March 20, 2002

Digital capture and compilation of 1968-1970 and 1999-2001 geologic field mapping, Voyageurs 
National Park

Published by the Minnesota Geological Survey as:

M-125	Bedrock geologic map of Voyageurs National Park and Vicinity, Minnesota.  C.B. Hemstad, 
D. L. Southwick, and R.W. Ojakangas.  2002.  Scale 1:50,000. 


Sources for the compiled data of the Voyageurs geology map include:  (1)  Geological information 
collected by R. Ojakangas along the Rainy Lake shoreline of the Kabatogama peninsula; (2) Geological 
information collected by D. Southwick along the shorelines of Kabetogama, Namakan, Sand Point, and 
Crane Lakes; and  (3) New mapping by C. Hemstad in the interior of the Kabetogama peninsula.  Recently 
completed 1:24,000 scale maps of the Island View (m-105) and Cranberry Bay (m-110) quadrangles are 
available online and were also incorporated into this compilation.

The map was created digitally in ArcView.  The principal ArcView components were converted into Arc 
coverages and have Arc topology.  They are included in the m-125.zip file in Arc export format (see listing 
below).   No base data sets are available with the Arc file.  The ArcView digital data sets are quite large 
and include quad scale drg base material that can be obtained on a CD-ROM if so desired.  They are not 
available on line except by request.

m-125.zip- contains the folders and files listed below

e00_files

faults.e00        Arc export file of faults lines
geol7aa.e00       Arc export file of  geologic contacts
parkboundary.e00  Arc export file of the Voyaguers park boundary
str1.e00          Arc export file of  reduced structure point data
unclpdpg.e00	  Arc export file of area geology polygons unclipped to lakes.  This file was 
                   completed somewhat earlier than the voyamerge7 data file (which was clipped 
                   and modified after technical review) and contains rock names and codes that 
                   may differ from the voyamerge7 clipped data.  If for some reason the unclipped 
                   data is reclipped with new lake outlines, be aware that the codes will not always 
                   match the published version.
voyamerge7.e00    Arc export file of park and surrounding geology with polygons clipped to lake 
                   outlines.


metadata  - text formated files that describe the 
  data collection and usage for the various components that went into creating the map.  Although they apply 
  to the above e00 files, the metadata was derived from the ArcView compilation.

expl_map_units.txt - text version of the explanation of map units that are on the paper and digital map.


For more information or problems with downloads, contact Richard Lively at the Minnesota Geological 
Survey, by email:  lively@umn.edu  or phone at:  612-627-4780, x 211.