Fig 1.
Location of Mound Key and Pineland site complexes in Southwest Florida, USA.
Base map image downloaded from http://www.naturalearthdata.com/.
Fig 2.
LiDAR digital elevation model of Mound Key showing the site’s prominent features.
The LiDAR data were processed in ArcMap 10.2 with the LAS toolset in the program using the NAD 1983 and NAV 1988 horizontal and vertical datum respectively. All LiDAR used in the current analysis is publically available via the National Oceanic Atmospheric Association website (http://coast.noaa.gov/digitalcoast/) [15] (LAS points 202,364 over 638,841 square meters).
Fig 3.
Location of cores and excavation units described in the text in the vicinity of Mound 1 and Mound 2.
The elevation scale (in meters) for this image is the same as the one used in Fig 2.
Fig 4.
Cores 1, 13, 15, and 16 and their associated AMS dates from Mound Key.
Cores are labeled in stratigraphic order from surface to bottom sequentially with NR meaning no recovery due to compaction. Only shell percentages are shown in the figure (e.g., if 40% shell is shown in figure the remaining 60% would represent other). All dates are reported as their modeled values.
Fig 5.
Cores 25, 26, and 27 and their associated AMS dates from Mound Key.
Cores are labeled in stratigraphic order from surface to bottom sequentially with NR meaning no recovery due to compaction. Only shell percentages are shown in the figure (e.g., if 40% shell is shown in figure the remaining 60% would represent other). All dates are reported as their modeled values.
Fig 6.
Excavation of M-1 on Mound 2 showing the clear post features in the process of excavation.
Fig 7.
Probability distributions of Bayesian modeled dates from post molds from the tops of Mound 1 and Mound 2.
All corresponding provenience information for each date can be found in S1 Table.
Fig 8.
Summed probability of all modeled dates from Mound Key showing the possible gap in occupation.
All corresponding provenience information for each date can be found in S1 Table.
Fig 9.
3D digital elevation model (x1.5 vertical exaggeration) of Mound Key LiDAR showing the topography of Mound 1 and its relationship to the canal and Mound 2 and Mound 3.