Quartzite pebble technology in the final Middle Pleistocene of the Ribeira da Ponte da Pedra site (High Ribatejo, Central Portugal)

  • Sara Cura Earth and Memory Institute
  • Stefano Grimaldi Geosciences Center Unit
  • Pedro Cura Earth and Memory Institute
  • Pierluigi Rosina Geosciences Center Unit
Keywords: Middle Pleistocene; lithic technology; raw materials; quartzite pebbles; edge modifications; Experimental archaeology; Ribeira da Ponte da Pedra

Abstract


The lithic assemblage of Ribeira da Ponte da Pedra site (OIS8-9) was produced, almost exclusively, through the exploitation of good quality quartzite fluvial pebbles with a regular morphology. Quartzite fluvial pebbles are the most common raw material found in the Middle Pleistocene occupation sites in Portugal. Such feature results from the easy availability of these pebbles in the valleys where the great majority of the archaeological sites within this chronology are located, and also because of the quartzite’s physical properties and suitability for knapping.

In a techno-typological point of view, its lithic assemblage is characterized by the application of two main reduction sequences that result in abundant worked pebbles, retouched pebbles, cortical and semi-cortical flakes, retouched flakes, a few cores and rare bifacial artefacts. Some artefacts present irregular and variable edge modifications described as ‘atypical’ edge modifications that could edge damage resultant from their utilization. From a strictly technical point of view the assemblage can be described as quite simple, however we can envisage an inherent complexity starting in an accurate selection and exploitation of the quartzite pebbles, whose regular morphology allows a ‘predetermined’ production of regular blanks through simple actions.

In order to better understand patterns of raw material selection and technical schemes adopted in the exploitation of the quartzite pebbles we compared a sample of pebbles collected in the same deposits identified in the site (t4 fluvial terrace deposits) with worked pebbles that have 1 or 2 removals that had not altered significantly the original morpho-volumetry of the pebbles. The goal of this comparison was to verify if there was a selection of the fluvial pebbles based on texture and morpho-volumetry and if so, relate such selection with the technical schemes identified by technological study of the assemblage.

Author Biographies

Sara Cura, Earth and Memory Institute

Earth and Memory Institute, Largo Infante D.Henrique 6120 -450, Mação, Portugal

Stefano Grimaldi, Geosciences Center Unit

Quaternary and Prehistory Group of Geosciences Center Unit (uID73 - FCT) Largo Infante D.Henrique 6120 -450, Mação, Portugal

Pedro Cura, Earth and Memory Institute

Earth and Memory Institute, Largo Infante D.Henrique 6120 -450, Mação, Portugal

Pierluigi Rosina, Geosciences Center Unit

Quaternary and Prehistory Group of Geosciences Center Unit (uID73 - FCT) Largo Infante D.Henrique 6120 -450, Mação, Portugal

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Published
15-Mar-2017
How to Cite
Cura, S., Grimaldi, S., Cura, P., & Rosina, P. (2017). Quartzite pebble technology in the final Middle Pleistocene of the Ribeira da Ponte da Pedra site (High Ribatejo, Central Portugal). Journal of Lithic Studies, 4(1). https://doi.org/10.2218/jls.v4i1.2516
Section
Session "Beyond the reduction sequence: new insights in lithic technology"