Selected geoscience data from the Western Churchill NATMAP 
project, Kivalliq Region, Nunavut - Volume II


About the CD-ROM
----------------
This CD-ROM contains several sets of digital data files (see 
\doc\guide.* for a list of data sets).  Although the digital data was 
prepared with Arc/Info and is provided in Arc/Info format, it is also 
provided in several interchange formats for use in other GIS and/or 
CAD packages.

DXF and E00 files have been compressed using PKZIP version 2.04g.  They 
can be uncompressed to your harddrive using PKUNZIP version 2.04g or higher.  
The following command will provide information about the original size of 
the DXF or E00 file:

C:\TEMP> pkunzip -v d:\data\dxf\bedrock\maguse\geolline.zip.

All files are provided in PC-compatible formats.  UNIX users must 
use the dos2unix utility provided with UNIX operating systems to convert 
ASCII format files (E00/DXF/TXT) prior to use.

A free data viewer, ArcExplorer, is provided in the \SUPPORT\EXPLORER\ 
directory (see http://www.esri.com/software for more details) for 
PC-users only.  Simply double click on the *.EXE file and follow the 
installation instructions.  No viewing software is provided with this 
CD-ROM for Macintosh or UNIX clients.


ARC files
---------
Stored in the \DATA\ARC\ directory, Arc/Info format files can be read
directly by Arc/Info, ArcExplorer and ArcView on all supported platforms.

E00 files
---------
Stored in the \DATA\E00\ directory, Arc/Info ASCII interchange format 
files allow Arc/Info coverages to be read by Arc/Info on all platforms. 
The format is also supported by many other GIS packages.  E00 files have
been zipped to reduce file size.  As with any ASCII files on the CD-ROM,
E00 files must be converted to UNIX ASCII format for use on UNIX
workstations.

DXF files
---------
Stored in the \DATA\DXF\ directory, ASCII DXF format files are widely used
by both CAD and GIS software to interchange line and point data.  By 
definition, DXF files do not support topology for polygon files, however,
polygon attribute information can be can be associated to DXF files as
attributes tagged to text located inside polygons.  DXF files have been
zipped to reduce file size.  Once unzipped, the DXF files must be converted 
to UNIX ASCII format for use on UNIX workstations.

XLS files
---------
Stored in the \DATA\XLS\ directory, Microsoft Excel files (version 2.1)
are commonly used for storage of point data such as geochemistry and 
geochronology data.  

DBF files
---------
Stored in the \DATA\DBF\ directory, DBF database format (version III) is a
standard format for reading point data into GIS software.

TIF files
---------
Stored in the \DATA\TIF\ directory, georeferenced, 24 bit images are provided 
in *.TIF format.  Accompanying *.CLR and *.TFW files contain colour look up 
table and georeferencing information, respectively.