Geologic map of the Grand Canyon 30' X 60' quadrangle, Coconino and Mohave Counties, northwestern Arizona

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: George H. Billingsley
Originator: Haydee M. Hampton
Publication_Date: 2000
Title:
Geologic map of the Grand Canyon 30' X 60' quadrangle, Coconino and Mohave Counties, northwestern Arizona
Edition: version 1.0
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: U.S. Geological Survey Geologic Investigations Series
Issue_Identification: I-2688
Publication_Information:
Publication_Place: Flagstaff, Arizona
Publisher: U.S. Geological Survey
Online_Linkage: <http://greenwood.cr.usgs.gov/pub/i-maps/i-2688/>
Description:
Abstract:
This digital map database, compiled from previously published and unpublished data as well as new mapping by the author, represents the general distribution of bedrock and surficial deposits in the map area. Together with the accompanying pamphlet, it provides current information on the geologic structure and stratigraphy of the Grand Canyon area. The database delineates map units that are identified by general age and lithology following the stratigraphic nomenclature of the U.S. Geological Survey. The scale of the source maps limits the spatial resolution (scale) of the database to 1:100,000 or smaller.
Purpose:
This dataset was designed for a broad audience. The objective is to provide regional geologic information for visitor services and Park Service management of the Grand Canyon National Park and vicinity. The Grand Canyon 30X60 minute quadrangle is one of eight planned digital geologic maps that will completely cover the Grand Canyon physiographic region. Feedback as to modifications that would be useful for future 1:100,000 quads in the Grand Canyon area is encouraged and welcome.
Supplemental_Information:
Procedures used: The Optronics drum scanner (5040) at the Flagstaff USGS Field site was used to scan all maps. A resolution of 50 microns (508 dpi) was used to scan the faults and contacts from the "Geology of the Eastern Part of the Grand Canyon National Park, Arizona" map. A clear film seperate of the linework was obtained from the publisher for scanning. The clear film was cut into two pieces for scanning because it was too large to fit on the drum. A resolution of 100 microns (1016 dpi) was used for faults on newly mapped areas at the north end of the map and for faults from the map: "Geologic Map of Vulcan's Throne and Vicinity, Western Grand Canyon, Arizona." A resolution of 50 microns was used to scan the contacts from this map. The contacts were etched by hand onto a scribecoat using a 100,000 quad Grand Canyon greenline as a backdrop. After scanning, the .rle file was converted into .rlc format using the "rle2rlc" program on a DEC alpha digital UNIX system. (The DEC alpha, "hydra", at the Flagstaff USGS Field Center was also used for all remaining processing.) The .rle file was then imported into ARC/INFO and converted into GRID format. A double precision tic file containing the 91 tics in the 100,000 quad was created in lat/long and projected into the base map projection (polyconic) using a central meridian of -112.25W. This tic file was used to transform the grid into polyconic. A link file was created for this process which was completed within the ArcScan ArcTools module. The map area was projected into UTM zone 12. Scanned lines were vectorized using ARC/INFO's ArcScan module. Lines were attributed as they were vectorized with the LINETYPE values listed in the Entity_and_Attribute_Overview section. Revisions: No revisions have been made to this dataset Reviews applied to data: This dataset was reviewed for technical errors by Nancy Riggs and L. Greer Price and for proper geologic names by Chuck Powell in 1998. Related spatial data sets: Accompanying the three principal ARC/INFO coverages (gcpoly, gcfold, and gcpoint) are a coverage of the hypsography (gchyp, produced from Digital Line Graphs) and two georegistered tif's [black1r.tif (planimetry) and blue1r.tif (hydrography)] and their respective World files (black1r.tfw and blue1r.tfw).
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2000
Currentness_Reference: Publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Only as required
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -113.01278133
East_Bounding_Coordinate: -111.74854758
North_Bounding_Coordinate: 36.51438719
South_Bounding_Coordinate: 35.95065334
Keywords:
Theme:
Theme_Keyword_Thesaurus: AGI Glossary of Geology
Theme_Keyword: Geologic map
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: USA
Place_Keyword: Grand Canyon
Place_Keyword: Arizona
Place_Keyword: Coconino County
Place_Keyword: Mohave County
Place_Keyword: Colorado River
Stratum:
Stratum_Keyword_Thesaurus: None
Stratum_Keyword: Surficial deposits
Stratum_Keyword: Volcanic deposits
Stratum_Keyword: Mesozoic and Paleozoic sedimentary rocks
Stratum_Keyword: Middle Proterozoic sedimentary rocks
Stratum_Keyword: Early Proterozoic crystalline rocks
Stratum_Keyword: Moenkopi Formation
Stratum_Keyword: Kaibab Formation
Stratum_Keyword: Toroweap Formation
Stratum_Keyword: Coconino Sandstone
Stratum_Keyword: Hermit Formation
Stratum_Keyword: Supai Group
Stratum_Keyword: Surprise Canyon Formation
Stratum_Keyword: Redwall Limestone
Stratum_Keyword: Temple Butte Formation
Stratum_Keyword: Tonto Group
Stratum_Keyword: Grand Canyon Supergroup
Stratum_Keyword: Vishnu Schist
Stratum_Keyword: Brahma Schist
Stratum_Keyword: Rama Schist
Access_Constraints: None
Use_Constraints:
Uses of this digital geologic map should not violate the spatial resolution of the map area (1:100,000) even though the digital data form removes the constraint of scale on a paper map. The accuracy inherent in map scale are also present in digital format. At a scale larger than 1:100,000, higher resolution data is not available and will not yield greater real detail. Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: George H. Billingsley
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing
Address: 2255 North Gemini Drive
City: Flagstaff
State_or_Province: Arizona
Postal_Code: 86001
Country: U.S.A.
Contact_Voice_Telephone: 520-556-7198
Contact_Electronic_Mail_Address: gbillingsley@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: <http://greenwood.cr.usgs.gov/pub/i-maps/i-2688/i-2688.pdf>
Browse_Graphic_File_Description: Graphical representation of map
Browse_Graphic_File_Type: PDF
Data_Set_Credit:
Special thanks go to Sue Beard at the Flagstaff USGS office for her help, especially for arranging for the purchase and maintenance of the necesary equipment and software and for making herself so available to answer questions. We would also like to thank Dan Spotskey of the National Park Service for his help early on in the process. Todd Fitzgibbon at the Menlo Park USGS office gets credit for coming up with the methods used to transform and register the scanning images properly.
Security_Information:
Security_Classification_System: None
Security_Classification: Unclassified
Security_Handling_Description: None
Native_Data_Set_Environment: OSF1, V4.0, alpha UNIX, ARC/INFO version 7.1.2
Cross_Reference:
Citation_Information:
Originator: Peter W. Huntoon
Originator: George H. Billingsley
Originator: James W. Sears
Originator: Four others
Publication_Date: 1996
Title:
Geologic map of the eastern part of the Grand Canyon National Park, Arizona
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Flagstaff, Arizona
Publisher: Grand Canyon Association and Museum of Northern Arizona
Other_Citation_Details: Scale 1:62,500
Online_Linkage: None
Cross_Reference:
Citation_Information:
Originator: George H. Billingsley
Originator: Peter W. Huntoon
Publication_Date: 1983
Title:
Geologic map of the Vulcan's Throne and vicinity, western Grand Canyon, Arizona
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Grand Canyon, Arizona
Publisher: Grand Canyonn Natural History Association
Other_Citation_Details: Scale 1:48,000
Online_Linkage: None
Cross_Reference:
Citation_Information:
Originator: Karen J. Wenrich,
Originator: George H. Billingsley
Originator: Peter W. Huntoon
Publication_Date: 1997
Title:
Breccia-pipe and geologic map of the northeastern part of the Hualapai Indian Reservation and vicinity, Arizona
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map
Issue_Identification: I-2440
Publication_Information:
Publication_Place: Denver, Colorado
Publisher: U.S. Geological Survey
Other_Citation_Details: Scale 1:48,000
Online_Linkage: None

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: See Entity_and_Attribute_Information
Quantitative_Attribute_Accuracy_Assessment:
Attribute_Accuracy_Value: See Attribute_Accuracy_Explanation
Attribute_Accuracy_Explanation:
Attribute accuracy is described, where present, and defined in the Entity_and_Attribute_Information Section
Logical_Consistency_Report: Polygon and chain-node topology present
Completeness_Report:
This report is designed to describe completely the surficial and bedrock geology at a scale of 1:100,000. Geologic information only mappable at a larger scale has been omitted.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: 32 m horizontal
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: No vertical positional data are recorded.
Lineage:
Process_Step:
Process_Description:
Qhb and Qhp polygons in northwest corner of map were corrected using new interpretations from aerial photographs. Polygon boundaries were digitized on screen by visually comparing hand-drawn updates on paper plot at 1:100,000 scale with on screen display. Three Ph polygons in the western part of the map were also adjusted in this manner.
Process_Date: 19980223
Process_Step:
Process_Description:
Karl E. Karlstrom's Early Proterozoic geology polygons were added to the dataset. Karlstrom supplied his additions on mylar. The mylar sheet was scanned and registered. The additions were then digitized on-screen to the gcpoly coverage.
Process_Date: 19980801

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 12
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -111.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000.0
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 1.0
Ordinate_Resolution: 1.0
Planar_Distance_Units: Meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.4
Denominator_of_Flattening_Ratio: 294.98

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: GCPOLY.PAT
Entity_Type_Definition: Polygon attribute table containing geologic unit abbreviations
Entity_Type_Definition_Source: ARC/INFO
Attribute:
Attribute_Label: -
Attribute_Definition: Attribute table of GCPOLY
Attribute_Definition_Source: ARC/INFO
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: AREA
Attribute_Definition: Area of poly/region in square coverage units
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Positive real numbers
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: PERIMETER
Attribute_Definition: Perimeter of poly/region in coverage units
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Positive real numbers
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: GCPOLY#
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: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: GCPOLY-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: Set equal to GCPOLY#
Enumerated_Domain_Value_Definition_Source: Author
Attribute:
Attribute_Label: UNIT
Attribute_Definition: Geologic unit label
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qr
Enumerated_Domain_Value_Definition: Colorado River gravel deposits
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Ql
Enumerated_Domain_Value_Definition: Landslide deposits
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Qtg
Enumerated_Domain_Value_Definition: Terrace gravel deposits
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Qt
Enumerated_Domain_Value_Definition: Travertine deposits
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Qa
Enumerated_Domain_Value_Definition: Alluvial deposits
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Qtp
Enumerated_Domain_Value_Definition: Tuckup Canyon Basalt pyroclastic deposits
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Qtb
Enumerated_Domain_Value_Definition: Tuckup Canyon Basalt basalt flow
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Qti
Enumerated_Domain_Value_Definition: Tuckup Canyon Basalt intrusive dikes
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Qhp
Enumerated_Domain_Value_Definition: Hancock Knolls pyroclastic deposits
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Qhb
Enumerated_Domain_Value_Definition: Hancock Knolls basalt flows
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Qsb
Enumerated_Domain_Value_Definition: Sage Basalt basalt flows
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Qsp
Enumerated_Domain_Value_Definition: Sage Basalt pyroclastic deposits
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Qi
Enumerated_Domain_Value_Definition: Basalt dikes and necks
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Qp
Enumerated_Domain_Value_Definition: Pyroclastic deposits
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Trm
Enumerated_Domain_Value_Definition: Moenkopi Formation
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Pk
Enumerated_Domain_Value_Definition: Kaibab Formation
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Pt
Enumerated_Domain_Value_Definition: Toroweap Formation
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Pc
Enumerated_Domain_Value_Definition: Coconino Sandstone
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Ph
Enumerated_Domain_Value_Definition: Hermit Formation
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Pe
Enumerated_Domain_Value_Definition: Esplanade Sandstone
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: MPu
Enumerated_Domain_Value_Definition: Wescogame and Watahomigi Formations
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Ms
Enumerated_Domain_Value_Definition: Surprise Canyon Formation
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Mr
Enumerated_Domain_Value_Definition: Redwall Limestone
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Dtb
Enumerated_Domain_Value_Definition: Temple Butte Formation
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Cm
Enumerated_Domain_Value_Definition: Muav Limestone
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Cba
Enumerated_Domain_Value_Definition: Bright Angel Shale
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Ct
Enumerated_Domain_Value_Definition: Tapeats Sandstone
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Yi
Enumerated_Domain_Value_Definition: Unnamed diabase sills and dikes
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Yd
Enumerated_Domain_Value_Definition: Dox Formation
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Ys
Enumerated_Domain_Value_Definition: Shinumo Quartzite
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Yh
Enumerated_Domain_Value_Definition: Hakatai Shale
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Yb
Enumerated_Domain_Value_Definition: Bass Formation
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Xg
Enumerated_Domain_Value_Definition: Young granite and pegmatite
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Xgr
Enumerated_Domain_Value_Definition: Granite, granitic pegmatite, and aplite
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Xgd
Enumerated_Domain_Value_Definition: Granodiorite complexes
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Xum
Enumerated_Domain_Value_Definition: Ultramafic rocks
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Xv
Enumerated_Domain_Value_Definition: Vishnu Schist
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Xbr
Enumerated_Domain_Value_Definition: Brahma Schist
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Xr
Enumerated_Domain_Value_Definition: Rama Schist
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Xo
Enumerated_Domain_Value_Definition: Orthoamphibole-bearing gneiss
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Xec
Enumerated_Domain_Value_Definition: Elves Chasm pluton
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: water
Enumerated_Domain_Value_Definition: Water body
Enumerated_Domain_Value_Definition_Source: Author
Detailed_Description:
Entity_Type:
Entity_Type_Label: GCPOLY.AAT
Entity_Type_Definition: Arc attribute table containing geologic/geographic line types
Entity_Type_Definition_Source: ARC/INFO
Attribute:
Attribute_Label: -
Attribute_Definition: Attribute table of GCPOLY
Attribute_Definition_Source: ARC/INFO
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: FNODE#
Attribute_Definition: Internal number of from-node
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sequential unique positive integer
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: TNODE#
Attribute_Definition: Internal number of to-node
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sequential unique positive integer
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: LPOLY#
Attribute_Definition: Internal number of polygon on left of arc
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sequential unique positive integer
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: RPOLY#
Attribute_Definition: Internal number of polygon on right of arc
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sequential unique positive integer
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: LENGTH
Attribute_Definition: Length of arc in coverage units
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Positive real number
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: GCPOLY#
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: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: GCPOLY-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: Set equal to GCPOLY#
Enumerated_Domain_Value_Definition_Source: Author
Attribute:
Attribute_Label: LINETYPE
Attribute_Definition:
Type of geologic or geographic feature denoted by a line in the database.
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NORMAL HIGH ANGLE FAULT
Enumerated_Domain_Value_Definition:
Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset between the rock bodies on either side of the fault. The fault has been observed or is closely constrained, so it is well located as described in Positional_Accuracy.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: NORMAL HIGH ANGLE INFERRED FAULT
Enumerated_Domain_Value_Definition:
Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset between the rock bodies on either side of the fault. The fault is not observed but based on local structural characteristics, its location can be derived.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: NORMAL HIGH ANGLE CONCEALED FAULT
Enumerated_Domain_Value_Definition:
Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset between the rock bodies on either side of the fault. The fault is obscured by overlying mapped units, so it is not well located as described in Positional_Accuracy.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: NORMAL REVERSE FAULT
Enumerated_Domain_Value_Definition:
Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset between the rock bodies on either side of the fault. These boundaries originally experienced offset in a normal fashion, but later re-activated in a reverse fashion (reverse fault).
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: NORMAL REVERSE INFERRED FAULT
Enumerated_Domain_Value_Definition:
Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset between the rock bodies on either side of the fault. These boundaries originally experienced offset in a normal fashion, but later re-activated in a reverse fashion (reverse fault). The location is constrained to reasonable locality, but was not directly observed.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: NORMAL REVERSE CONCEALED FAULT
Enumerated_Domain_Value_Definition:
Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset between the rock bodies on either side of the fault. These boundaries originally experienced offset in a normal fashion, but later re-activated in a reverse fashion (reverse fault). These faults were obscured by overlying material and their location is not well located as described in Positional_Accuracy.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: UNDERWATER FAULT
Enumerated_Domain_Value_Definition:
Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset between the rock bodies on either side of the fault. These boundaries occur underneath the Colorado River or other water bodies and were not directly observed.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: CONTACT
Enumerated_Domain_Value_Definition:
Boundary between two mapped units that retains the original depositional or intrusive relationship. The contact has been observed or is closely constrained, so it is well located as described in Positional_Accuracy.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: BASALT FLOW DIRECTION
Enumerated_Domain_Value_Definition:
Line illustrating the direction of basalt flow from volcanic vent location.
Enumerated_Domain_Value_Definition_Source: Author
Attribute:
Attribute_Label: NAME
Attribute_Definition: Name of linear feature
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: POINTTYPE
Attribute_Definition: Arc marker point type
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Bar and ball
Enumerated_Domain_Value_Definition:
Arcmarker attached to an arc describing the nature of displacement along a fault. Side of arc with bar and ball is the side with downthrown displacement.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Small bar and ball
Enumerated_Domain_Value_Definition:
Arcmarker attached to an arc describing the nature of displacement along a fault. Side of arc with bar and ball is the side with downthrown displacement.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Extra small bar and ball
Enumerated_Domain_Value_Definition:
Arcmarker attached to an arc describing the nature of displacement along a fault. Side of arc with bar and ball is the side with downthrown displacement.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Small fault ball
Enumerated_Domain_Value_Definition:
Arcmarker attached to an arc describing the nature of displacement along a fault. Side of arc with ball is the side with downthrown displacement.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Bar and box
Enumerated_Domain_Value_Definition:
Arcmarker attached to an arc describing Precambrian displacement on faults.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Small bar and box
Enumerated_Domain_Value_Definition:
Arcmarker attached to an arc describing Precambrian displacement on faults.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Extra small bar and box
Enumerated_Domain_Value_Definition:
Arcmarker attached to an arc describing Precambrian displacement on faults.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: None
Enumerated_Domain_Value_Definition: No arcmarker is present
Enumerated_Domain_Value_Definition_Source: Author

Detailed_Description:
Entity_Type:
Entity_Type_Label: GCFOLD.AAT
Entity_Type_Definition: Attribute table of GCFOLD
Entity_Type_Definition_Source: ARC/INFO
Attribute:
Attribute_Label: -
Attribute_Definition: Attribute table of GCFOLD
Attribute_Definition_Source: ARC/INFO
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: FNODE#
Attribute_Definition: Internal number of from-node
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sequential unique positive integer
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: TNODE#
Attribute_Definition: Internal number of to-node
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sequential unique positive integer
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: LPOLY#
Attribute_Definition: Internal number of polygon on left of arc
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sequential unique positive integer
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: RPOLY#
Attribute_Definition: Internal number of polygon on right of arc
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sequential unique positive integer
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: LENGTH
Attribute_Definition: Length of arc in coverage units
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Positive real number
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: GCFOLD#
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: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: GCFOLD-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: Set equal to GCFOLD#
Enumerated_Domain_Value_Definition_Source: Author
Attribute:
Attribute_Label: NAME
Attribute_Definition: Name of fold feature
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Text
Enumerated_Domain_Value_Definition: Proper name of fold feature
Enumerated_Domain_Value_Definition_Source: Author
Attribute:
Attribute_Label: PLUNGE
Attribute_Definition:
Number used to indicate the presence of a plunge arrow on the arc.
Attribute_Definition_Source: See cited source maps.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0 (no plunge arrow) or 120 (plunge arrow with linesymbol 120)
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: LINETYPE
Attribute_Definition:
Type of geologic or geographic feature denoted by a line in the database.
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: MONOCLINE
Enumerated_Domain_Value_Definition: The surface trace of the axis of a monocline.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: INFERRED MONOCLINE
Enumerated_Domain_Value_Definition:
The surface trace of the axis of a monocline, determined with slightly less certainty than that of LINETYPE 'MONOCLINE'.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: CONCEALED MONOCLINE
Enumerated_Domain_Value_Definition:
The surface trace of the axis of a monocline, obscured by overlying material.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: UNDERWATER MONOCLINE
Enumerated_Domain_Value_Definition:
The surface trace of the axis of a monocline, lying beneath the Colorado River or another body of water.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: ANTICLINE
Enumerated_Domain_Value_Definition: The surface trace of the axis of an anticline.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: SYNCLINE
Enumerated_Domain_Value_Definition: The surface trace of the axis of a syncline.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: CONCEALED SYNCLINE
Enumerated_Domain_Value_Definition:
The surface trace of the axis of a syncline, obscured by overlying material.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: UNDERWATER SYNCLINE
Enumerated_Domain_Value_Definition:
The surface trace of the axis of a syncline, beneath the Colorado River or another body of water.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: PLUNGING ANTICLINE
Enumerated_Domain_Value_Definition:
The surface trace of the axis of an anticline, tilted from horizontal.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: PLUNGING SYNCLINE
Enumerated_Domain_Value_Definition:
The surface trace of the axis of a syncline, tilted from horizontal.
Enumerated_Domain_Value_Definition_Source: Author
Attribute:
Attribute_Label: POINTTYPE
Attribute_Definition: Arc marker point type
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Anticline
Enumerated_Domain_Value_Definition: Point symbol indicating a fold of anticlinal nature.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Monocline
Enumerated_Domain_Value_Definition: Point symbol indicating a fold of monoclinal nature.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Syncline
Enumerated_Domain_Value_Definition: Point symbol indicating a fold of synclinal nature.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: None
Enumerated_Domain_Value_Definition: There is no point symbol desired on specified arc.
Enumerated_Domain_Value_Definition_Source: Author

Detailed_Description:
Entity_Type:
Entity_Type_Label: GCPOINT.PAT
Entity_Type_Definition: Attribute table of GCPOINT
Entity_Type_Definition_Source: ARC/INFO
Attribute:
Attribute_Label: -
Attribute_Definition: Attribute table of GCPOINT
Attribute_Definition_Source: ARC/INFO
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: AREA
Attribute_Definition: Degenerate area of a point
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: No area for points
Enumerated_Domain_Value_Definition_Source: Author
Attribute:
Attribute_Label: PERIMETER
Attribute_Definition: Degenerate perimeter of a point
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: No perimeter for points
Enumerated_Domain_Value_Definition_Source: Author
Attribute:
Attribute_Label: GCPOINT#
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: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: GCPOINT-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: Calculated to equal GCPOINT#
Enumerated_Domain_Value_Definition_Source: Author
Attribute:
Attribute_Label: NAME
Attribute_Definition: Name of feature noted by point symbol
Attribute_Definition_Source: User defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -
Enumerated_Domain_Value_Definition: -
Enumerated_Domain_Value_Definition_Source: -
Attribute:
Attribute_Label: POINTTYPE
Attribute_Definition:
The type of planar feature that was observed and the orientation that was measured at this point.
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Bedding
Enumerated_Domain_Value_Definition:
Originally horizontal sedimentary layers were observed and measured at this point.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Exposed breccia pipe (B)
Enumerated_Domain_Value_Definition:
Circular collapse structure characterized by inward-dipping strata and brecciated rock.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Horizontal beds
Enumerated_Domain_Value_Definition:
Horizontal sedimentary layers were observed and measured at this location.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Igneous foliation
Enumerated_Domain_Value_Definition:
Laminated planar structure in igneous rock resulting from segregation of different minerals in layers parallel to flow. Only present in early Proterozoic units.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Incipient crenulation cleavage
Enumerated_Domain_Value_Definition: Secondorder small-scale folding along cleavage plane
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Lineation
Enumerated_Domain_Value_Definition: Any linear structure in a rock
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Magmatic foliation
Enumerated_Domain_Value_Definition: Planar fabric present in some intrusive igneous rocks.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Main crenulation cleavage
Enumerated_Domain_Value_Definition: First-order small-scale folding along a cleavage plane.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Probable breccia pipe (C)
Enumerated_Domain_Value_Definition:
Location where a circular collapse structure characterized by strata dipping inward toward central point was observed. May reflect collapse of a deep-seated breccia pipe.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Pyroclastic cone
Enumerated_Domain_Value_Definition: Observed location of a volcanic vent or cinder cone center.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Vertical igneous foliation
Enumerated_Domain_Value_Definition: Planar fabric oriented vertically in an igneous rock formation.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Vertical joint
Enumerated_Domain_Value_Definition:
The orientation of vertical rock fractures without displacement was measured at this point.
Enumerated_Domain_Value_Definition_Source: Author
Enumerated_Domain:
Enumerated_Domain_Value: Sinkhole
Enumerated_Domain_Value_Definition: A depression, commonly with a circular pattern.
Enumerated_Domain_Value_Definition_Source: Author
Attribute:
Attribute_Label: DIP
Attribute_Definition:
The inclination of planar structures measured in degrees down from horizontal.
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 90
Attribute_Units_of_Measure: Degrees
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: STRIKE
Attribute_Definition:
The orientation of a horizontal line in an inclined planar structure measured in degrees clockwise from north.
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 359
Attribute_Units_of_Measure: Degrees
Attribute_Measurement_Resolution: 1

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing address
Address: Central Publications Group
Address: Box 25046, Denver Federal Center, MS 902
City: Denver
State_or_Province: CO
Postal_Code: 80225-0046
Contact_Voice_Telephone: 303-236-5486
Resource_Description: I-2688
Distribution_Liability:
Although this digital spatial data has been subjected to rigorous review and is substantially complete, it is released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCE
Format_Version_Number: 7.1.2
File_Decompression_Technique: ZIP archive (Windows)
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://greenwood.cr.usgs.gov/pub/i-maps/i-2688/>
Fees: None

Metadata_Reference_Information:
Metadata_Date: 20000825
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: J.L. Wellmeyer
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing address
Address: 2255 N. Gemini Drive
City: Flagstaff
State_or_Province: Arizona
Postal_Code: 86001
Contact_Voice_Telephone: 520-556-7267
Contact_Electronic_Mail_Address: jwellmey@usgs.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

Generated by mp version 2.7.2 on Fri Nov 17 08:22:47 2000