Poster Number 56
See more from this Division: General Discipline Sessions
See more from this Session: Archaeological Geology (Posters)
Abstract:
In an effort to identify how rising Holocene sea level, coupled with pre-historic structures, affected the morphology of Weedon Island, 40 cores were collected across the Weedon Island peninsula. Sedimentological and radiocarbon analyses of the cores identified a transgressive sequence, capped by eolian sands and archaeological middens, showing that the northern part of Tampa Bay had been inundated by seawater prior to ca. 4000 years ago. Several additional cores were recently collected from the nearshore marine environment in Old Tampa Bay adjacent to Weedon Island. The new cores, coupled with an additional radiocarbon age estimate, extend the marine inundation of the northwestern part of Tampa Bay to ca. 5000 years ago. Lithological analysis of the entire suite of cores from Weedon Island shows an apparent relict beach face, highlighting a seemingly gradual, rather than abrupt, flooding of Tampa Bay.
See more from this Division: General Discipline Sessions
See more from this Session: Archaeological Geology (Posters)