The following are comments by Jeff Silkwood from his transmittal letter
to the USGS.  These are followed by comments made by Greg Green on this
data set.
............
October 25, 1996


The ARC/EXPORT files I'm sending you are:

    absaroka.e00 -- polygon coverage of lithology
                    the map units are under the heading
                    IGDS-LAYER (this started as an 
                    Intergraph .DGN file)
    faults.e00 -- a line coverage of thrust and normal
                  faults IGDS-LAYER = 'FAULT' or 'THRUST'
                  inferred or hidden features are labeled
                  'XFAULT' and 'XTHRUST'
    dikes.e00 -- lines which should be polygons (units
                 too narrow to plot as polys at this 
                 scale)


Text files are:

    absaroka.aml -- aml to create a plotfile (.gra) of the map
    geol.key -- the legend text (used by the aml)
    absaroka.lut -- a text copy of the look up table
                    used with the hpispp shadeset
                    (in case it doesn't export in INFO)
    geol_sym.lin -- a LINESET used by the aml (it plots
                    the thrust symbols on the correct side
                    of the line--I hope.)

my best guess for the map Projection is State Plane, southern zone--
you will have to get a hold of Brad Van Gosen to find out the projection
of the green line mylar copy he sent me, it doesn't appear on the map.
use PROJECTDEFINE to give it the proper projection information--the following 
is as I said, a guess.

PROJECTION   LAMBERT
UNITS        METERS
PARAMETERS:

  45 30 00
  45 00 00
-111 00 00             
  45 15 00
  0.0
  0.0
  
.............................................
9 Dec 1998 greg green mrsp gd usgs denver  
a) --------
the projection is:
PROJECTION   UTM
UNITS        METERS
ZONE         12
 
b) --------
modifed the INFO file ABSAROKA.REL entry 
"TABLE-ID                   = abw_lith.dat"
to read as 
"TABLE-ID                   = ABSAROKA.DAT"

c)---------
modifed the ABSAROKA.AML to call the relate file ABSAROKA.DAT
instead of the ABSAROKA.LUT file
/* polygonshades absaroka igds-layer absaroka.lut
   polygonshades absaroka igds-layer absaroka.dat /* gng

d)---------
added 
 lineset hpispp.lin      /* gng
 arclines dikes symbol   /* gng

e)---------
modifed the dike cover 
 arc>    additem dikes.aat dikes.aat symbol 3 3 i
 tables> asel;reselect IGDS-LAYER cn 'mi';calc symbol = 305
 asel;reselect IGDS-LAYER cn 'd';calc symbol = 372
 asel;reselect IGDS-LAYER cn 'Ti';calc symbol = 374
 asel;reselect IGDS-LAYER cn 'TKi';calc symbol = 377
 asel;reselect IGDS-LAYER cn 'Ka';calc symbol = 390
 asel;reselect IGDS-LAYER cn 'Au';calc symbol = 360
 asel;reselect IGDS-LAYER cn 'Aag';calc symbol = 132
and the ABSAROKA.AML

f)---------
corrected several attributes 
In the .aat and .pat file we added an item called NEW.  When Brad Van Gosen and I
changed the orginal we put the 'corrected' value into NEW item.  Therefore to 
quickly locate our changes find where IGDS-LAYER ne NEW.

g)--------- 
added attributes for the DETACHMENT faults

h)---------
Modified the absaroka.aml to run with these changes.  It is called beartooth.aml to 
keep it separate from the original.