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The plateau reaches a height of 1,300 m and stands on a layer of basalt with a thickness of 2,000 m. [2] Most of the water from the plateau flows into the Río de la Plata estuary via the Paraná and Paraguay rivers. [2] Iguazu Falls is located on the western edge of the plateau.
The basalt samples at Paraná and Etendeka have an age of about 132 Ma, during the Valanginian stage of the Early Cretaceous. [3] Indirectly, the rifting and extension are probably the origin of the Paraná and Etendeka traps and it could be the origin of the Gough and Tristan da Cunha Islands as well, as they are connected by the Walvis Ridge (Gough/Tristan hotspot).
Until today, the surface area still reaches more than 1,000,000 square kilometres (390,000 sq mi). The thickness of the flood basalts amounts to 2,000 m (6,600 ft) and their area extends to the Etendeka basin in Namibia and Angola even into Southwestern Africa.
The plateau slopes moderately to east and south, its remarkably uniform surface interrupted only by the narrow valleys carved by the westward-flowing tributaries of the Río Paraná. The Northern Upland, the Central Hill Belt, and the Central Lowland constitute the lower terrain lying between the escarpment and the Río Paraguay.
The Brazilian Highlands or Brazilian Plateau (Portuguese: Planalto Brasileiro) is an extensive geographical region covering most of the eastern, southern and central portions of Brazil, in all some 4,500,000 km 2 (1,930,511 sq mi) or approximately half of the country's land area.
The Paraná River (Portuguese: Rio Paraná [ˈʁi.u paɾaˈna] ⓘ; Spanish: Río Paraná [ˈri.o paɾaˈna] ⓘ; Guarani: Ysyry Parana) is a river in south-central South America, running through Brazil, Paraguay, and Argentina for some 4,880 kilometres (3,030 mi). [3] Among South American rivers, it is second in length only to the Amazon River.
The ecoregion consists of an area of plateau and low river basin in Cambodia, Thailand, Laos, Vietnam and Myanmar and includes: . In Thailand the large Khorat Plateau, the higher elevation plains of the Chao Phraya River basin, the foothills of the Tenasserim Hills and other dry areas of the lower slopes of the Khun Tan, Phi Pan Nam and Phetchabun mountain ranges of the north of the country.
Guarapuava is a municipality in the state of Paraná in Brazil. It is the largest municipality in that state by area. Considered a regional development hub with a strong influence on neighboring municipalities, it is also part of a railroad junction of national importance called the Mercosur corridor, between the municipalities of Foz do Iguaçu and Curitiba.