Geology and Resource Assessment of the Venezuelan ... - USGS

1) ARC/INFO Export
GRAPHICS FORMATS AVAILABLE ON THE DISC
These coverages are used for spatial analysis, derivative products, and to-scale
plots on the Versatec electrostatic plotter. Compatible with Environmental Systems
Research Institute's ARC/INFO Version 6.1.2 or later. The files are simple text and
should be transmitted in ASCII mode except for the *.gra plot files, which are binary.
2) ARC/INFO Graphics, Adobe Illustrator, Portable Document Format (PDF), and
Postscript formats
The geologic map in ARC/INFO Graphics, Adobe Illustrator, PDF, and Postscript
formats are located in directory “arcunix7/vz”. All are derived from the ARC/INFO
“.gra” file using the POSTSCRIPT command.
3) ArcView format
ArcView is an easy-to-use graphics display package by the authors of
ARC/INFO. This CD-ROM contains ArcView coverages for both UNIX and Microsoft
Windows 3.x. It also contains export files that can be copied to other ARC/INFO
platforms and imported to ArcView. ArcView 1 keys are in the “arcunix6” directory.
The ArcView 3 key for the “vz” directory is in the “arcunix7”directory.
4) U.S. Geological Survey Digital Line Graph (DLG) Optional format (U.S. Geological
Survey, 1986, 1987, and 1989).
The DLG Optional format is a U.S. Geological Survey standard for storing
topologically structured files. It results in a compact ASCII file that is compatible with
a variety of graphics software. Only the geology, faults, and correlation chart layers
were converted to this format. The polygons and arcs are tagged, but the text
annotation is not present because the DLG conversion software does not support
annotation.
5) Tagged image file format (TIFF)
The geologic map and mineral deposit maps from Bulletin 2062 were scanned
on a color scanner and saved as TIFF files. The larger files are compressed under
PKZIP.