FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION (VERSION 1.0) SURFICIAL GEOLOGY Geodataset Name: SURGEO Geodataset Type: Shape Geodataset Feature: Polygon GENERAL DESCRIPTION This is a statewide surficial geology coverage. DATA SOURCE(S): UNITED STATES GEOLOGICAL SURVEY -digitized county geology maps SCALE OF ORIGINAL SOURCE MAPS: 1: 125,000 GEODATASET EXTENT: State of Florida FEATURE ATTRIBUTE TABLES Data file Name: SURGEO.DBF ITEM NAME WIDTH TYPE PRECISION AREA 12 Decimal 3 PERIMETER 12 Decimal 3 SURGEO_ 11 Decimal 0 SURGEO_ID 11 Decimal 0 GEO 8 Character AGE 3 Decimal 0 DESCRIPT 50 Character FEATURE ATTRIBUTE TABLES CODES AND VALUES Item Item description GEO Geologic formation or unit as described below: VALUE DESCRIPTION QUATERNARY Qa Anastasia Fm. Variably lithified coquina of shells and sands and unlithified fossiliferous sand. Qal Alluvium deposited in the river flood plains. Quartz sands, silts, and clays with varying percentages of organic matter. Often consists of reworked Citronelle Fm. and older units. Very fine to coarse grained. Designation used only in the panhandle. Qbd Quartz sands with surface expression of beach ridges and dunes. A geomorphic unit on undifferentiated, often clean, quartz sands. Generally fine to medium grained. No formations recognized. May contain shell. Qbda Quartz sands with surface expression of beach ridges and dunes with Anastasia Formation below. A geomorphic unit on undifferentiated, often clean, quartz sands. Generally fine to medium grained. No formations recognized. May contain shell. Qd Quartz sands with surface expression of dunes. A geomorphic unit on undifferentiated, often clean quartz sands. Generally fine to medium grained. Qh/Qph Holocene sediments consisting of quartz sand with minor amounts of organic matter and clay associated with lagoonal deposits. Mostly beach and dune sands along present coastline. No formations recognized. Qk Key Largo Limestone. White to gray, highly fossiliferous, coralline limestone. A fossil coral reef facies. Qm Miami Limestone. White to light gray limestone, variably fossiliferous, oolitic and pelletal. Variable percentages of quartz sand ranging from a sandy limestone to a calcareous quartz sand. Qr Holocene fluvial and lacustrine sands, clays, marls and peats. No formations recognized. Used in peninsular area only. Qsu Shell beds, undifferentiated. Includes sediments previously placed in units primarily differentiated by the included fauna (e.g. the Caloosahatchee, Ft. Thompson, and Nashua Formations,Pinecrest Beds). Qtma Transitional between Miami Ls. and Anastasia Fm. Some characteristics of each. Qtr Quartz sands forming Trail Ridge and Baywood Promontory. Dunal sands, peat layers, heavy-mineral placer deposits. Qu Undifferentiated surficial sands, clayey sands, clays, marls and peats >20 feet thick. No formations recognized. Quc Undifferentiated sands reworked from Cypresshead Fem. Also isolated occurrences of Cypresshead. QUATERNARY/TERTIARY Qtci Citronelle Formation (reworked). Fine to coarse grained sands with gravel, silt and clay. Often oxidized to reddish hues in exposures. Appears to be reworked Tci with very little to no lithologic change. Qtrs Sandy and clayey residuum of pre-existing units laying on Tertiary carbonates. Qtu Undifferentiated sands. May contain some Cypresshead Fm.. Generally no formations recognized. Lies on Hawthorn Group or Ocala Limestone. Often karstified with some of the karst features containing Hawthorn Group sediments. Qtuk Undifferentiated sands lying on highly karstic Ocala Limestone. Karst features may contain Hawthorn Group sediments. Tqd Quartz sands with surface expression of dunes. A geomorphic unit on undifferentiated, often clean quartz sands. Generally fine to medium grained. TERTIARY Tab Undifferentiated Alum Bluff Group. Clays, silts and sands. Often greenish to gray hues. May contain shells. Tc Cypresshead Fm. quartz sands with minor clay. Lies on Hawthorn Group. Tchat Chattahoochee Formation. Dolostones with subordinate limestone, clays, silts. Fossiliferous, often moldic. Tci Citronelle Formation. Fine to coarse grained sands with gravel, silt and clay. often oxidized to reddish hues in exposures. Reworked phase of this is Qtci. Th Hawthorn Group. Sandy clays, silt, occasional carbonates. Usually phosphatic. Tha Arcadia Formation (undifferentiated) of the Hawthorn Group. Consists predominantly of carbonates which are variably quartz and phosphate sandy and clayey. Sand and clay beds are often present. Dolostone is generally the dominant carbonate component except in the Tampa Member. That Tampa Member of the Arcadia Formation, Hawthorn Group. Consists predominantly of limestone with subordinate dolostone, quartz sands and clays. Limestone contains variable quartz sand and clay, but contains little or no phosphate. Thpb Bone Valley Member of the Peace River Formation, Hawthorn Group. Consists of pebble- or gravel-sized phosphate fragments and sand-sized phosphate grains in a matrix of quartz sand and clay. Percentages of the various components are highly variable. Thcc Charlton Member of the Coosawhatchie Formation, Hawthorn Group. Composed of clays and carbonates generally with little sand and no phosphate. Thpr Peace River Formation of the Hawthorn Group. Consists of interbedded quartz sands, clays and carbonates, all of which are variably phosphatic. Ths Hawthorn Group sediments near surface. Exposed in stream runs and springs. Generally swampy conditions. Surface sediments may exceed 20 feet thick away from streams and springs. Very sparse data in these areas. Tjb Jackson Bluff Formation. Variably sandy clay often with abundant fossils, greenish gray to light olive green. Tko Extremely karstified Ocala Limestone. Data indicates pinnacled limestone with sand varying from a few feet thick to more than 60 feet. As sands become more consistently thick, this unit becomes Qtuk. Tks Suwannee Limestone, karstified, overlain by variable thicknesses of siliciclastic sediments. Tmc Miccosukee Formation. Clayey sand to sandy clay with clay stringers and lenses, occasionally cross bedded, reddish orange to brick red, oxidized, poorly to moderately consolidated. To Ocala Limestone. White to gray, fossiliferous, moldic limestone. Variable from wackestone to rainstone. Tre Residuum on Eocene. Clay, sandy clay and clayey sands resulting from the dissolution of Eocene to Miocene carbonates and lowering/ reworking of Tertiary siliciclastic sediments. Trm Residuum on Miocene. Clay, sandy clay and clayey sand resulting from the dissolution of Miocene carbonates and lowering/reworking of Tertiary siliciclastic sediments. Tro Residuum on Oligocene. Clay, sandy clay and clayey sand resulting from the dissolution of Oligocene-Miocene carbonates and lowering/ reworking of Tertiary siliciclastic sediments. Ts Suwannee Limestone. Marine limestone, fossiliferous, varies from poorly recrystallized to well recrystallized, packstone to grainstone. Minor siliciclastic component. Tsm Undifferentiated Suwannee Limestone and Marianna Limestone. Limestone, white to pale orange, fossiliferous, moldic, varies from wackestone to grainstone. Minor siliciclastic component. NOTE- Tsm in Wakulla, Leon and Jefferson Counties will be changed to Tsmk for Saint Marks Fm.. Tsmk St.Marks Formation. Marine limestone, white to tan, often sandy, fossiliferous with abundant mollusk molds, moldic, varies from wackestone to packstone, more muddy than Ts. Tt Tamiami Formation. Sandy limestones, sands, clays, "marls" with a variable phosphate and fossil content. Often very fossiliferous. Buckingham "marl" member contains significant percentages of phosphate. Ttma Transitional Miami Limestone to Anastasia Formation. Twh Weathered Hawthorn Group sediments, highly leached sands and clayey sands of the Brooksville Ridge. DESCRIPT Based on GEO USER NOTES: FGDL QUALITY ASSURANCE STATUS : No QA performed as of FGDL v. 1 REFERENCES: DATA LINEAGE SUMMARY: This geodata set was digitized from county geology maps published by the Florida Geological Survey as part of Florida Radon Potential Mapping Project. Digitizing and coding work was quantity controlled by the Florida Geologic Survey. MAP PROJECTION PARAMETERS Projection ALBERS Units METERS Datum NAD27 Spheroid CLARKE 1866 1st standard parallel 24 0 0.000 2nd standard parallel 31 30 0.000 central meridian -84 0 0.000 latitude of projection's origin 24 0 0.000 false easting (meters) 400000.00000 false northing (meters) 0.00000 DATA SOURCE CONTACT(S): Name: UNITED STATES GEOLOGICAL SURVEY Abbr. name: USGS Address: USGS Mapping Applications Center National Cartographic Info Center 507 National Center Reston VA 22092 Phone: (703) 860-6045 Fax: (703) 648-4165 Web site: http://www-nmd.usgs.gov\ Ftp site: E-mail: MACWEBMASTER@USGS/GOV Contact Person: They will route your message to the person best qualified to respond. Phone: E-mail: FGDL CONTACT: Name: UNIVERSITY OF FLORIDA GEOPLAN CENTER Abbr. Name: GeoPlan Center Address: University of Florida, GeoPlan Center 431 Architecture PO Box 115706 Gainesville, FL 32611-5706 Phone: (352) 846-3125 Fax: (352) 846-3124 Web site: http://www.geoplan.ufl.edu/projects/fgdl.htm Contact FGDL*: to request FGDL data: fgdl-request@geoplan.ufl.edu to report data problems: fgdl-data@geoplan.ufl.edu for Viewer problems: fgdl-apps@geoplan.ufl.edu for image problems: fgdl-image@geoplan.ufl.edu for FGDL Viewer Extensions: www.geoplan.ufl.edu/projects/fgdl.htm or ftp.geoplan.ufl.edu * Please use the email address as the primary method of contacting GeoPlan. The phone number can be used as a secondary form of contact. Thank you.