Map showing Geology, Oil and Gas Fields, and Geologic Provinces of Africa, version 2.0

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Geological Survey

Publication_Date: 200206

Publication_Time: Unknown

Title:

Map showing Geology, Oil and Gas Fields, and Geologic Provinces of Africa, version 2.0

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name:

World Energy Data on CD-ROM - Open File Report 97-470A, ver. 2.0

Issue_Identification: Africa

Other_Citation_Details:

Description:

Abstract:

Map showing Geology, Oil and Gas fields, and Geologic Provinces of Africa is GIS data set designed originally in ESRI's ARC/INFO

ver. 7.0.4 system. This digitally compiled map includes geology, oil and gas field centerpoints, and geologic provinces of Africa

with some of these components extended into geographically adjacent areas. This digital compilation is an interim product

of the U.S. Geological Survey's World Energy Project (WEP) and part of a series on CD-ROM. The goal of the WEP is

to assess the undiscovered, technically recoverable oil and gas resources of the world. Results of this assessment were reported

in the year 2000 (see USGS DDS-60). The first version of this CD-ROM was published in 1997 (see Persits and others, 1997).

Reasons to issue version 2.0 are:

1. Original ESRIs ArcView shape files were in the Robinson projection. It was found that Robinson projection in ArcView is

an implementation that differs from one used in workstation ArcInfo and therefore shows different values. This version 2.0 uses all

the spatial data in geographic coordinates projected into Mercator projection.

2. Data is provided in both  ESRI's new and more powerful ArcGIS 8.1 as well as in ArcView 3.2 and ArcView 3.0 formats.

          3. Certain off-shore provinces has been expanded to include the 4000 meters water depth.
          4. Geologic characteristics and estimated values for undiscovered oil and gas resources have been added to geologic province coverage.
              Up-dated histograms showing distribution of undiscovered oil and gas resources by Province have been added to Geologic
              Province Map.
          5. AutoPlay, advanced design feature, allows easier use and viewing of the data for Microsoft Windows users.
 

On this CD-ROM there are several data sets subdivided into directories:

1. ArcInfo coverages and export files:

  1.1. COV_GEO - coverage in geographic coordinates

  1.2. COV_TRAN - coverage in Mercator projection

  1.3  EXP_GEO - ArcInfo Export (.e00) file in geographic coordinates

  1.4. EXP_TRAN - ArcInfo Export (.e00) file in Mercator projection

  1.5  EXP_SDTS -  export files in Spatial Data Transfer format.

2. ArcView 3.2 shape files in geographic coordinates:

  2.1. AV_32 - all the shape files and corresponding data files. ArcView project AFR_AV32.APR uses these

  shape files and displays Mercator projection. ArcExplorer project file AFRICA.AEP also uses the

  same shape files but displays the original geographic coordinates.

  2.2. AV_30 - identical to AV_32 for ArcView 3.0 users.

3. ArcGIS 8.1 data in directory Arc_81:

 3.1. AfricaDB.mdb - ArcGIS 8.1 personal geodatabase created from ArcInfo coverages.

 3.2. Africa.mxd - ArcMap 8.1 data set based on AfricaDB.mdb.

 3.3. .lyr - ArcMap 8.1 layer files.

These three major GIS data sets are supplemented by directories:

  1. PLOT - final printable maps in Adobe PDF format

  2. TEXT - text files for ArcInfo PROJECT command.

Purpose:

The data provide government, geologic community, consultants, and the general public with the  geological

basis for small scale natural resource surveys, exploration, and analysis.

Supplemental_Information:

There are four files in the root directory of the CD-ROM:

1. AFR_AV32.apr - ArcView 3.2 Project file (ESRI). This file is ready to use with ArcView 3.2 software. The file points to source
shapefiles in workspace \Win\AV_32. This project file depicts geology, latitude/longitude graticule, USGS geologic provinces, centerpoints
of oil and gas fields, country boundaries.
2. AFR_AV30.apr - ArcView 3.0 Project file (ESRI). This file is ready to use for ArcView 3.0 users.The file points to source
shapefiles in workspace \Mac\AV_30.
3. AFR_AV32.aep - ArcExplorer 1.1 Project file (ESRI). This file can be viewed with ESRI's freeware program, ArcExplorer
1.1. The file points to source shapefiles in workspace \Win\AV_32. This project file depicts the same shape files as the ArcView project.
ESRI's ArcExplorer 1.1 can be installed from this CD-ROM, or it can be downloaded FREE from the ESRI home page.
<http://www.esri.com>
4. Readme.htm - The CD readme file containing general information about the CD and its use.

 The standard names for ArcInfo and ArcView 3.2 data sets are:
1. geo2_7 - Surficial geology.
2. fld2_7 - Oil and gas fields centerpoints.
3. llf2_7 - Lattitude-Longitude Grid.
4. pol2_7 - Country boundaries.
5. out2_7 - Area outline.
6. prov2_7 - USGS geologic provinces.

"PLOT" directory contains final maps in ADOBE PDF format ready to plot or view. It can be used in case of lack of ArcView
 software to plot final paper maps.
"TEXT" - directory contains supplementary text files.
6. METADATA
  Contains metadata in FGDC and HTML formats. A "project" and several "layer" metadata descriptions are given.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 200112

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -17.64

East_Bounding_Coordinate: 63.36

North_Bounding_Coordinate: 38.3

South_Bounding_Coordinate: -37.1

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: geology

Theme_Keyword: geologic map

Theme_Keyword: geologic age

Theme_Keyword: lithology

Theme_Keyword: oil

Theme_Keyword: gas

Theme_Keyword: ArcView

Theme_Keyword: ArcInfo

Theme_Keyword: digital geologic map

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Africa

Access_Constraints: None

Use_Constraints:

Shape files covering country boundaries contain intellectual property of Environmental Systems Research Institute, Inc. (ESRI),

and are used with permission. Shape files covering oil and gas fields centerpoints contain intellectual property of Petroconsultants

International Data Corporation, and are used with permission. End users are permitted to use these data sets for their own internal

use, including derivative work, but are prohibited from redistributing these data individually or in a derivative work to third parties.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Dr. Thomas Ahlbrandt

Contact_Organization: U.S. Geological Survey

Contact_Position: Project Chief

Contact_Address:

Address_Type: mailing and physical address

Address:

Denver Federal Center, MS 939 P.O.Box 25046

City: Denver

State_or_Province: CO

Postal_Code: 80225

Country: USA

Contact_Voice_Telephone: 303-236-5776

Contact_Facsimile_Telephone: 303-236-8822

Contact_Electronic_Mail_Address: ahlbrandt@usgs.gov

Hours_of_Service: 8 - 5 MST

Browse_Graphic:

Browse_Graphic_File_Name: afr_av32.pdf

Browse_Graphic_File_Description: Adobe Acrobat 5.0 format

Browse_Graphic_File_Type: PDF

Browse_Graphic:

Browse_Graphic_File_Name: afr_av32.aep

Browse_Graphic_File_Description: ESRI's ArcExplorer

Browse_Graphic_File_Type: ArcExplorer project file

Data_Set_Credit:

Digital Geologic Map Compilation in Arc/Info - Feliks Persits

Geologic Attribution - Feliks Persits, Thomas Ahlbrandt, Michelle Tuttle, Ronald Charpentier, Michael Brownfield.

Implementation of Metadata- Feliks Persits

Arcview and ArcExplorer projects - Feliks Persits

Map design and verification - Feliks Persits

Adobe Acrobat design - Kenneth Takahashi

CD-ROM implementation - Feliks Persits

Native_Data_Set_Environment:

Windows NT Version 4.0 (Build 1381) Service Pack 6;

ESRI ArcInfo 8.1.0.415

ESRI ArcGIS Desktop 8.1

ESRI ArcView 3.2

ESRI ArcExplorer 2.0

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Overall accuracy is based on accuracy of general geology coverage. Because all the attributes are of character type, only correctness

of polygon labeling can be provided (see below).

 1. Attribute item "GLG" is abstracted from fill colors and patterns of source map denoting geologic age of surficial outcrops.

   Units colored as land surface water bodies are attributed as "H2O". Sea and ocean are attributed as "Sea". Areas outside of African

   continent are labeled as "oth".

 2. Standard verification of attribute reliability is performed with the Arc/Info command LABELERRORS to find polygons

   without assigned character value or with more than one value. A comparison between color plot and original paper map is

   carried out by on-screen visual examination. The coverages are superimposed on a registered and rectified gray-scale scanned

   image of the original map and inspected. All errors detected in attributes are corrected. 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 background images in ARCEDIT digitizing. Maximum shift of 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 top of original map, maximum error

   did not exceed 3500 m.

Quantitative_Attribute_Accuracy_Assessment:

Attribute_Accuracy_Value: good

Attribute_Accuracy_Explanation:

This is a deductive estimate based on a polygon overlay of a coverage plot and the original materials.

Checks by both the compiler and an independent reviewer identified labeling and classification errors which were corrected.

Any remaining errors are most likely a result of misinterpretation of source data.

Logical_Consistency_Report:

The data set originated from a collection of ARC/INFO coverages that were topologically consistent. The fuzzy tolerance has been

consistent through each processing step (500 m or 0.005 degree). Based on this fuzzy tolerance value, all undershoots and overshoots

were detected and deleted. Execution of Arc/Info CLEAN command indicated the original coverage is topologically clean. Duplicate lines,

overshoots and undershoots, if any, were corrected. All polygons are closed and labeled. Polygons at the edge of the map are closed with

a map outer polygon.

Completeness_Report:

           Several geologic age subdivisions on the original (UNESCO) 1:5,000,000 geologic map were combined into single unit.

 As of May, 2000 generalizations of the original geologic map (UNESCO) were carried out:

 1.  All the Cretaceous units were combined into one.

 2. All the Precambrian subdivisions were combined into one.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Because original geologic maps are of 500 m. accuracy (0.1 mm on paper map of 1:5,000,000 scale), and

scanned images were of 200 dot/inch resolution (0.12 mm on paper),  the fuzzy tolerance for CLEAN

 program in ARC/INFO was set to 500 m. Average positional accuracy can be evaluated as 1000 m or

 twice of the fuzzy tolerance.

Quantitative_Horizontal_Positional_Accuracy_Assessment:

Horizontal_Positional_Accuracy_Value: 1.0 km

Horizontal_Positional_Accuracy_Explanation:

Overall relative position error was estimated by comparing a randomly selected set of locations on the ESRI

World country coverage to the shore line and state boundaries on the final geology coverage. RMS error is

1.0 km (0.2 mm of the original paper map).

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Commission for the Geological Map of the World (CGMW)

Publication_Date: 1990

Publication_Time: unknown

Title: Carte géologique internationale de l'Afrique

Edition: 1987-1990

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: unknown

Issue_Identification: N/A

Publication_Information:

Publication_Place: Paris,France

Publisher: United Nations Educational, Scientific and Cultural Organization (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: date of publication

Source_Citation_Abbreviation: UNESCO map

Source_Contribution:

All the five paper map sheets are used as the sources for the correspondent ARC/INFO coverages.

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_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1996

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Centerpoints of oil and gas fields

Source_Contribution:

Centerpoints of oil and gas fields were reprojected to Mercator projection,

saved as ArcInfo Export files and used as a layer on final ArcGIS ArcMap 8.1 project.

                     fld2_7g - oil and gas Field centerpoints in geographic coordinates

           fld2_7t  - oil and gas Field centerpoints in Mercator projection

           fld2_7.shp - ArcView 3.2 shape file (oil and gas field centerpoints in Mercator projection)

Source_Information:

Source_Citation:

Citation_Information:

Originator: ESRI

Publication_Date: 1992

Publication_Time: unknown

Title: ArcWorld 1:3 million geographic data set.

Edition:

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: ArcWorld

Issue_Identification: ArcWorld 1:3M

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_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1992

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Country boundaries

Source_Contribution:

The external source for country boundaries in ARC/INFO.

 pol2_7g - Geographic coordinates

 pol2_7t - Mercator projection

 pol2_7.shp - ArcView 3.2 shape-file

Process_Step:

Process_Description:

Transparent mylar film was used to extract boundaries of geologic units from paper geologic maps.

Source_Used_Citation_Abbreviation: paper maps

Process_Date: 1996

Process_Time:

Source_Produced_Citation_Abbreviation: Transparent mylar copy

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Person: Dr. Thomas Ahlbrandt

Contact_Position: Project Chief

Contact_Address:

Address_Type: mailing and physical address

Address:

Denver Federal Center, P.O. Box 25046, MS 939

City: Denver

State_or_Province: CO

Postal_Code: 25046

Country: USA

Contact_Voice_Telephone: 303-236-5776

Contact_TDD/TTY_Telephone:

Contact_Facsimile_Telephone: 303-236-8822

Contact_Electronic_Mail_Address: ahlbrandt@usgs.gov

Hours_of_Service: 8 - 5 MST

Contact_Instructions:

Process_Step:

Process_Description:

Scanning mylars on large format Anatech Eagle scanner in binary mode.

Vectorizing binary images in UNIX ArcInfo 7.0.1 to produce ArcInfo coverages by GRIDLINE utility.

Source_Used_Citation_Abbreviation: Mylar scanning

Process_Date: end of 1996

Process_Time:

Source_Produced_Citation_Abbreviation: ArcInfo coverages from binary images.

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Ronald. Charpentier

Contact_Position: Senior Geologist

Contact_Address:

Address_Type: mailing and physical address

Address:

Denver Federal Center, P.O. Box 25046, MS 939

City: Denver

State_or_Province: CO

Postal_Code: 80225

Country: USA

Contact_Voice_Telephone: 303-236-5766

Contact_TDD/TTY_Telephone:

Contact_Facsimile_Telephone: 303-236-8822

Contact_Electronic_Mail_Address: charpentier@usgs.gov

Hours_of_Service: 8 - 5 MST

Contact_Instructions:

Process_Step:

Process_Description:

Scanning original paper maps on a large format Anatech Eagle scanner in gray-scale mode.

Source_Used_Citation_Abbreviation: Paper maps

Process_Date: end of 1997

Process_Time:

Source_Produced_Citation_Abbreviation: Gray-scale images

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Feliks Persits

Contact_Position: GIS Contractor

Contact_Address:

Address_Type: mailing and physical address

Address:

Denver Federal Center, P.O. Box 25046, MS 939

City: Denver

State_or_Province: CO

Postal_Code: 80225

Country: USA

Contact_Voice_Telephone: 303-236-3612

Contact_TDD/TTY_Telephone:

Contact_Facsimile_Telephone: 303-236-8822

Contact_Electronic_Mail_Address: fpersits@usgs.gov

Hours_of_Service: 8 - 5 MST

Contact_Instructions:

Process_Step:

Process_Description:

Geologic age attributes were assigned to ArcInfo polygon coverages

Source_Used_Citation_Abbreviation: ArcInfo coverages from binary images

Process_Date: 1996

Process_Time:

Source_Produced_Citation_Abbreviation: Attributed ArcInfo coverages from binary images

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Ronald Charpentier

Contact_Organization: U.S. Geological Survey

Contact_Address:

Address_Type: mailing and physical address

Address:

Denver Federal Center, P.O. Box 25046, MS 939

City: Denver

State_or_Province: CO

Postal_Code: 80225

Country: USA

Contact_Voice_Telephone: 303-236-5766

Contact_Electronic_Mail_Address: charpentier@usgs.gov

Hours_of_Service: 8-5 MST

Process_Step:

Process_Description:

ArcInfo coverages from binary images were transformed to Transverse Mercator projection

with central meridian of 16 E and scale factor at central meridian equal to 0.995

Source_Used_Citation_Abbreviation: Attributed ArcInfo coverages

Process_Date: 1996

Process_Time:

Source_Produced_Citation_Abbreviation:

Projected ArcInfo coverages from binary images

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Feliks Persits

Contact_Position: GIS Contractor

Contact_Address:

Address_Type: mailing and physical address

Address:

Denver Federal Center, P.O. Box 25046, MS 939

City: Denver

State_or_Province: CO

Postal_Code: 80225

Country: USA

Contact_Voice_Telephone: 303-236-3612

Contact_TDD/TTY_Telephone:

Contact_Facsimile_Telephone:

Contact_Electronic_Mail_Address: fpersits@usgs.gov

Hours_of_Service: 8-5 MST

Contact_Instructions:

Process_Step:

Process_Description:

Gray-scale images were georeferenced by ArcInfo REGISTER and RECTIFY utilities

by using projected ArcInfo coverages from binary images.

Source_Used_Citation_Abbreviation: Gray-scale images

Process_Date: 1997

Process_Time:

Source_Produced_Citation_Abbreviation: Georeferenced gray-scale images

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Feliks Persits

Contact_Organization: U.S. Geological Survey

Contact_Position: GIS Contractor

Contact_Address:

Address_Type: mailing and physical address

Address:

Denver Federal Center, P.O. Box 25046, MS 939

City: Denver

State_or_Province: CO

Postal_Code: 80225

Country: USA

Contact_Voice_Telephone: 303-236-3612

Contact_TDD/TTY_Telephone:

Contact_Facsimile_Telephone: 303-236-8822

Contact_Electronic_Mail_Address: fpersits@usgs.gov

Hours_of_Service: 8 - 5 MST

Contact_Instructions:

Process_Step:

Process_Description:

Verification and correction of line work and geologic attributing of projected ArcInfo coverages by

using georeferenced gray-scale images as backdrop in ArcInfo ArcEdit 7.0.2

Source_Used_Citation_Abbreviation: Projected ArcInfo coverages

Process_Date: 1997

Process_Time:

Source_Produced_Citation_Abbreviation: Corrected ArcInfo coverages

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Feliks Persits

Contact_Organization: U.S. Geological Survey

Contact_Position: GIS Contractor

Contact_Address:

Address_Type: mailing and physical address

Address:

Denver Federal Center, P.O. Box 25046, MS 939

City: Denver

State_or_Province: CO

Postal_Code: 80225

Country: USA

Contact_Voice_Telephone: 303-236-3612

Contact_TDD/TTY_Telephone:

Contact_Facsimile_Telephone: 303-236-8822

Contact_Electronic_Mail_Address: fpersits@usgs.gov

Hours_of_Service: 8 - 5 MST

Contact_Instructions:

Process_Step:

Process_Description:

Corrected ArcInfo coverages were projected to geographic coordinates and to Mercator

 projection with central meridian of 25⁰ E by ArcInfo PROJECT utility.

Source_Used_Citation_Abbreviation: Corrected ArcInfo coverages

Process_Date: 1997

Process_Time:

Source_Produced_Citation_Abbreviation:

Final ArcInfo coverages in Mercator projection and in geographic coordinates.

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Feliks Persits

Contact_Position: GIS Contractor

Contact_Address:

Address_Type: mailing and physical address

Address:

Denver Federal Center, P.O. Box 25046, MS 939

City: Denver

State_or_Province: CO

Postal_Code: 80225

Country: USA

Contact_Voice_Telephone: 303-236-3612

Contact_TDD/TTY_Telephone:

Contact_Facsimile_Telephone:

Contact_Electronic_Mail_Address: fpersits@usgs.gov

Hours_of_Service: 8-5 MST

Contact_Instructions:

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: 11000

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.001

Longitude_Resolution: 0.001

Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: WGS84

Ellipsoid_Name: WGS84

Semi-major_Axis: 6378137

Denominator_of_Flattening_Ratio: 0.996647

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label:

ArcInfo coverage /cov_geo/"geo2_7g" (geographic coordinates)

 ArcInfo coverage /cov_tran/"geot2_7t" (Mercator projection)

 ArcView shape file /AV_32/"geo2_7g.shp" ArcGIS 8.1 layer file /Arc_81/"geo.lyr"

Entity_Type_Definition: Surface Geology

Entity_Type_Definition_Source: U.S.Geological Survey

Detailed_Description:

Entity_Type:

Entity_Type_Label:

ArcInfo coverage /cov_geo/"prov2_7g" (geographic coordinates)

 ArcInfo coverage /cov_tran/"prov2_7t" (Mercator projection)

 ArcView shape file /AV_32/"prov2_7g.shp" ArcGIS 8.1 layer file /Arc_81/"provs.lyr"

Entity_Type_Definition: Geologic Province

Entity_Type_Definition_Source: U.S.Geological Survey

Detailed_Description:

Entity_Type:

Entity_Type_Label:

ArcInfo coverage /cov_geo/"fld2_7g" (geographic coordinates)

 ArcInfo coverage /cov_tran/"fld2_7t" (Mercator projection)

 ArcView shape file /AV_32/"fld2_7g.shp" ArcGIS 8.1 layer file /Arc_81/"fields.lyr"

Entity_Type_Definition: Centerpoint of oil/gas field

Entity_Type_Definition_Source: Petroconsultants International Data Corporation

Detailed_Description:

Entity_Type:

Entity_Type_Label:

ArcInfo coverage /cov_geo/"pol2_7g" (geographic coordinates)

 ArcInfo coverage /cov_tran/"polt2_7t" (Mercator projection)

 ArcView shape file /AV_32/"pol2_7g.shp"

 ArcGIS 8.1 layer file /Arc_81/"cntry.lyr"

Entity_Type_Definition: Country boundary

Entity_Type_Definition_Source: ESRI

Detailed_Description:

Entity_Type:

Entity_Type_Label:

ArcInfo coverage /cov_geo/"llf2_7g" (geographic coordinates)

 ArcInfo coverage /cov_tran/"llft2_7t" (Mercator projection)

 ArcView shape file /AV_32/"llf2_7g.shp"

 ArcGIS 8.1 layer file /Arc_81/"LatLong.lyr"

Entity_Type_Definition: Latitude-Longitude Grid

Entity_Type_Definition_Source: ESRI

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey, Central Energy Team, Energy Resources Program

Contact_Person: Dorothy Tanti

Contact_Position: Team Secretary

Contact_Address:

Address_Type: mailing and physical address

Address:

U.S.Geological Survey Box 25046 MS 939 Building 25 Denver Federal Center

City: Denver

State_or_Province: CO

Postal_Code: 80225

Country: U.S.A.

Contact_Voice_Telephone: 303.236.1647

Contact_Electronic_Mail_Address: eteamdisks@usgs.gov

Hours_of_Service: 8:00 am - 4:00 pm MST

Resource_Description:

Distribution_Liability:

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name:

ArcInfo coverage ArcView shape file ARC/INFO Export format

 ARC/INFO Generate format ASCII file, formatted for text attributes

 SDTS Spatial Data Transfer Standard (Federal Information Processing Standard 173)

Digital_Transfer_Option:

Offline_Option:

Offline_Media: CD-ROM

Recording_Format: ISO 9660

Compatibility_Information:

ISO 9660 format allows the CDROM to be read by most computer operating systems.

Fees: none

Ordering_Instructions:

To order CD-ROM contact USGS Earth Science Information Center 1-800-USA-MAPS

Metadata_Reference_Information:

Metadata_Date: 20010327

Metadata_Contact:

              Contact_Information:

                         Contact_Organization_Primary:
                                    Contact_Organization: U.S. Geological Survey
                                    Contact_Person: David A. Ferderer
                                    Contact_Position: Data library manager, Central Energy Resources Team
                         Contact_Address:
                                    Address_Type:mailing and physical address
                                   Address: U.S. Geological Survey, MS 939 Box 25046 Denver Federal Center
                                   City: .Denver
                                   State_or_Province: CO.
                                   Postal_Code: 80225-0046
                                   Contact_Voice_Telephone: (303) 236-3611
                                   Contact_Facsimile_Telephone: (303) 236-8822
                                   Contact_Electronic_Mail_Address: dferdere@usgs.gov
                                   Hours_of_Service: 8 am. to 4 pm. MST

Metadata_Standard_Name:

FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

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U.S. Department of the Interior | U.S. Geological Survey URL: <http://pubs.usgs.gov/of/1997/ofr-97-470/OF97-470A/Afr_main.htm> Contact: Energy Program Inquiries Questions or Assistance: Contact USGS Page Last Modified: Fri Jul 16 15:53 EDT 2004