Figures & data
Figure 1. (a) Location of the Anecón Grande study area within the geographic context of Río Negro Province of Argentina and (b) Sketch map of Río Negro Province depicting locations cited in the text.
Figure 2. Anecón Grande hill is an eroded strato-volcano, mainly composed of intermediate Tertiary volcanic and pyroclastic rocks. The Somuncura Plateau is represented here by one of its youngest basaltic lava flows, which passes through the paleo-valley of Comallo Creek.
Figure 3. Scanned image of the original handmade geologic map of the Anecón Grande area. Since references were not included on the original map, a legend has been added. The map is shown unaltered from the original paper version.
Figure 4. The hamlet Clemente Onelli is located in the foothills of the flat landform named ‘Escorial de Cari-Laufquen’, which is composed of a thick pile of basaltic lava flows from Somuncura Plateau. This volcanic landform with steppe vegetation is typical for the extra-Andean Patagonian landscape.
