Post Mold Features: Searching for Comprehensive Patterns

 

Dr. David Butler

 

Test Unit 3 (2X2 meter block unit) reveled at least two patterns associated with post mold features. One such pattern was an arc extending toward the North (likely associated with an oval structure).  This discovery justified opening an adjoining unit to the north (Test Unit 4) to investigate whether this pattern continued.  Consequently, over thirty post molds have been discovered in Test Unit 4 and are currently being processed. This many posts in this small area clearly indicates multiple building episodes with overlapping foundation posts.  As time passed and new structures replaced old ones, new foundation posts were established and post mold features at the Blueberry site (8HG678) demonstrate that the village site was prime prehistoric real estate. 

Newly discovered post mold features in TU 4 have been mapped and photographed and are currently being sampled and removed.  As this analysis in Test Unit 4 is completed, the overall relationship between the distribution of posts in these two units across this 4X4 meter space will be evaluated.  The second pattern observed in Test Unit 3 was an east-west line of posts. In September 2007 Test Unit 5 (a 2x2 meter western adjoining block unit) was initiated to investigate this East-West line of posts to discover if it continued outside TU3. 

Test Units 4 and 5 have been strategically placed to investigate post mold patterns observed in Test Unit 3. Thus far, Test Unit 4 has produced consistent results with Test Unit 3 (initial elevation, soil color and texture, and diameter of post mold features). Test Unit 5 is still above the primary midden at the Blueberry Site and has been excavated to a depth of 15 centimeters below ground surface. More data recovery is needed to discern the presence of post mold features in Test Unit 5 (they appeared at the base of the midden in TU3 and TU4).  The objective of these adjoining units is to find enough evidence to potentially demark the dimensions of a prehistoric structure. A comprehensive explanatory model has not been developed in south-central Florida addressing typical dimensions, associated post mold diameters, depth of post mold features relative to prehistoric living surfaces, and tree specimen utilized.  Therefore, this evidence is critical to understanding habitation patterns associated with south-central Florida pre-historic Indians.