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

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

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This digital map database, compiled from previously published and unpublished data as well as new mapping by the author, represents the general distribution of bedrock and surficial deposits in the map area.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