Point Type: Beekman
Associated Date: 4400 - 4200 B.P.
Morphology: Triangular / Lanceolate
Length Point:
Ave: [ 25 +/- 7 mm]
Range: [ 20 to 40 mm]
Example: [ 26 mm]
Width Point:
Ave: [ 20 +/- 4 mm]
Range: [ 16 to 36 mm]
Example: [ 21 mm]
Point Ratio:
(Point Width
/ Point Length)
Ave: [.80 +/- .2 ]
Base Concavity:
Ave: [ - .5 +/- .5 mm]
Distal Base Form: 1. Convex ( >= 1 mm)
2. Straight (< 1 mm & > -1 mm)
3. Concave (<= -1 mm)
Lateral Base Form (Subjective): 1. Contracting 2. Parallel 3. Expanding
Other Basal Traits (Subjective): 1. None 2. Ears 3. Flutes
Base Ratio: Ave: [.04 +/- .02 ]
(Concavity
/ Length Point)
Blade Ratio: Ave: [1.3 +/- .5 ] 1. Lanceolate (>= 2.0 mm)
(Length Point 2. Isosceles (< 2.0 & > 1.2 mm)
/ Width Point) 3. Equilateral (<= 1.2 mm)
Blade Curvature: Ave: [1.9 +/- .5 mm] 1. Very Convex (>= 5 mm)
(Cord height of curve 2. Convex (< 5 mm & >= 2 mm)
from corner of Base to Tip) 3. Straight (< 2 mm & > -2 mm)
4. Concave (<= -2 mm)
5. Mixed (< 2 mm & > 2 mm)
Base Angle: Ave: [ 64 +/- 10 o]
(Angle of Base from
Center of Base to Corner of Base to Tip)
© 1993 -
Tara Prindle