuela and Ecuador. Brazil followed by Peru have the largest Japanese, Korean and Chinese communities in South America. East Indians form the largest ethnic group in Guyana and Suriname. In many places indigenous people still practice a traditional
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