
Minnesota Geological Survey
Fargo/Moorhead Study
digital elevation models

Digital elevation models of unit tops are derived from surfaces 
prepared using GOCAD software - Earth Decisions Sciences version 2.1.1
The grids are projected in study coordinates.

grids
------
001	    - Lake Agassiz beach sands
002	    - Sherack Formation
003	    - Surficial sand and gravel (undifferentiated)
004	    - Forest River Group
005	    - Brenna/Argusville Formations
006	    - Red Lake River Group sand and gravel
007	    - Red Lake River Group sediments
008	    - Red Lake River Group lacustrine/Sheyenne Delta sediment
009	    - Upper Goose River Group unit 1 sand and gravel
010	    - Upper Goose River Group unit 1 till
011	    - Upper Goose River Group unit 2 sand and gravel
012	    - Upper Goose River Group unit 2 till
013	    - Lower Goose River Group sand and gravel
014	    - Lower Goose River Group till
015	    - Otter Tail River Group sand and gravel
016	    - Otter Tail River Group till
017	    - Lake Tewaukon Group sand and gravel
018	    - Lake Tewaukon Group till
019	    - Buffalo River Group till
020	    - Crow Wing River Group unit 1 till
021	    - Crow Wing River Group unit 2 till
022	    - Browerville Formation sand and gravel
023	    - Browerville Formation till
024	    - Older unknown unit a4 sand and gravel
025	    - Older unknown unit a4 till
026	    - Older unknown unit a5 sand and gravel
027	    - no layer assigned
028	    - Quaternary undifferentiated
029	    - Bedrock undivided
030	    - Cretaceous Pierre Formation
031	    - Cretaceous Niabrara Formation
032	    - Cretaceous Carlile Formation
033	    - Cretaceous Greenhorn Formation
034	    - Cretaceous undifferentiated
035	    - Pre-Cretaceous bedrock

 Numbers refer to stratigraphic order of units from youngest (uppermost) to oldest.  
 Grids and supporting files are named by number and then abbreviated description
 of unit name, arranged by spatial coverage into directories as follows:

 /regional      - regional model
 /hankinson     - Hankinson detailed area model
 /pelican	- Pelican detailed area model
 /pineland	- Pineland detailed area model
 /west_fargo    - West Fargo detailed area model


 all grids are present as ArcInfo grids and should be transfered using
 any means that preserves associated "info" subdirectory in each model
 directory.  ArcInfo/ArcGrid command "external" may be required to 
 correct external file pathnames for a grid's INFO data files.

 all grids are in the FMS projection which is:

   Lambert projection 
   units: meters
   1st std parallel: 33 00 00
   2nd std parallel: 45 00 00
   central meridian: -96 30 00
   origin parallel : 45 00 00

 using the NAD83 datum.


Bob Tipping/MGS - 6/2005
tippi001@umn.edu

