Suwannee Limestone is found in the peninsula carbonate outcroppings on the northwestern, northeastern and southwestern flanks of the
Ocala Platform. However, Suwannee Limestone is not present on an area known as
Orange Island on the eastern side of the
Ocala Platform due to erosion, nondeposition or both. This limestone is present in southeastern
Leon,
Jefferson,
Madison,
Taylor,
Lafayette counties as well as
Hamilton along the upper
Suwannee River basin, and southward into
Suwannee County, Florida. Early Oligocene Suwannee Limestone was recognized in the northwestern peninsula by P. F. Huddleston in 1993 as a triple subdivision of Suwannee Limestone,
Ellaville Limestone, and Suwannacoochee Dolostone. The Suwannacoochee Dolostone was later officially renamed as the
Suwannacoochee Dolomite.
Sedimentology Suwannee Limestone consists of a white to cream, poorly to well hardened, fossil rich, vuggy to moldic
grainstone and
packstone. The
dolomitized parts of the Suwannee Limestone are gray, tan, light brown to moderate brown, moderately to well indurated (hard), finely to coarsely
crystalline,
dolomite with limited occurrences of fossil-bearing beds. Limestone in
silicate form is common in Suwannee Limestone.
Stratigraphy The Suwannee Limestone overlies the
Ocala Limestone and forms part of the intermediate confining unit/aquifer system. (USGS) == Paleobiota ==