Paleomagnetic evidence of an early Paleozoic rotated terrane in northwest Argentina: A clue for Condwana-Laurentia interaction?

Paleomagnetic results from three Lower Ordovician units in northwest Argentina are reported. When assessed with available geologic evidence, these data permit the definition of the Puna Oriental-Famatina rotated terrane. Paleogeographic reconstructions based on these paleomagnetic results place Puna...

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Detalles Bibliográficos
Autores principales: Conti, C.M., Rapalini, A.E., Coira, B., Koukharsky, M.
Formato: JOUR
Materias:
Gondwana
Laurentia
Ordovician
palaeogeography
palaeomagnetism
rotated terrane
Argentina
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00917613_v24_n10_p953_Conti
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:Paleomagnetic results from three Lower Ordovician units in northwest Argentina are reported. When assessed with available geologic evidence, these data permit the definition of the Puna Oriental-Famatina rotated terrane. Paleogeographic reconstructions based on these paleomagnetic results place Puna Oriental-Famatina in the South Iapetus ocean, close to the Gondwana margin and near some of the Lower-Middle Ordovician Central Mobile belt terranes of the Northern Appalachians. The accretion of Puna Oriental-Famatina may have resulted from the closure of this ocean in Middle Ordovician time.

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