Mars Geologic Map of the Elysium Region GIS Conversion
The original map document was created in 1992 as a Mercator projection and is based on older Viking images. It was scanned and georeferenced into ArcGIS in two parts that are located in Elysium_5M_Viking/Raster/Elysium_clip3_RECTIFY and Elysium_clip4_RECTIFY. An uncontrolled THEMIS 100 mpp basemap and a MOLA hillshade were used for georeferencing. Control point links can be found in Elysium_5M_I2147_Viking/Raster/Elysium_I2147_clip3_links and Elysium_I2147_clip4_links. The geologic structures mapped on the original map document were not digitized or converted into GIS.
References:
Kenneth L. Tanaka, Mary G. Chapman, and David H. Scott, 1992, Geologic map of the Elysium region of Mars: U.S. Geological Survey Investigations Series I–2147, scale 1:5000000, http://pubs.er.usgs.gov/publication/i2147
- Mimetype
- application/zip
- Filename
- Mars_Elysium_5M_I2147_Viking_GIS.zip
- Publisher
- USGS Astrogeology Science Center
- Publication Date
- 18 July 2016
- Author
- Michelle Barton
- Originator
- Kenneth L. Tanaka, Mary G. Chapman, David H. Scott
- Group
- MRCTR
- Added to Astropedia
- 12 August 2016
- Modified
- 30 May 2019
General
- Purpose
GIS conversion of the original 1992 published map.
- Geospatial Data Presentation Form
- Geologic Map
- Edition
- 1
- Native Data Set Environment
- ESRI Arcinfo, GDAL
- Color
- Color
Keywords
- System
- Mars
- Target
- Mars
- Theme
- Geographic Information System (GIS), Geology, Photogeology
- Mission
- Viking
- Instrument
- VIS
- Search Terms
- Geology, Elysium, Mars, GIS
Contact and Distribution
- Access Constraints
- None
- Use Constraints
- None
Data Status and Quality
- Time Period of Content Begin
- 1 May 2016
- Time Period of Content End
- 18 July 2016
- Currentness Reference
- Publication date
- Progress
- Complete
- Update Frequency
- None planned
- Completeness Report
No structure was digitized.
- Process Date
- 18 July 2016
- Process Description
Original map contacts (approximate and certain) were digitized with a streaming tolerance of 1500 meters at a 1:750000 scale. The polylines were then converted into polygons which were attributed with the same geologic symbols and colors as shown on the original scanned map. There were no revisions made to the preexsiting geologic contacts in order to preserve the original documentation of the units.
- Horizontal Positional Accuracy Report
- Unknown
- Vertical Positional Accuracy Report
- Unknown
Lineage
- Source Originator
- U.S. Geological Survey
- Source Publication Date
- 1 June 1992
- Source Title
- Geologic map of the Elysium region of Mars: U.S. Geological Survey Investigations Series I–2147
- Source Online Linkage
- http://pubs.er.usgs.gov/publication/i2147
- Type of Source Media
- Paper
- Attribute Accuracy Report
- Unknown
Geospatial Information
- Feature Name
- Elysium
- Minimum Latitude
- 47.5
- Maximum Latitude
- 0
- Minimum Longitude
- 112.5
- Maximum Longitude
- 180
- Direct Spatial Reference Method
- Vector
- Object Type
- Polygon
- Quad System
- Mars 1:5M
- Quad Name
- MC-2, MC-6, MC-7, MC-8, MC-14, MC-15, MC-16, MC-22, MC-23
- Radius A
- 3396190
- Radius C
- 3396190
- Control Net
- Viking
- Horizontal Coordinate System Units
- Meters
- Map Projection Name
- Mercator
- Latitude Type
- Planetocentric
- Longitude Direction
- Positive East
- Longitude Domain
- -180 to 180