Pampia: A large cratonic block missing in the Rodinia supercontinent

The large cratonic block of Pampia, at present in southern South America, is commonly missing in recent comprehensive reconstructions of Rodinia. This block was the conjugate margin of the Amazonia craton that corresponds to the W-NW-trending segment of the Sunsás orogen. This segment developed betw...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Ramos, Victor Alberto, Vujovich, Graciela Irene
Publicado: 2010
Materias:
Amazonia
Andes
Clymene
Grenville
Mesoproterozoic
Paranapanema
Cambrian
collision zone
craton
crustal structure
metamorphism
orogeny
Paleozoic
Proterozoic
reconstruction
Rodinia
supercontinent
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02643707_v50_n3-4_p243_Ramos
http://hdl.handle.net/20.500.12110/paper_02643707_v50_n3-4_p243_Ramos
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_02643707_v50_n3-4_p243_Ramos
record_format dspace
spelling paper:paper_02643707_v50_n3-4_p243_Ramos2023-06-08T15:22:58Z Pampia: A large cratonic block missing in the Rodinia supercontinent Ramos, Victor Alberto Vujovich, Graciela Irene Amazonia Andes Clymene Grenville Mesoproterozoic Paranapanema Cambrian collision zone craton crustal structure metamorphism orogeny Paleozoic Proterozoic reconstruction Rodinia supercontinent Amazonia Andes The large cratonic block of Pampia, at present in southern South America, is commonly missing in recent comprehensive reconstructions of Rodinia. This block was the conjugate margin of the Amazonia craton that corresponds to the W-NW-trending segment of the Sunsás orogen. This segment developed between Sucre in Bolivia and Corumbá in Brazil as a result of a Mesoproterozoic collision. The western margin of Pampia partially coincides with the southern part of the Arequipa-Antofalla terrane that was also amalgamated during the Mesoproterozoic. The Cuyania terrane, a Laurentian rifted continental block, was accreted to the southern sector of this margin of Pampia in middle Ordovician times. The northern sector of the eastern margin of Pampia is the lower plate of the Brasiliano belt developed along the Paranapanema craton during the early Cambrian collision associated with the closure of the Clymene Ocean. The southern sector of the eastern margin partially coincides with the southern extension of the Transbrasiliano lineament, which juxtaposed the Rio de La Plata Craton with the Pampia cratonic block. Along this eastern margin the Pampean-Paraguay orogen was formed during the late Brasiliano cycle in latest Proterozoic-Early Cambrian time. The southern margin was generated by the collision of Patagonia during late Paleozoic times. This cratonic block of Pampia, so defined, has western and northern sectors formed by Mesoproterozoic orogens, while the eastern sector is partially formed by juvenile Neoproterozoic crust, although older rocks cannot be ruled out. The Pampia cratonic block was the locus of several magmatic belts associated with important metamorphism during the Paleozoic and preserved in the central part at lower crustal levels. © 2010 Elsevier Ltd. Fil:Ramos, V.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vujovich, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02643707_v50_n3-4_p243_Ramos http://hdl.handle.net/20.500.12110/paper_02643707_v50_n3-4_p243_Ramos
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Amazonia
Andes
Clymene
Grenville
Mesoproterozoic
Paranapanema
Cambrian
collision zone
craton
crustal structure
metamorphism
orogeny
Paleozoic
Proterozoic
reconstruction
Rodinia
supercontinent
Amazonia
Andes
spellingShingle Amazonia
Andes
Clymene
Grenville
Mesoproterozoic
Paranapanema
Cambrian
collision zone
craton
crustal structure
metamorphism
orogeny
Paleozoic
Proterozoic
reconstruction
Rodinia
supercontinent
Amazonia
Andes
Ramos, Victor Alberto
Vujovich, Graciela Irene
Pampia: A large cratonic block missing in the Rodinia supercontinent
topic_facet Amazonia
Andes
Clymene
Grenville
Mesoproterozoic
Paranapanema
Cambrian
collision zone
craton
crustal structure
metamorphism
orogeny
Paleozoic
Proterozoic
reconstruction
Rodinia
supercontinent
Amazonia
Andes
description The large cratonic block of Pampia, at present in southern South America, is commonly missing in recent comprehensive reconstructions of Rodinia. This block was the conjugate margin of the Amazonia craton that corresponds to the W-NW-trending segment of the Sunsás orogen. This segment developed between Sucre in Bolivia and Corumbá in Brazil as a result of a Mesoproterozoic collision. The western margin of Pampia partially coincides with the southern part of the Arequipa-Antofalla terrane that was also amalgamated during the Mesoproterozoic. The Cuyania terrane, a Laurentian rifted continental block, was accreted to the southern sector of this margin of Pampia in middle Ordovician times. The northern sector of the eastern margin of Pampia is the lower plate of the Brasiliano belt developed along the Paranapanema craton during the early Cambrian collision associated with the closure of the Clymene Ocean. The southern sector of the eastern margin partially coincides with the southern extension of the Transbrasiliano lineament, which juxtaposed the Rio de La Plata Craton with the Pampia cratonic block. Along this eastern margin the Pampean-Paraguay orogen was formed during the late Brasiliano cycle in latest Proterozoic-Early Cambrian time. The southern margin was generated by the collision of Patagonia during late Paleozoic times. This cratonic block of Pampia, so defined, has western and northern sectors formed by Mesoproterozoic orogens, while the eastern sector is partially formed by juvenile Neoproterozoic crust, although older rocks cannot be ruled out. The Pampia cratonic block was the locus of several magmatic belts associated with important metamorphism during the Paleozoic and preserved in the central part at lower crustal levels. © 2010 Elsevier Ltd.
author Ramos, Victor Alberto
Vujovich, Graciela Irene
author_facet Ramos, Victor Alberto
Vujovich, Graciela Irene
author_sort Ramos, Victor Alberto
title Pampia: A large cratonic block missing in the Rodinia supercontinent
title_short Pampia: A large cratonic block missing in the Rodinia supercontinent
title_full Pampia: A large cratonic block missing in the Rodinia supercontinent
title_fullStr Pampia: A large cratonic block missing in the Rodinia supercontinent
title_full_unstemmed Pampia: A large cratonic block missing in the Rodinia supercontinent
title_sort pampia: a large cratonic block missing in the rodinia supercontinent
publishDate 2010
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02643707_v50_n3-4_p243_Ramos
http://hdl.handle.net/20.500.12110/paper_02643707_v50_n3-4_p243_Ramos
work_keys_str_mv AT ramosvictoralberto pampiaalargecratonicblockmissingintherodiniasupercontinent
AT vujovichgracielairene pampiaalargecratonicblockmissingintherodiniasupercontinent
_version_ 1768541560592400384

Ejemplares similares