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Missing the point: re-evaluating the earliest lithic technology in the Middle Orinoco.

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Summary

New research at the Culebra site reveals its stone tools date to the late Holocene, not the early Holocene as previously thought. This challenges assumptions about Archaic hunter-gatherer adaptations in the Orinoco valley.

Keywords:
AMS datingOrinocoearly Holocenelithic technologypreceramicsediment

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Area of Science:

  • Archaeology
  • South American Prehistory
  • Lithic Analysis

Background:

  • The Culebra site in the Orinoco valley was previously believed to be an early Holocene open-air occupation.
  • Existing research suggested a stone tool assemblage reflecting Archaic hunter-gatherer adaptations.

Purpose of the Study:

  • To re-evaluate the chronology of the Culebra site through detailed lithic analysis.
  • To accurately characterize the stone technology and its depositional context.
  • To reassess the assumed cultural affiliation of the lithic assemblage.

Main Methods:

  • Renewed excavations and detailed characterization of the stone tool assemblage.
  • Quantitative and qualitative analyses of lithic artifacts.
  • Direct dating of sediment organic matter using stable isotopes.
  • Stratigraphic and pedological analyses.

Main Results:

  • Direct dating and stratigraphic data indicate a late Holocene depositional context, contradicting early Holocene estimates.
  • The identified stone toolkit does not align with previous assumptions of Archaic hunter-gatherer technology.
  • The site's occupation post-dates the established appearance of ceramics in the region.

Conclusions:

  • The Culebra site's lithic assemblage represents a later period than previously assumed, requiring a re-evaluation of regional prehistory.
  • Further research is needed to understand the evolution of stone tool technologies in relation to environmental changes in lowland South America.