Point Type: Long Bay
Associated Date: 2000 - 1200 B.P.
Morphology: Side Notched
Length Point:
Ave: [ 30 +/- 4 mm]
Range: [ 22 to 38 mm]
Example: [ 31 mm]
Width Point:
Ave: [18 +/- 2 mm]
Range: [ 14 to 22 mm]
Example: [ 17 mm]
Point Ratio (Width / Length):
Ave: [.60 +/- .04 ]
Length of Base:
(Shoulder to Base)
Ave: [ 10 +/- 2 mm]
Range: [ 6 to 14 mm]
Example: [ 10 mm]
Width of Base:
(Maximum)
Ave: [ 16 +/- 2 mm]
Range: [ 14 to 22 mm]
Example: [ 16 mm]
Depth of Notch:
Ave: [3.4 +/- 1.5 mm]
Base Length/Point Ratio:
(Length of Base / Length Point)
Ave: [.32 +/- .02 ]
Base Width/Point Ratio:
(Width of Base / Width Point)
Ave: [.88 +/- .06 ]
Base Ratio: Ave: [.61 +/- .04 ] 1. Short (<= 0.7)
(Base Length 2. Proportionate (> 0.7 & < 1.3)
/ Base Width) 3. Long (>= 1.3)
Base Form: 1. Convex 2. Straight 3. Concave
(Subjective)
Notch Ratio: Ave: [.19 +/- .07 ]
(Depth Notch
/ Width Point)
Blade Ratio: Ave: [1.1 +/- .09 ] 1. Lanceolate (>= 2.0 mm)
([Length Point 2. Isosceles (< 2.0 & > 1.2 mm)
- Length Base] / Width) 3. Equilateral (<= 1.2 mm)
Blade Curvature: Ave: [2.4 +/- .04 mm] 1. Very Convex (>= 5 mm)
(Cord height of curve 2. Convex (< 5 mm & >= 2 mm)
from Shoulder to Tip) 3. Straight (< 2 mm & >= -2 mm)
4. Concave (< -2 mm)
5. Mixed (< -2 mm & > 2 mm)
Shoulder Angle: Ave: [ 89 +/- 14 o]
(Angle of Shoulder from
Notch Center to Shoulder to Tip)
© 1993 -
Tara Prindle