Guyana at the 2008 Summer Olympics The appearance of Guyana's delegation in Beijing marked the fifteenth Guyanese Olympic delegation to appear at an Olympic games, which started with their participation as British Guiana in the 1948 Summer Olympics. There were no medalists from Guyana at the Beijing Olympics. Roberts was Guyana's flagbearer at the ceremonies in Beijing. Guyana is a former British colony that extends from the northern coast of South America. It is adjacent to Venezuela, Brazil, and Suriname, and is within the vicinity of the island nation of Trinidad and Tobago. Athletes from Guyanese delegations have appeared at the Olympics since the 1948 Summer
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