Generalized Geology of the World and Linked Databases, Open File 2915d

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Geological Survey of Canada
Publication_Date: 1995
Title:
Generalized Geology of the World and Linked Databases, Open File 2915d
Geospatial_Data_Presentation_Form: Vector digital data
Publication_Information:
Publication_Place: Ottawa, Canada
Publisher: Geological Survey of Canada
Online_Linkage: https://mrdata.usgs.gov/geology/world/
Description:
Abstract:
The Generalized Geology of the World is a highly simplified digital geological data set composed of geographically referenced rock unit patchworks and fault lines which can be combined with tables of descriptive data. The latter, hereafter referred to as attribute tables, includes broadly classified age, main rock or fault type, and name information.
Purpose:
The purpose of this data set is threefold: (1) to provide the basic context for the display of global distribution patterns of geoscientific data; (2) to allow the preparation of simple, global-scale, customized thematic maps and page-sized diagrams using a range of GIS overlay and logical selection techniques on the currently available data, alone or in combination with other data; and (3) to provide a basic geological data set which can be experimented with before designing other regional geological GIS products.

As a note of caution, displays from this data set are not valid enlarged to scales much larger than 1:35 million, and should NOT be used for quantitative analyses of any sort. The generalization level is extremely high, as discussed in the generalization section below. GIS overlay of additional data should be used only with careful consideration of the level of generalization. Conceptually, overlain data should be as highly generalized as the age and rock type and fault background layers, and the product of the overlay envisaged as a global-scale visual pattern rather than a quantitative correlation.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1995
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -180.0
East_Bounding_Coordinate: 180.0
North_Bounding_Coordinate: 90.0
South_Bounding_Coordinate: -90.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Geology
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: World
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 1995
Access_Constraints: none
Use_Constraints: none
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Geological Survey of Canada
Contact_Address:
Address_Type: mailing and physical address
Address: 601 Booth Street
City: Ottawa
State_or_Province: Ontario
Postal_Code: K1A 0E8
Country: Canada
Native_Data_Set_Environment:
ArcInfo 8.1 ArcView 3.2a Windows 2000
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The accuracy of the Generalized Geological Map of the World attributes is unknown according to the metadata from the Geological Survey of Canada (GSC).
Logical_Consistency_Report: Chain-node topology present
Completeness_Report:
None of the data from the Generaized Geological data was omitted.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The horizontal accuracy of the digital data was provided by GSC and is claimed to be no better than the original source data 1:35,000,000.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: The vertical accuracy is unknown.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: ESRI
Publication_Date: 1995
Title: Generalized Geological Map of the World and Linked Databases
Geospatial_Data_Presentation_Form: Vector digital data
Source_Scale_Denominator: 35000000
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1995
Source_Currentness_Reference: Publication date
Source_Citation_Abbreviation: GSC
Source_Contribution:
The preparation of the digital data and the Generalized Geology of the World hard copy map was accomplished under the auspices of the Geoscience Information and Communication Division, Geological Survey of Canada, particularly the Digital Cartography Section, and the Mineral Resources Division.
Process_Step:
Process_Description:
The Generalized Geology datasets (ESRI export files) were imported into ArcInfo 8.1 and seven coverages were created (Rock Unit Polygons), namely: Africa/Arabian, Antarctica, Asia, Australia, Europe, North America, South America. Using the unique coverage id field (field relate) the coverage attributes were linked to each data table for rock units. The seven coverages were then combined into a single world geology coverage and this dataset was converted to an ArcView 3.2 shapefile.
Process_Date: 2001
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Tom Kress
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 12201 Sunrise Valley Dr.
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Electronic_Mail_Address: thkress@usgs.gov
Contact_Voice_Telephone: 703-648-6328
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-Polygon composed of chains
Point_and_Vector_Object_Count: 7562 polygons
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.000464
Longitude_Resolution: 0.000464
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6370997 meters
Denominator_of_Flattening_Ratio: 294.98
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview: Fullname : Age at the era level and Main Rock Type
Entity_and_Attribute_Detail_Citation: Geological Survey of Canada Open File 2915d
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Geological Survey of Canada
Contact_Organization: GSC
Contact_Address:
Address_Type: Mailing address
Address: 601 Booth Street
City: Ottawa
State_or_Province: Ontario
Postal_Code: K1A 0E8
Country: Canada
Distribution_Liability:
The U.S. Geological Survey (USGS) provides this vector data "as is." The USGS makes no guarantee or warranty concerning the accuracy of information contained in the image data. The USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although this data has been processed successfully on computers at the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of this data on any other system, nor does the fact of distribution constitute or imply any such warranty.
Metadata_Reference_Information:
Metadata_Date: 20180307
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Peter N Schweitzer
Contact_Organization: USGS Eastern Mineral and Environmental Resources Science Center
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing address
Address: 12201 Sunrise Valley Drive
City: Reston
State_or_Province: VA
Postal_Code: 20192-0002
Country: USA
Contact_Voice_Telephone: 703-648-6533
Contact_Facsimile_Telephone: 703-648-6252
Contact_Electronic_Mail_Address: pschweitzer@usgs.gov
Metadata_Standard_Name: FDGC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998


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