A spatial database of bedding attitudes to accompany Geologic Map of the Boulder--Fort Collins--Greeley area, Colorado, by Roger B. Colton

Online link https://geo-nsdi.er.usgs.gov/metadata/open-file/03-24/metadata.faq.html
Description This digital map shows bedding attitude data displayed over the geographic extent of rock stratigraphic units (formations) as compiled by Colton in 1976 (U.S.Geological Survey Map I-855-G) under the Front Range Urban Corridor Geology Program. Colton used
Originators Brandt, Theodore R.; Moore, David W.; and Murray, Kyle E.
Publication U.S. Geological Survey Open-File Report 03-024

Related topics

States or counties

Overview of attributes

The data is supplied in ARC/INFO export format.
DATABASE STRUCTURE - ARC/INFO ====================================
This GIS database includes related look-up tables, which store detailed attribute information.  This database structure is more fully described in USGS OFR 99-438.  The GIS database structure used in the database includes symbol items in coverage point (PAT) attribute tables for user convenience.  Arc/Info relates for each coverage are saved in a file named <covername>.rel.  Use the RELATE command with the restore argument at the arc prompt to make the relates active.  Alternatively, in Arctools, use the Relate environment:  open dialog in the Manage - Relates flyout menu under the Arctools menu to make the relates active.
bouldip coverage:  Contains points recording site-specific observations and measurements, such as strike and dip of bedding. In the bouldip.pat INFO file the PTTYPE item lists the type of point symbol, e.g., strike dip and of inclined bedding.  The SYMBOL item lists the marker symbol used by ArcInfo to identify the type of structural map symbol(Symbol numbers refer to the geoscamp2.mrk markerset).  The STRIKE item contains the strike of bedding.  Strike is an azimuthal angle (measured in degrees from 0 to 360 in a clockwise direction from North).  The DIP item contains the dip of bedding.  This value is an angle measured (in degrees 0 to 90) down from the horizontal; thus a horizontal dip is 0 degrees and a vertical dip is 90 degrees.  The SOURCE item lists the numeric code used to identify the data source.  The DISPLAY item is coded 1 when a point is displayed on the map layout, 2 when it is not.  In this database, all points are displayed.
In the coverage's bouldip.ref INFO file the SOURCE item lists the numeric code used to identify the data source.  The scale item lists the scale of the source map.  (This value is the denominator of the proportional fraction that identifies the scale of the map that was digitized or scanned to produce the digital map.)  The AUTHORS item lists the author(s) or compiler(s) of source map entered as last name, first name or initial, and middle initial.  The YEAR item lists the source (map) publication date.  The REFERENCE item lists the remainder of the reference in USGS reference format.
boulcnty coverage:  Contains lines representing county boundaries derived from Colorado Department of Local Affairs, Colorado Office of Emergency Management data.
In the coverage's boulcnty.ref INFO file the SOURCE item lists the numeric code used to identify the data source.  The scale item lists the scale of the source map.  (This value is the denominator of the proportional fraction that identifies the scale of the map that was digitized or scanned to produce the digital map.)  The AUTHORS item lists the author(s) or compiler(s) of source map entered as last name, first name or initial, and middle initial.  The YEAR item lists the source (map) publication date.  The REFERENCE item lists the remainder of the reference in USGS reference format.
boulhwy coverage:  Contains lines representing highways and major arterials.  In the boulhwy.aat INFO file the FEATURID item contains a unique line identifier assigned by the Federal Highway Administration.  The DESCRIPT item provides the name or identification for the link (i.e. BASELINE RD).  The DSOURCE item provides the original source of the coordinate information (i.e. S=State Supplied Digital Data, U=USGS Digital Line Graphs, T=US Census TIGER/Line files, M=Digitized from State supplied maps, H=Military Supplied data, all other values indicate Unknown).  The STFIPS item indicates the two character State FIPS Code (FIPS Pub 6-4).  The CTFIPS item indicates the three digit County FIPS code (FIPS Pub 6-4).  The SIGN1 item indicates the Primary Sign Route (i.e. I-25).  The SIGN2 item indicates the Alternate Sign Route.  The MILES item indicates an accurate measurement in miles for the link chain.  The KM item indicates an accurate measurement in kilometers for the link chain.  The FACTYPE item describes the permissible flow of traffic over the link (1=One-way flow, 2=Bi-directional flow).  The LANES item indicates the number of lanes in both directions.
In the coverage's boulhwy.ref INFO file the SOURCE item lists the numeric code used to identify the data source.  The scale item lists the scale of the source map.  (This value is the denominator of the proportional fraction that identifies the scale of the map that was digitized or scanned to produce the digital map.)  The AUTHORS item lists the author(s) or compiler(s) of source map entered as last name, first name or initial, and middle initial.  The YEAR item lists the source (map) publication date.  The REFERENCE item lists the remainder of the reference in USGS reference format.
bouldhyp coverage:  Contains lines representing hypsographic contours derived from USGS Digital Line Graph data.  In the bouldhyp.aat INFO file the ELEV item contains the contour elevation in meters.
In the coverage's bouldhyp.ref INFO file the SOURCE item lists the numeric code used to identify the data source.  The scale item lists the scale of the source map.  (This value is the denominator of the proportional fraction that identifies the scale of the map that was digitized or scanned to produce the digital map.)  The AUTHORS item lists the author(s) or compiler(s) of source map entered as last name, first name or initial, and middle initial.  The YEAR item lists the source (map) publication date.  The REFERENCE item lists the remainder of the reference in USGS reference format.
boulplss coverage:  Contains lines representing U.S. Public Land Survey System township and range lines derived from USGS Digital Line Graph data
In the coverage's boulplss.ref INFO file the SOURCE item lists the numeric code used to identify the data source.  The scale item lists the scale of the source map.  (This value is the denominator of the proportional fraction that identifies the scale of the map that was digitized or scanned to produce the digital map.)  The AUTHORS item lists the author(s) or compiler(s) of source map entered as last name, first name or initial, and middle initial.  The YEAR item lists the source (map) publication date.  The REFERENCE item lists the remainder of the reference in USGS reference format.
The INFO structure of these files is listed below:
>BOULDIP.PAT:
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  AREA                   8    18     F      5
>    9  PERIMETER              8    18     F      5
>   17  BOULDIP#               4     5     B      -
>   21  BOULDIP-ID             4     5     B      -
>   25  PTTYPE                80    80     C      -
>  105  SYMBOL                 3     3     I      -
>  108  STRIKE                 3     3     I      -
>  111  DIP                    3     3     I      -
>  114  SOURCE                 4     4     I      -
>  118  DISPLAY                3     3     I      -
>
>BOULDIP.REF:
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  SOURCE                 4     4     I      -
>    5  SCALE                  8     8     I      -
>   13  AUTHORS              200   200     C      -
>  213  YEAR                   4     4     I      -
>  217  REFERENCE            250   250     C      -
>
>BOULCNTY.AAT:
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  FNODE#                 4     5     B      -
>    5  TNODE#                 4     5     B      -
>    9  LPOLY#                 4     5     B      -
>   13  RPOLY#                 4     5     B      -
>   17  LENGTH                 8    18     F      5
>   25  BOULCNTY#              4     5     B      -
>   29  BOULCNTY-ID            4     5     B      -
>   33  SOURCE                 4     4     I      -
>
>BOULCNTY.REF:
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  SOURCE                 4     4     I      -
>    5  SCALE                  8     8     I      -
>   13  AUTHORS              200   200     C      -
>  213  YEAR                   4     4     I      -
>  217  REFERENCE            250   250     C      -
>
>BOULHWY.AAT:
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  FNODE#                 4     5     B      -
>    5  TNODE#                 4     5     B      -
>    9  LPOLY#                 4     5     B      -
>   13  RPOLY#                 4     5     B      -
>   17  LENGTH                 8    18     F      5
>   25  BOULHWY#               4     5     B      -
>   29  BOULHWY-ID             4     5     B      -
>   33  FEATURID               8    20     F      0
>   41  DESCRIPT              35    35     C      -
>   76  DSOURCE                1     1     C      -
>   77  STFIPS                 2     2     C      -
>   79  CTFIPS                 3     3     C      -
>   82  SIGN1                  6     6     C      -
>   88  SIGN2                  6     6     C      -
>   94  MILES                  4    13     F      2
>   98  KM                     4    13     F      2
>  102  FACTYPE                8    11     F      0
>  110  LANES                  8    11     F      0
>  118  SOURCE                 4     4     I      -
>
>BOULHWY.REF:
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  SOURCE                 4     4     I      -
>    5  SCALE                  8     8     I      -
>   13  AUTHORS              200   200     C      -
>  213  YEAR                   4     4     I      -
>  217  REFERENCE            250   250     C      -
>
>BOULDHYP.AAT:
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  FNODE#                 4     5     B      -
>    5  TNODE#                 4     5     B      -
>    9  LPOLY#                 4     5     B      -
>   13  RPOLY#                 4     5     B      -
>   17  LENGTH                 8    18     F      5
>   25  BOULDHYP#               4     5     B      -
>   29  BOULDHYP-ID             4     5     B      -
>   33  ELEV                   6     6     I      -
>   39  SOURCE                 4     4     I      -
>
>BOULDHYP.REF:
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  SOURCE                 4     4     I      -
>    5  SCALE                  8     8     I      -
>   13  AUTHORS              200   200     C      -
>  213  YEAR                   4     4     I      -
>  217  REFERENCE            250   250     C      -
>
>BOULPLSS.AAT:
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  FNODE#                 4     5     B      -
>    5  TNODE#                 4     5     B      -
>    9  LPOLY#                 4     5     B      -
>   13  RPOLY#                 4     5     B      -
>   17  LENGTH                 8    18     F      5
>   25  BOULPLSS#              4     5     B      -
>   29  BOULPLSS-ID            4     5     B      -
>   33  SOURCE                 4     4     I      -
>
>BOULPLSS.REF:
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  SOURCE                 4     4     I      -
>    5  SCALE                  8     8     I      -
>   13  AUTHORS              200   200     C      -
>  213  YEAR                   4     4     I      -
>  217  REFERENCE            250   250     C      -
>
>Coding of PTTYPE in the bouldip coverage:
>
>Inclined bedding - Showing strike and dip
>Vertical bedding - Showing strike
>Overturned bedding - Showing strike and dip

http://pubs.usgs.gov/of/2003/ofr-03-024/OFR-03-024text508.pdf