Radiocarbon data of the Middle Holocene

Radiocarbon data of the Middle Holocene is derived from different site types: open-air sites (all of them shell middens; n = 5), with high and low densities, and rock shelters (n = 6, but from 2 sites). Evidence of exploitation of marine resources was recorded in shell middens ( Zubimendi et?al., 2005, Castro et?al., 2007 and Castro et?al., 2011), and also in Alero El Oriental. In this SBI-0206965 last case, mollusc shells and bones of pinnipeds were identified in low densities (Ambrústolo et al., 2011). This would suggest that during the Middle Holocene, the coast and its resources (mainly molluscs) have been exploited by hunter–gatherers who occupied the area.
There is no evidence of previous human occupation to smooth muscle time, although according to various studies, during the Pleistocene–Holocene transition and prior to the mid-Holocene transgressive maximum at ca. 8000 cal BP, the Atlantic coast would have been several kilometres eastward from its current position (Codignotto et?al., 1992, Schellmann and Radtke, 2010 and Ponce et?al., 2011). Therefore, the evidence of coastal occupations could be under the sea today, or have been destroyed by erosion of the advancing sea (Bailey and Milner, 2002 and Favier Dubois, 2013).