DESCRIPTION OF THE DIGITAL DATABASE FOR Geologic Map of MTM -30247, -35247, and -40247 Quadrangles, Reull Vallis Region of Mars, Scale 1:1,000,000 USGS SCIENTIFIC INVESTIGATIONS MAP 3245 Reference: Scott C. Mest and David A. Crown, 2014, Geologic Map of MTM -30247, -35247 and -40247 Quadrangles, Reull Vallis Region of Mars: U.S. Geological Survey Scientific Investigations Map SIM 3245, Scale 1:1,000,000, http://pubs.usgs.gov/sim/3245 INTRODUCTION Mars Transverse Mercator (MTM) -30247, -35247, and -40247 quadrangles cover a portion of southern Hesperia Planum and the highlands of eastern Promethei Terra, east of the Hellas basin. The map area (lat 27.5-42.5ˇ S., long 110-115ˇ E.) consists of cratered ancient highland materials of moderate relief, isolated knobs and massifs of rugged mountainous materials, extensive tracts of plains, and surficial deposits. Waikato and Reull Valles extend through plains and highland terrains. Regional slopes are generally to the southwest toward the Hellas basin, but local slopes (for example, highlands to plains) dominate the landscape. All GIS data are in Transverse Mercator projection using Central Meridian = 110.0 E and the Mars 2000 geographic coordinate system(GCS_Mars_2000_Sphere, 3396190.0 radius). Units are in meters. GEOLOGIC CONTENT (contents of "ESRI_FileGeodatabase" Folder, SIM3245_geodatabase.gdb) This ArcGIS geodatabase contains one feature dataset (SIM3245_ReullVallis_Layers) with the following features: SIM3245_ReullVallis_Contacts - Line feature class, contains a "TYPE" field for the geologic unit and map boundaries including symbol types: Certain, Approximate, Inferred. "Shape_Length" is the Transverse Mercator calculated length of the feature in meters. SIM3245_ReullVallis_Geology - Polygon feature class, geologic unit polygon feature class. Contains a "UNIT_SYM" field denoting the unit abbreviated name and "TYPE" a short description. "Shape_Area" is the Transverse Mercator calculated area of the polygon in m^2. SIM3245_ReullVallis_Structures - Structural layer. Contains a "TYPE" field denoting the structure type including "Crater rim", "Ridge, degraded", and "Ridge, pristine", "Scarp". "Shape_Length" is the Transverse Mercator calculated length of the feature in meters. SIM3245_ReullVallis_Surfaces - Structural layer. Contains a "SurfaceType" field denoting the type including "knobby terrain" and "secondary craters". "Shape_Area" is the Transverse Mercator calculated area of the polygon in m^2. SIM3245_ReullVallis_Valleys - Structural layer. Contains a "TYPE" field denoting the valley type including "Channel" and "Gully". "Shape_Length" is the Transverse Mercator calculated length of the feature in meters. SIM3245_ReullVallis_Craters - Contains a "DIAM_km" field with the diameter of the crater in and kilometers "UNIT_SYM" field denoting the intersecting geologic unit. BASE MAP CONTENT Geologic mapping at 1:1,000,000 scale from analysis of images—including Mars Observer (MO) Thermal Emission Imaging System (THEMIS) daytime infrared (IR) and visible (VIS), Mars Reconnaissance Orbiter (MRO) High Resolution Imaging Science Experiment (HiRISE) and Context Camera (CTX), Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC), and Viking Orbiter (VO) images—and MGS Mars Orbiter Laser Altimeter (MOLA) topographic data. DIGITAL DATABASE AND METADATA PACKAGE (SIM3245_database.zip) The geologic map files, basemaps, and supportive files are included in the database package, as described below: "SIM3245_ReullVallis_1M_GIS" directory -------------------------------------------- Files Description --------------------------------------------------------------------- --------------------------------------------------------------------- sim3245_readme.txt This readme file. sim3245_metadata.txt Text-format FGDC-style metadata for the database package sim3245_metadata.xml XML-format FGDC-style metadata for the database package SIM3245_ReullVallis_1M_ArcMap10.mxd ArcGIS (version 10.0) project "Basemaps" basemap directory -------------------------------------------- ReullVallis_DC_THEMIS.png - THEMIS IR basemap image (by ASU/USGS) ReullVallis_PubBase.png - Viking based MDIM2.1 basemap image (by USGS) ReullVallis_MOLA128.tif - MOLA DEM at 128ppd (463m/p, by Goddard) ReullVallis_Shade_MOLA128.tif - shaded relief version of the MOLA DEM (by Goddard/USGS). Vector directories -------------------------------------------- "SIM3245_Geodatabase.gdb" - ArcMap 10.0 versioned File Geodatabase in Tranverse Mercator, centerl meridian = 110.0E, Mars 2000 Sphere. "SIM3245_Shapefiles" - This directory contains GIS shapefiles exported from the ArcGIS geodatabase described above using the same Transverse Mercator projection. As such, the names and descriptions for each shapefile are identical to the content of the included geodatabase. See above "GEOLOGIC CONTENT" for details. Users of the database package may wish to download the PDF version of the map for the Description of Map Units. The material described above is available on the World Wide Web at http:/pubs.usgs.gov/sim/3245 ZIP FILES The files described above are packaged within a ZIP file. Utilities to uncompress ZIP files are available for most operating systems and may be found readily with a simple web search. DIGITAL DATABASE FORMAT The digital information compiled in this report used v. 10, a commercial Geographic Information System produced by Environmental Systems Research Institute, Redlands, California. OBTAINING HARD-COPY OF SIM 3245 USGS Information Services Box 25286 Denver Federal Center Denver, CO 80225-0046 (303) 202-4200 1-888-ASK-USGS Email: infoservices@usgs.gov