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Updated: Jul 12, 2026
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Primer Extension Capture: Targeted Sequence Retrieval from Heavily Degraded DNA Sources
Published on: September 3, 2009
Preceramic sequences in the el abra rock-shelters, Colombia
Science (New York, N.Y.)
|March 10, 1972
Summary
Crude stone artifacts found in Colombia
Area of Science:
- Archaeology
- Paleo-Indian studies
Background:
- Excavations at El Abra rock-shelters in Colombia have revealed a distinct set of stone tools.
- These artifacts are characterized by trimming on a single face of chert flakes or nodules.
Purpose of the Study:
- To analyze and characterize the stone artifacts from El Abra.
- To determine if these tools represent a previously undescribed cultural complex.
Main Methods:
- Excavation of stone artifacts from El Abra rock-shelters.
- Analysis of artifact morphology, focusing on trimming techniques and working edges.
Main Results:
- A series of crude stone tools were excavated.
- The tools exhibit specific trimming on a single face of chert flakes or nodules.
- These characteristics distinguish them from other known Paleo-Indian toolkits.
Conclusions:
- The excavated tools represent a distinct cultural complex.
- This finding contributes to the understanding of Paleo-Indian cultures in South America.
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