Files available through this site represent the digital component of the Geologic
Map of the Sedan quadrangle, Gallatin and Park Counties, Montana, as well as
pdf files for the cartographic product, including cross sections, explanations,
and other text.

Included are the following ARC/INFO coverages in regular and export format:

geo_net - map unit line and polygon coverage
geo_pnt - strike and dip points

stru_net - fault and fold line coverage
stru_pnt - foliation point coverage
stpnt_graphic - graphical representation of stru_pnt and geo_pnt
dvalues - annotation for stru_pnt and geo_pnt

data_net - quad boundary and cross sections line coverage
data_pnt - wells, spring, and gravel pit point coverage

pnt_sym - point coverage of line decorations
pnt_graphic - graphical representation of pnt_sym


PLEASE NOTE:  The direction of the arcs is significant in that it 
determines on which side the sawteeth or half circles are placed on
the thrust and detachment faults.  The sawteeth or half circles are 
on the upper plate.  If these coverages are cleaned the arcs can 
'flip' and the sawteeth or half circles will end up on the incorrect
side of the fault.  Please refer to the graphic file for correct 
placement of sawteeth or half circles.

ALSO: The info files give the azimuth for strike and the value for dip; 
the direction of dip is not readily apparent from the info files.  The 
user should refer to the plotted graphic to determine direction of dip.

Also included are line and shade sets and special fonts, an .aml
to plot the coverages, a .gra file and .eps file

special fonts - fnt026, fnt035, fnt037, fnt039, fnt040

sedan.mrk
sedan.lin
sedan.shd

sedangeology.aml - plot aml
sedangeology.gra - ARC/INFO plot file produced from above .aml
sedangeology.ps - Postscript file produced from above .gra

sedanmeta.txt - an ascii file with FGDC Formal Metadata

PLEASE NOTE:  This plot is not meant to represent the final published
version of the geologic map. It is provided as a guide to
the user of the digital coverages.  Please see the pdf files of the
map layout for the final published version (version 2.0) of the geologic map.