U. S. Geological Survey Open-File Report 2004-1229B

COLOR SHADED-RELIEF IMAGES OF THE FINAL MAGNETIC DATA 

Color shaded-relief images of the final magnetic data are available
in two formats for each survey area. TIF images show latitude/
longitude tick marks only; they have no extra annotation so that they
can be used with other overlays.  PDF images have scales and
text for map plot purposes.  All the formats were derived originally from
color shaded-relief displays created by ERMAPPER, using a sun azimuth of
270 degrees (west) and sun elevation of 60 degrees. Two files are shaded using
a sun azimuth of 90 degrees east and 90 degrees west. Color scales are shown
on the PDF images, and differ from image to image. The types of image 
files and their uses are described briefly below.


IMAGE TYPE        IMAGE FILES
-------------     -----------------------------------------------------
TIF  (*.tif)      bmagimg.tif
 and geotif       brcwimg.tif  (shaded from the west)
 header (*.tfw)   brceimg.tif  (shaded from the east)
                  bpdhgimg.tif
                  brchgimg.tif
                  b83rcwimg.tif  (shaded from the west)
                  b83rceimg.tif  (shaded from the east)


EXPLANATION
Tagged Image Format file with tick marks as the only annotation.
Without the header file, the tif file can be imported into many
standard graphics programs.  The header file provides geographic
information (geotif) for direct import into ARC/INFO and ARC/VIEW.
The .tfw file must be in the same directory as the .tif file.


IMAGE TYPE        IMAGE FILES
-------------     -----------------------------------------------------
PDF  (*.pdf)      bmagprn.pdf
                  brdrprn.pdf
                  brcwprn.pdf
                  brceprn.pdf
                  bpdhgprn.pdf
                  brchgprn.pdf
                  
     
EXPLANATION
Portable Document Format file for Adobe* Acrobat readers, annotated
with tick marks, map scale, color scale bar, and brief explanation.
All pdf images have been scaled at 1:100,000.  The radar image (brdrprn.pdf)
shows flight-line locations and line numbers.

*Trade names are used for descriptive purposes only.