Darwin at Puente del Inca: Observations on the formation of the Inca's bridge and mountain building
The analyses of the observations of Charles Darwin at Puente del Inca, during his second journey across the High Andes drew attention on two different aspects of the geological characteristics of this classic area. Most of his descriptions on the characteristics and the origin of the natural bridge...
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paper:paper_00044822_v64_n1_p170_Ramos2023-06-08T14:26:12Z Darwin at Puente del Inca: Observations on the formation of the Inca's bridge and mountain building Ramos, Victor Alberto Andes Ice-bridge Lateral growth Mountain uplift Subsidence Volcanism biostratigraphy debris avalanche fold and thrust belt fossil mollusc snow structural geology subsidence uplift volcanism Mollusca The analyses of the observations of Charles Darwin at Puente del Inca, during his second journey across the High Andes drew attention on two different aspects of the geological characteristics of this classic area. Most of his descriptions on the characteristics and the origin of the natural bridge were not published, mainly due to his poor impression of Puente del Inca. However, the application of the uniformitarian principles shows that it was formed as an ice bridge associated with snow and debris avalanches later on cemented by the minerals precipitated by the adjacent hot-water springs. Darwin's observations on the complex structural section at Puente del Inca, together with his findings of shallow water marine fossil mollusks in the thick stratigraphic column of the area interfingered with volcanic rocks, led him to speculate on several geological processes. Based on his geological observations, Darwin argued on the mountain uplift, the subsidence of the marine bottom, the episodic lateral growth of the cordillera, and their association with earthquakes and volcanic activity, which was an important advance in the uniformitarian hypothesis of mountain uplift proposed by Charles Lyell. Darwin was able to recognize the episodic nature of mountain uplift, and based on these premises he concluded that the Andes were still undergoing uplift. Taken as a whole, his ideas anticipated in many years some of the premises of the geosynclinal theory, and current hypothesis on foreland migration of the fold and thrust belts. 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_p170_Ramos http://hdl.handle.net/20.500.12110/paper_00044822_v64_n1_p170_Ramos |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Andes Ice-bridge Lateral growth Mountain uplift Subsidence Volcanism biostratigraphy debris avalanche fold and thrust belt fossil mollusc snow structural geology subsidence uplift volcanism Mollusca |
| spellingShingle |
Andes Ice-bridge Lateral growth Mountain uplift Subsidence Volcanism biostratigraphy debris avalanche fold and thrust belt fossil mollusc snow structural geology subsidence uplift volcanism Mollusca Ramos, Victor Alberto Darwin at Puente del Inca: Observations on the formation of the Inca's bridge and mountain building |
| topic_facet |
Andes Ice-bridge Lateral growth Mountain uplift Subsidence Volcanism biostratigraphy debris avalanche fold and thrust belt fossil mollusc snow structural geology subsidence uplift volcanism Mollusca |
| description |
The analyses of the observations of Charles Darwin at Puente del Inca, during his second journey across the High Andes drew attention on two different aspects of the geological characteristics of this classic area. Most of his descriptions on the characteristics and the origin of the natural bridge were not published, mainly due to his poor impression of Puente del Inca. However, the application of the uniformitarian principles shows that it was formed as an ice bridge associated with snow and debris avalanches later on cemented by the minerals precipitated by the adjacent hot-water springs. Darwin's observations on the complex structural section at Puente del Inca, together with his findings of shallow water marine fossil mollusks in the thick stratigraphic column of the area interfingered with volcanic rocks, led him to speculate on several geological processes. Based on his geological observations, Darwin argued on the mountain uplift, the subsidence of the marine bottom, the episodic lateral growth of the cordillera, and their association with earthquakes and volcanic activity, which was an important advance in the uniformitarian hypothesis of mountain uplift proposed by Charles Lyell. Darwin was able to recognize the episodic nature of mountain uplift, and based on these premises he concluded that the Andes were still undergoing uplift. Taken as a whole, his ideas anticipated in many years some of the premises of the geosynclinal theory, and current hypothesis on foreland migration of the fold and thrust belts. |
| author |
Ramos, Victor Alberto |
| author_facet |
Ramos, Victor Alberto |
| author_sort |
Ramos, Victor Alberto |
| title |
Darwin at Puente del Inca: Observations on the formation of the Inca's bridge and mountain building |
| title_short |
Darwin at Puente del Inca: Observations on the formation of the Inca's bridge and mountain building |
| title_full |
Darwin at Puente del Inca: Observations on the formation of the Inca's bridge and mountain building |
| title_fullStr |
Darwin at Puente del Inca: Observations on the formation of the Inca's bridge and mountain building |
| title_full_unstemmed |
Darwin at Puente del Inca: Observations on the formation of the Inca's bridge and mountain building |
| title_sort |
darwin at puente del inca: observations on the formation of the inca's bridge and mountain building |
| publishDate |
2009 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v64_n1_p170_Ramos http://hdl.handle.net/20.500.12110/paper_00044822_v64_n1_p170_Ramos |
| work_keys_str_mv |
AT ramosvictoralberto darwinatpuentedelincaobservationsontheformationoftheincasbridgeandmountainbuilding |
| _version_ |
1768541682113970176 |