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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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00044822_v64_n1_p101_Strelin http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00044822_v64_n1_p101_Strelin_oai |
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I28-R145-paper_00044822_v64_n1_p101_Strelin_oai2020-10-19 Strelin, J. Malagnino, E. 2009 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. application/pdf http://hdl.handle.net/20.500.12110/paper_00044822_v64_n1_p101_Strelin info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Rev. Asoc. Geol. Argent. 2009;64(1):101-108 Darwin Erratic blocks Glaciations Moraines Patagonia depositional environment geomorphology glaciation glaciofluvial deposit Last Interglacial moraine outburst stratigraphy Patagonia South America Charles Darwin and the oLdest Glacial events in Patagonia: The Erratic blocks of the río santa Cruz valley info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00044822_v64_n1_p101_Strelin_oai |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-145 |
| collection |
Repositorio Digital de la Universidad de Buenos Aires (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, J. Malagnino, E. 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. |
| format |
Artículo Artículo publishedVersion |
| author |
Strelin, J. Malagnino, E. |
| author_facet |
Strelin, J. Malagnino, E. |
| author_sort |
Strelin, J. |
| 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 |
http://hdl.handle.net/20.500.12110/paper_00044822_v64_n1_p101_Strelin http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00044822_v64_n1_p101_Strelin_oai |
| work_keys_str_mv |
AT strelinj charlesdarwinandtheoldestglacialeventsinpatagoniatheerraticblocksoftheriosantacruzvalley AT malagninoe charlesdarwinandtheoldestglacialeventsinpatagoniatheerraticblocksoftheriosantacruzvalley |
| _version_ |
1766026484716142592 |