Astropedia - Mars Geologic Map of the Elysium Region GIS Conversion

Mars Geologic Map of the Elysium Region GIS Conversion

Primary Authors: Michelle Barton
Originators: Kenneth L. Tanaka, Mary G. Chapman, David H. Scott
Publisher: USGS Astrogeology Science Center
Publication Date: 2016-07-18
Abstract: 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 Iâ2147, scale 1:5000000, http://pubs.er.usgs.gov/publication/i2147
Purpose: GIS conversion of the original 1992 published map.

Format: Geologic Map
Access Constraints: None
Access Scope: MRCTR
Use Constraints: None
Edition: 1
Native Data Set Environment: ESRI Arcinfo, GDAL
Astrogeology Theme: Geographic Information System (GIS), Geology, Photogeology
Temporal Keywords: Amazonian, Hesperian, Noachian
Mission Names: Viking
Instrument Names: VIS
Online Package Link: https://astrogeology.usgs.gov/search/map/mars_geologic_map_of_the_elysium_region_gis_conversion
External File Size: 452285291
Online File Link: http://astropedia.astrogeology.usgs.gov/download/Mars/Geology/Mars_Elysium_5M_I2147_Viking_GIS.zip
Contact Address: 2255 N. Gemini Drive
Contact City: Flagstaff
Contact State: AZ
Contact Postal Code: 86001
Contact Email: astroweb@usgs.gov

Time Period of Content (start): 2016-05-01
Time Period of Content (stop): 2016-07-18
Currentness Reference: Publication date
Progress: Complete
Update Frequency: None planned
Completeness Report: No structure was digitized.
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.

Process Date: 2016-07-18
Source Title: Geologic map of the Elysium region of Mars: U.S. Geological Survey Investigations Series Iâ2147
Source Online Linkage: http://pubs.er.usgs.gov/publication/i2147
Attribute Accuracy Report: Unknown
Horizontal Positional Accuracy Report: Unknown
Vertical Positional Accuracy Report: Unknown