Cariri Velhos belt

The Cariri Velhos belt is a belt of rocks in Brazil that were deformed and metamorphosed in the Early Neoproterozoic.^[1] The belt runs from the Atlantic more than 700 km inland in a SWW direction. The width of the belt varies from 100 to 50 km.^[2]

Seen in a map the Cariri Velhos belt lies intercalated in mosic with various Brasiliano cycle belts in the Borborema Province, a geologic province in Northeastern Brazil. The belt include a series of orthogneisses, metavolcanic and metasedimentary rocks. It is not known if the plate tectonic events that led to the formation of the belts are related to the assembly of the supercontinent Rodinia.^[1]

References

1 2 dos Santos, Edilton José; Van Schmus, William Randall; Kozuch, Marianne; de Brito Neves, Benjamim Bley (2010). "The Cariris Velhos tectonic event in Northeast Brazil". Journal of South American Earth Sciences 29: 61–76. |access-date= requires |url= (help)
↑ Pinho Guimarães, Ignez; Van Schmus, William R.; de Brito Neves, Benjamin B.; Bretas Bittar, Sheila M.; Silva Filho, Adejardo F.; Armstrong, Richard (2012). "U–Pb zircon ages of orthogneisses and supracrustal rocks of the Cariris Velhos belt: Onset of Neoproterozoic rifting in the Borborema Province, NE Brazil". Precambrian Research: 192–195. |access-date= requires |url= (help)

Major South American geological features

Plates	Antarctic Plate Caribbean Plate Cocos Plate Nazca Plate Scotia Plate South American Plate

Cratons and shields	Amazonian Craton Arequipa-Antofalla Craton Atlantic Shield Central Brazilian Shield Guiana Shield Paranapanema Block Río Apa Craton Río de la Plata Craton São Francisco Craton Uruguayan Shield

Faults and shear zones	Atacama Fault Boconó Fault Cochabamba Fault Zone Cordillera Blanca Fault Zone Dolores-Guayaquil Megashear Domeyko Fault El Pilar Fault System El Tigre Fault Liquiñe-Ofqui Fault Zone Magallanes-Fagnano Fault Morón Fault System Oca-Ancón Fault System Pernambuco Fault San Ramón Fault Sarandí del Yí Shear Zone Sierra Ballena Shear Zone Sobral Fault Trans Brazilian Lineament

Rifts and grabens	Aguapeí Aulacogen Amazon Rift Asunción Rift Cuyo Rift Espino Graben Neuquén Rifts Paramirim Aulacogen Salta Rifts

Sedimentary basins	Altiplano Basin Amazon Basin Andean foreland basins Central Brazil Basin Colorado Basin Cuyo Basin Eastern Venezuela Basin Golfo San Jorge Basin Magallanes Basin Malvinas Basin Neuquén Basin Pantanal Basin Paraíba Basin Paraná Basin Salta Basin Solimões Basin

Orogens	Andean Orogen Brasiliano Orogens Cariri Velhos Belt Famatinian Orogen Gondwanide Orogen Juruá Orogen Pampean Orogen San Rafael Orogen Sunsás Orogen Terra Australis Orogen Tilcarian Orogen

Volcanoes and hotspots	Andean Volcanic Belt Ascension hotspot Caribbean large igneous province Central Atlantic magmatic province Fernando hotspot Galápagos hotspot Juan Fernández hotspot Paraná and Etendeka traps San Felix hotspot Trindade hotspot

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