Identification_Information: Citation: Citation_Information: Originator: Karen S. Bolm Originator: Tasha Lewis Originator: Douglas M. Hirschberg Originator: G. Stephen Pitts Originator: William R. Dickinson Publication_Date: 20020930 Title: Spatial Digital Database for the Geology of the San Pedro River Basin in Cochise, Gila, Graham, Pima, and Pinal Counties, Arizona Edition: Version 1 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 02-393 Publication_Information: Publication_Place: Menlo Park, CA Publisher: U.S. Geological Survey Online_Linkage: Description: Abstract: This open-file report is a digital representation of the Dickinson (1993, 1998, 2000) remapping of the post-Mid- Miocene Quiburis Formation in southeastern Arizona. It delineates constituent facies of the Formation throughout the San Pedro trough. Purpose: This dataset was developed to provide geologic map GIS of the Quiburis Formation for use in future spatial analysis by a variety of users. These data can be printed in a variety of ways to display various geologic features or used for digital analysis and modeling. It was digitized from 1:24,000-scale maps. The digital database is not meant to be used or displayed at any scale larger than 1:24,000 (for example, 1:12,000). Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2002 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None Planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -110.99145886 East_Bounding_Coordinate: -110.23607166 North_Bounding_Coordinate: 33.1602919 South_Bounding_Coordinate: 32.15710412 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: geology Theme_Keyword: digital geologic map Place: Place_Keyword_Thesaurus: none Place_Keyword: United States Place_Keyword: Arizona Place_Keyword: San Pedro trough Place_Keyword: Pinal County Place_Keyword: Pima County Place_Keyword: Gila County Place_Keyword: Graham County Place_Keyword: Cochise County Place_Keyword: Camp Grant Wash Place_Keyword: Antelope Peak Place_Keyword: Black Hills Place_Keyword: San Pedro River Place_Keyword: Black Mountain Quadrangle Place_Keyword: Brandenburg Mountain Quadrangle Place_Keyword: Buehman Canyon Quadrangle Place_Keyword: Campo Bonito Quadrangle Place_Keyword: Cherry Spring Peak Quadrangle Place_Keyword: Clark Ranch Quadrangle Place_Keyword: Dudleyville Quadrangle Place_Keyword: Hayden Quadrangle Place_Keyword: Holy Joe Peak Quadrangle Place_Keyword: Hot Tamale Peak Quadrangle Place_Keyword: Happy Valley Quadrangle Place_Keyword: Kielberg Canyon Quadrangle Place_Keyword: Kearny Quadrangle Place_Keyword: Lookout Mountain Quadrangle Place_Keyword: Mammoth Quadrangle Place_Keyword: Mount Bigelow Quadrangle Place_Keyword: North of Oracle Quadrangle Place_Keyword: Oracle Quadrangle Place_Keyword: Peppersauce Wash Quadrangle Place_Keyword: Piety Hill Quadrangle Place_Keyword: Putnam Wash Quadrangle Place_Keyword: Redington Quadrangle Place_Keyword: Rhodes Peak Quadrangle Place_Keyword: Soza Canyon Quadrangle Place_Keyword: Soza Mesa Quadrangle Place_Keyword: Winkelman Quadrangle Place_Keyword: Wildhorse Mountain Quadrangle Access_Constraints: none Use_Constraints: This digital database is not meant to be used or displayed at any scale larger than 1:24,000 (for example, 1:12,000). Any hardcopies utilizing this dataset shall clearly indicate their source. If the user has modified the data in any way, he is obligated to describe the types of modifications he has performed on the hardcopy map. User specifically agrees not to misrepresent this dataset nor to imply that changes he made were approved by the U.S. Geological Survey. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Karen S. Bolm Contact_Organization: U.S. Geological Survey Contact_Position: Physical Scientist Contact_Address: Address_Type: mailing and physical address Address: 520 North Park Avenue #355 City: Tucson State_or_Province: AZ Postal_Code: 85719 Country: USA Contact_Voice_Telephone: (520) 670-5544 Contact_Facsimile_Telephone: (520) 670-5113 Contact_Electronic_Mail_Address: kbolm@usgs.gov Data_Set_Credit: Karen S. Bolm and Tasha Lewis digitized these data from scans of the Dickinson (1993, 1998, 2000) maps made by G. Stephen Pitts. Douglas M. Hirschberg provided programs to aid in attribution of the data, and William R. Dickinson provided attribute information, assisted in the editing, and resolved problems resulting from the combination of three maps. Native_Data_Set_Environment: SunOS, 5.6, sun4u UNIX ARCINFO version 7.2.1 ARCINFO version 8.1 ArcView version 3.2 for Windows Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: When the digitized maps were printed and compared to the Dickinson (1998) mylar originals, a considerable north/south distortion was discovered. The mylar originals were compared to topographic maps of the same area and it was determined that the distortion was due to the mylars becoming stretched during repetitive copy processing. Because of this distortion of the Dickinson(1998) maps, it is difficult to estimate the accuracy of this digital map. Accuracy of the digitized versions of the Dickinson (1993, 2000) maps was verified by manual comparison of the source with hard copy printouts and plots and with screen images. Logical_Consistency_Report: Polygon and chain-node topology present. The Dickinson (1993, 1998, 2000) maps were digitized by Karen S. Bolm and Tasha Lewis. Attributes have the same meaning throughout the maps. In some cases, however, units and lines symbols were not consistent from one map to the other. In those cases, one attribute had to be chosen over the other. Completeness_Report: Some of the units at the edge of the Dickinson (1993, 1998, 2000) maps were labeled, but accurate contacts were not defined. In those cases, either units were attributed as "unmapped" or not included on the digital version or new contacts were added by William R. Dickinson. Some labeling, which could not be easily included as attribution, was omitted. Also, some of the symbolization chosen for this dataset is different than that used by Dickinson (1993, 1998, 2000). This was done to standardize products. The original Dickinson (1993, 1998, 2000) maps were drawn on topographic background. Digital versions of those topographic maps are not included with this dataset. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Due to distortions in the original maps, it was impossible to test the accuracy of the digital mapping of the Dickinson (1998) maps. Based on testing of the the Dickinson (1993, 2000) maps, it is estimated that the features are accurate to within 24 meters. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: William R. Dickinson Publication_Date: 1993 Title: Summary Geologic Map of the Black Hills near Mammoth; Pinal County, Arizona Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Arizona Geological Survey Contributed Map Issue_Identification: CM-93-B Publication_Information: Publication_Place: Tucson, AZ Publisher: Arizona Geological Survey Source_Scale_Denominator: 24000 Type_of_Source_Media: mylar Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1993 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Dickinson (1993) Source_Contribution: Dickinson (1993) was one of the three sources of geologic information uesd to compile the QUIB24K database. Source_Information: Source_Citation: Citation_Information: Originator: William R. Dickinson Publication_Date: 1998 Title: Facies Map of Post-Mid-Miocene Quiburis Formation, San Pedro Trough, Pinal, Pima, Gila, Graham, and Cochise Counties, Arizona Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Arizona Geological Survey Contributed Map Issue_Identification: CM-98-A Publication_Information: Publication_Place: Tucson, AZ Publisher: Arizona Geological Survey Source_Scale_Denominator: 24000 Type_of_Source_Media: mylar Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1998 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Dickinson (1998) Source_Contribution: Dickinson (1998) was one of the three sources of geologic information used to compile the QUIB24K database. Source_Information: Source_Citation: Citation_Information: Originator: William R. Dickinson Publication_Date: 2000 Title: Summary of Tertiary Stratigraphic and Structural Relationships, Camp Grant-Antelope Peak Area, Pinal County, Arizona Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Arizona Geological Survey Contributed Map Issue_Identification: CM-00-B Publication_Information: Publication_Place: Tucson, AZ Publisher: Arizona Geological Survey Source_Scale_Denominator: 24000 Type_of_Source_Media: mylar Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2000 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Dickinson (2000) Source_Contribution: Dickinson (2000) was one of the three sources of geologic information uesd to compile the QUIB24K database. Process_Step: Process_Description: Twelve 1:24,000-scale mylar maps that comprise three Dickinson (1993, 1998, 2000) reports were scanned by G. Stephen Pitts on a Scanographics CF500/4 scanner using ScanServ 3.5.1 software. Pitts mathmetically generated a tic file with tics of the study area spaced at 2.5' intervals, and Karen S. Bolm rectified the scanned images using ESRI ArcView Image Analysis. Bolm and Tasha Lewis digitized the linework using Geologic Mapping Tools, an ArcView extension developed by William R. Kelley (contractor at the U.S. Geological Survey's Western Regional Mineral Resources Team, Spokane Field Office). Lines and polygons were attributed by Bolm in ArcInfo 7.2.1. Points were digitized from the scanned images using digpnt.aml, and attribution was retrieved for annotation using getdip.aml, both programs written by Douglas M. Hirschberg. Process_Date: 2000-2001 Process_Step: Process_Description: After review, it was decided to merge the three Dickinson (1993, 1998, 2000) maps into a single spatial digital database. The coverages were merged by Karen S. Bolm, and discrepancies were resolved by her and William R. Dickinson. Some additional contacts had to be added to separate units that were originally on the edges of the mapped areas. Duplicate lines and points were removed. Maps were plotted at 1:24,000 and checked for errors. Process_Date: 2002 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: 430 SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 2253 SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 431 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: 1.000000 Longitude_of_Central_Meridian: -111.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 0.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.1090807765722 Ordinate_Resolution: 0.1090807765722 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: quib24k.aat Entity_Type_Definition: Geologic units, their labels and descriptions Attribute: Attribute_Label: linecode Attribute_Definition: Numeric code used to identify type of linear feature. Linecodes < 100 are used for contacts and boundaries which are described in the QUIB24K.CO3 file.Linecodes > 100 and < 600 represent structural features which are described in the QUIB24K.ST3 file.Linecodes > 800 and < 900 represent linear geologic units which are described in QUIB24K.LGU Attribute: Attribute_Label: name Attribute_Definition: Name given to structural feature Attribute: Attribute_Label: source Attribute_Definition: Numeric code used to identify the data source for the linear feature. Complete references for the sources are listed in the QUIB24K.REF file. Attribute: Attribute_Label: desc Attribute_Definition: Written description of feature Entity_Type: Entity_Type_Label: quib24k.co3 Entity_Type_Definition: Attribute description for items in the contact (and boundary) look-up table Attribute: Attribute_Label: linecode Attribute_Definition: Numeric code (a value < 100) used to identify type of contact or boundary. (This item also occurs in QUIB24K.AAT.) Attribute: Attribute_Label: symbol Attribute_Definition: Line symbol number used by Arc/Info to plot lines. Symbol numbers refer to the GEOL_DIA.LIN lineset. descriptions for items in the contact (and boundary) look-table Attribute: Attribute_Label: type Attribute_Definition: Major type of line, for example, contact, state boundaries, lines of latitude and longitude used for neatlines. descriptions for items in the contact (and boundary) look-table Attribute: Attribute_Label: modifier Attribute_Definition: Line type modifier, for example, approximate, concealed, gradational. No entry implies "known." descriptions for items in the contact (and boundary) look-table Attribute: Attribute_Label: certainty Attribute_Definition: Degree of certainty of contact or boundary, for example, inferred, uncertain. No entry implies "certain." Attribute: Attribute_Label: desc Attribute_Definition_Source: Written description or explanation of contact or boundary. Entity_Type: Entity_Type_Label: quib24k.st3 Entity_Type_Definition: Attribute description for items in the structure look-up table Attribute: Attribute_Label: linecode Attribute_Definition: Numeric code (a value > 100 and < 600) used to identify type of structural feature. (This item also occurs in QUIB24K.AAT.) Attribute: Attribute_Label: symbol Attribute_Definition: Line symbol number used by ArcInfo to plot arc (line). Symbol numbers refer to the GEOL_DIA.LIN lineset. Attribute: Attribute_Label: type Attribute_Definition: Major type of structure, for example, fault, fracture, fold, other. Attribute: Attribute_Label: horizontal Attribute_Definition: Type of horizontal fault movement, for example, left- lateral, right-lateral. No entry implies "unknown." Attribute: Attribute_Label: vertical Attribute_Definition: Type of vertical fault movement, for example, normal. No entry implies "unknown." Attribute: Attribute_Label: fold Attribute_Definition: Type of fold, for example, anticline, syncline. Attribute: Attribute_Label: plunge Attribute_Definition: Type of plunge on fold, for example, horizontal, plunging, plunging in, plunging out. Attribute: Attribute_Label: accuracy Attribute_Definition: Line type modifier indicating degree of accuracy, for example, approximately located, concealed, gradational. No entry implies "known." Attribute: Attribute_Label: certainty Attribute_Definition: Degree of certainty of contact or boundary, for example, inferred, uncertain. No entry implies "certain." Attribute: Attribute_Label: desc Attribute_Definition: Written description or explanation of structural feature. Entity_Type: Entity_Type_Label: quib24k.lgu Entity_Type_Definition: Attribute descriptions for items in the linear geologic unit look-up table Attribute: Attribute_Label: linecode Attribute_Definition: Numeric code (a value > 800 and < 900) used to identify type of structural feature. (This item also occurs in QUIB24K.AAT.) Attribute: Attribute_Label: unit Attribute_Definition: Numeric code used to identify the rock unit which is described in the QUIB24K.RU look-up table. (This item also occurs in QUIB24K.RU.) Attribute: Attribute_Label: label Attribute_Definition: Rock unit label (abbreviation) used to label unit on map. (This item is also located in the QUIB24K.RU look-up table.) Attribute: Attribute_Label: symbol Attribute_Definition: Line symbol used by ArcInfo to plot arc (line). Symbol numbers refer to the GEOL_DIA.LIN lineset. Attribute: Attribute_Label: label-alpha Attribute_Definition: Rock unit label (abbreviation) Attribute: Attribute_Label: label-gaf Attribute_Definition: Rock unit label (abbreviation) that uses the GeoAgeFullAlpha font, ver. 1.1 (Richard Koch, personal commun., 2001) Attribute: Attribute_Label: type Attribute_Definition: Major type of line, for example, contact, state boundaries, lines of latitude and longitude used for neatlines Attribute: Attribute_Label: accuracy Attribute_Definition: Line type modifier indicating degree of accuracy, for example, approximately located, concealed, gradational. No entry implies "known." Attribute: Attribute_Label: certainty Attribute_Definition: Degree of certainty of contact or boundary, for example, inferred, uncertain. No entry implies "certain." Attribute: Attribute_Label: desc Attribute_Definition: Written description or explanation of linear geologic unit. Entity_Type: Entity_Type_Label: quib24k.pat Entity_Type_Definition: Descriptions of the items identifying geologic units in the polygon attribute table Attribute: Attribute_Label: unit Attribute_Definition: Numeric code used to identify the rock unit which is described in the QUIB24K.RU look-up table. (This item also occurs in the QUIB24K.RU look-up table.) Attribute: Attribute_Label: source Attribute_Definition: Numeric code used to identify the data source for the rock unit. Complete references for the sources are listed in the QUIB24KK.REF file. Attribute: Attribute_Label: label-alpha Attribute_Definition: Rock unit label (abbreviation) used to label unit on map using standard alpha characters. (This item was joined from the QUIB24K.RU look-up table.) Attribute: Attribute_Label: desc Attribute_Definition: Formal or informal unit name. (This item was joined from the QUIB24K.RU look-up table.) Attribute: Attribute_Label: surf_unit Attribute_Definition: Numeric code used to identify the surficial rock that is described in the QUIB24K.RU look-up table under the item unit. (The item surf_unit does not occur in QUIB24K.RU.) The attribute values for surf_unit are a subset of the attribute values for unit. This item, surf_unit, is attributed only when the underlying bedrock has been identified. Attribute: Attribute_Label: surf_label Attribute_Definition: Surficial rock unit label (abbreviation). Attribute: Attribute_Label: surf_desc Attribute_Definition: Formal or informal surficial rock unit name. (This item was joined from the desc iten in QUIB24K.RU look-up table) Attribute: Attribute_Label: bedrock Attribute_Definition: Numeric code used to identify the bedrock that is described in the QUIB24K.RU look-up table under the item unit. (The item bedrock does not occur in QUIG24K.RU.) The attribute values for bedrock are a subset of the attribute values for unit. This item, bedrock, is attributed only when the underlying bedrock has been identified. Attribute: Attribute_Label: bed_label Attribute_Definition: Bedrock unit label (abbreviation). Attribute: Attribute_Label: bed_desc Attribute_Definition: Formal or informal bedrock unit name. (This item was joined from the desc item in QUIB24K.RU look-up table. Entity_Type: Entity_Type_Label: quib24k.ru Entity_Type_Definition: Attribute descriptions for items in the lithology (rock unit) look-up table Attribute: Attribute_Label: unit Attribute_Definition: Numeric code used to identify rock unit. (This item also occurs in QUIB24K.PAT.) Attribute: Attribute_Label: label Attribute_Definition: Rock unit label (abbreviation) used to label unit on map. This item was calculated equal to "label-gaf" descriptions for items in the lithology (rock unit) look-up table Attribute: Attribute_Label: symbol Attribute_Definition: Shadeset symbol number used by ArcInfo to plot a filled/ shaded polygon. The symbol numbers used in this file refer to the WPGCMYK.SHD shadeset. Attribute: Attribute_Label: label-alpha Attribute_Definition: Rock unit label (abbreviation) Attribute: Attribute_Label: label-gaf Attribute_Definition: Rock unit label (abbreviation) that uses the GeoAgeFullAlpha font, ver. 1.1 (Richard Koch, personal commun., 2001) Attribute: Attribute_Label: name Attribute_Definition: The prefix portion of the rock unit label that does not include subscripts. (If subscripting is not used in the original unit label, then the "name" entry is the same as the "label" entry.) Attribute: Attribute_Label: ss Attribute_Definition: The suffix portion of the geologic unit label that includes subscripts. Attribute: Attribute_Label: lith Attribute_Definition: Major type of lithostratigraphic unit, for example, unconsolidated sediments, sedimentary rocks, metasedimentary rocks, intrusive rocks, extrusive rocks, metamorphic rocks, water, ice. Attribute: Attribute_Label: desc Attribute_Definition: Formal or informal unit name Attribute: Attribute_Label: minage Attribute_Definition: Minimum stratigraphic age of lithologic unit, for example, CRET, TERT, M PROT. Attribute: Attribute_Label: maxage Attribute_Definition: Maximum stratigraphic age of lithologic unit Attribute: Attribute_Label: Attribute_Definition: Detailed description of rock unit Attribute: Attribute_Label: desc2 Attribute_Definition: Detailed description of rock unit (continued from desc1, if needed) Attribute: Attribute_Label: desc3 Attribute_Definition: Detailed description of rock unit (continued from desc2, if needed) Entity_Type: Entity_Type_Label: quib24kp.pat Entity_Type_Definition: Descriptions of the items identifying geologic map symbols are given in the point attribute table Attribute: Attribute_Label: pnttype Attribute_Definition: Basic type of geologic point data being represented (for example, inclined foliation, fault attitude, etc). (This item also occurs in the QUIB24KP.SYM file.) Attribute: Attribute_Label: symbol Attribute_Definition: Marker symbol number used by ArcInfo to identify type of geologic map symbol. Symbol numbers refer to the SCAMP2D.MRK markerset (Matti and others, 1997). (This item also occurs in the QUIB24KP.SYM file.) Attribute: Attribute_Label: strike Attribute_Definition: Strike of bedding, foliation or cleavage. Strike is an azimuthal angle (measured in degrees from 0 to 360 in a clockwise direction from North). Attribute: Attribute_Label: dip Attribute_Definition: Dip of bedding, foliation or cleavage. This value is an angle measured (in degrees from 0 to 90) down from the horizontal; thus a horizontal dip is 0 degrees and a vertical dip is 90 degrees. Attribute: Attribute_Label: ai_ang Attribute_Definition: An interim value used to calculate sym$angle. The various structural map symbols in the SCAMP2D.MRK markerset (Matti and others, 1997) had to be rotated by different amounts to achieve their proper map orientation. For the strike and dip symbols, ai_ang = strike -270. Attribute: Attribute_Label: sym$ang Attribute_Definition: The angle used to complete the mathematical rotation of the structural map symbol to its proper orientation on the map. The various point symbols in the SCAMP2D.MRK markerset (after Matti and others, 1997) had to be rotated by different amounts to achieve their proper map orientation. This value is the $angle pseudoitem value for the point. Attribute: Attribute_Label: source Attribute_Definition: Numeric code used to identify the data source for the structural map symbol. Complete references for the sources are listed in the QUIB24KP.REF file. Entity_Type: Entity_Type_Label: quib24kp.sym Entity_Type_Definition: Attribute descriptions for items in the geologic map symbols look-up table Attribute: Attribute_Label: pnttype Attribute_Definition: Type of point symbol, for example, strike and dip of inclined bedding, strike and dip of inclined cleavage. This item also occurs in the QUIB24KP.PAT file.) Attribute: Attribute_Label: symbol Attribute_Definition: Marker symbol number used by ArcInfo to identify type of structural map symbol. Symbol numbers refer to the SCAMP2D.MRK markerset (Matti and others, 1997). descriptions for items in the geologic map symbols look-up table Attribute: Attribute_Label: desc Attribute_Definition: Written description or explanation of map symbol. Entity_Type: Entity_Type_Label: quib24k.ref and quib24kp.ref Entity_Type_Definition: Descriptive source or reference information for the quib24k and quib 24kp ArcInfo datasets Attribute: Attribute_Label: source Attribute_Definition: Numeric code used to identify the data source. (This item also occurs in the QUIB24K.AAT, QUIB24K.PAT, and QUIB24KP.PAT files.) Attribute: Attribute_Label: scale Attribute_Definition: Scale of source map. (This value is the denominator of the proportional fraction that identifies the scale of the map that was digitized or scanned to produce the digital map.) Attribute: Attribute_Label: authors Attribute_Definition: Author(s) or compiler(s) of source map entered as last name, first name or initial, and middle initial. Attribute: Attribute_Label: year Attribute_Definition: Source (map) publication date Attribute: Attribute_Label: reference Attribute_Definition: Remainder of reference in USGS reference format. Overview_Description: Entity_and_Attribute_Overview: The "Spatial Digital Database for the Geology of the San Pedro River Basin in Cochise, Gila, Graham, Pima, and Pinal Counties, Arizona" report (quib24k.pdf) contains a detailed description of each attribute code and a reference to the associated map symbols in the map source materials. The database includes a geologic linework arc attribute table, quib24k.aat, that relates to the quib24k.co3 (contact look-up table), quib24k.st2 (structure look-up table), quib24k.lgu (linear geologic units look-up table), and quib24k.ref (source reference look-up table) files and a rock unit polygon attribute table, quib24k.pat, that relates to the quib24k.ru (rock unit look-up table) and quib24k.ref (source reference look-up table) files. Associated with this database is a geologic marker point attribute table, quib24kp.pat that relates to quib24kp.sym (symbol description look-up table) and quib24kp.ref (source reference look-up table). Entity_and_Attribute_Detail_Citation: See the of02-393.pdf file (available at http://geopubs.wr.usgs. gov/open-file/of02-393) for detailed description of items in this database. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: electronic Address: http://geopubs.wr.usgs.gov/open-file/of02-393 Contact_Instructions: This report is available only in an electronic format at the following URL Distribution_Liability: The U.S. Geological Survey (USGS) provides these geographic data "as is." The USGS makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. The USGS further makes no warranties, either expressed or implied, as to any other matter whatsoever, including, without limitation, the condition of the product or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers at the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall the USGS have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by USGS. The digital geologic map GIS of the Quiburis Formation and adjacent units is not meant to be used or displayed at any scale larger than 1:24,000 (for example, 1:12,000 or 1:2,000). Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE; TAR Format_Information_Content: This spatial digital database includes a geologic linework arc attribute table, quib24k.aat, that relates to the quib24k.co3, quib24k.st3, quib24k.lgu, and quib24k.ref files and a rock unit polygon attribute table, quib24k.pat, that relates to the quib24k.ru and quib24k.ref files. There is also an associated point table, quib24kp.pat, that relates to quib24kp.sym and quib24k.ref. Other files associated with labeling and symbols are also included. Quib24k.pdf contains a complete list of files. A set of the same coverages in geographic format (quib24kg) is also part of the package. File_Decompression_Technique: Files need to be extracted from the TAR archive and .e00 files must be imported into ArcInfo, ArcView, or other software that can manage export files. An .AML file is provided to assist in the import process. Transfer_Size: 16.1 megabytes Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Access_Instructions: To obtain copies of the digital data, do one of the following: 1. Download the digital files from the USGS public access World Wide Web site on the Internet: URL = http://geopubs.wr.usgs.gov/open-file/of02-393/ 2. Anonymous FTP from geopubs.wr.usgs.gov. in the directory pub/open-file/of02-393 Fees: none Metadata_Reference_Information: Metadata_Date: 20021010 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Karen Sue Bolm Contact_Position: Physical Scientist Contact_Address: Address_Type: mailing and physical address Address: 520 North Park Avenue #355 City: Tucson State_or_Province: AZ Postal_Code: 85719 Country: USA Contact_Voice_Telephone: (520) 670-5544 Contact_Facsimile_Telephone: (520) 670-5113 Contact_Electronic_Mail_Address: kbolm@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: none Metadata_Use_Constraints: none