Point and line geologic structure information in "Structure, outcrop, and subcrop of the Bedrock Aquifers Along the Western Margin of the Denver Basin, Colorado" (geosymb)

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey - Rafferty, Sharon A.
Publication_Date: 19980630
Title:
Point and line geologic structure information in "Structure, outcrop, and subcrop of the Bedrock Aquifers Along the Western Margin of the Denver Basin, Colorado" (geosymb)
Edition: Version 1.0, July 07, 1998
Geospatial_Data_Presentation_Form: Downloadable GIS Data
Publication_Information:
Publisher: U.S. Geological Survey, WRD
Online_Linkage: http://pubs.usgs.gov/ds/2006/193/
Larger_Work_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 1998
Title:
Colorado Front Range Infrastructure Resources Project
Geospatial_Data_Presentation_Form: report
Series_Information:
Series_Name: Hydrologic Investigations Atlas
Issue_Identification: HA-742
Publication_Information:
Publication_Place: Denver, Colorado
Publisher: U.S. Geological Survey
Online_Linkage: http://water.usgs.gov/GIS/metadata/usgswrd/XML/co_geosymb_ha742.xml
Description:
Abstract:
This digital geospatial data set consists of points and lines representing
symbolization of geologic structure information for the Arapahoe
and Laramie-Fox Hills aquifers.  The symbols were developed
as part of the report in "Structure, Outcrop, and Subcrop of
the Bedrock Aquifers Along the Western Margin of the Denver
Basin, Colorado" (Robson and others, 1998).
Purpose:
This data set was created to display geohydrologic structure
information shown in (Robson and others, 1998).
Supplemental_Information:
Procedures_Used:

Geologic contacts, strike and dip symbols, and tic marks
were scanned from 1:50,000 maps (Robson and other, 1998)
at 200 to 800 dots per inch into a tagged image file
format (TIFF, a bit-mapped file format).  The TIFF's were converted
to unrectified grids, ARC/INFO raster geospatial data sets, by the
ARC/INFO command IMAGEGRID. Vector geospatial data sets, (known
as coverages in ARC/INFO terminology), were created from ascii files
containing the latitude and longitude coordinates in degrees, minutes
and seconds. These coverages were projected into State Plane projection
specific to  each county map. Link files were created to help
register the grids to the coverages by use of the ARC/INFO command
CONTROLPOINTS.

Arc: controlpoints fig2_grid fig2_lin fig2_tics nominal identity # point

Registration root mean square errors of 0.005 or less were acceptable for
the creation of link files.

The unrectified grids were  georectified with the ARC/INFO command
GRIDWARP which transforms or rubber sheets a grid along a set of links
by using a first-order polynomial transformation. Polygon coverages were
created from the grids with the ARC/INFO command GRIDPOLY.  Polygons
were built from groups of contiguous cells having the same cell value.
Labels were added to the coverages with the ARC/INFO command
CREATELABELS.  The labels were centered in the polygons with the ARC/
INFO command CENTROIDLABELS.  An empty coverage then was created in
ARC with the bnd from the polygon coverage and brought into Arcedit
with an edit feature of point.  The GET command was used to bring
in the labels from the polygon coverage.  The coverage then was saved
in Arcedit and built as a point coverage.

Arc: gridpoly fig2_rgrid fig2_cov
Arc: createlabels fig2_cov
Arc: centroidlabels fig2_cov inside
Arc: create new_cov fig2_cov
Arcedit: ef point
Arcedit: ec new_cov
Arcedit: get fig2_cov
Arcedit: save new_cov
Arc: build new_cov point

The point coverages were attributed with the items STRIKE, DIP
and TYPE.  The coverages were reopened in Arcedit and label points
were attributed with their strike and dip angles along with their
attributes for type.  Markersymbols were placed according to the angle
of the strike and placed starting counterclockwise from the horizontal
which is 0 degrees.

Drafts  of these coverages then were plotted at a scale of 1:50,000,
checked against the original mylar sheets, and corrected for omissions.

The coverages were appended and built into a single point coverage.

The final coverage represents one thematic layer in
maps in Robson and others (1998).

This data set is one of seven digital map data sets being published
together for this area.  The other six data sets are:

ARAPBASE  - structure contours on base of upper Arapahoe aquifer
LFHTOP    - structure contours on top of Laramie-Fox Hills aquifer
LFHBASE   - structure contours on base of Laramie-Fox Hills aquifer
WELLS     - location of wells
GEO       - geohydrologic unit boundaries
STUDYAREA - outline of study area

The following is an AML to generate a graphic of this coverage.
A copy of the markerset geosymb.mrk is included with the coverages
for this area.

>display 9999
>map geosymb.map
>mape studyarea
>mapunits meters
>pagesize 37 51
>mappos cen cen
>clearsel
>box 1.0 1.0 35 49.5
>arcs studyarea
>markerset geosymb.mrk
>linecolor black
>markersymbol 264
>markerlayer 1
>markerangle 90
>markerlayer 2
>markerangle 90
>markerlayer 3
>markerangle 90
>markerput 2
>markersymbol 2
>resel geosymb_cov points type cn 'sd'
>points geosymb_cov
>textoffset .09 0
>textsize 6 pt
>textfont 94021
>textcolor black
>textangle 180
>pointtext geosymb_cov dip /*norotation
>clearsel
>markersymbol 255
>markerlayer 1
>markerangle 0
>markerlayer 2
>markerangle 0
>markercolor green
>markerput 255
>resel geosymb_cov points type cn 'vb'
>points geosymb_cov
>clearsel
>markersymbol 266
>markerangle 180
>markercolor blue
>markerput 266
>resel geosymb_cov points type cn 'ob'
>points geosymb_cov
>textangle 310
>textoffset .09 0
>pointtext geosymb_cov dip
>linecolor red
>arcs geosymb_cov
>clearsel
>resel geosymb_cov  points type cn 'hb'
>markersymbol 267
>points geosymb_cov
>textoffset 0 0

Reviews_Applied_to_Data:

March 1998:  Colleague review of 1:50,000-scale maps that
were generated from the original data set.  Manuscript review
included validation of method as outlined in map report
(HA-742) and inspection for positional accuracy.

March 1998:  Inspection of copy generated from this data set.

April 1998:  Colleague review of original digital data set
and associated metadata.  Metadata review included verification
of table and column/item identities and definitions, validation
of the reference data sets and citations, verification of
consistency between log file and documented procedures, and
validation of development method as described in the documentation.

References_Cited:

Robson,S.G., Van Slyke, George, and Graham, Glenn, 1998, Structure,
outcrop, and subcrop of the bedrock aquifers along the western margin
of the Denver Basin, Colorado:  U.S. Geological Survey Hydrologic
Investigations Atlas HA-742, 5 sheets, scale 1:50,000.
Available through the internet at <URL:http://webserver.cr.usgs.gov/frir>

Any use of trade, product, or firm names is for descriptive
purposes only and does not imply endorsement by the
U.S. Geological Survey.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1998
Currentness_Reference:
Current as of publication date.
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None Planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -105.25683629
East_Bounding_Coordinate: -104.58906173
North_Bounding_Coordinate: 40.88668006
South_Bounding_Coordinate: 39.28197938
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: strikes
Theme_Keyword: dips
Theme_Keyword: geologic section
Theme_Keyword: inlandWaters
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: Denver, Colorado
Access_Constraints: none
Use_Constraints:
These data are not to be used at scales greater than 1:50,000.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Colorado District Chief
Contact_Address:
Address_Type: mailing address
Address:
Box 25046, MS 415, Denver Federal Center
City: Lakewood
State_or_Province: CO
Postal_Code: 80225
Country: USA
Contact_Voice_Telephone: 1-888-275-8747
Contact_Facsimile_Telephone: 303-236-4912
Contact_Electronic_Mail_Address: wfhorak@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: http://certmapper.cr.usgs.gov/data/frip/graphic/geosymb.jpg
Browse_Graphic_File_Type: JPEG
Data_Set_Credit:
U.S. Geological Survey
Native_Data_Set_Environment:
dgux, 5.4R3.10, AViiON UNIX ARC/INFO version 7.0.4
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Geologic strike and dips generally are from geologic maps
published by the U.S. Geological Survey.  Revisions to published mapping are
based on field reconnaissance data.  Hydrologic Atlas-746
provides description of geology and references to published
mapping.
Logical_Consistency_Report:
Chain-node topology present
Completeness_Report:
There are numerous sources for the geology.
Refer to U.S.G.S. HA-742 for discussion
and references.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Scanned lines and data points are within 0.01 inch of the original
line work.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey (comp)
Publication_Date: 1998
Title:
Please see Robson and others (1998) for discussion and references
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: Hydrologic Investigations Atlas
Issue_Identification: HA-742
Publication_Information:
Publication_Place: Denver, CO
Publisher: U.S. Geological Survey
Type_of_Source_Media: mylar sheets
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1997
Source_Currentness_Reference:
1998
Source_Citation_Abbreviation:
Source_Contribution:
Robson and others (1998).
Process_Step:
Process_Description:
See Supplemental Information
Process_Date: 1998
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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: 79
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 15
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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: implied
Longitude_of_Central_Meridian: implied
Latitude_of_Projection_Origin: implied
False_Easting: implied
False_Northing: implied
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 17.8063663684
Ordinate_Resolution: 17.8063663684
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
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: GEOSYMB.PAT
Entity_Type_Definition:
Attribute table of GEOSYMB
Entity_Type_Definition_Source:
GIS software
Attribute:
Attribute_Label: AREA
Attribute_Definition:
Area of polygon in coverage units (meters)
Attribute_Definition_Source:
Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Positive real numbers
Enumerated_Domain_Value_Definition:
n/a
Enumerated_Domain_Value_Definition_Source:
GIS software
Attribute:
Attribute_Label: PERIMETER
Attribute_Definition:
Perimeter of polygon in coverage units (meters)
Attribute_Definition_Source:
Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Positive real numbers
Enumerated_Domain_Value_Definition:
n/a
Enumerated_Domain_Value_Definition_Source:
GIS software
Attribute:
Attribute_Label: GEOSYMB#
Attribute_Definition:
Internal feature number
Attribute_Definition_Source:
Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sequential unique positive integer
Enumerated_Domain_Value_Definition:
n/a
Enumerated_Domain_Value_Definition_Source:
GIS software
Attribute:
Attribute_Label: GEOSYMB-ID
Attribute_Definition:
User-assigned feature number
Attribute_Definition_Source:
User-defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Integer
Enumerated_Domain_Value_Definition:
n/a
Enumerated_Domain_Value_Definition_Source:
GIS software
Attribute:
Attribute_Label: STRIKE
Attribute_Definition:
positive numbers, 0 to 360 showing
alignment in right angle to the line of dip.
Attribute_Definition_Source:
see (Robson and others, 1998)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0 to 360
Enumerated_Domain_Value_Definition:
n/a
Enumerated_Domain_Value_Definition_Source:
see (Robson and others, 1998)
Attribute:
Attribute_Label: DIP
Attribute_Definition:
positive numbers, 0 to 90 showing
alignment in right angle to the line of dip.
Attribute_Definition_Source:
see (Robson and others, 1998)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0 to 90
Enumerated_Domain_Value_Definition:
represents dip angle of the structural surface
using positive numbers 0 to 360.
Enumerated_Domain_Value_Definition_Source:
see (Robson and others, 1998)
Attribute:
Attribute_Label: TYPE
Attribute_Definition:
Identifier for marker symbols
Attribute_Definition_Source:
see (Robson and others, 1998)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: character
Enumerated_Domain_Value_Definition:
See Entity and Attribute Overview
Enumerated_Domain_Value_Definition_Source:
see (Robson and others, 1998)
Overview_Description:
Entity_and_Attribute_Overview:
Item STRIKE represents positive numbers, 0 to 360 showing
alignment in right angle to the line of dip.
Item DIP represents dip angle of the structural surface
using positive numbers 0 to 90.
Item TYPE is an identifier for marker symbols representing
geologic attributes. The identifiers represent the following:

vb = vertical bed
ob = overturned bed
s  = strike
d  = dip
hb = horizontal bed

>
>geosymb.PAT:
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  AREA                   8    18     F      5
>    9  PERIMETER              8    18     F      5
>   17  geosymb#               4     5     B      -
>   21  geosymb-ID             4     5     B      -
>   25  STRIKE                 3     3     I      -
>   28  DIP                    2     2     I      -
>   30  TYPE                   4     4     C      -
Item LINE_TYPE is an identifier for the type of graphic symbolic
representation of arcs.

c = cross-section [trace of geologic section shown in Robson and
others, (1998)]
>
>geosymb.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  geosymb#               4     5     B      -
>   29  geosymb-ID             4     5     B      -
>   33  LINE_TYPE              4     4     C      -
>
>
Entity_and_Attribute_Detail_Citation:
none
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Position: Ask USGS - Water Webserver Team
Contact_Address:
Address_Type: mailing
Address:
507 National Center
City: Reston
State_or_Province: VA
Postal_Code: 20192
Contact_Voice_Telephone: 1-888-275-8747 (1-888-ASK-USGS)
Contact_Electronic_Mail_Address: http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+co_geosymb_ha742
Resource_Description: Downloadable Data
Distribution_Liability:
Although this data set has been used by the U.S. Geological
Survey, U.S. Department of the Interior, no warranty expressed or
implied is made by the U.S. Geological Survey as to the accuracy
of the data and related materials. The act of distribution shall not 
constitute any such warranty, and no responsibility is assumed by 
the U.S. Geological Survey in the use of this data, software, or 
related materials.

Any use of trade, product, or firm names is for descriptive
purposes only and does not imply endorsement by the U.S.
Government.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ArcInfo Export File
Format_Information_Content:
Geologic structure geographic features
Transfer_Size: 31.5 KB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://certmapper.cr.usgs.gov/data/frip/spatial/export/geosymbe.zip
Digital_Form:
Digital_Transfer_Information:
Format_Name: Shapefile
Format_Information_Content:
Geologic structure geographic features
Transfer_Size: 31.5 KB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://certmapper.cr.usgs.gov/data/frip/spatial/shape/geosymb.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.
Digital_Form:
Digital_Transfer_Information:
Format_Name: Export
Format_Information_Content:
Full coverage
File_Decompression_Technique: zipped
Transfer_Size: 1
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://water.usgs.gov/GIS/dsdl/geosymb.mrk.e00.gz
Digital_Form:
Digital_Transfer_Information:
Format_Name: Export
Format_Information_Content:
Full coverage
File_Decompression_Technique: zipped
Transfer_Size: 1
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://water.usgs.gov/GIS/dsdl/geosymb.e00.gz
Digital_Form:
Digital_Transfer_Information:
Format_Name: Other
Format_Information_Content:
Full coverage
File_Decompression_Technique: zipped
Transfer_Size: 1
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://water.usgs.gov/GIS/dsdl/geosymb.tgz
Fees: None. This dataset is provided by USGS as a public service.
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Metadata_Reference_Information:
Metadata_Date: 20041108
Metadata_Review_Date: 20050310
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Position: Ask USGS -- Water Webserver Team
Contact_Address:
Address_Type: mailing
Address:
507 National Center
City: Reston
State_or_Province: VA
Postal_Code: 20192
Contact_Voice_Telephone: 1-888-275-8747 (1-888-ASK-USGS)
Contact_Electronic_Mail_Address: http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+co_geosymb_ha742
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
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