A geomorphological map of the Quebrada de Purmamarca, Jujuy, NW Argentina

Abstract

Please click here to download the map associated with this article. Geomorphological maps summarize a huge quantity of geomorphological information within a spatial context and are thereby a valuable framework for the interpretation of Quaternary landscape evolution at any location. Geomorphological mapping in the Quebrada de Purmamarca (Eastern Cordillera, NW Argentina) integrates information gained from topographical maps, remote sensing imagery and field work. The resulting map provides insights into a dynamic landscape evolution, and documents the interplay between tectonic and climatic controls at various temporal and spatial scales. Several remnants of planation surfaces are interpreted as the products of the long-term uplift and segmentation due to thrusting since the Tertiary. Three terrace levels were mapped and reect complex regional scale cycles of erosion and deposition, possibly in relation to climatically intensi-ed periglacial activity during most of the Quaternary. Finally, the association of smaller scale landforms such as landslides, alluvial fans and colluvial slopes in the study area points to rapid incision followed by several minor climatic fluctuations in Late Quaternary and Holocene times. In conclusion, the presented map serves as a valuable tool for Quaternary research, and provides the base for further analyses of the mapped forms and processes.