Metadata: Identification_Information: Citation: Citation_Information: Originator: Feliks Persits Originator: Michele Tuttle Originator: Ronald Charpentier Originator: Michael Brownfield Originator: Kenneth Takahashi Publication_Date: 1997 Title: Maps showing geology, oil and gas fields and geological provinces of Africa Edition: 1.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 97-470A Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Larger_Work_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 1998 Title: World energy data on CD-ROM Edition: 1.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 97-470 Online_Linkage: http://energy.cr.usgs.gov/energy/WorldEnergy/WEnergy.html Description: Purpose: The data provide government, geological community, consultants, and public with information on important geological basis used to define provinces and oil and gas fields for USGS oil and gas assessement of the world. Abstract: Map showing geology, oil and gas fields and geologic provinces of Africa in a data set designed originally in ESRI's ARC/INFO geographic information system, version 7.0.4. Supplemental_Information: The data set contains the following components: >COVER (directory) > Contains original UNIX ARC/INFO (ver. 7.0.4) coverages in > Robinson projection. The ARC/INFO coverages are > supplemented by several files (total 30) in ARC/INFO > INTERCHANGE format (where it was available). These files > allow user to produce complete Map Composition of data at > a scale 1:12,500,000 by using ARCPLOT subsystem. >COVER/geo2_7 (coverage) > Surficial geology. Item "glg" in Feature Attribute Table. >COVER/prov2_7 (coverage) > Geological Provinces that outline areas with common > geological structures and petroleum systems. There are > two additional items in the FAT, "code" - Geologic > Province code and "name" - Geologic Province name. >COVER/fld2_7 (coverage) > Centerpoints of Oil and Gas fields. >COVER/pol2_7 (coverage) > Country boundaries. >COVER/llf2_7 (coverage) > Latitude/Longitude grid with cell size 4 * 6 degree. >COVER/reg_2_7 (coverage) > Boundary between region 2 (Middle East/North Africa and > 7 (Sub Saharan Africa). These regions are two of the > eight regional subdivisions in the USGS Oil and Gas > assessment of the World. >COVER/anno2_7 (coverage) > Annotations for ocean names. >COVER/shore2_7 (coverage) > Shoreline for Africa and surrounding areas >EXPRT_UX (directory) > This directory contains several subsets of the data in > export and ungenerate formats for use on UNIX systems: ( > 1) ARC/INFO EXPORT data set (Robinson projection) > consisting of eight files in ARC/INFO INTERCHANGE > format (*.e00 files without compression). File names are > correspondent to the original coverages names (see > directory COVER). (2) ARC/INFO UNGENERATE files (ASCII > comma delimeted) for four major coverages (*.gen > extention). File names correspond to the original > coverage names. (3) Attribute files (*.csv extention). > Contains ASCII, comma delimeted files for the five > feature attribute tables of the ARC/INFO coverages. >EXPRT_PC (directory) > same contents as EXPRT_UX but for PC's not running UNIX. >PLOT (directory) > Files to facilitate plotting and printing the map. >PLOT/afr_map (directory) > Complete map composition for use in ARC/INFO ARCPLOT, a > collection of *.gra files. >PLOT/prov2_7 (directory) > Complete map composition without geology for use in ARC/ > INFO ARCPLOT, a collection of *.gra files. >PLOT/afr.hp2 (file) > Plot file for all the data in HPGL2 format. >PLOT/provs.hp2 (file) > Plot file for data without geology in HPGL2 format. >TEXT_UX (directory) >TEXT_UX/plot_aml (text file) > AML file to produce complete Map Composition at a scale > 1:12,500,000 and to plot map composition automatically on > HP650C plotter. To use this file the user must set actual > full path name to the data or copy all the files to > single directory (by Feliks Persits). >TEXT_UX/usgs_lab (text file) > USGS headline text >TEXT_UX/source (text file) > List of all the sources of the data >TEXT_UX/authors (text file) > Who participated in Data Set creation. >TEXT_UX/pol_txt (text file) > Text indicating political boundaries are for reference > and are not definitive in any manner. >TEXT_UX/geo_rob (text file) > Command file for PROJECT (Geographic to Robinson). >TEXT_UX/tr_rob (text file) > Command file for PROJECT (Transverse Mercator to Robinson). >TEXT_UX/index (text file) > Text for small index map showing Provinces and boundary > between regions 2 and 7. >TEXT_UX/prov_key (text file) > Key-legend file for Province outlines >TEXT_UX/pol_key (text file) > Key-legend file for International boundaries >TEXT_UX/map_key (text file) > Base key file for map legend >TEXT_UX/oil_key (text file) > Key-legend file for Oil/Gas fields centerpoints >TEXT_UX/afr_shd (text file) > Shadeset file >TEXT_UX/mapbar (text file) > AML for drawing scale and scalebar (by B. Beeman) >TEXT_UX/afr_aml (text file) > AML for ARCEDIT >TEXT_UX/pr_draw (text file) > AML for Map Composition without geology. >TEXT_UX/afr_menu (text file) > Menu file for geological attributing. >TEXT_UX/lut_txt (text file) > Text file for look-up table that keeps symbols for every "glg" value. >TEXT_UX/afr_lut (text file) > INFO Look-up table for POLYGONSHADE of "glg" item. >TEXT_UX/block_r (text file) > Text for Projection description >TEXT_UX/fnt034 (text file) > Pattern for afr_shd shadeset >TEXT_UX/of_name (text file) > Open File report Number >TEXT_UX/ds_claim (text file) > Text for disclaimer >TEXT_MAC (directory) > same contents as TEXT_UX but with CR only at the end of each line >TEXT_PC (directory) > same contents as TEXT_UX but with CR LF at the end of each line >VIEWS (directory) > Data in formats compatible with ARCVIEW 3.0 >VIEWS/afr_all.apr (directory) > Project file for use with ARCVIEW 3.0 >VIEWS/geo2_7.shp, .shx, .dbf (shapefile) > Surficial geology in shapefile format >VIEWS/fld2_7.shp, .shx, .dbf (shapefile) > Oil and gas field centerpoints in shapefile format >VIEWS/prov2_7.shp, .shx, .dbf (shapefile) > Geologic provinces in shapefile format >VIEWS/llf2_7.shp, .shx, .dbf (shapefile) > Graticule of latitude and longitude lines 4 x 6 degrees > in shapefile format >VIEWS/pol2_7.shp, .shx, .dbf (shapefile) > Country boundaries in shapefile format >VIEWS/afr_geol.avl (ARCVIEW legend file) > index names for geologic age >VIEWS/afr_age.avl (ARCVIEW legend file) > geologic names without index >adob_aml (AML file) > Commands used to produce complete Map Composition at a > scale 1:12,500,000 by using ARCPLOT subsystem and to plot > Map Composition automatically on HP650C plotter Data_Set_Structure: Data_Set_Part: Part_Name: COVER Part_Type: directory Part_Description: Contains original UNIX ARC/INFO (ver. 7.0.4) coverages in Robinson projection. The ARC/INFO coverages are supplemented by several files (total 30) in ARC/INFO INTERCHANGE format (where it was available). These files allow user to produce complete Map Composition of data at a scale 1:12,500,000 by using ARCPLOT subsystem. Data_Set_Part: Part_Name: geo2_7 Part_Type: coverage Part_Description: Surficial geology. Item "glg" in Feature Attribute Table. Data_Set_Part: Part_Name: prov2_7 Part_Type: coverage Part_Description: Geological Provinces that outline areas with common geological structures and petroleum systems. There are two additional items in the FAT, "code" - Geologic Province code and "name" - Geologic Province name. Data_Set_Part: Part_Name: fld2_7 Part_Type: coverage Part_Description: Centerpoints of Oil and Gas fields. Data_Set_Part: Part_Name: pol2_7 Part_Type: coverage Part_Description: Country boundaries. Data_Set_Part: Part_Name: llf2_7 Part_Type: coverage Part_Description: Latitude/Longitude grid with cell size 4 * 6 degree. Data_Set_Part: Part_Name: reg_2_7 Part_Type: coverage Part_Description: Boundary between region 2 (Middle East/North Africa and 7 (Sub Saharan Africa). These regions are two of the eight regional subdivisions in the USGS Oil and Gas assessment of the World. Data_Set_Part: Part_Name: anno2_7 Part_Type: coverage Part_Description: Annotations for ocean names. Data_Set_Part: Part_Name: shore2_7 Part_Type: coverage Part_Description: Shoreline for Africa and surrounding areas Data_Set_Part: Part_Name: EXPRT_UX Part_Type: directory Part_Description: This directory contains several subsets of the data in export and ungenerate formats for use on UNIX systems: (1) ARC/INFO EXPORT data set (Robinson projection) consisting of eight files in ARC/INFO INTERCHANGE format (*.e00 files without compression). File names are correspondent to the original coverages names (see directory COVER). (2) ARC/INFO UNGENERATE files (ASCII comma delimeted) for four major coverages (*.gen extention). File names correspond to the original coverage names. (3) Attribute files (*.csv extention). Contains ASCII, comma delimeted files for the five feature attribute tables of the ARC/INFO coverages. Data_Set_Part: Part_Name: EXPRT_PC Part_Type: directory Part_Description: same contents as EXPRT_UX but for PC's not running UNIX. Data_Set_Part: Part_Name: PLOT Part_Type: directory Part_Description: Files to facilitate plotting and printing the map. Data_Set_Part: Part_Name: afr_map Part_Type: directory Part_Description: Complete map composition for use in ARC/INFO ARCPLOT, a collection of *.gra files. Data_Set_Part: Part_Name: prov2_7 Part_Type: directory Part_Description: Complete map composition without geology for use in ARC/INFO ARCPLOT, a collection of *.gra files. Data_Set_Part: Part_Name: afr.hp2 Part_Type: file Part_Description: Plot file for all the data in HPGL2 format. Data_Set_Part: Part_Name: provs.hp2 Part_Type: file Part_Description: Plot file for data without geology in HPGL2 format. Data_Set_Part: Part_Name: TEXT_UX Part_Type: directory Part_Description: Data_Set_Part: Part_Name: plot_aml Part_Type: text file Part_Description: AML file to produce complete Map Composition at a scale 1:12,500,000 and to plot map composition automatically on HP650C plotter. To use this file the user must set actual full path name to the data or copy all the files to single directory (by Feliks Persits). Data_Set_Part: Part_Name: usgs_lab Part_Type: text file Part_Description: USGS headline text Data_Set_Part: Part_Name: source Part_Type: text file Part_Description: List of all the sources of the data Data_Set_Part: Part_Name: authors Part_Type: text file Part_Description: Who participated in Data Set creation. Data_Set_Part: Part_Name: pol_txt Part_Type: text file Part_Description: Text indicating political boundaries are for reference and are not definitive in any manner. Data_Set_Part: Part_Name: geo_rob Part_Type: text file Part_Description: Command file for PROJECT (Geographic to Robinson). Data_Set_Part: Part_Name: tr_rob Part_Type: text file Part_Description: Command file for PROJECT (Transverse Mercator to Robinson). Data_Set_Part: Part_Name: index Part_Type: text file Part_Description: Text for small index map showing Provinces and boundary between regions 2 and 7. Data_Set_Part: Part_Name: prov_key Part_Type: text file Part_Description: Key-legend file for Province outlines Data_Set_Part: Part_Name: pol_key Part_Type: text file Part_Description: Key-legend file for International boundaries Data_Set_Part: Part_Name: map_key Part_Type: text file Part_Description: Base key file for map legend Data_Set_Part: Part_Name: oil_key Part_Type: text file Part_Description: Key-legend file for Oil/Gas fields centerpoints Data_Set_Part: Part_Name: afr_shd Part_Type: text file Part_Description: Shadeset file Data_Set_Part: Part_Name: mapbar Part_Type: text file Part_Description: AML for drawing scale and scalebar (by B. Beeman) Data_Set_Part: Part_Name: afr_aml Part_Type: text file Part_Description: AML for ARCEDIT Data_Set_Part: Part_Name: pr_draw Part_Type: text file Part_Description: AML for Map Composition without geology. Data_Set_Part: Part_Name: afr_menu Part_Type: text file Part_Description: Menu file for geological attributing. Data_Set_Part: Part_Name: lut_txt Part_Type: text file Part_Description: Text file for look-up table that keeps symbols for every "glg" value. Data_Set_Part: Part_Name: afr_lut Part_Type: text file Part_Description: INFO Look-up table for POLYGONSHADE of "glg" item. Data_Set_Part: Part_Name: block_r Part_Type: text file Part_Description: Text for Projection description Data_Set_Part: Part_Name: fnt034 Part_Type: text file Part_Description: Pattern for afr_shd shadeset Data_Set_Part: Part_Name: of_name Part_Type: text file Part_Description: Open File report Number Data_Set_Part: Part_Name: ds_claim Part_Type: text file Part_Description: Text for disclaimer Data_Set_Part: Part_Name: TEXT_MAC Part_Type: directory Part_Description: same contents as TEXT_UX but with CR only at the end of each line Data_Set_Part: Part_Name: TEXT_PC Part_Type: directory Part_Description: same contents as TEXT_UX but with CR LF at the end of each line Data_Set_Part: Part_Name: VIEWS Part_Type: directory Part_Description: Data in formats compatible with ARCVIEW 3.0 Data_Set_Part: Part_Name: afr_all.apr Part_Type: directory Part_Description: Project file for use with ARCVIEW 3.0 Data_Set_Part: Part_Name: geo2_7.shp, .shx, .dbf Part_Type: shapefile Part_Description: Surficial geology in shapefile format Data_Set_Part: Part_Name: fld2_7.shp, .shx, .dbf Part_Type: shapefile Part_Description: Oil and gas field centerpoints in shapefile format Data_Set_Part: Part_Name: prov2_7.shp, .shx, .dbf Part_Type: shapefile Part_Description: Geologic provinces in shapefile format Data_Set_Part: Part_Name: llf2_7.shp, .shx, .dbf Part_Type: shapefile Part_Description: Graticule of latitude and longitude lines 4 x 6 degrees in shapefile format Data_Set_Part: Part_Name: pol2_7.shp, .shx, .dbf Part_Type: shapefile Part_Description: Country boundaries in shapefile format Data_Set_Part: Part_Name: afr_geol.avl Part_Type: ARCVIEW legend file Part_Description: index names for geologic age Data_Set_Part: Part_Name: afr_age.avl Part_Type: ARCVIEW legend file Part_Description: geologic names without index Data_Set_Part: Part_Name: adob_aml Part_Type: AML file Part_Description: Commands used to produce complete Map Composition at a scale 1:12,500,000 by using ARCPLOT subsystem and to plot Map Composition automatically on HP650C plotter Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1997 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -17.4 East_Bounding_Coordinate: 63.36 North_Bounding_Coordinate: 38.3 South_Bounding_Coordinate: -37.1 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: Oil Theme_Keyword: Gas Theme_Keyword: Geology Place: Place_Keyword_Thesaurus: none Place_Keyword: Africa Theme: Theme_Keyword_Thesaurus: National Geologic Map Database Catalog themes, augmented Theme_Keyword: 2500 - Political Boundaries Theme_Keyword: 1400 - Resources Theme_Keyword: 1403 - Fuels Theme_Keyword: 1100 - Geology Theme_Keyword: 1101 - General Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Categories Theme_Keyword: geoscientificInformation Place: Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4, version 1.0 Place_Keyword: LD50 = Africa Access_Constraints: None Use_Constraints: None Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Central Energy Resource Team Contact_Person: Dr. Thomas Ahlbrandt Contact_Position: Project Chief Contact_Address: Address_Type: mailing and physical address Address: Mail Stop 939 Box 25046 Denver Federal Center City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-5776 Contact_Facsimile_Telephone: 303-236-8822 Contact_Electronic_Mail_Address: ahlbrandt@usgs.gov Data_Set_Credit: Digital Map Compilation - Feliks Persits Geological Attribution - Feliks Persits, Thomas Ahlbrandt, Michelle Tuttle, Ronald Charpentier, Michael Brownfield Province Boundaries: Region 2 - Thomas Ahlbrandt, Region 7 - Michelle Tuttle Province Boundaries Digital Compilation - Lee Osmonson Oil and Gas Database - Tim Klett Native_Data_Set_Environment: Hardware: Sun Sparc Server 1000 with Solaris 2.5.1 GIS software: Workstation ARC/INFO ver. 7.0.4 Set of subdirectories of 382 MB total size Cross_Reference: Citation_Information: Originator: Commission for the Geological Map of the World (CGMW) International Geological Mapping Bureau (BRGM), UNESCO Publication_Date: 1990 Title: International Geological Map of Africa Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Paris, France Publisher: CGMW and UNESCO with the financial support of BRGM Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Overall accuracy based on accuracy of general geology coverage. The scanned images of each of five sheets of original paper map (from UNESCO base geologic map) were transformed to Transverse Mercator projection with RMS error not more than 2500 m (0.5 mm in original paper map). No rubber transformation applied. Gray-scale images were used as a background in ARCEDIT digitizing. Maximum shift a line in a coverage from centerline of its copy on image did not exceed 1500-1700 m. Final plot of 1:5,000,000 scale was superimposed on a top of original map, maximum error did not exceed 3500 m. Quantitative_Attribute_Accuracy_Assessment: Attribute_Accuracy_Value: Standard ARC/INFO attributes accuracy in Feature Attributes Tables like AREA, PERIMETER, etc. depend on horizontal positional Accuracy (Section 2.4.1.1). All the additional attributes are character type. Attribute_Accuracy_Explanation: All the Attributes besides standard ARC/INFO are character type. Standard verification of attributes reliability has been done by ARC/INFO EDITPLOT program to find out polygons without assigned character value or with more than one value. Logical_Consistency_Report: Since Data set is collection of ARC/INFO coverages topological consistency are supported. Fuzzy tolerance has been maintained the same through all processing steps. Based on fuzzy tolerance value all undershoots and overshoots were detected and deleted. A comparison between color plot and original paper map was carried out by visual comparison. Color plots in 1:5,000,000 scale were superimposed on every of correspondent original map sheets. All detected errors in attributes were corrected. Completeness_Report: The generalizations of original geological map (UNESCO) were carried out: 1. Several geological age subdivisions on original (UNESCO) 1:5,000,000 geological map were combined into single units. For example, all Cretaceous combined into one unit. 2. All the Precambrian subdivisions were combined into one unit. This version of Geologic Province Boundaries are correct as of July, 1997. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: 1. Original geological maps are of 500 m. maximum accuracy (0.1 mm on paper map of 1:5,000,000 scale) 2. Scanned images were of 200 dot/inch resolution (0.12 mm on paper). That is why fuzzy tolerance for CLEAN program in ARC/INFO was set to 500 m. Average positional accuracy can be evaluated as 1000 m (twice of fuzzy tolerance). Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: 1000 Horizontal_Positional_Accuracy_Explanation: meters Lineage: Source_Information: Source_Citation: Citation_Information: Originator: CGMW and UNESCO Publication_Date: 1990 Title: International Geologic Map of Africa Edition: 1987-1990 Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Paris,France Publisher: CGMW and UNESCO Source_Scale_Denominator: 5,000,000 Type_of_Source_Media: Paper Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1987 Ending_Date: 1990 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Paper Geologic Map Source_Contribution: All the five paper map sheets are used as the sources for creation the correspondent ARC/INFO coverages. Source_Information: Source_Citation: Citation_Information: Originator: USGS, Central Region Publication_Date: unpublished material Title: Binary and gray-scale images Geospatial_Data_Presentation_Form: map Other_Citation_Details: Intermediate data Source_Scale_Denominator: 5,000,000 Type_of_Source_Media: online Source_Citation_Abbreviation: Scanned images Source_Contribution: Used as a background for digitizing in ARCEDIT. Source_Information: Source_Citation: Citation_Information: Originator: USGS, Central Region, World Energy Resource Team Publication_Date: Unpublished material Title: Mylar Publication_Information: Publication_Place: unpublished material Other_Citation_Details: Intermediate data Source_Scale_Denominator: 5,000,000 Type_of_Source_Media: Stable-base material Source_Citation_Abbreviation: Mylar Source_Contribution: Mylar used to extract geological boundaries from original paper map and produce binary scanned image. Source_Information: Source_Citation: Citation_Information: Originator: Petroconsultants International Data Corp. Publication_Date: 1996 Title: PetroWorld Database Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Geneva, Switzerland Publisher: Petroconsultants International Data Corp. Other_Citation_Details: All data in Petroworld Database use Latitude and Longitude coordinates in Decimal Degrees. Type_of_Source_Media: CD-ROM Source_Citation_Abbreviation: Centerpoints of Oil and Gas Fields Source_Contribution: Centerpoints of Oil and Gas Fields were reprojected to Robinson Projection and used as the layer on final ARC/INFO Map Composition. Source_Information: Source_Citation: Citation_Information: Originator: ESRI Title: ArcWorld 1:3 million geographical data set. Publication_Information: Publication_Place: Redlands, CA, USA Publisher: ESRI Other_Citation_Details: There are many informational layers in this data set. Coordinates are Latitude and Longitude in Decimal Degrees. Source_Scale_Denominator: 3000000 Type_of_Source_Media: CD-ROM Source_Citation_Abbreviation: Country boundaries Source_Contribution: The external source for country boundaries in ARC/INFO final Map Composition. Process_Step: Process_Description: Paper geological map digitizing. Source_Used_Citation_Abbreviation: Paper Geologic Map Process_Date: 1996 Source_Produced_Citation_Abbreviation: Transparent mylar copy, Binary and gray-scale images Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Central Region Contact_Person: Feliks Persits Contact_Position: USGS contractor Contact_Address: Address_Type: mailing and physical address Address: U.S. Geological Survey Energy Resource Program Denver Federal Center, MS 939 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-4608 Contact_Electronic_Mail_Address: fpersits@usgs.gov Hours_of_Service: 9 a.m. - 5 p.m. local time U.S. Rocky Mountain Time Zone Process_Step: Process_Description: Scanning mylars and original paper maps on large format Anatech Eagle scanner. There were two copies of every map sheet - binary (after mylar scanning) and gray-scale (after original map scanning). Both image copies were in TIFF format at 200 dot/inch resolution. Source_Used_Citation_Abbreviation: Paper geological maps Source_Used_Citation_Abbreviation: Mylars Process_Date: 1997 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Entity point SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Area point Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Robinson Robinson: Longitude_of_Projection_Center: 0 False_Easting: 0 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 1 Ordinate_Resolution: 1 Planar_Distance_Units: meters Geodetic_Model: Ellipsoid_Name: Sphere Semi-major_Axis: 6370997 Denominator_of_Flattening_Ratio: 1.0 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.006 Longitude_Resolution: 0.006 Geographic_Coordinate_Units: Decimal Degrees Geodetic_Model: Ellipsoid_Name: Sphere Semi-major_Axis: 6370997 Denominator_of_Flattening_Ratio: 1.0 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Polygon of surficial geology Entity_Type_Definition: Polygon features in coverage geo2_7 and corresponding ARCVIEW shape file geo2_7.dbf Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: glg Attribute_Definition: Geologic series. These values can be used with Look-up table /text/afr_lut in ARC/INFO or with legend file (.avl in ARCVIEW to plot colored geological map. Attribute_Definition_Source: USGS, values taken from original map legend. Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Q Enumerated_Domain_Value_Definition: Quaternary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Qe Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Qp Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: QT Enumerated_Domain_Value_Definition: Quaternary or Tertiary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: T Enumerated_Domain_Value_Definition: Tertiary Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Mz Enumerated_Domain_Value_Definition: Mesozoic Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: TK Enumerated_Domain_Value_Definition: Triassic - Cretaceous Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: K Enumerated_Domain_Value_Definition: Cretaceous Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Kl Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: KJ Enumerated_Domain_Value_Definition: Cretaceous - Jurassic Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: J Enumerated_Domain_Value_Definition: Jurassic Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Jl Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: JTr Enumerated_Domain_Value_Definition: Jurassic - Triassic Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Tr Enumerated_Domain_Value_Definition: Triassic Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Trl Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Pz Enumerated_Domain_Value_Definition: Paleozoic Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: MzPz Enumerated_Domain_Value_Definition: Mesozoic - Paleozoic Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: P Enumerated_Domain_Value_Definition: Permian Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: TrP Enumerated_Domain_Value_Definition: Triassic - Permian Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: KC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: PC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: JC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: C Enumerated_Domain_Value_Definition: Carboniferous Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: CD Enumerated_Domain_Value_Definition: Carboniferous - Devonian Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Du Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: D Enumerated_Domain_Value_Definition: Devonian Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: DS Enumerated_Domain_Value_Definition: Devonian - Silurian Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: S Enumerated_Domain_Value_Definition: Silurian Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: SO Enumerated_Domain_Value_Definition: Silurian - Ordovician Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: O Enumerated_Domain_Value_Definition: Ordovician Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: OCm Enumerated_Domain_Value_Definition: Ordovician - Cambrian Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Cm Enumerated_Domain_Value_Definition: Cambrian Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: pC Enumerated_Domain_Value_Definition: Precambrian Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: PzpC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Qv Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ti Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Mi Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: MiPi Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Pi Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Kimb Enumerated_Domain_Value_Definition: Kimberlite Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Salt Dome Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Unmapped area Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Open water Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sea Detailed_Description: Entity_Type: Entity_Type_Label: Geologic Province outlines Entity_Type_Definition: Polygons in coverage prov2_7 and corresponding ARCVIEW shape file prov2_7.dbf Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: code Attribute_Definition: Arbitrary, unique, integer geologic province code Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7000 Range_Domain_Maximum: 7999 Attribute: Attribute_Label: name Attribute_Definition: Name of geologic province (character) Attribute_Definition_Source: USGS unique subdivisions of petroleum geology for African continent. Detailed_Description: Entity_Type: Entity_Type_Label: Centerpoints of Oil and Gas fields Entity_Type_Definition: Point features in coverage fld2_7 and corresponding ARCVIEW shape file fld2_7.dbf Entity_Type_Definition_Source: Petroconsultants International Data Corp. Attribute: Attribute_Label: Longitude Attribute_Definition: Centerpoint longitude (attribute value matches geography) Attribute_Definition_Source: Petroconsultants International Data Corp. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -17.4 Range_Domain_Maximum: 63.36 Attribute_Units_of_Measure: Decimal Degrees Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: Latitude Attribute_Definition: Centerpoint latitude (attribute value matches geography) Attribute_Definition_Source: Petroconsultants International Data Corp. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -37.1 Range_Domain_Maximum: 38.3 Attribute_Units_of_Measure: Decimal Degrees Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: Prov_code Attribute_Definition: Integer unique value for each province. Attribute_Definition_Source: Petroconsultants International Data Corp. Attribute: Attribute_Label: Fie_id Attribute_Definition: Integer unique value for each field. Attribute_Definition_Source: Petroconsultants International Data Corp. Overview_Description: Entity_and_Attribute_Overview: ARC/INFO coverage named /cover/pol2_7 and ARCVIEW shape file /views/pol2_7 created from ESRI's ArcWorld 1:3 million Map. This is a line coverage with many Items in Arc Attribute Tables. These Items are of minor importance for this Project. Entity_and_Attribute_Detail_Citation: This is ESRI's ArcWorld 1:3 million ARC/INFO coverage. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Information Services Contact_Address: Address_Type: mailing and physical address Address: U.S. Geological Survey Box 25286, Building 810 Denver Federal Center City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS Contact_Facsimile_Telephone: 303-202-4693 Contact_Electronic_Mail_Address: infoservices@usgs.gov Resource_Description: USGS Open-File Report 97-470A Distribution_Liability: Although these data have been processed on computer system at the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the Geological Survey regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE and ungenerate Format_Version_Number: 7.0.4 Format_Information_Content: Coverages Digital_Transfer_Option: Offline_Option: Offline_Media: CD-ROM Recording_Format: ISO 9660 Digital_Form: Digital_Transfer_Information: Format_Name: ARCVIEW Shapefiles Format_Version_Number: 1.0 Format_Information_Content: shapefiles Digital_Transfer_Option: Offline_Option: Offline_Media: CD-ROM Recording_Format: ISO 9660 Fees: See http://mapping.usgs.gov/esic/prices/index.html Technical_Prerequisites: To use coverage data you need to have ARC/INFO ver. 7.0.4 or higher installed. To use ARCVIEW data you need to have ARCVIEW 3.0 installed. If you dont't have ARC/INFO other similar data set is available in Adobe Systems, Inc., Portable Document Format(TM) (PDF). (You must download and install the Adobe(R) Reader, available at no charge from Adobe Systems, to view and print this version.) Metadata_Reference_Information: Metadata_Date: 19990910 Metadata_Review_Date: 19990910 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Feliks Persits Contact_Organization: USGS Central Energy Resource Team Contact_Address: Address_Type: mailing Address: Mail Stop 939 Box 25046 Denver federal Center City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-4608 Contact_Electronic_Mail_Address: fpersits@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Extensions: Online_Linkage: http://geology.usgs.gov/tools/metadata/tools/ext/parts.ext