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The Chiribiquete Plateau is a sandstone topped plateau with an elevation of 900 m (2,953 ft) that forms the western edge of the shield. The plateau is separated from the eastern Andes by the thick Neogene sediments of the Sub-Andean Trough that runs along the northern and western rim of the Guiana Shield.
The northern Guiana Shield, including Guyana is separated from Southern Guiana Shield by ENE to NE trending Tumbes /Guayaquil - Tacutu Tectonic Lineament. This is a major regional pre-Cambrian shear zone / mega-shear which is believed to have been re-activated several times.
Mount Roraima is a flat-topped mountain, typical of the Guyana Shield, [12] with an elevation of about 1,200 m (3,900 ft) in the southeast and only about 600 m (2,000 ft) in the northwest. [7] The south, southeast, east, northeast and northwest faces are all formed by straight cliffs up to about 1,000 m (3,300 ft) high.
The Atlantic Shield. The Amazonian (Brazilian) Shield on the eastern bulge portion of South America. Bordering this is the Guiana Shield to the north, and the Platian Shield to the south. The Uruguayan Shield; The Baltic (Fennoscandian) Shield is located in eastern Norway, Finland and Sweden. The African (Ethiopian) Shield is located in Africa.
It is geologically part of the Guayana Shield and biogeographically part of the Guayana Highlands.The mountains form the divide between the Orinoco Valley to the north and the Amazon Basin to the south. They also serve as a natural boundary in the east–west direction, where they extend 800 kilometres (500 mi) to form a border marker between ...
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Guyana's geographical location, its sparsely populated rain-forest regions, and its substantial Amerindian population differentiate it from English-speaking Caribbean countries. Its blend of the two dominant cultures, Indo-Guyanese and Afro-Guyanese, gives it similarities to Trinidad and Tobago and Suriname , and distinguishes it from other ...