Precambrian "proto-Atlantic" ocean in the Southern Hemisphere
The Adamastor Ocean was a "proto-Atlantic" ocean that formed with the break-up of the Rodinia supercontinent c. 780–750 Ma. It separated the Río de la Plata Craton from the Congo Craton. The inversion of the Adamastor Ocean began about 640 Ma with the development of a large back-arc basin along the western margin of the Kalahari Craton, and the ocean closed when Río de la Plata collided with Kalahari about 545 Ma along the sinistral Sierra Ballena Shear Zone.[1] The São Francisco Craton and the Río de la Plata Craton amalgamated 630–620 Ma, closing the Adamastor Ocean on the South American side and forming the Mantiqueira Mountains around 600 Ma.[2]
In 2020 a group of geologists proposed an alternative model for the Adamastor Ocean in which it is reduced to an intracontinental rift system with only some minor oceanic crust developing in its southern part.[3]
^Rapela et al. 2007, 7.6 Tectonic Model, p. 76
^Brito Neves, Campos Neto & Fuck 1999, Mantiqueira branched systems of orogens, pp. 161–162
The AdamastorOcean was a "proto-Atlantic" ocean that formed with the break-up of the Rodinia supercontinent c. 780–750 Ma. It separated the Río de la...
to attempt passing the Cape and penetrate the Indian Ocean, which was Adamastor's domain. Adamastor became the spirit of the Cape of Good Hope, a hideous...
did so the AdamastorOcean further east closed. The opening of the Iapetus Ocean probably postdates the opening of the Puncoviscana Ocean, which is believed...
Congo and Rio de la Plata which closed the AdamastorOcean. c. 540–530 Ma, the closure of the Mozambique Ocean brought India next to Australia–East Antarctica...
events coincided: the opening of the Iapetus Ocean; the closure of the Braziliano, Adamastor, and Mozambique oceans; and the Pan-African orogeny. The result...
of several oceans and aulacogens including the AdamastorOcean, the Goianides Ocean, the Puncoviscana Ocean and the Peri-Franciscano Ocean. Attempts to...
West African and Rio de la Plata cratons on other – formation of AdamastorOcean. c. 800 Ma – With free oxygen levels much higher, carbon cycle is disrupted...
cratons in the Kuunga–Damara orogeny at 530 Ma (southern Gondwana). The AdamastorOcean closed southwards from the Araçuaı́ Belt (São Francisco Craton, now...
Bialik; et al. (Jun 20, 2019). "Two-step closure of the Miocene Indian Ocean Gateway to the Mediterranean". Scientific Reports. 9 (1): 8842. Bibcode:2019NatSR...
Francisco and Río de la Plata cratons formed one plate in the west of the AdamastorOcean. The eastern part of the Uruguayan shield region is crossed by two...
continent of Africa. It is bounded to the south and west by the Atlantic Ocean, and to the north and east by various other municipalities in the Western...
the adjacent waters without ever succeeding in rounding the headland. Adamastor is a Greek-type mythological character invented by the Portuguese poet...
cruiser Adamastor and the gunship Chaimite, besides several river gunboats and other small vessels of the Zambezi Flotilla. During May 1916, Adamastor and...
die opbloei en verval van Mosambiek-eiland. Gordonsbaai & Jeffreysbaai: Adamastor: 2010 Malyn Newitt, Mozambique Island: The Rise and Decline of an East...
Algonquin was an ocean liner built in 1926 for the Clyde-Mallory Line. She was involved in a collision in 1929 and rescued survivors from another in 1935...
low and mid-latitude South Atlantic Ocean - Bulletin de la Société géologique de France, 2009 Angolatitan adamastor, a new sauropod dinosaur and the first...
Normanby, and renamed Norwich City in 1919. She was wrecked in the Pacific Ocean in 1929. For many years her wreck was a sea mark on the atoll of Nikumaroro...
Buta Neto; Maria Luísa Morais; Miguel T. Antunes (2011). "Angolatitan adamastor, a new sauropod dinosaur and the first record from Angola" (PDF). Anais...
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