Minnesota Geological Survey
Miscellaneous Map Series M-173

Surficial Geology of the Crookston 1:100,000 Quadrangle
May 2006

Ken Harris

The mapped area included all of the Crookston Quad within
Minnesota plus the small area of the ne corner of the Grand 
Forks Quad that lies in Minnesota.

GIS data.

All digitizing was done on-screen using ArcView with USGS 7.5'
drgs as background material.  Shapefiles were converted to
ArcInfo coverages, cleaned, built and given attributes in
ArcGIS9.1 workstation.

projection: UTM zone 15; datum: NAD83

base layers
-----------
basexbw.tif - black and white, modified version of USGS 100k drgs
              (Crookston plus Minnesota portion of Grand Forks)
basexbw.tfw - world (registration) file for basexbw.tif
basex.tif - normal color version of basexbw.tif
basex.tfw - world (registration) file for basex.tif


plate1 - Lithotype map and cross-sections
-----------------------------------------
 - map
lithnt   - net (polygon and line) coverage of lithology types
sgln     - line coverage of geomorphic features
sglnim   - line coverage of ice margins
lkpg     - polygon coverage of lakes
xsaline  - location of cross-section "A"
xsdline  - location of cross-section "B"
lithtype.aml - main aml to create surficial map
lith.lut     - look-up table for coloring polys on map
gm.lut       - look-up table to symbolize sgln
[linear features of lithnt are symbolized using the standard
 MGS lookup table mgs.lut]

 - cross-sections
(note that cross-section units are feet with no projection and
 that a 50x vertical exageration is applied)
xsecalth - net (polygon and line) coverage of lith section "A"
xseca_dh - line coverage of control drill holes for section "A"
xseca_gd - line coverage of background grid for section "A"
xsecdlth - net (polygon and line) coverage of lith section "B"
xsecd_dh - line coverage of control drill holes for section "B"
xsecd_gd - line coverage of background grid for section "B"
pltxsec_lith.aml - aml to plot cross-sections
lith.lut         - look-up table for coloring polys on section


plate2 - Lithostratigraphic map and cross-sections
-----------------------------------------
 - map
sgnt     - net (polygon and line) coverage of surficial geology
sgln     - line coverage of geomorphic features
sglnim   - line coverage of ice margins
lkpg     - polygon coverage of lakes
xsaline  - location of cross-section "A"
xsdline  - location of cross-section "B"
sg.aml   - main aml to create surficial map
sg.lut   - look-up table for coloring polys on map
gm.lut   - look-up table to symbolize sgln
[linear features of sgnt are symbolized using the standard
 MGS lookup table mgs.lut]

 - cross-sections
(note that cross-section units are feet with no projection and
 that a 50x vertical exageration is applied)
xseca    - net (polygon and line) coverage of section "A"
xseca_dh - line coverage of control drill holes for section "A"
xseca_gd - line coverage of background grid for section "A"
xsecd    - net (polygon and line) coverage of section "B"
xsecd_dh - line coverage of control drill holes for section "B"
xsecd_gd - line coverage of background grid for section "B"
pltxsec.aml - aml to plot cross-sections
xsec.lut    - look-up table for coloring polys on section


*****************************************************************
Questions concerning the digital data may be directed
to Tim Wahl ( tewahl@umn.edu ) or Rich Lively ( lively@umn.edu ).
Questions concerning the geologic information presented in
the map should be directed to the author, Ken Harris
(harri015@umn.edu).  All may be reached by phone at the MGS at
612-627-4780.

Tim Wahl 2006/05/22.