Geodiversidad en el corredor “Atlántico-Cordillera”, Chubut (Argentina). Una aproximación desde la geomorfología
Geodiversity in the “Atlántico-Cordillera” corridor, Chubut (Argentina). An approach from the geomorphology
Bernardo Wengier1,2,*, Óscar Martínez1, Soledad Schwarz3, Christian Fernando Colman4
1 Facultad de Ciencias Naturales y Ciencias de la Salud, Universidad Nacional de la Patagonia, San Juan Bosco. Ruta 259, km 16.5, (U9200) Esquel, Chubut, Argentina.
2 Centro de Investigación Esquel de Montaña y Estepa Patagónica (CIEMEP), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional de la Patagonia San Juan Bosco. Roca 780, (U9200) Esquel, Chubut, Argentina.
3 Instituto de Desarrollo Económico e Innovación, Universidad Nacional de Tierra del Fuego, Antártida e Islas del Atlántico Sur. Yrigoyen 879, (9410) Ushuaia, Tierra del Fuego, Argentina.
4 Departamento de Geología, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Asunción. Km 11, (1039-1804) San Lorenzo, Paraguay.
* Autor para correspondencia: (B. Wengier) This email address is being protected from spambots. You need JavaScript enabled to view it.
How to cite this article:
Wengier, B., Martínez, O., Schwarz, S., Colman, C.F., 2025, Geodiversidad en el corredor “Atlántico-Cordillera”, Chubut (Argentina). Una aproximación desde la geomorfología: Boletín de la Sociedad Geológica Mexicana, 77(3), A050626. http://dx.doi.org/10.18268/BSGM2025v77n3a050625
Manuscript received: February 16, 2025. Corrected manuscript received: April 10, 2025. Manuscript accepted: May 30, 2025.
ABSTRACT
The geomorphology of a latitudinal strip of approximately 600 km between the Atlantic Ocean and the Andes Cordillera, in the province of Chubut (Argentina), is represented cartographically using ten types of landscape units. These units synthesize the different morphogenetic contexts of the region, past and present. This cartography was developed from official cartographic sources at scales of 1:250,000 (1 map) and 1:1,000,000 (4 maps) and homogenized through the use of GIS to later integrate them into a general map at 1:2,500,000 scale. On the one hand, its geodiversity was quantified by determining the abundance, frequency, and distribution of the main geomorphological units, and on the other, representative sites of these units were proposed. This approach has allowed us to verify that the geomorphological variability, in an east-west direction, coherently reflects the temporal-spatial evolution of the terrains comprising the study area between the Jurassic and the Quaternary. Geodiversity studies represent a novel approach that reveal aspects of the abiotic environment often overlooked or underestimated by classical geomorphology. This seems to be confirmed in the present work, which should be considered basic and exploratory in nature.
Keywords: geomorphological diversity, landscape units, morphogenetic evolution, Patagonia.