Abstract
ABSTRACTA geomorphological cartography of the Cafayate depression (NW Argentina) at a scale of 1:20,000 is presented. The Main Map was made with satellite images from 2009 to 2016 and aerial photographs from various dates. The area was classified into three categories of geomorphological dynamics according the type of fluvio-aeolian interaction. Anastomosing channels and crevasse splays are dominant in the southern section of the Santa María River, while meandering channels develop in the northern section. Extensive dune fields interacting with fluvial deposits have developed in the central sector of the depression. The Main Map also reflects the main human features and can be used as a tool for preparing hazard maps.
Highlights
Geomorphological maps are an excellent tool for the detailed representation of floodplains
There is no geomorphological cartography available for the river and dune field dynamics, some research has been conducted on its Pleistocene (May, 2008; Sampietro Vattuone & Neder, 2011; Sancho, PeñaMonné, Rivelli, Rhodes, & Muñoz, 2008) and Holocene (Peña Monné et al, 2016) deposits and evolution
This paper presents the main geomorphological features and describes the landscape evolution of the Cafayate depression, in the northern sector of the Santa María valley, using a geomorphological map as the key tool
Summary
Geomorphological maps are an excellent tool for the detailed representation of floodplains. These graphical representations of fluvial forms provide a complete image of the various related processes and landforms. Northwest Argentina is a dry environment where two geomorphological agents – water and wind – are the main modelers of the landscape. This paper presents the main geomorphological features and describes the landscape evolution of the Cafayate depression, in the northern sector of the Santa María valley, using a geomorphological map as the key tool. The cartography highlights fluvial and aeolian landforms and their dynamic interactions. This map could be of assistance in the preparation of hazard maps for limiting damage to road structures, populations, and farms
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