Pampean orogeny

Paleogeographic reconstruction of Gondwana (in yellow) and Laurentia 550 million years ago during the time of the Pampean orogeny. The Pampean orogeny took place near the right border of the area marked as "Río Plata". Terranes and microcontinents such as Cuyania, Pampia and Chilenia are omitted.

The Pampean orogeny (Spanish: orogenia pampeana) was an orogeny active in the Cambrian in the western margin of the ancient landmass of Gondwana. The orogen's remains can now be observed in central Argentina, in particular at the Sierras de Córdoba[A] and other parts of the eastern[B] Sierras Pampeanas.[1] It is uncertain if the orogeny involved at some point a continental collision. The Pampean orogen can be considered both part of the larger Terra Australis orogen and of the Brasiliano orogeny. The Pampean orogeny was succeeded by the Famatinian orogeny further west.

  1. ^ a b Rapela, C.W.; Pankhurst, R.J; Casquet, C.; Baldo, E.; Saavedra, J.; Galindo, C.; Fanning, C.M. (1998). "The Pampean Orogeny of the southern proto-Andes: Cambrian continental collision in the Sierras de Córdoba" (PDF). In Pankhurst, R.J; Rapela, C.W. (eds.). The Proto-Andean Margin of Gondwana. Vol. 142. Geological Society, London, Special Publications. pp. 181–217. Retrieved 7 December 2015.


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