Geomorphology of the SW flank of the Doña Juana Volcanic Complex, Colombia

interplay of fluvial, denudational, structural, and volcanic processes

Journal article (2022)

Authors

Susana Salazar Universidad Nacional de Colombia
Ricardo Camacho University of Melbourne
Santiago Villota Universidad Nacional de Colombia
Natalia Pardo Universidad de los Andes
Andrés Velásquez Universidad Nacional de Colombia
M.A. Cabrera Universidad de los Andes
Bernardo Pulgarín Servicio Geológico Colombiano
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Published Date

2022

Language

English

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Abstract

In the SW flank of the Doña Juana Volcanic Complex, Colombia, the dynamic geomorphic system responds to the complex interaction between volcanic, climatic, and tectonic driving forces, where the recent landscape (last ~20 years) is being shaped as a function of denudational processes. Despite the rapid rates of landforms development, the geomorphology of this area is poorly documented. To overcome the lack of information we mapped the area using a GeoSAR DEM and an Unmanned Aerial Vehicle based DEM. This paper presents two maps, a 1:25,000 scale map and a 1:5,000 detailed map of landforms along the Humadal Creek. Detailed categorization of landforms (at 1:5,000) allowed us to identify geomorphic processes in the village of Las Mesas and rural areas that triggered hazards for the communities. The morphologic evolution interpretation of this volcanic tropical area serves as a tool for future geohazard assessment in inhabited areas with important information gaps.