The high andean Cordillera of Central Argentina and chile along the Piuquenes pass-cordon del Portillo transect: Darwin's pioneering observations compared with modern Geology

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The geological observations made by Darwin in 1835 during his crossing of the Andes from Santiago to Mendoza via the Piuquenes Pass and Cordón del Portillo are compared with the present geological knowledge of the Cordillera Principal and Cordillera Frontal at 33°-34°S. The analysis of the complex s...

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Autores principales:	Giambiagi, Laura Beatriz, Tunik, Maísa Andrea, Ramos, Victor Alberto
Publicado:	2009
Materias:	Metamorphic rocks Provenance Structure Synorogenic deposits Uplift deformation fold and thrust belt foreland basin metamorphic rock provenance tectonic evolution uplift Andes Argentina Chile South America
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v64_n1_p43_Giambiagi http://hdl.handle.net/20.500.12110/paper_00044822_v64_n1_p43_Giambiagi
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00044822_v64_n1_p43_Giambiagi
record_format	dspace
spelling	paper:paper_00044822_v64_n1_p43_Giambiagi2023-06-08T14:26:13Z The high andean Cordillera of Central Argentina and chile along the Piuquenes pass-cordon del Portillo transect: Darwin's pioneering observations compared with modern Geology Giambiagi, Laura Beatriz Tunik, Maísa Andrea Ramos, Victor Alberto Metamorphic rocks Provenance Structure Synorogenic deposits Uplift deformation fold and thrust belt foreland basin metamorphic rock provenance tectonic evolution uplift Andes Argentina Chile South America The geological observations made by Darwin in 1835 during his crossing of the Andes from Santiago to Mendoza via the Piuquenes Pass and Cordón del Portillo are compared with the present geological knowledge of the Cordillera Principal and Cordillera Frontal at 33°-34°S. The analysis of the complex stratigraphy of the Cordillera Principal, the imbricated structure of the Aconcagua fold and thrust belt, as well as the stratigraphy and structure of the inter mountain foreland Tunuyán Basin, allows to assess the pioneer observations of Darwin. He recognized the old metamorphic basement and the granitoids and volcanic sequences of late Paleozoic to Triassic age of the Cordillera Frontal, established the Cretaceous age of the marine successions cropping out along the eastern Cordillera Principal and studied the conglomeratic deposits associated with the uplift of the Cordillera in the Alto Tunuyán Basin. Based on the study of clast provenance of the synorogenic deposits of the Alto Tunuyán Basin, Darwin recognized that the Cordillera Frontal was uplifted later than the Cordillera Principal. The present knowledge of this sector of the Andean Cordillera confirms his pioneer observations and show that Darwin was one of the first scientists ever in realizing that in an orogenic system the sequence of uplift and deformation proceeds from hinterland towards foreland, according to a process that is exceptionally well-illustrated along the Piuquenes-Cordón del Portillo transect. Fil:Giambiagi, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Tunik, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ramos, V.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v64_n1_p43_Giambiagi http://hdl.handle.net/20.500.12110/paper_00044822_v64_n1_p43_Giambiagi
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Metamorphic rocks Provenance Structure Synorogenic deposits Uplift deformation fold and thrust belt foreland basin metamorphic rock provenance tectonic evolution uplift Andes Argentina Chile South America
spellingShingle	Metamorphic rocks Provenance Structure Synorogenic deposits Uplift deformation fold and thrust belt foreland basin metamorphic rock provenance tectonic evolution uplift Andes Argentina Chile South America Giambiagi, Laura Beatriz Tunik, Maísa Andrea Ramos, Victor Alberto The high andean Cordillera of Central Argentina and chile along the Piuquenes pass-cordon del Portillo transect: Darwin's pioneering observations compared with modern Geology
topic_facet	Metamorphic rocks Provenance Structure Synorogenic deposits Uplift deformation fold and thrust belt foreland basin metamorphic rock provenance tectonic evolution uplift Andes Argentina Chile South America
description	The geological observations made by Darwin in 1835 during his crossing of the Andes from Santiago to Mendoza via the Piuquenes Pass and Cordón del Portillo are compared with the present geological knowledge of the Cordillera Principal and Cordillera Frontal at 33°-34°S. The analysis of the complex stratigraphy of the Cordillera Principal, the imbricated structure of the Aconcagua fold and thrust belt, as well as the stratigraphy and structure of the inter mountain foreland Tunuyán Basin, allows to assess the pioneer observations of Darwin. He recognized the old metamorphic basement and the granitoids and volcanic sequences of late Paleozoic to Triassic age of the Cordillera Frontal, established the Cretaceous age of the marine successions cropping out along the eastern Cordillera Principal and studied the conglomeratic deposits associated with the uplift of the Cordillera in the Alto Tunuyán Basin. Based on the study of clast provenance of the synorogenic deposits of the Alto Tunuyán Basin, Darwin recognized that the Cordillera Frontal was uplifted later than the Cordillera Principal. The present knowledge of this sector of the Andean Cordillera confirms his pioneer observations and show that Darwin was one of the first scientists ever in realizing that in an orogenic system the sequence of uplift and deformation proceeds from hinterland towards foreland, according to a process that is exceptionally well-illustrated along the Piuquenes-Cordón del Portillo transect.
author	Giambiagi, Laura Beatriz Tunik, Maísa Andrea Ramos, Victor Alberto
author_facet	Giambiagi, Laura Beatriz Tunik, Maísa Andrea Ramos, Victor Alberto
author_sort	Giambiagi, Laura Beatriz
title	The high andean Cordillera of Central Argentina and chile along the Piuquenes pass-cordon del Portillo transect: Darwin's pioneering observations compared with modern Geology
title_short	The high andean Cordillera of Central Argentina and chile along the Piuquenes pass-cordon del Portillo transect: Darwin's pioneering observations compared with modern Geology
title_full	The high andean Cordillera of Central Argentina and chile along the Piuquenes pass-cordon del Portillo transect: Darwin's pioneering observations compared with modern Geology
title_fullStr	The high andean Cordillera of Central Argentina and chile along the Piuquenes pass-cordon del Portillo transect: Darwin's pioneering observations compared with modern Geology
title_full_unstemmed	The high andean Cordillera of Central Argentina and chile along the Piuquenes pass-cordon del Portillo transect: Darwin's pioneering observations compared with modern Geology
title_sort	high andean cordillera of central argentina and chile along the piuquenes pass-cordon del portillo transect: darwin's pioneering observations compared with modern geology
publishDate	2009
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v64_n1_p43_Giambiagi http://hdl.handle.net/20.500.12110/paper_00044822_v64_n1_p43_Giambiagi
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The high andean Cordillera of Central Argentina and chile along the Piuquenes pass-cordon del Portillo transect: Darwin's pioneering observations compared with modern Geology

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