Outline is Representative of Size and Shape:

Name Details:
Identified By:  James Cambron (both forms)
Named For:  Big Sandy Variant
Date Identified:  1975
Type Site: 
Point Validity: Valid type

Cambron is a distinguished avocational archaeologist that did extensive work in Alabama and the Tennessee River valley. Most references are to the Big Sandy Contracting Base with very few referring to the Auricle Base form.  The characteristics of this form also overlap with he Jakie Shelter point which complicates identification of this point.  Because there is professional acceptance of this type, this type is considered a valid type.


Big Sandy Contracting Base
AKA: Big Sandy Auriculate Base
Cluster: Large Side Notch Cluster
Description of Physical Characteristics and Flaking Pattern:
This is a medium to large bifurcated point with an elliptical cross section.  The blade is excurvate with parallel notches that range from horizontal to upward angle.  The stem is expanding and may have an auricle appearance.  The base is deeply concave to bifurcated and have basal grinding.  The most common flaking pattern is random, but rare examples have had parallel transverse flaking.
Size Measurements:
Length - 35 to 45 mm (39 mm average), Stem Length - 10 to 13 mm (11 mm average),  Blade Width - 16 to 26 mm (22 mm average), Neck Width - 10 to 17 mm (14 mm average), Stem Width-18 to 23 mm (21 mm average), Thickness - 6 to 9 mm, Basal Concavity - 1 to 3 mm.
Commonly Utilized Material:
Additional Comments:

Many have differentiated between the auricle form and the constricted form.  The auricle form has rounder ears (picture 2) while the contracting base has wider flatter ears and is more bifurcated (picture 1).
Distribution:
Distribution Comments:

These points are most abundant in the Tennessee River valley and has the second highest frequency in the Ohio River Valley.  They are less common in the other highlighted areas.
Age / Periods:
Date: 10,000 - 8,000,B.P.
Cultural Period: Early Archaic
Glacial Period: Early Holocene
Culture:
Age Details:
This point is part of the Big Sandy Phase.
Similar Points:
Black SandBolen,  Cache RiverEnsorFairlandFrio Godar,  Graham CaveHemphillHickory Ridge KessellMacCorkleNewton FallsOsceolaRaddatz,  RowanSavage Cave,  St. CharlesTaylor Side Notch
Other points in this cluster / Related / Associated Points:
Big SandyBig Sandy Broad Base Big Sandy Leighton BaseBig Sandy E-Notch, Cache River   GodarGraham CaveGreenbrierHemphillHoward CountyMadison Side NotchedOsceola Osceola GreenbrierRaddatzSimonsen
Pictures: 

Pictures Provided By
Big Sandy Contracting Base Projectile Point, Big Sandy Contracting Base Arrowhead
Big Sandy Auriculate Projectile Point, Big Sandy Auriculate Arrowhead
:

Hayden Hamlin
Jeremy Pope
Chuck Pounds
Mike's Tennessee Arrowheads
Jim McNertney
Windy City Artifacts
Ken's Relics

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References: (See Reference Page, Entry Number):

10, 12, 17, 23, 30, W2, W11