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U.S. Geological Survey Data Series 551

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This digital database was originally compiled in ArcInfo coverage format with ArcInfo version 7.2.1. The database was upgraded for this release to ArcGIS 9.3.1 personal geodatabase format and consists of feature datasets containing geologic map feature classes for each of the three printed map plates (see PLOTFILES section) from U.S. Geological Survey Professional Paper 729-G. ArcGIS-compatible GIS software is therefore required to use the files of this database. The geodatabase is stored in a single zipped folder (PP729-G.zip) in this release for ease of transfer. The scale of the source maps limits the spatial resolution (scale) of the database to 1:125,000 or smaller for Plates 1 and 2, and 1:500,000 or smaller for Plate 3. Available ArcGIS feature classes, organized by Plate 1, 2, and 3 feature datasets are described below:
ArcGIS
feature class		 Description
PLATE 1 Geologic Map of the Yellowstone Plateau Area
 drill_holes Drill hole locations (points)
 geologic_lines Contacts and faults (lines)
 geologic_polys Rock units (polygons)
 hyd_alteration Areas of hydrothermal alteration (polygons)
 lava_forms Lava-flow fronts and forms (lines)
 sample_locs Sample locations (points)
 strike_dip Strike and dip measurement locations and values (points)
 volcanic_vents Volcanic vents (points)
 YNP_border Yellowstone National Park boundary (lines)
PLATE 2 Geologic Map of the Island Park Area, Yellowstone Region
 geologic_lines2 Contacts and faults (lines)
 geologic_polys2 Rock units (polygons)
 sample_locs2 Sample locations (points)
 volcanic_vents2 Volcanic vents (points)
PLATE 3 Upper Cenozoic Geologic Map, Yellowstone Plateau Volcanic Field
 geologic_lines3 Contacts and faults (lines)
 geologic_polys3 Rock units (polygons)

Download PP729-G.zip containing the digital database.

Federal Geographic Data Committee (FGDC) metadata are available for the digital geologic map plates (Plate 1, Plate 2, and Plate 3) in text format.
INTRODUCTION
DATA
PLOTFILES
LINKS
2011

U.S. Department of the Interior
U.S. Geological Survey