Biface bevel flaking is a lithic resharpening technique in which flakes are removed from the edge of a biface in a consistent, angled direction, producing a beveled or twisted blade edge. It is a diagnostic feature of certain projectile point traditions, especially in North America.
🌍 Definition
- Biface Bevel Flaking: The process of creating an oblique, slanted edge on a bifacial tool by systematically removing flakes from alternating faces.
- Resulting Morphology:
- Edge appears skewed or twisted.
- Cross-section shows asymmetry, with one face flaked more steeply than the other.
- Contrast: Different from simple bifacial sharpening, which maintains a straight edge; bevel flaking intentionally alters the edge angle.
🔑 Archaeological Contexts
- Dalton Points (Late Paleoindian/Early Archaic, Southeastern U.S.):
- Classic examples of biface bevel flaking.
- Edges were resharpened repeatedly in one direction, producing twisted blades.
- Resharpening Strategy:
- Extends tool life by maintaining sharpness.
- Creates distinctive beveling scars diagnostic of cultural tradition.
- Functional Role:
- Beveled edges may have improved cutting efficiency.
- Twisted morphology could aid in penetration or durability of projectile points.
📚 Importance in Anthropology
- Technological Insight: Shows intentional design choices in tool maintenance and edge modification.
- Cultural Identity: Bevel flaking patterns are tied to specific archaeological cultures (e.g., Dalton tradition).
- Comparative Value: Highlights differences between beveling, serration, and straight-edge resharpening.
- Material Culture: Reflects both functional adaptation and stylistic identity in lithic craftsmanship.
In short: Biface bevel flaking is the resharpening technique that produces angled, twisted edges on bifaces, especially seen in Dalton points, serving both functional and cultural roles.