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vol.33 issue2ARTIFACT DIVERSITY VS. FUNCTIONAL SPECIALIZATION ANALYSIS OF THE IV COMPONENT OF TÚNEL I (TIERRA DEL FUEGO, ARGENTINA)HUNTER GATHERERS AT THE RÍO GALLEGOS ESTUARY MOUTH, SANTA CRUZ, ARGENTINA author indexsubject indexarticles search
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Magallania (Punta Arenas)

On-line version ISSN 0718-2244

Abstract

FAVIER DUBOIS, CRISTIAN M  and  BORRERO, LUIS A. PROGRADATION OF BEACHES: CHRONOLOGY AND FORMATION PROCESSES OF THE ARCHAEOLOGICAL RECORD IN THE CENTRAL COASTLINE OF SAN SEBASTIAN BAY, TIERRA DEL FUEGO (ARGENTINA). Magallania [online]. 2005, vol.33, n.2, pp.93-108. ISSN 0718-2244.  http://dx.doi.org/10.4067/S0718-22442005000200007.

This paper presents a geoarchaeological analysis of the chronology and formation processes associated with the accumulation of the archaeological record at San Sebastian Bay. Both expectations about the past human use of the area and the analysis of recovered archaeological material are contextualized in relation to previous research about the geomorphic evolution of the bay. The onset of progradation at these beaches, during the middle Holocene, led to the formation of extended supratidal flats, with aligned North-South chenier ridges. By providing maximum ages for the archaeological material from small ephemeral ponds between these ridges, the radiometric ages of the cheniers allow us to formulate a chronology for the appearance of surfaces amenable to human occupation. This chronological framework, together with study of the formation processes of the archaeological record, contextualize the archaeological material found in this region and orients future research strategies.

Keywords : Tierra del Fuego; geoarchaeology; chenier ridges; chronology.

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