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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).
The Paraná Basin (Portuguese: Bacia do Paraná, Spanish: Cuenca del Paraná) is a large cratonic sedimentary basin situated in the central-eastern part of South America. ...
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 Paraguay-Bolivia-Brazil tripoint map. The Paraguay makes a long, gentle curve to the south-southeast before resuming a more south-southwesterly course, dividing the country of Paraguay into two distinct halves: the Gran Chaco region to the west, a largely uninhabited semi-arid region; and the eastern forested departments of the country ...
Paraná (Brazilian Portuguese: ⓘ) is one of the 26 states of Brazil, in the south of the country. It is bordered in the north by São Paulo state, in the east by the Atlantic Ocean, in the south by Santa Catarina state and the province of Misiones, Argentina, and in the west by Mato Grosso do Sul and Paraguay, with the Paraná River as its western boundary. [4]
A flood basalt (or plateau basalt [1]) is the result of a giant volcanic eruption or series of eruptions that covers large stretches of land or the ocean floor with basalt lava. Many flood basalts have been attributed to the onset of a hotspot reaching the surface of the Earth via a mantle plume . [ 2 ]
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.