Planation surfaces of centralwestern Argentina

The region of central western Argentina is situated in a complex geological and tectonic setting with transitional features between major environmental, tectonic, and geomorphological domains. Preserved remnants of planation surfaces, which form the summit of major geological units, occur as discont...

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Detalles Bibliográficos
Publicado: 2014
Materias:
Central Western Argentina
Cratonic areas
Etchplains
Gondwana
Pediplains
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97894007_v_n_p365_Zarate
http://hdl.handle.net/20.500.12110/paper_97894007_v_n_p365_Zarate
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_97894007_v_n_p365_Zarate
record_format dspace
spelling paper:paper_97894007_v_n_p365_Zarate2023-06-08T16:39:09Z Planation surfaces of centralwestern Argentina Central Western Argentina Cratonic areas Etchplains Gondwana Pediplains The region of central western Argentina is situated in a complex geological and tectonic setting with transitional features between major environmental, tectonic, and geomorphological domains. Preserved remnants of planation surfaces, which form the summit of major geological units, occur as discontinuous and isolated exposures with a remarkable geographical distribution along 600 km (33°-39° S). The main goal of this chapter is to summarize the available information and describe the main features and geological context of the planation surfaces preserved in the areas of the San Rafael block, Payenia, the Chical-có plain, and the Chadileuvú block situated in the southern part of Mendoza and western La Pampa provinces, central western Argentina. The common feature of the areas under analysis is the occurrence of remnants of planation surfaces at different altitudes which cut across bedrock of different composition (igneous, metamorphic, and sedimentary units) and varied age ranging from the Middle Proterozoic (Grenvillian age) to Middle Triassic continental sedimentary rocks. The development may have begun in the Triassic, before the Gondwana breakup and more than one planation surface might be present. During the Late Miocene synorogenic deposits covered the planation surface at the San Rafael block, very likely Payenia, and the Chical-có plain; no conclusive evidence is available in the area of the Chadileuvú block. As a result of tectonic activity (circa 7-6 Ma?), the region was fractured, differentially uplifted, and started a general exhumation process that partially removed the Late Miocene sedimentary cover from the San Rafael block and the eastern margin of Chical-có plain. © Springer Science+Business Media Dordrecht 2014. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97894007_v_n_p365_Zarate http://hdl.handle.net/20.500.12110/paper_97894007_v_n_p365_Zarate
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Central Western Argentina
Cratonic areas
Etchplains
Gondwana
Pediplains
spellingShingle Central Western Argentina
Cratonic areas
Etchplains
Gondwana
Pediplains
Planation surfaces of centralwestern Argentina
topic_facet Central Western Argentina
Cratonic areas
Etchplains
Gondwana
Pediplains
description The region of central western Argentina is situated in a complex geological and tectonic setting with transitional features between major environmental, tectonic, and geomorphological domains. Preserved remnants of planation surfaces, which form the summit of major geological units, occur as discontinuous and isolated exposures with a remarkable geographical distribution along 600 km (33°-39° S). The main goal of this chapter is to summarize the available information and describe the main features and geological context of the planation surfaces preserved in the areas of the San Rafael block, Payenia, the Chical-có plain, and the Chadileuvú block situated in the southern part of Mendoza and western La Pampa provinces, central western Argentina. The common feature of the areas under analysis is the occurrence of remnants of planation surfaces at different altitudes which cut across bedrock of different composition (igneous, metamorphic, and sedimentary units) and varied age ranging from the Middle Proterozoic (Grenvillian age) to Middle Triassic continental sedimentary rocks. The development may have begun in the Triassic, before the Gondwana breakup and more than one planation surface might be present. During the Late Miocene synorogenic deposits covered the planation surface at the San Rafael block, very likely Payenia, and the Chical-có plain; no conclusive evidence is available in the area of the Chadileuvú block. As a result of tectonic activity (circa 7-6 Ma?), the region was fractured, differentially uplifted, and started a general exhumation process that partially removed the Late Miocene sedimentary cover from the San Rafael block and the eastern margin of Chical-có plain. © Springer Science+Business Media Dordrecht 2014.
title Planation surfaces of centralwestern Argentina
title_short Planation surfaces of centralwestern Argentina
title_full Planation surfaces of centralwestern Argentina
title_fullStr Planation surfaces of centralwestern Argentina
title_full_unstemmed Planation surfaces of centralwestern Argentina
title_sort planation surfaces of centralwestern argentina
publishDate 2014
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97894007_v_n_p365_Zarate
http://hdl.handle.net/20.500.12110/paper_97894007_v_n_p365_Zarate
_version_ 1769175808914489344

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