[1] Mitchell-Tapping also states that a component of the Miami Limestone extends under the Gulf of Mexico north to a point 112 kilometers west of Tampa.
[2] The part of the Miami Limestone forming the Atlantic Coastal Ridge and the lower Florida Keys is an oolitic grainstone which includes fossils of corals, echinoids, mollusks, and algae.
The Key West Oolite is mostly white, includes very little quartz sand, does not harden on exposure to air or water, and its ooids do not have a calcite mosaic around the nucleus.
[4] The fossils in the formation underlying the Everglades, which does not include any ooids, consists primarily of a single bryozoan species, Schizoporella floridana.
Falling sea levels during the Wisconsin glaciation exposed the formation to air and rain, and rainwater percolating through the deposits replaced aragonite with calcite and formed an indurated rock.