*Pleistocene: Qad, Apalachicola paleo-cuspate deltaand alluvial plain, finesand and siltwith lensesof gravel and clay;
Qb, Biloxi Fm., beach and dune sand with silty sand, silt and clay representing estuarine facies;
Qd, sand dunes, well sorted fine sand, mostly pale orange;
Qftg, FortThompson Group, clastic and shell deposits associated with the Pamlico (+8 m), Talbot (+13 m), and Penholoway (+19 m) Middle and Early Pleistocene stands of sea level, late Pleist. Princess Ann,
Qpa, (+5 m) and,the Silver Bluff (+2 m) are included; where distinct lithologic units can be differentiated the following are mapped:
Qpa, Princess Ann, beach and dune sand and shell with silty sand, silt and clay representing lagoonal and estuarine facies;
Qa, Anastasia Fm., high energy beach and bar shelly sand with some dune sand, loose coquina to very hard shelly Is., multiple cap rocks;
Qcm, Coffee Mill Hammock Fm., undifferentiated "Chione" shelly sand, Rangia is dominant in the Okeechobee Basin;
Qft, shelly "Chione" sand with multiple very hard sandy Is. cap rocks and laminated caliche crusts;
Qm, Miami Fm., oolite, bioclastic and quartz sand and is., oolite pure only in the Miami rock ridge, soft to medium hard, multiple caliche crusts;
Qk l, Key Largo Ls., porous coral reef Is. with multiple cap rocks, soft to medium hard;
Qkw,Key West Oolite, pure Is. consisting of oolite and bioclastics, soft to hard;
Qc, Caloosahatchee Fm., calcareous shelly sand with diverse extinct tropical marine fauna, may contain multiple very hard sandy cap rocks.
*Plio-Plelstocene: PQp, preglacial Pleistocene lagoonal and prograded unlithified coastal sand, shelly silty gray to greenish gray sand, in C. and S. Florida contains the " Pinecrest" fauna, in N.E. Florida the equivalent sand and clayey sand are deeply weathered, orange and red, some heavy mineral concentrations;
PQr, beach and dune sand deeply weathered, coarse to fine sands with some clay lenses;
PQs, thick soils and residual weathered alluvium, mostly over limestone, red;
PQw, residual and reworked white, pure quartz sand with minor to no heavy minerals;
PQt, "terrace" deposits, surface sand over gray to greenish clayey sand and clay with basal gravel of Is. and chert clasts, highly variable, alluvial loams and gravels in panhandle.
*Pliocene: Pjb, Jackson Bluff Fm., sand, silty sand and shelly silty sand, unlithified, gray, blue, green and black, estuarine facies is a pyritiferous silt;
Pu, undifferentiated sand, in peninsula fine to very fine with humate zones and concentrations of heavy minerals, sand with gravel lenses in W. Florida;
Pt, Tamiami Fm., lower Buckingham Mem.,
PtI, is impure, clayey to sandy marly Is. with phosphorite grains, soft to medium hard, tan to gray, upper Ochopee Mem.,
Pt2 is hard dense Is. to sandy shelly Is., lithified sandy units are moldic, some patch reef rock and intraformational cap rocks with fresh water snails, tan to light gray;
Pbv, Bone Valley Fm., sand and clayey fine sand with montmorillonite clay, concentrations of phosphorite clasts "pebble" and granules "feed", matrix greenish when fresh, typically the overburden is a thick leached zone of sand and aluminous clay, phosphate bearing matrix thins and becomes sporadic southward.
*Miocene: Mc, Citronelle Fm., gravel, sand and micaceous kaolinitic clay, sandy ironstone concretions, gray, orange, red, mottled, thick residual sandy soil, Plio. and Pleist. river terrace deposits are indistinguishable, the oldest portion of the Apalachicola Delta mapped as Mc is probably Plio.;
Mm, Miccosukee Fm., granular sand and clayey sandy with some clay lenses, laminations and crossbedding typical, mottled yellowish, orange and red;
MI, La Belle Fm., replacement for Lower Tamiami Fm., clastic sediments and impure Is., clays not overconsolidated, nonphosphatic to highly phosphatic usually as black pebbles, matrix gray, green and tan interfingering with gravel eastward;
Mj, Jacksonville Ls., sandy to clayey nonphosphatic, soft to very hard Is., moldic where fossil beds are associated with medium to coarse sand;
Mh3, Hawthorne Fm., Statenville type, sand, silty sand and clay with phosphorite pebbles, granules, clast concentrations and replacements, oyster bars corhmon, clays may be siliceous but are typically mixed montmorillonite and palygorskite, greenish fresh clays are over-consolidated with penetrometer readings of 2.5 to 4 tonS/ft.2;
Mh4, Hawthorne Fm., Groveland Park facies, deeply weathered clayey sand and granular sand with beds of kaolinitic clay, where unweathered lower portion is greenish phosphatic sand and sandy clay;
Mh5, Hawthorne Fm., Interlachen facies, quartz sand and quartzite gravel with basal kaolinitic sandy clay beds, oblate spheroid "beach" pebbles common to abundant, white to pale orange with thick residual paleosoil, orange to red;
Mh2, Hawthorne Fm., Brooks Sink type, impure dolomites, dolomitic clay and phosphorite sand and gravel, some impure Is., phosphorite as concentrations at multiple intraformational unconformities and diastems, this is bed rock of the Bone Valley phosphate mining district;
Mhl, Hawthorne Fm., Devils Millhopper type, clayey sand and clay with sandy to clayey Is. in lower portion, waxy olive green palygorskite is dominant clay, blocky siliceous claystone is common in the peninsula;
Ms, Shoal River Fm., unfossiliferous to fossiliferous, micaceous silty fine sand to sandy clay, moderately to highly consolidated, penetrometer readings 2.5 to over 4 tons/ft.', dark blue-gray to grayish green (The lower memberof the Jackson Bluff Fm., Late Mio.,and Red Bluff Fm. are lithologically inseparable as is the Chipola Frn. on Ten Mile Creek that contains an Early Mio. fauna. Ms interfingers down dip with Pensacola Clay, Bruce Creek Ls. and Intracoastal Fm. and up dip with Citronelle Fm.);
Mch and Mt, Chattahoochee Frn. and Tampa Fm., argillaceous to sandy impure Is., some green clay and sandy claystone partings and beds, zones of hard rubbly Is. in marl matrix occur, silicified fossils, especially corals and oysters are common as are shells of terrestrial snails, medium to coarse sand beds interfinger from the north.
*Oliogocene: Od, Duncan Church facies of Suwannee Ls., microfossiliferous, partially recrystalized soft to hard granular Is., pale yellowish orange;
Os, Suwannee Ls., bedded pure to slightly sandy Is., cryptocrystalline hard dense Is., often occurs in marly matrix, becomes interbedded downward with soft porous limerock characteristic of the Ocala Ls., much secondary dolomitization;
Om, Marianna Ls., chalky, homogeneous massive fossiliferous Is., soft to medium hard, tan to light gray.
*Eocene: Eo, Ocala Ls., "limerock" consisting of the skeletons of fossils in a silt to sand size matrix, skeletons originally as aragonite are now molds, 93-96% CaCo, usually soft porous and friable, massive chert odules occur near top, lower portion is rubbly and very small spheroidal fossils are dominant;
Ea, Avon Park Fm., finely crystalline dolomite to dolomitic silt, tan to brown, soft to very hard, in some places it is a silty soft cream colored fossiliferous Is.