Paleogeography of the upper Paleozoic basins of southern South America: An overview

The paleogeographic evolution of Late Paleozoic basins located in southern South America is addressed. Three major types of basins are recognized: infracratonic or intraplate, arc-related, and retroarc. Intraplate basins (i.e., Paraná, Chaco-Paraná, Sauce Grande-Colorado, and La Golondrina) are floo...

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Autores principales: Limarino, C.O., Spalletti, L.A.
Formato: JOUR
Materias:
basin evolution
continental crust
intraplate process
marine sediment
paleogeography
Paleozoic
Permian
sedimentation
volcaniclastic deposit
Parana Basin
South America
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_08959811_v22_n3-4_p134_Limarino
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_08959811_v22_n3-4_p134_Limarino2023-10-03T15:42:42Z Paleogeography of the upper Paleozoic basins of southern South America: An overview Limarino, C.O. Spalletti, L.A. basin evolution continental crust intraplate process marine sediment paleogeography Paleozoic Permian sedimentation volcaniclastic deposit Parana Basin South America The paleogeographic evolution of Late Paleozoic basins located in southern South America is addressed. Three major types of basins are recognized: infracratonic or intraplate, arc-related, and retroarc. Intraplate basins (i.e., Paraná, Chaco-Paraná, Sauce Grande-Colorado, and La Golondrina) are floored by continental or quasi-continental crust, with low or moderate subsidence rates and limited magmatic and tectonic activity. Arc-related basins (northern and central Chile, Navidad-Arizaro, Río Blanco, and Calingasta-Uspallata basins and depocenters along Chilean Patagonia) show a very complex tectonic history, widespread magmatic activity, high subsidence rates, and in some cases metamorphism of Late Paleozoic sediments. An intermediate situation corresponds to the retroarc basins (eastern Madre de Dios, Tarija, Paganzo, and Tepuel-Genoa), which lack extensive magmatism and metamorphism but in which coeval tectonism and sedimentation rates were likely more important than those in the intraplate region. According to the stratigraphic distribution of Late Paleozoic sediments, regional-scale discontinuities, and sedimentation pattern changes, five major paleogeographic stages are proposed. The lowermost is restricted to the proto-Pacific and retroarc basins, corresponds to the Mississippian (stage 1), and is characterized by shallow marine and transitional siliciclastic sediments. During stage 2 (Early Pennsylvanian), glacial-postglacial sequences dominated the infracratonic (or intraplate) and retroarc basins, and terrigenous shallow marine sediments prevailed in arc-related basins. Stage 3 (Late Pennsylvanian-Early Cisuralian) shows the maximum extension of glacial-postglacial sediments in the Paraná and Sauce Grande-Colorado basins (intraplate region), whereas fluvial deposits interfingering with thin intervals of shallow marine sediments prevailed in the retroarc basins. To the west, arc-related basins were dominated by coastal to deep marine conditions (including turbiditic successions). In the Late Cisuralian (stage 4), important differences in sedimentation patterns are registered for the western arc-related basins and eastern intraplate basins. The former were locally dominated by volcaniclastic sediments or marine deposits, and the intraplate basins are characterized by shallow marine conditions punctuated by several episodes of deltaic progradation. Finally, in the Late Permian (stage 5), volcanism and volcaniclastic sedimentation dominated in basins located along the western South American margin. The intraplate basins in turn were characterized by T-R cycles composed of shallow marine, deltaic, and fluvial siliciclastic deposits. © 2006 Elsevier Ltd. All rights reserved. Fil:Limarino, C.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08959811_v22_n3-4_p134_Limarino
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic basin evolution
continental crust
intraplate process
marine sediment
paleogeography
Paleozoic
Permian
sedimentation
volcaniclastic deposit
Parana Basin
South America
spellingShingle basin evolution
continental crust
intraplate process
marine sediment
paleogeography
Paleozoic
Permian
sedimentation
volcaniclastic deposit
Parana Basin
South America
Limarino, C.O.
Spalletti, L.A.
Paleogeography of the upper Paleozoic basins of southern South America: An overview
topic_facet basin evolution
continental crust
intraplate process
marine sediment
paleogeography
Paleozoic
Permian
sedimentation
volcaniclastic deposit
Parana Basin
South America
description The paleogeographic evolution of Late Paleozoic basins located in southern South America is addressed. Three major types of basins are recognized: infracratonic or intraplate, arc-related, and retroarc. Intraplate basins (i.e., Paraná, Chaco-Paraná, Sauce Grande-Colorado, and La Golondrina) are floored by continental or quasi-continental crust, with low or moderate subsidence rates and limited magmatic and tectonic activity. Arc-related basins (northern and central Chile, Navidad-Arizaro, Río Blanco, and Calingasta-Uspallata basins and depocenters along Chilean Patagonia) show a very complex tectonic history, widespread magmatic activity, high subsidence rates, and in some cases metamorphism of Late Paleozoic sediments. An intermediate situation corresponds to the retroarc basins (eastern Madre de Dios, Tarija, Paganzo, and Tepuel-Genoa), which lack extensive magmatism and metamorphism but in which coeval tectonism and sedimentation rates were likely more important than those in the intraplate region. According to the stratigraphic distribution of Late Paleozoic sediments, regional-scale discontinuities, and sedimentation pattern changes, five major paleogeographic stages are proposed. The lowermost is restricted to the proto-Pacific and retroarc basins, corresponds to the Mississippian (stage 1), and is characterized by shallow marine and transitional siliciclastic sediments. During stage 2 (Early Pennsylvanian), glacial-postglacial sequences dominated the infracratonic (or intraplate) and retroarc basins, and terrigenous shallow marine sediments prevailed in arc-related basins. Stage 3 (Late Pennsylvanian-Early Cisuralian) shows the maximum extension of glacial-postglacial sediments in the Paraná and Sauce Grande-Colorado basins (intraplate region), whereas fluvial deposits interfingering with thin intervals of shallow marine sediments prevailed in the retroarc basins. To the west, arc-related basins were dominated by coastal to deep marine conditions (including turbiditic successions). In the Late Cisuralian (stage 4), important differences in sedimentation patterns are registered for the western arc-related basins and eastern intraplate basins. The former were locally dominated by volcaniclastic sediments or marine deposits, and the intraplate basins are characterized by shallow marine conditions punctuated by several episodes of deltaic progradation. Finally, in the Late Permian (stage 5), volcanism and volcaniclastic sedimentation dominated in basins located along the western South American margin. The intraplate basins in turn were characterized by T-R cycles composed of shallow marine, deltaic, and fluvial siliciclastic deposits. © 2006 Elsevier Ltd. All rights reserved.
format JOUR
author Limarino, C.O.
Spalletti, L.A.
author_facet Limarino, C.O.
Spalletti, L.A.
author_sort Limarino, C.O.
title Paleogeography of the upper Paleozoic basins of southern South America: An overview
title_short Paleogeography of the upper Paleozoic basins of southern South America: An overview
title_full Paleogeography of the upper Paleozoic basins of southern South America: An overview
title_fullStr Paleogeography of the upper Paleozoic basins of southern South America: An overview
title_full_unstemmed Paleogeography of the upper Paleozoic basins of southern South America: An overview
title_sort paleogeography of the upper paleozoic basins of southern south america: an overview
url http://hdl.handle.net/20.500.12110/paper_08959811_v22_n3-4_p134_Limarino
work_keys_str_mv AT limarinoco paleogeographyoftheupperpaleozoicbasinsofsouthernsouthamericaanoverview
AT spallettila paleogeographyoftheupperpaleozoicbasinsofsouthernsouthamericaanoverview
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