Long Bay

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