Black obsidian from Pampa del Asador (Santa Cruz, Patagonia Argentina): a regional source.

CASSIODORO, GISELA; GOÑI, RAFAEL; ESPINOSA, SILVANA; AGNOLIN, AGUSTIN; FLORES CONI, JOSEFINA

Buenos Aires

Simposio; 11th International Symposium on Knappable Materials "From Toolstone to Stone Tools"; 2017

IMHICIHU CONICET

Session 4: Global Perspectives on Obsidian Provenance and Hydration Dating Organizers: Michael D. Glascock, Brandi L. MacDonald, and Valeria CortegosoOral presentationBlack obsidian from Pampa del Asador (Santa Cruz, Patagonia Argentina): a regional source.Cassiodoro Gisela, Goñi Rafael, Espinosa Silvana, Agnolin Agustín and Flores Coni JosefinaLithic artifacts manufactured in black obsidian from Pampa del Asador have a high spatial distribution in Central Patagonia. Different geochemical analyzes have determined its use from Magellan?s Strait to Chubut province (Stern 2004).First research works at Pampa del Asador had determined the general characteristics of the source (Espinosa and Goñi 1999). Subsequently, the distribution of smaller pebbles to the east (Belardi et al. 2006) and southeast of the area (Franco et al. 2017) was established.Also, the distribution of this lithic resource had been addressed to discuss mobility and circulation of human groups in Patagonia (Espinosa and Molinari 1999, Civalero 1999, Re et al. 2014, Fernández et al. 2014, among others). The aim of this presentation is to display new information about the distribution, density and size of obsidian pebbles at Pampa del Asador. New outcrops are detailed and linked to regional archaeological information to focus the discussion of procurement area concept and the role of Pampa del Asador in hunter-gatherers mobility.