Fig. 1: Study area and sampling locations in the southern Titicaca Basin, central Altiplano.
From: Cosmogenic in situ 14C-10Be reveals abrupt Late Holocene soil loss in the Andean Altiplano
a The Belén River draining southwards from the Altiplano’s eastern rim and the locations of our samples; sample 25-4 is from Hippe et al.81. Rock types are generalized according to their Palaeozoic, Mesozoic or Cenozoic age; geologic map modified after refs. 82,83. b Southern Titicaca Basin and central Altiplano (South America top-right inset) showing study area (white square) 15–30 km from the Desaguadero valley; 18 regional catchments with basin-wide erosion rates (grey shading, Supplementary Table 6); and 17 archaeological sites (white diamonds) radiocarbon-dated to the start of Formative Period in the Titicaca Basin44.
