Push moraines in the upper valley of Santa Cruz river, southwest Argentina. Structural analysis and relationship with Late Pleistocene paleoclimate
The upper cliff of the Santa Cruz River was used to assess the proglacial environments of the Argentino Glacier outlet of Late Pleistocene age. These cliffs show glaciolacustrine, fluvioglacial and till deposits, where only the first one are deformed. Glacial landforms in the area and these structur...
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2015
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08959811_v57_n_p1_Goyanes http://hdl.handle.net/20.500.12110/paper_08959811_v57_n_p1_Goyanes |
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paper:paper_08959811_v57_n_p1_Goyanes2023-06-08T15:48:46Z Push moraines in the upper valley of Santa Cruz river, southwest Argentina. Structural analysis and relationship with Late Pleistocene paleoclimate Goyanes, Gabriel Alejandro Massabie, Armando Carlos Argentina Glacial landforms Last Glaciation Push moraines Santa Cruz river Southern Patagonia drumlin glacial landform glaciotectonics ice sheet last glaciation overturn Pleistocene push moraine thrust Argentina Patagonia Santa Cruz River [Santa Cruz] Santa Cruz [Argentina] The upper cliff of the Santa Cruz River was used to assess the proglacial environments of the Argentino Glacier outlet of Late Pleistocene age. These cliffs show glaciolacustrine, fluvioglacial and till deposits, where only the first one are deformed. Glacial landforms in the area and these structures suggest that the ice mass advanced, topographically controlled, towards the east from the Patagonian Ice Sheet pushing up the proglacial sediments.The spatial arrangement of thrusts and overturned folds, the drumlins-flutes moraine directions and the end moraines shape, allow inferring the dynamic and the Argentino glacier profile. Detailed analyses of the glaciotectonic structures indicate that these have two origins: load in the north with stress transfer to the southeast, and push from the west. Through the analysis of deformed sediments, their thickness and their sedimentary and structural features, three zones of deformations were recognized. Each of these zones was associated to glacial advances because of changes of the regional climate conditions. © 2014 Elsevier Ltd. Fil:Goyanes, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Massabie, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08959811_v57_n_p1_Goyanes http://hdl.handle.net/20.500.12110/paper_08959811_v57_n_p1_Goyanes |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Argentina Glacial landforms Last Glaciation Push moraines Santa Cruz river Southern Patagonia drumlin glacial landform glaciotectonics ice sheet last glaciation overturn Pleistocene push moraine thrust Argentina Patagonia Santa Cruz River [Santa Cruz] Santa Cruz [Argentina] |
| spellingShingle |
Argentina Glacial landforms Last Glaciation Push moraines Santa Cruz river Southern Patagonia drumlin glacial landform glaciotectonics ice sheet last glaciation overturn Pleistocene push moraine thrust Argentina Patagonia Santa Cruz River [Santa Cruz] Santa Cruz [Argentina] Goyanes, Gabriel Alejandro Massabie, Armando Carlos Push moraines in the upper valley of Santa Cruz river, southwest Argentina. Structural analysis and relationship with Late Pleistocene paleoclimate |
| topic_facet |
Argentina Glacial landforms Last Glaciation Push moraines Santa Cruz river Southern Patagonia drumlin glacial landform glaciotectonics ice sheet last glaciation overturn Pleistocene push moraine thrust Argentina Patagonia Santa Cruz River [Santa Cruz] Santa Cruz [Argentina] |
| description |
The upper cliff of the Santa Cruz River was used to assess the proglacial environments of the Argentino Glacier outlet of Late Pleistocene age. These cliffs show glaciolacustrine, fluvioglacial and till deposits, where only the first one are deformed. Glacial landforms in the area and these structures suggest that the ice mass advanced, topographically controlled, towards the east from the Patagonian Ice Sheet pushing up the proglacial sediments.The spatial arrangement of thrusts and overturned folds, the drumlins-flutes moraine directions and the end moraines shape, allow inferring the dynamic and the Argentino glacier profile. Detailed analyses of the glaciotectonic structures indicate that these have two origins: load in the north with stress transfer to the southeast, and push from the west. Through the analysis of deformed sediments, their thickness and their sedimentary and structural features, three zones of deformations were recognized. Each of these zones was associated to glacial advances because of changes of the regional climate conditions. © 2014 Elsevier Ltd. |
| author |
Goyanes, Gabriel Alejandro Massabie, Armando Carlos |
| author_facet |
Goyanes, Gabriel Alejandro Massabie, Armando Carlos |
| author_sort |
Goyanes, Gabriel Alejandro |
| title |
Push moraines in the upper valley of Santa Cruz river, southwest Argentina. Structural analysis and relationship with Late Pleistocene paleoclimate |
| title_short |
Push moraines in the upper valley of Santa Cruz river, southwest Argentina. Structural analysis and relationship with Late Pleistocene paleoclimate |
| title_full |
Push moraines in the upper valley of Santa Cruz river, southwest Argentina. Structural analysis and relationship with Late Pleistocene paleoclimate |
| title_fullStr |
Push moraines in the upper valley of Santa Cruz river, southwest Argentina. Structural analysis and relationship with Late Pleistocene paleoclimate |
| title_full_unstemmed |
Push moraines in the upper valley of Santa Cruz river, southwest Argentina. Structural analysis and relationship with Late Pleistocene paleoclimate |
| title_sort |
push moraines in the upper valley of santa cruz river, southwest argentina. structural analysis and relationship with late pleistocene paleoclimate |
| publishDate |
2015 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08959811_v57_n_p1_Goyanes http://hdl.handle.net/20.500.12110/paper_08959811_v57_n_p1_Goyanes |
| work_keys_str_mv |
AT goyanesgabrielalejandro pushmorainesintheuppervalleyofsantacruzriversouthwestargentinastructuralanalysisandrelationshipwithlatepleistocenepaleoclimate AT massabiearmandocarlos pushmorainesintheuppervalleyofsantacruzriversouthwestargentinastructuralanalysisandrelationshipwithlatepleistocenepaleoclimate |
| _version_ |
1768546074201423872 |