Index map
Florida is one of the many add-on appendages to eastern North America. Evidence of its overseas origin lies hidden beneath a cover of Tertiary and Quaternary sediments. The underlying rocks, unrepresented on this map but known from cores brought to the surface from drill holes, are an upper-Precambrian to lower-Paleozoic piece of western Africa that was added to the continent during formation of Pangaea and left behind in early Mesozoic time, when Pangaea broke up and created the Atlantic Ocean. |
