Atlas of Sand, Gravel, and Quarry Aggregate Resources, Colorado Front Range Counties (frir_agg) - A digital representation of the 1974 atlas by S.D. Schwochow, R.R. Shroba, and P.C. Wicklein, Colorado Geological Survey-Department of Natural Resources

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Sadlik, Joseph M.
Originator: Litke, David W.
Originator: McCormick, Maria L.
Originator: Hiatt, Chris
Publication_Date: 19980831
Title:
Atlas of Sand, Gravel, and Quarry Aggregate Resources, Colorado Front Range Counties (frir_agg) - A digital representation of the 1974 atlas by S.D. Schwochow, R.R. Shroba, and P.C. Wicklein, Colorado Geological Survey-Department of Natural Resources
Edition: 1.0
Geospatial_Data_Presentation_Form: Downloadable GIS Data
Publication_Information:
Publisher: U.S. Geological Survey
Online_Linkage: http://pubs.usgs.gov/ds/2006/193/
Larger_Work_Citation:
Citation_Information:
Originator: Colorado Geological Survey-Department of Natural Resources
Publication_Date: 1974
Title:
1974 atlas by S.D. Schwochow, R.R. Shroba, and P.C. Wicklein, Colorado Geological Survey-Department of Natural Resources
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: Sand, Gravel, and Quarry Aggregate Resources
Publication_Information:
Publication_Place: Denver, CO
Publisher: U.S. Geological Survey
Online_Linkage: http://rockyweb.cr.usgs.gov/frontrange/datasets.htm
Description:
Abstract:
This CD-ROM contains a digital version of aggregate resources information
originally published by the Colorado Geological Survey as Special Publications
5-A and 5-B by Schwochow, Shroba, and Wicklein in 1974.  The original atlas
information was published as 212 individual quadrangles, however, this dataset
has been panelled. The dataset extent ranges from the Wyoming/Colorado state
line southward along the Front Range to Pueblo, Colorado and from the foothills
west of Denver and Colorado Springs to approximately the eastern edges of Weld,
Douglas, El Paso, and Pueblo counties.  The CD also contains text files of
explanatory notes and quadrangle names.  Datasets clipped to the county
boundaries, the individual county boundaries, and a dataset containing the
quadrangle and project boundaries are also included.
Purpose:
Conversion of the atlas to digital form was done to aid in the cataloging of
aggregate resources along the Front Range of Colorado as part of the Front
Range Infrastructure Resources Project (FRIRP).  This dataset can be used alone
but will probably be most useful in a geographic information system or decision
support system.  The dataset should be useful to aggregate producers, land use
planners, environmental groups, biologists, and land owners, etc...  The
original data compilation was done at 1:24,000 and reduced to 1:75,000 in the
5-B publication and reduced to 1:250,000 in the 5-A publication; the aggregate
data should not be used for analysis at a scale any larger than 1:24,000.
Supplemental_Information:
The following represents a list of all aggregate datasets on the CD-ROM:

frir_agg - panelled net coverage, lines and areas with label points
West Bounding Coordinate: -106.01842755
East Bounding Coordinate: -103.56788683
North Bounding Coordinate: 41.00603478
South Bounding Coordinate: 37.86705931

frir_aggx - panelled point coverage
West Bounding Coordinate: -105.95149503
East Bounding Coordinate: -103.58992347
North Bounding Coordinate: 40.99842681
South Bounding Coordinate: 37.86940928

adaag - net coverage clipped to Adams county
West Bounding Coordinate: -105.05364773
East Bounding Coordinate: -104.02057555
North Bounding Coordinate: 40.00383221
South Bounding Coordinate: 39.73525649

adaagx - point coverage clipped to Adams county
West Bounding Coordinate: -105.05221286
East Bounding Coordinate: -104.18757313
North Bounding Coordinate: 39.99969653
South Bounding Coordinate: 39.74151893

araag - net coverage clipped to Arapahoe county
West Bounding Coordinate: -105.05437893
East Bounding Coordinate: -104.01307782
North Bounding Coordinate: 39.74344799
South Bounding Coordinate: 39.56191127

araagx - point coverage clipped to Arapahoe county
West Bounding Coordinate: -105.0531223
East Bounding Coordinate: -104.04882132
North Bounding Coordinate: 39.73807191
South Bounding Coordinate: 39.5638072

bouag - net coverage clipped to Boulder county
West Bounding Coordinate: -105.60819021
East Bounding Coordinate: -105.05455222
North Bounding Coordinate: 40.26150201
South Bounding Coordinate: 39.91231192

bouagx - point coverage clipped to Boulder county
West Bounding Coordinate: -105.59693577
East Bounding Coordinate: -105.05791288
North Bounding Coordinate: 40.26080903
South Bounding Coordinate: 39.92409375

cusag - net coverage clipped to Custer county
West Bounding Coordinate: -105.12573916
East Bounding Coordinate: -105.06027224
North Bounding Coordinate: 38.12143162
South Bounding Coordinate: 37.98912702

cusagx - point coverage clipped to Custer county
West Bounding Coordinate: -105.12573916
East Bounding Coordinate: -105.06027224
North Bounding Coordinate: 38.12143162
South Bounding Coordinate: 37.98912702

denag - net coverage clipped to Denver county
West Bounding Coordinate: -105.08164148
East Bounding Coordinate: -104.60610603
North Bounding Coordinate: 39.91463682
South Bounding Coordinate: 39.62766893

denagx - point coverage clipped to Denver county
West Bounding Coordinate: -105.08162621
East Bounding Coordinate: -104.62610467
North Bounding Coordinate: 39.87165659
South Bounding Coordinate: 39.62865697

douag - net coverage clipped to Douglas county
West Bounding Coordinate: -105.221721
East Bounding Coordinate: -104.66079793
North Bounding Coordinate: 39.56614029
South Bounding Coordinate: 39.1291703

douagx - point coverage clipped to Douglas county
West Bounding Coordinate: -105.0939017
East Bounding Coordinate: -104.67928366
North Bounding Coordinate: 39.56318729
South Bounding Coordinate: 39.131878

elpag - net coverage clipped to El Paso county
West Bounding Coordinate: -105.02849121
East Bounding Coordinate: -104.04589301
North Bounding Coordinate: 39.13016572
South Bounding Coordinate: 38.51647848

elpagx - point coverage clipped to El Paso county
West Bounding Coordinate: -104.93416363
East Bounding Coordinate: -104.06612966
North Bounding Coordinate: 39.12900577
South Bounding Coordinate: 38.52151385

gilag - net coverage clipped to Gilpin county
West Bounding Coordinate: -105.62587664
East Bounding Coordinate: -105.42447604
North Bounding Coordinate: 39.93815138
South Bounding Coordinate: 39.89914119

gilagx - point coverage clipped to Gilpin county
West Bounding Coordinate: -105.60590305
East Bounding Coordinate: -105.4596678
North Bounding Coordinate: 39.92237039
South Bounding Coordinate: 39.90250038

hueag - net coverage clipped to Huerfano county
West Bounding Coordinate: -104.93235345
East Bounding Coordinate: -104.86451445
North Bounding Coordinate: 37.88920933
South Bounding Coordinate: 37.87494477

hueagx - point coverage clipped to Huerfano county
West Bounding Coordinate: -104.92110188
East Bounding Coordinate: -104.86450876
North Bounding Coordinate: 37.88762133
South Bounding Coordinate: 37.877054

jefag - net coverage clipped to Jefferson county
West Bounding Coordinate: -105.3758565
East Bounding Coordinate: -105.04852806
North Bounding Coordinate: 39.91447501
South Bounding Coordinate: 39.25930981

jefagx - point coverage clipped to Jefferson county
West Bounding Coordinate: -105.25611913
East Bounding Coordinate: -105.05496282
North Bounding Coordinate: 39.91321383
South Bounding Coordinate: 39.48968604

larag - net coverage clipped to Larimer county
West Bounding Coordinate: -106.01829168
East Bounding Coordinate: -104.94297781
North Bounding Coordinate: 41.00169164
South Bounding Coordinate: 40.25683989

laragx - point coverage clipped to Larimer county
West Bounding Coordinate: -105.95052027
East Bounding Coordinate: -104.94416017
North Bounding Coordinate: 40.93443543
South Bounding Coordinate: 40.36015857

pueag - net coverage clipped to Pueblo county
West Bounding Coordinate: -105.05047481
East Bounding Coordinate: -104.05134821
North Bounding Coordinate: 38.52619917
South Bounding Coordinate: 37.88215246

pueagx - point coverage clipped to Pueblo county
West Bounding Coordinate: -105.04268268
East Bounding Coordinate: -104.05482619
North Bounding Coordinate: 38.51135313
South Bounding Coordinate: 37.88809388

telag - net coverage clipped to Teller county
West Bounding Coordinate: -105.10508444
East Bounding Coordinate: -105.0272037
North Bounding Coordinate: 39.12971417
South Bounding Coordinate: 38.98325667

telagx - point coverage clipped to Teller county
West Bounding Coordinate: -105.95052027
East Bounding Coordinate: -104.94416017
North Bounding Coordinate: 40.93443543
South Bounding Coordinate: 40.36015857

welag - net coverage clipped to Weld county
West Bounding Coordinate: -105.05620403
East Bounding Coordinate: -103.56788682
North Bounding Coordinate: 41.01052087
South Bounding Coordinate: 39.99151014

welagx - point coverage clipped to Weld county
West Bounding Coordinate: -105.05337111
East Bounding Coordinate: -103.58992347
North Bounding Coordinate: 41.00234152
South Bounding Coordinate: 39.99279068

The following ascii text files are also included on the CD-ROM:
agg_notes.txt - listing of textual notes with associated quadrangles
agg_names.txt - listing of current and historical quadrangle names and
counties
The datasets contained on this CD-ROM, with the exception of the text files,
must be converted from Arc/INFO v.7 EXPORT format (file extension .e00).
The Spatial_Data_Organization_Information is given for the two project-sized
datasets:  frir_agg and frir_aggx, the first listing refers to frir_agg, the
second to frir_aggx.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 19980629
Currentness_Reference:
ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -106.01842755
East_Bounding_Coordinate: -103.56788683
North_Bounding_Coordinate: 41.00603478
South_Bounding_Coordinate: 37.86705931
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: aggregate
Theme_Keyword: sand and gravel
Theme_Keyword: quarry
Theme_Keyword: infrastructure
Theme_Keyword: Colorado Geological Survey
Theme_Keyword: U.S. Geological Survey
Theme:
Theme_Keyword_Thesaurus: ArcIMS Metadata Server Theme Codes
Theme_Keyword: geoscientificInformation
Theme_Keyword: economy
Theme_Keyword: environment
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Front Range
Place_Keyword: Colorado
Place_Keyword: Denver metro area
Access_Constraints: none
Use_Constraints:
Acknowledgement of the Colorado Geological Survey and the U.S. Geological
Survey would be appreciated.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Colorado Geological Survey
Contact_Address:
Address_Type: mailing address
Address:
1313 Sherman St., Room 715
City: Denver
State_or_Province: Colorado
Postal_Code: 80203
Country: USA
Contact_Voice_Telephone: (303)866-3340
Contact_Facsimile_Telephone: (303)866-2461
Browse_Graphic:
Browse_Graphic_File_Name: http://certmapper.cr.usgs.gov/data/frip/graphic/frir_agg.jpg
Browse_Graphic_File_Type: JPEG
Data_Set_Credit:
Joseph M. Sadlik    USGS-NMD, Denver, CO
David W. Litke      USGS-WRD, Denver, CO
Maria L. McCormick  USGS-NMD, Denver, CO
Chris Hiatt         Student Assistant, USGS-WRD, Denver, CO
Carol S. Mladinich  USGS-NMD, Denver, CO
Stewart M. Wright   USGS-NMD, Denver, CO
Jim Cappa           Colorado Geological Survey, Denver, CO
William H. Langer   USGS-NMD, Denver, CO
Heike Streibeck     Student Assistant, Fachhochscule, Karlsruhe, Germany
Native_Data_Set_Environment:
IRIX, 6.3, IP32 UNIX ARC/INFO version 7.04 and 7.1.1
Cross_Reference:
Citation_Information:
Originator: Schwochow, S.D
Originator: Shroba, R.R
Originator: Wicklein, P.C.
Publication_Date: 19740630
Title:
Sand, Gravel, and Quarry Aggregate Resources-Colorado Front Range Counties
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: Special Publication
Issue_Identification: 5-A
Publication_Information:
Publication_Place: Denver, Colorado
Publisher: Colorado Geological Survey-Department of Natural Resources
Back to Top
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Linework was scanned from original 1:24,000-scale, stable-base project
maps provided by the Colorado Geological Survey. The data was vectorized and
imported into Arc/INFO v.7.0.4 where attributes were assigned to polygons,
lines, and points.  The individual quadrangle datasets were panelled together
for a demonstration area (a 45-quad area generally encompassing the Denver
metro area) and for the remaining quadrangles, then panelled into the final
dataset.  Where possible, all information was replicated from the atlas by
Schwochow, Shroba, and Wicklein though attribute and resource delineation
inconsistencies were encountered along some of the quadrangle boundaries.
Most of these inconsistencies were resolved through discussions with the
Colorado Geological Survey. Where the original Special Publication 5-B
indicated that 212 7.5-minute quadrangles were mapped, actually, the area
encompasses 239 quadrangles, after the general highway maps are divided into
7.5-minute quadrangles.
No updated information has been added to the dataset.
Logical_Consistency_Report:
This dataset replicates the information on the original atlas by Schwochow,
Shroba, and Wicklein, though attribute and delineation inconsistencies are
present. Most of these types of inconsistencies were resolved though
discussions with the Colorado Geological Survey.  On the original atlas,
textual notes appear highlighting a unique characteristic of a particular
resource. Generally, the note refers to a discreet polygon, line, or point.
In some cases, the note does not relate to a specific polygon.  An example
is the note AR01,"Valley fill along Middle St. Vrain Creek probably contains
local deposits of sand and gravel".  The area is not explicitly identified
so the note has been placed as near as possible to the position on the
original map. There are eleven such occurences, and all refer to polygons.
In other cases, it was difficult to determine the extent of influence of a
note.  In these cases, an additional line was added to create a new polygon
containing the note.
Topology is present on all the aggregate coverages.
The data was reviewed several times during the course of compilation by
reviewing the data online and reviewing check plots to ensure data
completeness and continuity.
Completeness_Report:
The dataset replicates the areal extent of the atlas by Schwochow, Shroba,
and Wicklein.  An attribute scheme was developed based on the information shown
in the original atlas.  Additional attributes were developed to more completely
portray areas implicitly shown on the atlas, but not directly translated to
digital form. For example, attributes were developed to indicate bedrock
polygons, unattributed polygons, and unattributed lines.  Individual attributes
were developed for properties identified on each sample point location, such as
overburden thickness, rather than retaining the implicit grouping of the
information as shown on the original atlas.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Accuracy of this dataset is directly related to the accuracy of the original
1:24,000-scale stable-base materials. Plots were used to visually compare the
vectorized coverages against the orignal stable-base materials.  During the
conversion to a digital coverage, decisions were made regarding minor join
problems and unattributed polygons shown on the original materials.  Mapping
scale and methods used to compile the data are factors that require careful
consideration when determining how to use the data.  Refer to the original
publications 5-A and 5-B for specific information on how the original data
was mapped.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Schwochow, S.D
Originator: Shroba, R.R.
Originator: Wicklein, P.C.
Publication_Date: 19740630
Title:
Atlas of Sand, Gravel, and Quarry Aggregate Resources, Colorado Front Range Counties
Geospatial_Data_Presentation_Form: atlas
Series_Information:
Series_Name: Special Publication
Issue_Identification: 5-B
Publication_Information:
Publication_Place: Denver, Colorado
Publisher: Colorado Geological Survey-Department of Natural Resources
Source_Scale_Denominator: 24000
Type_of_Source_Media: stable-base material
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19730921
Ending_Date: 19740321
Source_Currentness_Reference:
letter of transmittal for publication
Source_Citation_Abbreviation:
Special Pub 5-B
Source_Contribution:
The aggregate data presented on this CD-ROM were produced by scanning the
original stable-base materials used in the creation of the Atlas.
Process_Step:
Process_Description:
Data was collected from original 1:24,000-scale, stable-base (master)
project maps provided by the Colorado Geological Survey.  These maps
were scanned at 800 dpi using an Anatech Eagle 4080 scanner.  The
resulting raster images were imported into Pacer-Infotec's LT4X
software and edited and vectorized.  The vector data was exported as
AutoCad DXF-format files, and imported into Arc/INFO v. 7.0.4 using
the DXFARC command.  Line, area, and point information was attributed
using Arcedit command and using the master project maps as references.
Process_Date: 19971231
Process_Step:
Process_Description:
The dataset was panelled three times: first into the 45-quadrangle
Denver-area demonstration area, second, the remaining 194 quadrangles, and
third, the demonstration area and the outer project area were panelled
together.  Positions of the area label points and the textual notes
were adjusted where necessary to remove multiple label points and to
clarify a particular note's influence.  Adjustment of the notes was also
done to the lines and points.
Process_Date: 19980626
Process_Step:
Process_Description:
A listing of all notes occurring in the Atlas, agg_notes.txt, was
created and contains a reference code used as an attribute in the
dataset, i.e., AR06, LN05, PT07, the textual note, and a list of the
quadrangles to which the note applies.
A listing of quadrangles in the Atlas, agg_names.txt, was created. Many
of the quadrangle names have been changed since the Atlas was published
in 1974.  The list provides the current quadrangle name as listed in
GNIS (Geographic Names Information System) as of May 1998, the
historical/alternate name as shown in the Atlas, and the county in
which the quadrangle is located, with the primary county listed first.
Where no historical name exists, the letter "Z" is used as a
placeholder.
Process_Date: 19980626
Process_Step:
Process_Description:
As a final step, the coverages were clipped using county coverages created
from the 1:2,000,000 state digital line graph.  The FRIR project covers all
or parts of fourteen counties. The clipping tolerance used was 1.219 meters.
Process_Date: 19980626
Process_Step:
Process_Description:
The data was reviewed several times to ensure completeness, and
correctness.  Several iterations of checkplots were created for
review purposes during initial collection and after the 239 individual
quadrangles were panelled into the final dataset.
Process_Date: 19980623
Process_Step:
Process_Description:
First draft of metadata created by Maria L. McCormick using FGDCMETA.AML
ver. 1.2 05/14/98 on ARC/INFO data set /data5/maria/frir_agg and
/data5/maria/frir_aggx. The FGDCMETA.AML was used on the county-clipped
net and point coverages to obtain their spatial extents.  The attribute
information is the same as the two final datasets, frir_agg and frir_aggx.
Process_Date: 19980629
Back to Top
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 3165
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 8434
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 3166
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 3332
Back to Top
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 13
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -105.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000.000000
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 34.79777581083
Ordinate_Resolution: 34.79777581083
Planar_Distance_Units: Meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: GRS1980
Semi-major_Axis: 6378206.4
Denominator_of_Flattening_Ratio: 294.98
Back to Top
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
The items unique to Arc/INFO will be ignored in the descriptions of the
attributes.

Attribute listings for frir_agg (net coverage):
>
>FRIR_AGG.PAT:
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  AREA                   8    18     F      5
>    9  PERIMETER              8    18     F      5
>   17  FRIR_AGG#              4     5     B      -
>   21  FRIR_AGG-ID            4     5     B      -
>   25  LFUNIT                 1     1     C      -
>   26  RCLASS                 1     1     I      -
>   27  NOTE                   6     6     C      -
>   33  COMMENT               30    30     C      -
>     **  REDEFINED ITEMS  **
>  25  RCODE                  2     2     C      -
>
LFUNIT = landform unit
F = floodplain deposit
T = stream terrace deposit
V = valley fill (floodplain and/or terrace deposits)
U = upland deposits
A = alluvial fan
E = eolian sand (wind-deposited)
M = man-made deposits (slag, tailings, spoils...)
R = potential quarry aggregate resource
O = other, includes conglomerates
Z = not mapped

RCLASS = resource class
0 = originally unlabelled/unkown
1 = gravel; relatively clean and sound
2 = gravel; significant fines, decomposed rock, calcium carbonate
3 = sand
4 = probable aggregate resource
5 = carbonate rocks
6 = volcanic rocks
7 = intrusive igneous rocks
8 = metamorphic rocks (including quartzite)
9 = other

NOTE = textual note reference, i.e., AR05; refer to the text file
agg_notes.txt for the note content. The "AR" indicates the note
refers to an area; "Z is used as a placeholder.

COMMENT = not used in the area file, "Z" is used as a placeholder

RCODE = combination of LFUNIT and RCLASS

>
>FRIR_AGG.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  FRIR_AGG#              4     5     B      -
>   29  FRIR_AGG-ID            4     5     B      -
>   33  CONTACT                2     2     I      -
>   35  NOTE                   6     6     C      -
>   41  COMMENT               30    30     C      -
>   71  SOURCE                 5     5     C      -
>
CONTACT = boundary between landform units and/or resource classes
1 = definite, known/observed (solid)
2 = approximate (dashed)
3 = inferred, buried (dotted)
4 = neatline (used for delineation of resource areas that end at a
county boundary)
5 = unattributed line, used for clarification of textual notes

NOTE = textual note reference, i.e., LN05; refer to the text file
agg_notes.txt for the note content. The "LN" indicates the note
refers to a line; "Z" is used as a placeholder.

COMMENT = not used in the line file; "Z" is used as a placeholder

SOURCE = a reference to the compiler of a feature; "Z" is used as a placeholder

Attribute listings for frir_aggx (point coverage):
>
>FRIR_AGGX.PAT:
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  AREA                   8    18     F      5
>    9  PERIMETER              8    18     F      5
>   17  FRIR_AGGX#             4     5     B      -
>   21  FRIR_AGGX-ID           4     5     B      -
>   25  TYPE                   1     1     C      -
>   26  STAT_74                1     1     C      -
>   27  RESFT                  4     4     I      -
>   31  RQ                     5     5     C      -
>   36  RESTYPE                4     4     C      -
>   40  OVBFT                  4     4     I      -
>   44  OQ                     5     5     C      -
>   49  FINES                  1     1     C      -
>   50  PCT_FINES              3     3     I      -
>   53  WEAK_RX                1     1     C      -
>   54  CACO3                  1     1     C      -
>   55  NOTE                   6     6     C      -
>   61  COMMENT               30    30     C      -
>     **  REDEFINED ITEMS  **
>   25  RCODE                  2     2     C      -

TYPE = type of sample site
D = drill hole
P = sand/gravel pit
S = sample site
Q = quarry
Z = no value shown, placeholder

STAT_74 = operational status in 1974
O = operating
A = abandoned
Z = no value shown, placeholder

RESFT = resource thickness in feet

RQ = resource qualifier; supplemental information relating to the resource
thickness

RESTYPE = resource type
S = sand
G = gravel
X = unevaluated or unkown property
Z = no value shown, placeholder

OVBFT = overburden thickness in feet

OQ = overburden qualifier; supplemental information relating to the overburden
thickness

FINES = indicates presence of fine material in the deposit
A = absent or insignificant amounts
S = significant amount of fines (passing through a no. 200 screen,
0.0059 in., or 0.074 mm)
X = unevaluated or unknown property
Z = no value shown, placeholder

PCT_FINES = percent sand and fines (passing no. 4 screen, 0.25 in.),
visual estimation

WEAK_RX = indicates presence of weak or incompetent material in the deposit
A = absent or insignificant amounts
S = significant amount present
X = unevaluated or unknown property
Z = no value shown, placeholder

CACO3 = indicates presence of calcium carbonate in the deposit
A = absent or insignificant amounts
S = significant amount present
X = unevaluated or unknown property
Z = no value shown, placeholder

NOTE = textual note reference, i.e., PT05; refer to the text file
agg_notes.txt for the note content. The "PT" indicates the note
refers to a point; "Z" is used as a placeholder.

COMMENT = additional information about the sample site, drill hole, quarry...
A "WG" denotes Colorado Geological Survey/Windsor Sand and Gravel
projects' drill hole

RCODE = combination of TYPE and STAT_74
Entity_and_Attribute_Detail_Citation:
For an overview of the attribute information in the Atlas, see "Sand, Gravel,
and Quarry Aggregate Resources-Colorado Front Range Counties" by S.D. Schwochow,
R.R. Shroba, and P.C. Wicklein published by the Colorado Geological Survey as
Special Publication 5-A in 1974.  For attributes that were added to facilitate
representation as a digital file, see the Entity_and_Attribute_Overview above.
Back to Top
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Colorado Geological Survey
Contact_Address:
Address_Type: mailing address
Address:
1313 Sherman St., Room 715
City: Denver
State_or_Province: Colorado
Postal_Code: 80203
Country: USA
Contact_Voice_Telephone: (303)866-3340
Contact_Facsimile_Telephone: (303)866-2461
Resource_Description: Downloadable Data
Distribution_Liability:
This Compact Disc-Read Only Memory (CD-ROM) publication was prepared by
an agency of the United States Government. Neither the United States
Government nor any agency thereof, nor any of their employees, make any
warranty, expressed or implied, or assumes any legal liability or
responsibility for the accuracy, completeness, or usefulness of any
information, apparatus, product, or process disclosed in this report, or
represents that its use would not infringe privately owned rights.
Reference therein to any specific commercial product, process, or service
by trade name, trademark, manufacturer, or otherwise does not necessarily
constitute or imply its endorsement, recommendation, or favoring by the
United States Government or any agency thereof.  Any views and opinions
of authors expressed herein do not necessarily state or reflect those
of the United States Government, or any agency thereof.

Although all data and software published on this CD-ROM have been used
by the United States Geological Survey (USGS), no warranty, expressed or
implied, is made by the USGS as to the accuracy of the data and related
materials and/or the functioning of the software.  The act of distribution
shall not constitute any such warranty, and no responsibility is assumed
by the USGS in the use of this data, software, or related materials.

Graphical map depictions of the data are intended to be used within the
map scale limits applicable to the source data. Although software enables
the user to show images of the data at various scales, the user is cautioned
to refer to the source documentation for the appropriate map scale limitations.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ArcInfo Export File
Format_Information_Content:
Front Range infrastructure aggregate resources geographic features
Transfer_Size: 10.5 MB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://certmapper.cr.usgs.gov/data/frip/spatial/export/friragge.zip
Digital_Form:
Digital_Transfer_Information:
Format_Name: Shapefile
Format_Information_Content:
Front Range infrastructure aggregate resources geographic features
Transfer_Size: 10.5 MB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://certmapper.cr.usgs.gov/data/frip/spatial/shape/friragg.zip
Digital_Form:
Digital_Transfer_Information:
Format_Name: Image Map Service (CO_FrontRange)
Format_Version_Number: 4.01
Format_Specification:
ArcIMS Image Map Service
Format_Information_Content:
A web-based interactive mapping system that accesses an ArcIMS Map Service running on certmapper.cr.usgs.gov.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://certmapper.cr.usgs.gov/pubs/servlet/MapViewerBroker?project=frip&Service=CO_FrontRange&OVMap=CO_overview
Access_Instructions:
This URL links to a web-based interactive mapping system that accesses an ArcIMS Image Map Service that runs in Netscape 4.7, Internet Explorer 4.5 and higher. The mapservice can also be accessed using any custom client that adheres to the protocol specified through ArcXML.
Back to Top
Metadata_Reference_Information:
Metadata_Date: 19980820
Metadata_Review_Date: 20050304
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey-National Mapping Division Rocky Mountain Mapping Center
Contact_Person: Maria L. McCormick
Contact_Address:
Address_Type: mailing address
Address:
Box 25046, MS 516, DFC
City: Denver
State_or_Province: Colorado
Postal_Code: 80225
Country: USA
Contact_Voice_Telephone: (303)202-4295
Contact_Facsimile_Telephone: (303)202-4354
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Back to Top