GIS Geologic Map Finalization:

“overview of layers that should be getting close to final”

June 2012, Planetary Mappers Meeting

Original ArcMap Geologic GIS Project -generated by USGS for mapper

GeoDatabase – older projects may have a different extension

Example used: Tooting Crater, Mars, 1:200k, Peter J. Mouginis-Mark, University of HawaiiSubmitted for publication

Layers you should haveGIS Raster Data• Includes the USGS-created (or other) base map• Include the MOLA DEM and shaded relief• All high-resolution datasets used while mapping should be excluded,down sampled, or included asfigures, footprint files, or supplemental data

Layers you should haveGIS vector features (near final)• Contacts/Linear Features (lines)• Contacts should be snapped to other contacts• Attributes defined in the table and displayed with unique symbology• Symbology closely follow the FGDC Cartographic Standards

• Structural Layers (lines)• Channels, crest of crater rim• Symbology also follows FGDC

• Location or Point Features• Uniquely attributed and symbolized• Labeled if necessary• Sized so they can be seen at the printable map scale

Layers you should haveGIS vector features (near final)•Geologic Units

building polygons is an iterative process. As your map progresses, it is a good idea to have been testing unit (polygon) creation several times.

Layers you should have• Contacts/Linear Features (lines)

Layers you should have• Structural Layers (lines)

Layers you should have• Location or Point Features, e.g. secondary craters

Layers you should have•Overlay polygons, e.g. crater clusters

Layers you should have•Overlay polygons, e.g. ejecta facies

Layers you should have•Overlay polygons, e.g. NoData coverage

Goal: layers to build•Geologic Units