Geologic Map of the MTM -85280 Quadrangle, Plaum Australe Region of Mars
GIS version
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Rationale and Intent:
This geologic map was originally authored by Ken Herkenhoff in 1998, and has been digitized as a GIS product for public release.  Please use the original citation:

Herkenhoffs, K., 1998, Geologic map of the MTM 85280 quadrangle, Planum Australe region of Mars: U.S. Geological Survey Geologic Investigations Series I2595. (Available at https://pubs.usgs.gov/imap/i2595/.)

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Project specific datasets are projected (meters).
Projection: South Polar Stereographic 
            Latitude of Origin: -90.0
using the geographic coordinate system "Mars 2000"
Major and minor axes are 3396190.0 m
Also included is the *.prj file for the Mars 2000 Sphere GCS.  They are all located in ...\CoordinateSystems.

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File geodatabase contains one feature dataset:
1.) I2595_SPolar_Stereographic
    a) I2595_GeoContacts (polyline file)
    b) I2595_GeoUnits (polyline file)
    c) I2595_Boundary (polyline file)

These feature classes are grouped into Mapping Layers in the ArcMap project.  They are projected as Lambert Conformal Conic and should house all digitized map information.

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Raster layers are included in the folder I2694_5M_Hellas\Rasters, and include:
1.) I2595_crop.tif (scanned, georeferenced original map)

These feature classes are grouped into Rasters in the ArcMap project.  They are projected as Lambert Conformal Conic.

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Symbols are applied to each of the included feature classes. These symbols are adapted from USGS Open File Report 99-430 (Digital Cartographic Standard for Geologic Map Symbolization). These can be viewed and downloaded at http://pubs.usgs.gov/of/1999/of99-430/

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To add/remove symbols, open ArcMap project, right-click the feature class of interest, click Properties, and click Symbology tab. Highlight the symbol to alter and then click Remove or double-click to alter.  Each feature class has an associated *.lyr file that houses the symbologies.  Click import on the Symbology tab and navigate to the appropriate *.lyr to return to the full symbol list.

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We suggest that all work is contained within the *\Working folder. Create sub-folders as necessary to house relevant GIS data and map data.
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Comments are encouraged in order to assimilate beneficial GIS-based tools, datasets, and mapping approaches for future mappers.

contact:

Trent Hare
thare@usgs.gov

Jim Skinner
jskinner@usgs.gov

Corey Fortezzo
cfortezzo@usgs.gov

Marc Hunter
mahunter@usgs.gov