Charles Darwin and the oLdest Glacial events in Patagonia: The Erratic blocks of the río santa Cruz valley

Although the depositational environment assigned by Darwin to the large erratic blocks and gravels in the Río Santa Cruz valley has been reinterpreted, his geomorphological and stratigraphic observations are still in force. The large erratic blocks he described as crowning the Condor Cliff terrace a...

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Detalles Bibliográficos
Autores principales: Strelin, Jorge Adrián, Malagnino, Eduardo Cayetano
Publicado: 2009
Materias:
Darwin
Erratic blocks
Glaciations
Moraines
Patagonia
depositional environment
geomorphology
glaciation
glaciofluvial deposit
Last Interglacial
moraine
outburst
stratigraphy
South America
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v64_n1_p101_Strelin
http://hdl.handle.net/20.500.12110/paper_00044822_v64_n1_p101_Strelin
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00044822_v64_n1_p101_Strelin
record_format dspace
spelling paper:paper_00044822_v64_n1_p101_Strelin2023-06-08T14:26:11Z Charles Darwin and the oLdest Glacial events in Patagonia: The Erratic blocks of the río santa Cruz valley Strelin, Jorge Adrián Malagnino, Eduardo Cayetano Darwin Erratic blocks Glaciations Moraines Patagonia depositional environment geomorphology glaciation glaciofluvial deposit Last Interglacial moraine outburst stratigraphy Patagonia South America Although the depositational environment assigned by Darwin to the large erratic blocks and gravels in the Río Santa Cruz valley has been reinterpreted, his geomorphological and stratigraphic observations are still in force. The large erratic blocks he described as crowning the Condor Cliff terrace and spread at the bottom of the valley just east of this locality (Sites 2 and 3), are now interpreted as indicators of the maximum glacial expansion in Patagonia. Similar blocks, though of a different lithology, accumulated over a lower terrace located up-valley (Site 4), are now linked to moraines and glacifluvial terraces of the Penultimate Glaciation. Finally, in addition to the erratic block discovered by Darwin in the lower Río Santa Cruz valley (Site 1), there are others - recently discovered - which probably account for a catastrophic event ascribed to a big glacier-lake outburst during the last interglacial. Fil:Strelin, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Malagnino, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v64_n1_p101_Strelin http://hdl.handle.net/20.500.12110/paper_00044822_v64_n1_p101_Strelin
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Darwin
Erratic blocks
Glaciations
Moraines
Patagonia
depositional environment
geomorphology
glaciation
glaciofluvial deposit
Last Interglacial
moraine
outburst
stratigraphy
Patagonia
South America
spellingShingle Darwin
Erratic blocks
Glaciations
Moraines
Patagonia
depositional environment
geomorphology
glaciation
glaciofluvial deposit
Last Interglacial
moraine
outburst
stratigraphy
Patagonia
South America
Strelin, Jorge Adrián
Malagnino, Eduardo Cayetano
Charles Darwin and the oLdest Glacial events in Patagonia: The Erratic blocks of the río santa Cruz valley
topic_facet Darwin
Erratic blocks
Glaciations
Moraines
Patagonia
depositional environment
geomorphology
glaciation
glaciofluvial deposit
Last Interglacial
moraine
outburst
stratigraphy
Patagonia
South America
description Although the depositational environment assigned by Darwin to the large erratic blocks and gravels in the Río Santa Cruz valley has been reinterpreted, his geomorphological and stratigraphic observations are still in force. The large erratic blocks he described as crowning the Condor Cliff terrace and spread at the bottom of the valley just east of this locality (Sites 2 and 3), are now interpreted as indicators of the maximum glacial expansion in Patagonia. Similar blocks, though of a different lithology, accumulated over a lower terrace located up-valley (Site 4), are now linked to moraines and glacifluvial terraces of the Penultimate Glaciation. Finally, in addition to the erratic block discovered by Darwin in the lower Río Santa Cruz valley (Site 1), there are others - recently discovered - which probably account for a catastrophic event ascribed to a big glacier-lake outburst during the last interglacial.
author Strelin, Jorge Adrián
Malagnino, Eduardo Cayetano
author_facet Strelin, Jorge Adrián
Malagnino, Eduardo Cayetano
author_sort Strelin, Jorge Adrián
title Charles Darwin and the oLdest Glacial events in Patagonia: The Erratic blocks of the río santa Cruz valley
title_short Charles Darwin and the oLdest Glacial events in Patagonia: The Erratic blocks of the río santa Cruz valley
title_full Charles Darwin and the oLdest Glacial events in Patagonia: The Erratic blocks of the río santa Cruz valley
title_fullStr Charles Darwin and the oLdest Glacial events in Patagonia: The Erratic blocks of the río santa Cruz valley
title_full_unstemmed Charles Darwin and the oLdest Glacial events in Patagonia: The Erratic blocks of the río santa Cruz valley
title_sort charles darwin and the oldest glacial events in patagonia: the erratic blocks of the río santa cruz valley
publishDate 2009
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v64_n1_p101_Strelin
http://hdl.handle.net/20.500.12110/paper_00044822_v64_n1_p101_Strelin
work_keys_str_mv AT strelinjorgeadrian charlesdarwinandtheoldestglacialeventsinpatagoniatheerraticblocksoftheriosantacruzvalley
AT malagninoeduardocayetano charlesdarwinandtheoldestglacialeventsinpatagoniatheerraticblocksoftheriosantacruzvalley
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