Giambiagi, Laura, Maisa Tunik, Victor A. Ramos, and Estanislao Godoy. 2009. “The High Andean Cordillera of Central Argentina and Chile Along the Piuquenes Pass-Cordon Del Portillo Transect: Darwin’s Pioneering Observations Compared With Modern Geology”. Revista De La Asociación Geológica Argentina 64 (1):43-54. https://revista.geologica.org.ar/raga/article/view/1293.