Spatial Digital Database of the Geologic Map of Catalina Core Complex and San Pedro Trough, Pima, Pinal, Gila, Graham, and Cochise Counties, Arizona By William R. Dickinson1 Digital database by Douglas M. Hirschberg1, G. Stephen Pitts1, and Karen S. Bolm2 Open-File Report 02-365 Digital database version 1.0 Prepared in cooperation with the University of Arizona 2002 (map originally published in 1992) Approved for publication September 20, 2002 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. The digital database is not meant to be used or displayed at any scale larger than 1:125,000 (for example, 1:100,000 or 1:24,000). U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY Table of Contents INTRODUCTION 3 LIST OF MAP UNITS 3 STRATIFIED ROCK UNITS 3 INTRUSIVE ROCK UNITS 8 DATA SOURCES, PROCESSING, AND ACCURACY 9 GIS DOCUMENTATION 9 LINEAR FEATURES 11 AREAL FEATURES 12 POINT FEATURES 14 SOURCE ATTRIBUTES 15 OBTAINING DIGITAL DATA 15 OBTAINING PAPER MAPS 16 REFERENCES CITED 16 APPENDIX A - LIST OF DIGITAL FILES IN THE CATALINA CORE COMPLEX AND SAN PEDRO TROUGH GIS 17 APPENDIX B - METADATA FILE (CCC125K.MET) FOR CATALINA CORE COMPLEX AND SAN PEDRO TROUGH GIS 18 List of Figures Figure 1. Index map showing the geographic extent of the spatial digital database 4 Figure 2. Explanation for the simplified geologic map of Catalina Core Complex and San Pedro Trough, Arizona 5 Figure 3. Simplified geologic map of Catalina Core Complex and San Pedro Trough, Arizona 6 Figure 4. Relationships between feature attribute tables and look-up tables. 10 Introduction The geologic map of Catalina Core Complex and San Pedro Trough by Dickinson (1992) was digitized for input into a geographic information system (GIS) by the U.S. Geological Survey staff and contractors in 2000-2001. This digital geospatial database is one of many being created by the U.S. Geological Survey as an ongoing effort to provide geologic information in a geographic information system (GIS) for use in spatial analysis. The resulting digital geologic map database data can be queried in many ways to produce a variety of geologic maps and derivative products. Digital base map data (topography, roads, towns, rivers, lakes, and so forth) are not included; they may be obtained from a variety of commercial and government sources. This database is not meant to be used or displayed at any scale larger than 1:125,000 (for example, 1:100,000 or 1:24,000). The digital geologic map plot files (ccc-map. pdf, ccc-map.rtl) that are provided herein are representations of the database. The map area is located in southern Arizona (fig. 1). Figure 2 is a simplified page size list of the map units, and figure 3 is a page size plot of a generalized map of this database. This report lists the geologic map units, the methods used to convert the geologic map data into a digital format, the ArcInfo GIS file structures and relationships, and explains how to download the digital files from the U.S. Geological Survey public access World Wide Web site on the Internet. The manuscript and digital data review by Lorre Moyer (USGS) is greatly appreciated. List of Map Units This list of map units was derived from Dickinson (1992). Stratified Rock Units Qal Alluvium (Quaternary)-Stream valley alluvium (shown along San Pedro and Gila Rivers only) Nbf Basin fill (Neogene)-Dissected basin fill (Quiburis Formation and correlatives), together with overlying terrace and pediment gravel sheets and local alluvium Tsm San Manuel Formation (lower Miocene) of the San Pedro Trough-Undifferentiated Tsmk Kannally Member Tsmt Tucson Wash Member Tsz Soza Canyon facies (volcanic clasts) Tsk Kelsey Canyon facies (granitic clasts) Supply the EPS file for this figure in the digital data package, so that a section-508 compliant PDF can be made. Replace this page with a paper printout of the file fig1_indx.eps for review purposes Replace this page with the file fig1_indx.pdf for web-only publication Figure 1. Index map showing the geographic extent of the Catalina Core Complex and San Pedro Trough (shaded fill) with respect to Arizona counties Supply the EPS file for this figure in the digital data package, so that a section-508 compliant PDF can be made. Replace this page with a paper printout of the file fig2_key.eps for review purposes Replace this page with the file fig2_key.pdf for web-only publication Figure 2. Explanation for the simplified geologic map of Catalina Core Complex and San Pedro Trough, Arizona Supply the EPS file for this figure in the digital data package, so that a section-508 compliant PDF can be made. Replace this page with a paper printout of the file fig3_map.eps for review purposes Replace this page with the file fig3_map.pdf for web-only publication Figure 3. Simplified geologic map of Catalina Core Complex and San Pedro Trough, Arizona Tsp Paige Canyon facies (metamorphic clasts) Tpa Pantano Formation (Oligocene-Miocene) of Cienega Gap and Tucson Basin Tcs Cloudburst Formation (Upper Oligocene to Lower Miocene) of the San Pedro Trough-sedimentary upper member Tch Hackberry Wash facies Tcv volcanic lower member Ttv Tertiary volcanics (Oligocene) of the Tucson Mountains Tgv Galiuro Volcanics (Upper Oligocene) Tgw basal "Whitetail Conglomerate" Tmi Mineta Formation (Oligocene) of Caņada Atravesada and Teran Basin Kcv Cat Mountain Rhyolite (Upper Cretaceous to Paleocene?)-Volcanic and sedimentary rocks Kaf American Flag Formation (Upper Cretaceous to Paleocene?)-Volcanic and sedimentary rocks Kcs Cascabel Formation (Upper Cretaceous to Paleocene?)-Volcanic and sedimentary rocks Kmv Muleshoe Volcanics (Upper Cretaceous to Paleocene?)-Volcanic and sedimentary rocks Kgv Glory Hole Volcanics (Upper Cretaceous to Paleocene?)-Volcanic and sedimentary rocks Kwv Williamson Canyon Volcanics (Upper Cretaceous to Paleocene?)-Volcanic and sedimentary rocks Kp Pinkard Formation (Upper Cretaceous) Kb Bisbee Group (Lower Cretaceous) Km metamorphosed Jr Recreation Redbeds (mid-Jurassic?) Jw Walnut Gap Volcanics (mid-Jurassic?)-Red beds |s Paleozoic (Cambrian to Permian) strata |m metamorphosed Paleozoic strata Ys Apache Group and Troy Quartzite (Proterozoic)-Includes intrusive diabase sills and dikes Xp Pinal Schist (Proterozoic)-Dominantly metasedimentary rocks Intrusive Rock Units Tir rhyolitic plugs and dikes Tgt Tortolita granitic pluton Tgf Fortified Peak pluton Tgc Catalina granitic pluton Tw Wilderness granite suite (Eocene)-Two-mica granite Twm mylonitic two-mica granite Kgc Copper Creek Granodiorite (Upper Cretaceous to Paleocene?) Kdi Diorite-Semitabular dioritic bodies (Upper Cretaceous to Paleocene?) Krp Rice Peak granodiorite porphyry (Upper Cretaceous to Paleocene?) Kgp granitic porphyry dikes and sills (Upper Cretaceous to Paleocene?) Kgh Chirreon Wash granodiorite (Upper Cretaceous to Paleocene?) Kgl Leatherwood quartz diorite (Upper Cretaceous to Paleocene?) Kgr Rattler Granodiorite (Upper Cretaceous to Paleocene?) Kgt Tortilla Quartz Diorite (Upper Cretaceous to Paleocene?) Kga Amole granitic pluton (Upper Cretaceous to Paleocene?) Yo Oracle/Ruin granite suite (Middle Proterozoic) Yom mylonitic Oracle/Ruin granite suite Yg Granodiorite (Precambrian) Yd Diorite (Precambrian) Xj Johnny Lyon granodiorite suite (Lower Proterozoic) Xjm mylonitic Johnny Lyon granodiorite suite (Lower Proterozoic) Data Sources, Processing, and Accuracy Staff and contractors at the U.S. Geological Survey Southwest Field Office (Tucson, Arizona) scanned the published paper map by Dickinson (1992), digitized the line, polygon, and point features, edited the digital files, standardized the database to an interim version, and then plotted and compared the digital map with the original published map to check for digitizing and attributing errors. Processing at the U.S. Geological Survey was done in ArcInfo version 7.2.1 installed on a Sun Ultra 2 workstation. The overall accuracy (with respect to the location of features) of the spatial digital database (see figures 2 and 3 for page-size versions) is probably no better than +/- 100 meters. This digital database is not meant to be used or displayed at any scale larger than 1:125,000 (for example, 1:100,000 or 1:24,000). GIS Documentation The digital geologic database of the Catalina Core Complex and San Pedro Trough includes two ArcInfo datasets (CCC125K and CCCPNT). The CCC125K dataset contains linear geologic data (arcs) for contacts, faults, and folds; areal geologic data (polygons) for rock units; and regions for allochthons. It has an arc attribute table, CCC125K.AAT, that relates to the CCC125K.CON, CCC125K.ST2 and CCC125K.REF look-up tables. It has a polygon attribute table, CCC125K.PAT, which relates to the CCC125K.RU and CCC125K.REF look-up tables. And it also has a polygon-region attribute table, CCC125K.PATALLOCH, that relates to the CCC125K.REF look-up table. The CCCPNT dataset contains geologic point data for bedding, foliation, and fault attitudes. It has a point attribute table, CCCPNT.PAT, that relates to the CCCPNT.REF look-up table. These data files are described below. Figure 4 shows the relationships between the feature attribute tables and the look-up tables. Arc attribute table and related look-up tables: ccc125k.aat linecode name source orig_desc ccc125k.con linecode symbol type modifier certainty desc ccc125k.st2 linecode symbol type horizontal vertical fold plunge accuracy certainty desc ccc125k.ref source scale authors year reference Polygon attribute table and related look-up tables: ccc125k.pat unit label-alpha source desc ccc125k.ru unit label symbol label-alpha label-gaf name ss lith desc minage maxage ccc125k.patalloch name source ccc125k.ref source scale authors year reference Point attribute table and related look-up table: cccpnt.pat pttype symbol strike dip ai_ang sym$ang source cccpnt.ref source scale authors year reference Figure 4: Relationships between feature attribute tables and look-up tables. Linear Features Descriptions of the items identifying linear features such as contacts, boundaries (for example, lines of latitude and longitude, state boundaries) and structures in the arc attribute table, ccc125k.aat, are as follows: ccc125k.aat ITEM NAME ITEM TYPE ITEM LENGTH ATTRIBUTE DESCRIPTION linecode integer 3 Numeric code used to identify type of linear feature. Linecodes < 100 are used for contacts and boundaries which are described in the ccc125k.con file. Linecodes > 100 and < 600 represent structural features which are described in the ccc125k.st2 file. name character 36 Name given to structural feature. source integer 4 Numeric code used to identify the data source for the linear feature. Complete references for the sources are listed in the ccc125k.ref file. orig_desc character 150 Original description of linear feature from Dickinson (1992). Faults described by Dickinson (1992) as "plated" were coded as thrust faults in this database. Attribute descriptions for items in the contact (and boundary) look-up table, ccc125k.con (for use with the geol_dia.lin lineset), are as follows: ccc125k.con ITEM NAME ITEM TYPE ITEM LENGTH ATTRIBUTE DESCRIPTION linecode integer 3 Numeric code (a value < 100) used to identify type of contact or boundary. (This item also occurs in ccc125k.aat.) symbol integer 3 Line symbol number used by ArcInfo to plot lines. Symbol numbers refer to the geol_dia.lin lineset type character 10 Major type of line, for example, contact, state boundaries, lines of latitude and longitude used for neatlines. modifier character 20 Line type modifier, that is, approximate, concealed, gradational. No entry implies 'known.' certainty character 15 Degree of certainty of contact or boundary, that is, inferred, uncertain. No entry implies 'certain.' desc character 100 Written description or explanation of contact or boundary. Attribute descriptions for items in the structure look-up table, ccc125k.st2 (for use with the geol_dia.lin lineset), are as follows: ccc125k.st2 ITEM NAME ITEM TYPE ITEM LENGTH ATTRIBUTE DESCRIPTION linecode integer 3 Numeric code (a value > 100 and < 600) used to identify type of structural feature. (This item also occurs in ccc125k.aat.) symbol integer 3 Line symbol number used by ArcInfo to plot arcs. Symbol numbers refer to the geol_dia.lin lineset. type character 10 Major type of structure, i.e., fault, fracture, fold, other. horizontal character 20 Type of horizontal fault movement, for example, left-lateral, right-lateral. No entry implies 'unknown.' vertical character 20 Type of vertical fault movement, for example, normal. No entry implies 'unknown.' fold character 15 Type of fold, for example, anticline, syncline. plunge character 15 Type of plunge on fold, that is, horizontal, plunging, plunging in, plunging out. No entry implies 'unknown'. accuracy character 15 Line type modifier indicating degree of accuracy, that is, approximately located, concealed, gradational. No entry implies 'known.' certainty character 15 Degree of certainty of contact or boundary, that is, inferred, uncertain. No entry implies 'certain.' desc character 100 Written description or explanation of structural feature. Areal Features Descriptions of the items identifying geologic units in the polygon attribute table, ccc125k.pat, are as follows: ccc125k.pat ITEM NAME ITEM TYPE ITEM LENGTH ATTRIBUTE DESCRIPTION unit integer 4 Numeric code used to identify the rock unit, which is described in the ccc125k.ru look-up table. (This item also occurs in ccc125k.ru.) label-alpha character 10 Rock unit label (abbreviation) used to label unit on map with standard alphabetic characters. (This item was joined from the ccc125k.ru look-up table.) source integer 4 Numeric code used to identify the data source for the rock unit. Complete references for the sources are listed in the ccc125k.ref file. desc character 250 Formal or informal unit name. (Values for this item were joined from the ccc125k.ru look-up table). Attribute descriptions for items in the lithology (rock unit) look-table, CCC125K.RU (for use with the WPGCMYK.SHD shadeset), are as follows: ccc125k.ru ITEM NAME ITEM TYPE ITEM LENGTH ATTRIBUTE DESCRIPTION unit integer 4 Numeric code used to identify rock unit. (This item also occurs in ccc125k.pat.) label character 10 Rock unit label (abbreviation) used to label unit on the map. This item was calculated equal to 'label-gaf'. symbol integer 3 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. label-alpha character 10 Rock unit label (abbreviation) for use with standard alphabetic characters (for example, PZ for Paleozoic). label-gaf character 10 Rock unit label (abbreviation) that uses the geoageFullAlpha font, version 1.1. name character 7 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-alpha' entry.) ss character 3 The suffix portion of the geologic unit label that includes subscripts. No entry implies no subscript. lith character 20 Major type of lithostratigraphic unit, that is, unconsolidated sediments, sedimentary rocks, metasedimentary rocks, intrusive rocks, extrusive rocks, metamorphic rocks, water, ice. desc character 250 Formal or informal unit name minage character 7 Minimum stratigraphic age of lithologic unit, for example, CRET - Cretaceous, TERT - Tertiary, PREC - Precambrian. maxage character 7 Maximum stratigraphic age of lithologic unit Descriptions of the items identifying allochthons in the polygon-region attribute table, ccc125k.patalloch, are as follows: ccc125k.patalloch ITEM NAME ITEM TYPE ITEM LENGTH ATTRIBUTE DESCRIPTION name character 50 Name given to allochthon. source integer 4 Numeric code used to identify the data source for the allochthon. Complete references for the sources are listed in the ccc125k.ref file. Point Features Descriptions of the items identifying geologic map symbols are given in the point attribute table, cccpnt.pat, which is defined as follows: cccpnt.pat ITEM NAME ITEM TYPE ITEM LENGTH ATTRIBUTE DESCRIPTION pttype character 30 Basic type of geologic point data being represented (for example, inclined foliation, fault attitude, etc.) symbol integer 3 Marker symbol number used by ArcInfo to symbolize the point feature. Symbol numbers refer to the scamp2d.mrk markerset (after Matti and others, 1997). strike integer 3 Strike of bedding, foliation, or cleavage. Strike is an azimuth angle (measured in degrees from 0 to 360 in a clockwise direction from North). dip integer 2 Dip of bedding, foliation, 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. ai_ang integer 4 The ArcInfo equivalent to the strike. This value is measured counter-clockwise from east. An interim value used to calculate sym$angle sym$ang integer 4 The angle used to complete the mathematical rotation of the point 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 also the $angle pseudoitem value for the point. source integer 4 Numeric code used to identify the data source for the structural map symbol. Complete references for the sources are listed in the cccpnt.ref file. Source Attributes Descriptive source or reference information for the ccc125k and cccpnt ArcInfo datasets is stored in the ccc125k.ref and cccpnt.ref files, respectively. Attribute descriptions for items in the ccc125k.ref and cccpnt.ref data source files are as follows: ccc125k.ref and cccpnt.ref ITEM NAME ITEM TYPE ITEM LENGTH ATTRIBUTE DESCRIPTION source integer 4 Numeric code used to identify the data source. (This item also occurs in the ccc125k.aat, ccc125k.pat, and cccpnt.pat files.) scale integer 8 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.) authors character 200 Author(s) or compiler(s) of source map entered as last name, first name or initial, and middle initial. year integer 4 Source (map) publication date reference character 250 Remainder of reference in USGS reference format. Obtaining Digital Data The digital version of the geologic map is available in ArcInfo exchange (*.e00) format (see Appendix A). These data are being published and this product is a stand-alone product (Dickinson and others, 2002, ver. 1.0). These data are maintained in a Universal Transverse Mercator map projection: Projection: UTM Zone: 12 Datum: NAD27 Units: meters Spheroid: Clarke1866 Note that this projection can also be described in the following manner: Projection: Transverse Mercator scale factor at central meridian: 0.999600 longitude of central meridian -111.0000 latitude of origin 0.0000 false easting (meters) 500000.0000 false northing (meters) 0.0000 To obtain copies of the digital data, do one of the following: Download the digital files from the USGS public access World Wide Web site on the internet: URL = http://geopubs.wr.usgs.gov/open-file/of02-365 or 2. Anonymous FTP from geopubs.wr.usgs.gov, in the directory: pub/open-file/of02-365 The Internet sites contain the digital geologic map both as ArcInfo interchange-format files (*.e00) and as plot files (ccc-map.pdf/.eps) (see Appendix A). To utilize the spatial database you must have a GIS that is capable of reading ArcInfo interchange-format files. Obtaining Paper Maps Paper copies of the digital geologic map are not available from the U.S. Geological Survey. However, with access to the Internet and access to a large-format color plotter that can interpret either PDF (portable document format) , or EPS (encapsulated postscript) files, a 1:125,000-scale paper copy of the map can be made, as follows: 1. Download the digital version of the map, ccc-map.pdf or ccc-map.eps, from the USGS public access World Wide Web site on the Internet using the URL = http://geopubs.wr.usgs.gov/open-file/of02-365 or 2. Anonymous FTP the plot file, ccc-map.pdf or ccc-map.eps, from: geopubs.wr.usgs.gov, in the directory: pub/open-file/of02-365 3. This file can be plotted by any large-format color plotter that can interpret EPS or PDF files. The finished plot is about 34.5 inches wide by 50 inches tall (specify 36 inches by 60 inches to allow for margins). References Cited Dickinson, William R., 1992, Geologic map of Catalina Core Complex and San Pedro Trough, Pima, Pinal, Gila, Graham, and Cochise Counties, Arizona: Arizona Geological Survey Contributed Map CM-92-C, 1 plate, scale 1:125,000. Matti, J.C., Miller, F.K., Powell, R.E., Kennedy, S.A., Bunyapanasarn, T.P., Koukladas, C., Hauser, R.M., and Cossette, P.M., 1997, Geologic-point attributes for digital geologic-map data bases produced by the Southern California Areal Mapping Project (SCAMP): U.S. Geological Survey Open-File Report 97-859, 7 p. Appendix A - List of digital files in the Catalina Core Complex and San Pedro Trough GIS --Use import.aml to import all the *.e00 files for use in ArcInfo. Report text in portable document format: * ccc125k.pdf Primary ArcInfo interchange-format (*.e00) and metadata (*.met) files for the digital geology: * ccc125k.e00 - line and poly GIS * cccpnt.e00 - point GIS * ccc125k.met - metadata Adobe portable document format (*.pdf) and encapsulated postscript (*.eps) plot files for the geologic map sheet: * ccc-map.pdf * ccc-map.eps ArcInfo AML to setup the GIS: * import.aml - macro program to automatically import ArcInfo (*.e00) files Appendix B - Metadata file (ccc125k.met) for Catalina Core Complex and San Pedro Trough GIS Identification_Information: Citation: Citation_Information: Originator: William R. Dickinson, University of Arizona Originator: Douglas M. Hirschberg, University of Arizona Originator: G. Stephen Pitts, University of Arizona Originator: Karen S. Bolm, U.S. Geological Survey Publication_Date: 2001 Title: Spatial Digital Database of the Geologic Map of Catalina Core Complex and San Pedro Trough, Pima, Pinal, Gila, Graham, and Cochise Counties, Arizona Edition: Version 1.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Open-File Report Issue_Identification: 02-365 Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey Online_Linkage: Description: Abstract: A paper copy of the Geologic Map of the Catalina Core Complex and San Pedro Trough (Dickinson, 1992) was scanned and digitized by U.S. Geological Survey staff and contractors at the Southwest Field Office (Tucson, AZ) in 2000-2001 for input into an ArcInfo geographic information system (GIS). The resulting geologic map database (in ArcInfo format) can be queried in many ways to produce a variety of geologic maps. Digital base map data files. (topography, roadways, towns, and hydrography) are not included: they may be obtained from a variety of commercial and government sources. Geologic map graphics and plot files that are provided in the Open-File Report are representations of the digital database and are not designed to be cartographic products. All datasets and associated files are available on the Internet at http://geopubs.wr.usgs.gov/open-file/of02-365 Purpose: This database was constructed to provide a geologic map GIS for use in spatial analysis by a variety of users. The digital geologic database can be queried in many ways to produce a variety of derivative geologic maps. The data are not meant to be used at any scale larger than 1:125,000 (for example, 1:100,000 or 1:24,000) Supplemental_Information: This database consists of two major ArcInfo datasets. The CCC125K dataset contains arc features representing geologic contacts, faults, and folds; polygon features representing geologic rock (map) units; and regions representing allochthons. The CCCPNT dataset contains point features representing geologic point data of bedding, foliation, and fault attitude. The datasets and related INFO look-up tables have been "exported" into ArcInfo interchange files with a .e00 file extension and will need to be imported for use. Lower case letters are consistently used in naming datasets and other files although they may be listed in uppercase letters for emphasis in this document and the Open-File Report it accompanies. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2002 Currentness_Reference: September 20, 2002 Status: Progress: Complete Maintenance_and_Update_Frequency: None Planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -111.2 East_Bounding_Coordinate: -110.1 North_Bounding_Coordinate: 33.1 South_Bounding_Coordinate: 31.9 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: geology Theme_Keyword: geologic map Place: Place_Keyword_Thesaurus: none Place_Keyword: United States of America Place_Keyword: Arizona Place_Keyword: Pima County Place_Keyword: Pinal County Place_Keyword: Gila County Place_Keyword: Graham County Place_Keyword: Cochise County Access_Constraints: none Use_Constraints: This digital database is not meant to be used or displayed at any scale larger than 1:125,000 (for example, 1:100,000 or 1:24,000). Any hardcopies utilizing these datasets shall clearly indicate their source. If users modify the data in any way they are obligated to describe on the hardcopy map the types of modifications they have performed. Users specifically agrees not to misrepresent these datasets, nor to imply that changes they made were approved by the U.S. Geological Survey. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Mark Gettings Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: USGS Geologic Division DeConcini Environmental and Natural Resources Bldg. 520 North Park Ave., Room 357 University of Arizona City: Tucson State_or_Province: AZ Postal_Code: 85719-5035 Country: USA Contact_Voice_Telephone: 520-670-5507 Contact_Facsimile_Telephone: 520-670-5571 Contact_Electronic_Mail_Address: mgetting@usgs.gov Data_Set_Credit: D.M. Hirschberg (University of Arizona), G.S. Pitts (University of Arizona), and K.S. Bolm (USGS), scanned Dickinson's (1992) geologic map; registered the resulting image; digitized the arcs and points; captured and positioned the annotation, attributed the arcs, polygons, and points; defined and populated the look-up tables; prepared the data model; wrote the metadata; and produced the Open-File Report text. See the Process_Step sections for more details on these steps. Native_Data_Set_Environment: SunOS, 5.6, sun4u UNIX, ArcInfo version 7.2.1 and Microsoft Windows 2000, ArcInfo version 8.1 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Attribute accuracy was verified by manual comparison of Dickinson's (1992) map with hard copy printouts. Logical_Consistency_Report: All lines and points on the source map representing geologic features were digitized as arcs (line segments) or points. These features were digitized once. Lines intersect only where intended. Overshoots (dangling arcs) and undershoots are present as represented in Dickinson's (1992) map. Line segments are a set of sequentially numbered coordinate pairs. No duplicate features exist nor duplicate points in a data string. Intersecting lines are separated into individual line segments at the point of intersection. Polygon and chain-node topology present. All polygons have a label. All polygons close. Polygons intersecting the neatline are closed along the border. Segments making up the outer and inner boundaries of a polygon tie end-to-end to completely enclose the area. Point data are represented by two sets of coordinate pairs, each with the same coordinate values. All nodes are represented by a single coordinate pair which indicates the beginning or end of a line segment. Completeness_Report: None of the base map data (roads, washes, etc.) from Dickinson's (1992) map were digitized nor are represented in this database. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The horizontal positional accuracy is probably no better than +/- 100 meters. The base for Dickinson's (1992) map is believed to be two U. S. Geological Survey 1:250,000 scale sheets spliced at the 32nd degree parallel and enlarged in scale to 1:125,000. Inaccuracies in the digital data would include inherent errors in Dickinson's (1992) map. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Dickinson, W.R. Publication_Date: 1992 Title: Geologic map of Catalina Core Complex and San Pedro Trough Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Contributed Map Issue_Identification: CM-92-C Publication_Information: Publication_Place: Tucson, AZ Publisher: Arizona Geological Survey Source_Scale_Denominator: 125,000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1992 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Dickinson (1992) Source_Contribution: geologic features; contacts, faults, folds, point observations, and rock units. Process_Step: Process_Description: A paper copy of the geologic map (Dickinson, 1992) map was obtained and scanned at 300 dpi to create an 8-bit grayscale TIFF. The TIFF was registered to an ArcInfo coverage (dataset) of tics which had been mathematically generated in ArcInfo then projected to the Universal Transverse Mercator (UTM) projection. Process_Date: 2000 Process_Step: Process_Description: A dataset (CCC125K) with arc and polygon topology was created from the same mathematically generated and projected set of tics. Items (fields) were added to its arc attribute table (.aat) and polygon attribute table (.pat) as needed. Process_Date: 2000 Process_Step: Process_Description: Arcs were digitized and attributed on-screen in a 'heads-up' fashion with the image of the geologic map (Dickinson, 1992) as background. Each arc was attributed as soon as it was digitized. Attribute selections were entered via an on-screen menu for quality control purposes. Process_Date: 2000 Process_Step: Process_Description: Check plots on mylar were produced for each sector. First, generic line symbols were used to proof the locational fidelity of the linework to Dickinson (1992). Later, check plots with symbolized lines were produced to check for attributional fidelity to the source map. Updates to the CCC125K dataset were made as needed. Process_Date: 2000 Process_Step: Process_Description: Polygon topology was re-built. Polygons were attributed in the 'heads-up' fashion mentioned previously. Process_Date: 2000 Process_Step: Process_Description: Check plots were produced to proof for polygon attributional fidelity to Dickinson (1992). Polygons were edited as needed. Process_Date: 2000 Process_Step: Process_Description: An ArcInfo dataset (CCCPNT) with point topology was created. Items were added to the dataset's point attribute table (.pat) as needed. Process_Date: 2000 Process_Step: Process_Description: Points were digitized and attributed in the same 'heads-up' fashion. Check plots were produced to proof locational, rotational, and other attributional qualities of the points. Process_Date: 2000 Process_Step: Process_Description: Look-up tables for the CCC125K and CCCPNT datasets were defined and populated. Process_Date: 2000 Process_Step: Process_Description: Rock unit annotation was captured for the CCC125K dataset and annotation strings were repositioned as needed. Dip values were captured for the necessary points in the CCCPNT dataset and repositioned as needed. Process_Date: 2001 Process_Step: Process_Description: Arcs representing "plated" faults on the source map were re-coded as thrust faults (linecode = 171 or linecode = 173) in the arc attribute table (CCC125K.AAT). (Descriptions for the linecodes are given in the CCC125K.ST2 look-up table; however, for archival purposes, Dickinson's (1992) original line descriptions are given in the ORIG_DESC item in the CCC125K.AAT file.) Process_Date: 2001 Process_Step: Process_Description: First draft of metadata created by D.M. Hirschberg using FGDCMETA.AML ver. 1.2 05/14/98 Process_Date: 20010221 Process_Step: Process_Description: Polygons designated by Mark Gettings, U. S. Geological Survey were grouped into regions and each region was attributed with the allochthon name according to Dickinson (1992). Process_Date: 2002 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: 0.000000 False_Easting: 500000.000000 False_Northing: 0.0000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000256 Ordinate_Resolution: 0.000256 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.400000 Denominator_of_Flattening_Ratio: 294.978698 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: The Catalina Core Complex and San Pedro Trough 125k GIS includes a geologic arc attribute table, CCC125K.AAT, that relates to the CCC125K.CON (contact look-up table), CCC125K.ST2 (structure look-up table), and CCC125K.REF (source reference look-up table) files; a rock-unit polygon attribute table (CCC125K.PAT) that relates to the CCC125K.RU (rock-unit look-up table) and CCC125K.REF (source reference lookup table) files; an allochthon region attribute table, (CCC125K.PATALLOCH) that relates to the CCC125K.REF (source reference lookup table) file; and a point attribute table, CCCPNT.PAT, that relates to the CCCPNT.REF (source reference look-up table) file. Entity_and_Attribute_Detail_Citation: A detailed description of the items in the Catalina Core Complex and San Pedro Trough 125k database are given in the text of the Open-File Report 02-365 available in Adobe Acrobat PDF format on the World Wide Web at http://geopubs.wr.usgs.gov/open-file/of02-365/ Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Instructions: This report is only available in an electronic format at the following URL = http://geopubs.wr.usgs.gov/open-file/of02-365 or via anonymous FTP from geopubs.wr.usgs.gov, in the directory pub/open-file/of02-365. Distribution_Liability: The U.S. Geological Survey (USGS) provides these geograpic 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. This spatial digital database for the geologic map of Catalina Core Complex and San Pedro Trough is not meant to be used or displayed at any scale larger than 1:125,000 (for example, 1:100,000 or 1:24,000). Standard_Order_Process Digital_Form Digital_Transfer_Information Format_Name: ArcInfo Export format, Adobe PDF Format_Version_Number: ArcInfo 7.2.1 and 8.1 Format_Information_Content: Attributed line, polygon, and point data File_Decompression_Technique: No compression applied Transfer_Size: 40.5 MB Digital_Transfer_Option Online_Option Computer_Contact_Information Network_Address Network_Resource_Name: Fees: none Metadata_Reference_Information: Metadata_Date: 2001 Metadata_Review_Date: 2001 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Douglas Hirschberg Contact_Position: GIS Specialist Contact_Address: Address_Type: mailing and physical address Address: 520 N. Park Ave, Suite 355 City: Tucson State_or_Province: AZ Postal_Code: 85719 Country: USA Contact_Voice_Telephone: (520) 670-5514 Contact_Facsimile_Telephone: (520) 670-5571 Contact_Electronic_Mail_Address: dmhirsch@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 1University of Arizona, 520 N. Park Ave., Tucson, Arizona 85719 2U.S. Geological Survey, 520 N. Park Ave., Tucson, Arizona 85719 2 ccc125k.doc, Draft OFR Text, Oct-29-2002, Page 1 of 1 10 11