Analysis of chip stone debris sample RL 7
Sample RL-7 consisted of a total of fifty-seven pieces of lithic debitage larger that 1cm, that were separated from debitage smaller than 1cm. ... All debitage in RL-7 was produced from a single cobble of obsidian, and was produced at the same time and from one reduction method of soft hammer for most of the A1 pieces. ... Categories The categories for this analysis are: class, type of flake, portion, platform type, cortex percent, cortex type, platform cortex, bulbar scar types, lip presence, termination types, dorsal scars, size, and weight. ... Termination Count Percentage Normal 28 52% Feather 5 9% Hinge 14 25% Snap 4 7% Step 3 5% Outré Passé 1 2% Tertiary flakes made up the highest percentage of A-1. Flake Types Count Percentage Primary Decordication 10 18% Secondary Decordication 16 28% Tertiary 27 47% Shatter 4 7% Platform Cortex Platform Cortex Percentage Present 21% Not present 79% The A-1 debitage had the following Platform types: Platform Types Count Percentage Flat 5 9% Crushed 13 21% Flaked Off 4 7% Ground 1 2% Concave, Flaked 8 14% None 15 27% Ridged (one ridge) 1 2% Indeterminate 5 9% Angled (natural ridge) 1 2% Faceted 4 7% The majority of the A-1 flakes were complete.