Susquehanna

Point Type:  Susquehanna                 
Associated Date: 3900 - 2700 B.P.
Morphology:  Corner Notched

Length Point:        
Ave: [ 54 +/- 21 mm]  
Range: [ 33 to 100 mm] 
Example: [ 44 mm]

Width Point:         
Ave: [ 31 +/-  7 mm]  
Range: [ 18 to 50 mm] 
Example: [ 27 mm]

Point Ratio (Width / Length):  
Ave: [.61 +/- .11 ]

Length of Base:      
 (Shoulder to Base)
Ave: [ 15 +/-  4 mm]  
Range: [ 10 to 20 mm] 
Example: [ 12 mm]

Width of Base:       
 (Maximum)
Ave: [ 22 +/-  3 mm]  
Range: [ 13 to 26 mm] 
Example: [ 21 mm]

Depth of Notch:      
Ave: [3.9 +/- .09  mm] 

Base Length/Point Ratio:  
 (Length of Base  / Length Point)
Ave: [.29 +/- .05 ]

Base Width/Point Ratio:          
 (Width of Base  / Width Point)
Ave: [.73 +/- .12 ]
 
Base Ratio:        Ave: [.68 +/- .14 ] 		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: [.13 +/- .02 ]
 (Depth Notch 
   / Width Point)

Blade Ratio:       Ave: [1.2 +/-  .3 ] 		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: [ .8 +/- .7 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: [90 +/- 32 o]
 (Angle of Shoulder from   
 Notch Center to Shoulder to Tip)

1993 - Tara Prindle