Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2007 Title: SURFICIALGEOLOGY - Interpretation of the Surficial Geology of Apalachicola Bay and St. George Sound, Florida Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open-File Report Issue_Identification: 2006-1381 Publication_Information: Publication_Place: Woods Hole Science Center, Woods Hole, Massachusetts Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/of/2006/1381/GIS/shapefiles/SurficialGeology.zip Larger_Work_Citation: Citation_Information: Originator: David C. Twichell Originator: Brian D. Andrews Originator: H. Lee Edmiston Originator: William R. Stevenson Publication_Date: 2006 Title: Geophysical Mapping of oyster habitats in a shallow estuary; Apalachicola Bay, Florida Edition: 1.0 Series_Information: Series_Name: Open-File Report Issue_Identification: 2006-1381 Publication_Information: Publication_Place: Woods Hole Science Center, Woods Hole, Massachusetts Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/of/2006/1381/ Description: Abstract: These data were collected under a cooperative mapping program between the U.S. Geological Survey (USGS), the National Oceanic and Atmospheric Administration Coastal Services Center (NOAA\CSC), and the Apalachicola National Estuarine Research Reserve (NERR). The primary objectives of this program were to collect marine geophysical data to develop a suite of seafloor maps to better define the extent of oyster habitats, the overall seafloor geology of the bay and provide updated information for management of this resource. In addition to their value for management of the bay's oyster resources, the maps also provide a geologic framework for scientific research and the public. High-resolution bathymetry, backscatter intensity, and seismic profile data were collected over 230 square kilometers of the floor of the bay. The study focused on the Apalachicola Bay and Western St. George Sound portions of the estuary in mostly in depths > 2.0 meters. Purpose: This shapefile provides a high-resolution interpretation of the surficial geology of Apalachicola Bay, and western part of St. George Sound, Florida. The interpretation is based on the sidescan sonar imagery, the bathymetry, available sediment sample information, and seafloor observations. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -85.096005 East_Bounding_Coordinate: -84.755168 North_Bounding_Coordinate: 29.783119 South_Bounding_Coordinate: 29.601303 Keywords: Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: Woods Hole Science Center Theme_Keyword: WHSC Theme_Keyword: Seafloor Theme_Keyword: Marine Geology Theme_Keyword: field activity serial number 05001 Theme_Keyword: field activity serial number 06001 Theme_Keyword: geologic interpretation Theme_Keyword: Sidescan-Sonar Theme_Keyword: Geology Theme_Keyword: Surficial Sediments Theme_Keyword: interpreted seafloor facies Theme_Keyword: oyster beds Theme_Keyword: geologic mapping Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans and estuaries Theme_Keyword: geoscientificInformation Place: Place_Keyword_Thesaurus: General Place_Keyword: Apalachicola Bay Place_Keyword: Florida Place_Keyword: Apalachicola National Estuarine Research Reserve Place_Keyword: St. George Sound Place_Keyword: Gulf of Mexico Place_Keyword: United States Stratum: Stratum_Keyword_Thesaurus: General Stratum_Keyword: Seafloor Temporal: Temporal_Keyword_Thesaurus: General Temporal_Keyword: 2005 Temporal_Keyword: 2006 Access_Constraints: None Use_Constraints: These data should not be used at map scales less than 1:30,000, for which it is not intended. Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: David Twichell Contact_Organization: U.S. Geological Survey Contact_Position: Oceanographer Contact_Address: Address_Type: mailing and physical address Address: Woods Hole Science Center Address: 384 Woods Hole Rd City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2266 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: dtwichell@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2006/1381/GIS/thumbnails/SurficialGeology.jpg Browse_Graphic_File_Description: JPEG image of SurficialGeology shapefile Browse_Graphic_File_Type: JPEG Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The accuracy of this interpretive data layer is dependent on the level of detail of the source material and interpretation procedures for capturing that source. The primary limiting factor for the level of detail of the source is the scale of the remotely sensed data, and positional accuracy, distribution and total number of surficial samples available for the area. The map scale or remotely sensed image resolution determines the level of content that may be extracted from a given source during digitization. Logical_Consistency_Report: Topology was created for these polygons to identify/verify/and fix the following rules: 1) Polygons must not have gaps. All data gaps less than 15 m across were automatically fixed. A total of 5 errors were identified and fixed 2) Polygons must not overlap. No errors were found. Completeness_Report: Interpreted facies were qualitatively compared to ground truth data collected for NOAA in 1999. No quantitative comparison was conducted. Lineage: Process_Step: Process_Description: This data layer was digitized from visual interpretations using ArcView 3.3. Shapefile was digitized at a zoom scale of 1:5000 or greater. Each polygon was digitized and given one of 11 attributes to describe the general composition of that unit. Process_Date: 20061221 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: David Twichell Contact_Organization: U.S. Geological Survey Contact_Position: Oceanographer Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1589 Country: USA Contact_Voice_Telephone: 508-548-8700 x2266 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: dtwichell@usgs.gov Process_Step: Process_Description: Completed shapefile was imported to a polygon feature class. Topological rules were built to identify and fix any gaps or overlaps between adjacent polygons. Process_Date: 20070102 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Brian Andrews Contact_Organization: U.S. Geological Survey Contact_Position: Geographer Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2348 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: bandrews@usgs.gov Process_Step: Process_Description: Resulting feature class was visually reviewed to identify and edit any polygons that did not extend to the border of the sidescan sonar. Process_Date: 20070125 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Brian Andrews Contact_Organization: U.S. Geological Survey Contact_Position: Geographer Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2348 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: bandrews@usgs.gov Process_Step: Process_Description: Exported feature class from personal geodatabase to a shapefile and projected to geographic. Process_Date: 200707 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Brian Andrews Contact_Organization: U.S. Geological Survey Contact_Position: Geographer Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x 2348 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: bandrews@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: G-polygon Point_and_Vector_Object_Count: 179 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000000 Longitude_Resolution: 0.000000 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: SurficialGeology Entity_Type_Definition: Surficial geology of the Apalachicola Bay and St. George Sound Survey areas Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: FACIES Attribute_Definition: Interpreted seafloor facies Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: shelly sand Enumerated_Domain_Value_Definition: This sea floor type is characterized by a moderate to high backscatter signature on the sidescan imagery. Sediment samples from these areas recovered a mix of sand and shell hash (NOAA, Coastal Services Center, 1999). The shelly sand facies is found in three settings. First, it is found fringing parts of many of the oyster bars. Specifically, this facies is found along the eastern sides of Porter's, Platform, and St. Vincent Bars, it is found along both sides of Hotel and Norman's Bars, and occurs in patches around and between many of the smaller oyster bars. Second, this facies covers some shoal areas where there is no evidence of oysters. The shoal off Cedar Point and two areas west of St. Vincent Bar are examples of such areas. The third setting is the floor of troughs where strong tidal currents actively rework the sea floor. One of these troughs extends eastward along the southern side of the bay from West Pass, and another extends west into Apalachicola Bay from the shallow gap between Cat and East Hole Bars. In these areas, the shelly sand probably represents a lag deposit associated with active reworking by strong tidal currents. The shelly sand facies covers 16.33 km2 of the study area. Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: shell/gravel Enumerated_Domain_Value_Definition: This sea floor type was only identified in a small, relatively deep depression south of Cat Point. This facies has a high-backscatter return, and in this area bottom samples recovered shell hash and some gravel. This shell and gravel appears to be a lag deposit resulting from the strong tidal currents in this area. This facies covers 0.69 km2 Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: sandy mud - mottled Enumerated_Domain_Value_Definition: Sections of the estuary floor have a moderate-to-low backscatter signature that is interrupted by small high-backscatter patches that are mostly 5-15 m in diameter. This mottled sea floor occurs in narrow bands along parts of the southern side of the survey area in St George Sound, and in some larger patches in the western part of Apalachicola Bay on Higgins Shoal and along both flanks of a second low-relief ridge west of St. Vincent Bar. Sediment samples form these mottled areas are sandy mud. The origin of the mottled pattern is unknown. This facies covers 2.60 km2. Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: sand - tidal inlet Enumerated_Domain_Value_Definition: This sea floor type refers to the flood tidal delta deposit shoreward of Government Cut, the manmade inlet that separates St. George Island from Little St. George Island. The surface of this feature is rippled, and inferred to be primarily of sand composition. West Pass does not have a flood tidal delta on its shoreward side. The flood tidal delta shoreward of Government Cut occupies 0.23 km2. Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: sand - sand wave Enumerated_Domain_Value_Definition: Two patches of sand waves were identified in the eastern part of St. George Sound where the sea floor is primarily sand. These sand waves have 50-150 m wavelengths, 0.5-0.8 m heights, and crests that trend northwest. Many of the sand waves are asymmetrical with their steep sides facing to the west. The asymmetry of these bedforms suggests a net westward migration. Sand waves cover 1.39 km2 of the survey area. Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: sand Enumerated_Domain_Value_Definition: This sea floor type refers to clean sand containing no more than small amounts of mud and shell hash. It covers most of the floor of the eastern part of St. George Sound, a large part of the floor of Apalachicola Bay west of St. Vincent Bar, and discontinuous sections of the southern edge of Apalachicola Bay. This facies covers 52.21 km2 of the study area. Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: oyster Enumerated_Domain_Value_Definition: Areas inferred to be covered by oysters show as high backscatter on the sidescan-sonar imagery, coincide with shoal areas on the bathymetry, and bottom observations show living oysters on a shelly sand sea floor. Oyster beds cover 21.91 km2 of the study area Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: mud Enumerated_Domain_Value_Definition: The mud facies covers the largest part of the study area. It appears on the sidescan-sonar imagery as low backscatter, and samples are comprised of at least 70% silt plus clay. The mud facies covers 134 km2 of the study area; an area that includes much of the floor of Apalachicola Bay and the western part of St. George Sound. It occurs mostly in sections of the study area where water depths are deeper than 2 m. Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: dredge/oyster Enumerated_Domain_Value_Definition: Oyster beds that have developed on top of dredge-spoil material. Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: dredge Enumerated_Domain_Value_Definition: These manmade deposits have the same origin as the dredge material/oyster areas however these deposits have a moderate backscatter surface and are inferred to not be covered with oysters. Areas classified as Dredge material cover 0.78 km2 and are found in the eastern part of St. George Sound, and along the western side of the section of the Intracoastal Waterway that trends northward to the mouth of the Apalachicola River. Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: Name Attribute_Definition: Place names for known oyster bars Attribute_Definition_Source: Florida Dept. of Environmental Protection (FLDEP). Attribute: Attribute_Label: Abrev Attribute_Definition: Abbreviation of Facies attribute for map labels Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: O Enumerated_Domain_Value_Definition: Oyster Enumerated_Domain: Enumerated_Domain_Value: Do Enumerated_Domain_Value_Definition: Dredge material/oyster Enumerated_Domain: Enumerated_Domain_Value: D Enumerated_Domain_Value_Definition: Dredge material Enumerated_Domain: Enumerated_Domain_Value: Shg Enumerated_Domain_Value_Definition: Shell/gravel Enumerated_Domain: Enumerated_Domain_Value: Shs Enumerated_Domain_Value_Definition: shelly sand Enumerated_Domain: Enumerated_Domain_Value: S Enumerated_Domain_Value_Definition: Sand Enumerated_Domain: Enumerated_Domain_Value: St Enumerated_Domain_Value_Definition: Sand - tidal inlet Enumerated_Domain: Enumerated_Domain_Value: Ssw Enumerated_Domain_Value_Definition: Sand - sand wave Enumerated_Domain: Enumerated_Domain_Value: SMm Enumerated_Domain_Value_Definition: Sandy mud - mottled Enumerated_Domain: Enumerated_Domain_Value: M Enumerated_Domain_Value_Definition: Mud Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Shg Enumerated_Domain_Value_Definition: Shell/gravel Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: SMm Enumerated_Domain_Value_Definition: Sandy Mud-Mottled Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: St Enumerated_Domain_Value_Definition: Sand - Tidal Inlet Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: Ssw Enumerated_Domain_Value_Definition: Sand-sand wave Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: S Enumerated_Domain_Value_Definition: Sand Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: O Enumerated_Domain_Value_Definition: Oyster Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: M Enumerated_Domain_Value_Definition: Mud Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: Dmo Enumerated_Domain_Value_Definition: Dredge Material/Oyster Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: Dm Enumerated_Domain_Value_Definition: Dredge Material Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: SHAPE_Leng Attribute_Definition: Length in meters. Attribute_Definition_Source: ESRI Attribute: Attribute_Label: SHAPE_Area Attribute_Definition: Area of feature in meters squared. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Brian Andrews Contact_Organization: U.S. Geological Survey, Woods Hole Science Center Contact_Position: Geographer Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2348 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: bandrews@usgs.gov Resource_Description: Downloadable Data Distribution_Liability: Although this data set has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: SHP Format_Version_Number: ArcGIS 9.2 Format_Specification: ESRI polygon shapefile Format_Information_Content: Shapefile contains interpretation of the surficial geology of the study area File_Decompression_Technique: zip Transfer_Size: 30 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2006/1381/GIS/shapefiles/SurficialGeology.zip Access_Instructions: Data can be downloaded via the World Wide Web (WWW) Offline_Option: Offline_Media: DVD-ROM Recording_Capacity: Recording_Density: 4.75 Recording_Density_Units: Gbytes Recording_Format: UDF Fees: None Technical_Prerequisites: The data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.3 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com. Metadata_Reference_Information: Metadata_Date: 20070827 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Brian Andrews Contact_Position: Geographer Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2348 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: bandrews@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Access_Constraints: None Metadata_Use_Constraints: None Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile