Identification_Information: Citation: Citation_Information: Originator: Edward A. du Bray Originator: A. Elizabeth Jones Crafford Publication_Date: 2007 Title: Modal composition and age of intrusions in north-central and northeast Nevada Edition: version 1.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Data Series Issue_Identification: 250 Publication_Information: Publication_Place: Denver, Colorado, U.S.A. Publisher: United States Geological Survey Online_Linkage: http://pubs.usgs.gov/ds/2007/250/ Description: Abstract: Data presented characterize igneous intrusions exposed in north- central and northeast Nevada, bounded by latitudes 38.5 and 42 degrees North, longitude 118.5 degrees West, and the Nevada-Utah border. The intrusion polygons were extracted from Crafford (2007), a 1:250,000-scale digital geologic map of Nevada, USGS Data Series 249. These were combined with geochronologic and compositional data compiled by Ed du Bray to provide a comprehensive look at the geochronologic and compositional information available for these rocks. Purpose: The purpose of this compilation is to provide a comprehensive compilation of the geochronologic and compositional information about these rocks that can be used to further our understanding of the geologic framework of north-central and northeast Nevada. Supplemental_Information: Shape files included in this geospatial database: CITIES_P_CLIP: point layer of cities. CTOURS2_Clip: line layer of topographic contours at a contour interval of 150 m. NEVADACOUNTIES_Project_Clip: line layer of counties. nevadarivers_Clip: line layer of drainages. ROADS_A_Clip: line layer of roads. studyarea_boundary_UTM: line layer of the "Metallogeny of the Great Basin 4-D project area" boundary. Intrusions_polyNENV: polygon layer of igneous intrusions. The Entity_and_Attribute_Information section of this metadata record describes the user-defined attributes of Intrusions_polyNENV. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2007 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -118.628456 East_Bounding_Coordinate: -113.942917 North_Bounding_Coordinate: 42.004786 South_Bounding_Coordinate: 38.458564 Keywords: Theme: Theme_Keyword_Thesaurus: American Geological Institute Glossary of Geology Theme_Keyword: Intrusive rocks Theme_Keyword: Igneous intrusions Place: Place_Keyword_Thesaurus: U.S. Board of Geographic Names (BGN) Geographic Names Information System (GNIS) Place_Keyword: Northeast Nevada Place_Keyword: North-central Nevada Temporal: Temporal_Keyword_Thesaurus: American Geological Institute Glossary of Geology Temporal_Keyword: Tertiary Temporal_Keyword: Cretaceous Temporal_Keyword: Jurassic Temporal_Keyword: Triassic Access_Constraints: None Use_Constraints: Request acknowledgement of U.S. Geological Survey in any products derived from these data. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Ed du Bray Contact_Organization: USGS Contact_Address: Address_Type: mailing and physical address Address: Box 25046, MS 973 Address: Denver Federal Center City: Lakewood State_or_Province: CO Postal_Code: 80002-0046 Contact_Voice_Telephone: 303-236-5591 Contact_Electronic_Mail_Address: edubray@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/ds/2007/250/DS250_map.pdf Browse_Graphic_File_Description: graphic representation of map layout Browse_Graphic_File_Type: PDF Data_Set_Credit: A. Elizabeth Jones Crafford, GeoLogic, prepared the GIS database Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.780 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The attributes are believed accurate for this report. The user should refer to DS250_text.pdf for complete details of field accuracy. Logical_Consistency_Report: The Check Geometry tool was run on this file and one self intersection was identified and repaired. No Topological tests have been done. Completeness_Report: All polygons originally appearing as intrusive rocks on the new Digital map (Crafford, 2007) were used as the original study set. Where they no longer met the criteria of intrusive rock after research by du Bray, they were removed from the data set. The data set does not include polygons that may be Intrusive rocks but were mapped as other rock types on either the county geologic maps or the 1978 State geologic map. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: A. Elizabeth Jones Crafford Title: A 1:250,000-scale Nevada State digital geologic map Publication_Date: 2007 Series_Information: Series_Name: Data Series Issue_Identification: 249 Other_Citation_Details: 1 CD-ROM Publication_Information: Publication_Place: Denver, Colorado Publisher: United States Geological Survey Source_Scale_Denominator: 250,000 Type_of_Source_Media: CD-ROM Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2007 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Crafford (2007) Source_Contribution: Intrusion polygons data source Process_Step: Process_Description: The new digital geologic map (Crafford, 2007) was compiled from digital county and State geologic maps. Full process step details are given in that publication for that process. Crafford extracted from the new compilation all of the polygons mapped as intrusive rocks and created a separate shape file showing only intrusive rocks. Process_Date: 2005 Process_Step: Process_Description: Ed du Bray used this shape file of intrusions to locate all reference material on the rocks and compile a spreadsheet of geochronologic and compositional information about the intrusions. Edits were made to both the shape file and to the spreadsheet to reconcile the information to match the correct polygons with the correct information about them--rocks that were not intrusive were changed and removed, other polygons were edited and split into multiple parts where the information warranted. More details of this process are provided in the accompanying text, DS250_text.pdf. Process_Date: 2006 Process_Step: Process_Description: IntrusionsNENV.xls was joined with the master geology geodatabase from the new map (Crafford, 2007) to create a new shape file (Intrusions_polyNENV.shp) that contained the spatial geologic information and the geochronologic and compositional attributes. The geochronologic and compositional information was used to generate updated more detailed geologic coding information to apply to the polygon. Process_Date: 2006 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: G-polygon Point_and_Vector_Object_Count: 882 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 11 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -117.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.001024 Ordinate_Resolution: 0.001024 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: Detailed_Description: Entity_Type: Entity_Type_Label: Intrusions_polyNENV Entity_Type_Definition: Polygons of intrusive rocks of north-central and northeast Nevada with geochronologic and compositional attributes Entity_Type_Definition_Source: Ed du Bray and Elizabeth Crafford Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features Attribute: Attribute_Label: OBJECTID Attribute_Definition: Unique sequential whole numbers, user defined Attribute_Definition_Source: Elizabeth Crafford Attribute_Domain_Values: Unrepresentable_Domain: Unique sequential whole numbers, user defined Attribute: Attribute_Label: GEOLOGICFM Attribute_Definition: Geologic unit codes based on geochronologic and compositional data compiled in this study Attribute_Definition_Source: Crafford and du Bray Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Tri Enumerated_Domain_Value_Definition: Tertiary rhyolite intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Trhdi Enumerated_Domain_Value_Definition: Tertiary rhyolite-dacite intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Tdi Enumerated_Domain_Value_Definition: Tertiary dacite intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Tai Enumerated_Domain_Value_Definition: Tertiary andesite intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Tfi Enumerated_Domain_Value_Definition: Tertiary felsic phaneritic intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Tii Enumerated_Domain_Value_Definition: Tertiary intermediate phaneritic intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Tmi Enumerated_Domain_Value_Definition: Tertiary mafic phaneritic intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ti Enumerated_Domain_Value_Definition: Tertiary phaneritic intrusion, unknown composition Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Kri Enumerated_Domain_Value_Definition: Cretaceous rhyolite intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Kdi Enumerated_Domain_Value_Definition: Cretaceous dacite intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Kfi Enumerated_Domain_Value_Definition: Cretaceous felsic phaneritic intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Kii Enumerated_Domain_Value_Definition: Cretaceous intermediate phaneritic intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Kmi Enumerated_Domain_Value_Definition: Cretaceous phaneritic mafic intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ki Enumerated_Domain_Value_Definition: Cretaceous phaneritic intrusion, unknown composition Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Jri Enumerated_Domain_Value_Definition: Jurassic rhyolite intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Jfi Enumerated_Domain_Value_Definition: Jurassic felsic phaneritic intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Jii Enumerated_Domain_Value_Definition: Jurassic intermediate phaneritic intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Jmi Enumerated_Domain_Value_Definition: Jurassic mafic phaneritic intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Jgb Enumerated_Domain_Value_Definition: Jurassic gabbro, anorthosite, and albitite Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ji Enumerated_Domain_Value_Definition: Jurassic phaneritic intrusion, unknown composition Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: TRri Enumerated_Domain_Value_Definition: Triassic rhyolite intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: TRfi Enumerated_Domain_Value_Definition: Triassic felsic phaneritic intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: TJfi Enumerated_Domain_Value_Definition: Tertiary to Jurassic felsic phaneritic intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: TJii Enumerated_Domain_Value_Definition: Tertiary to Jurassic intermediate phaneritic intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: TJmi Enumerated_Domain_Value_Definition: Tertiary to Jurassic mafic phaneritic intrusion Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: TJi Enumerated_Domain_Value_Definition: Tertiary to Jurassic phaneritic intrusion, unknown composition Enumerated_Domain_Value_Definition_Source: du Bray and Crafford Attribute: Attribute_Label: County Attribute_Definition: Nevada county where polygon occurs. Multiple counties are listed where polygon crosses boundaries Attribute_Definition_Source: State of Nevada Attribute_Domain_Values: Codeset_Domain: Codeset_Name: Counties of Nevada Codeset_Source: State of Nevada Attribute: Attribute_Label: GEOL_REFS Attribute_Definition: References used to modify polygon boundary shape from original county or State boundary Attribute_Definition_Source: Elizabeth Crafford Attribute_Domain_Values: Codeset_Domain: Codeset_Name: Numerical reference list Codeset_Source: DS250_text.pdf, this CD-ROM Attribute: Attribute_Label: Shape_leng Attribute_Definition: Calculated perimeter length of polygon Attribute_Definition_Source: Software calculated Attribute_Domain_Values: Unrepresentable_Domain: Calculated polygon perimeter length Attribute: Attribute_Label: Shape_area Attribute_Definition: Area of feature in internal units squared Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated Attribute: Attribute_Label: INTRUSION_NAME Attribute_Definition: Name of Intrusion Attribute_Definition_Source: References listed in DS250_text.pdf, this CD- ROM Attribute_Domain_Values: Unrepresentable_Domain: Text name assigned to intrusion Attribute: Attribute_Label: IN_NAM_SRC Attribute_Definition: Source of text name for intrusion Attribute_Definition_Source: References listed in DS250_text.pdf, this CD- ROM Attribute_Domain_Values: Codeset_Domain: Codeset_Name: Numerical reference list Codeset_Source: DS250_text.pdf, this CD-ROM Attribute: Attribute_Label: AGE Attribute_Definition: Age range of intrusion given in reference information Attribute_Definition_Source: References listed in DS250_text.pdf, this CD- ROM Attribute_Domain_Values: Codeset_Domain: Codeset_Name: Numerical reference list Codeset_Source: DS250_text.pdf, this CD-ROM Attribute: Attribute_Label: AGE_SRC Attribute_Definition: Source of age range for intrusion Attribute_Definition_Source: DS250_text.pdf, this CD-ROM Attribute_Domain_Values: Codeset_Domain: Codeset_Name: Numerical reference list Codeset_Source: DS250_text.pdf, this CD-ROM Attribute: Attribute_Label: BEST_AGE Attribute_Definition: Interpreted best age of intrusion based on both reference age information and geologic interpretation Attribute_Definition_Source: Ed du Bray Attribute_Domain_Values: Unrepresentable_Domain: Numerical age in millions of years Attribute: Attribute_Label: MODAL_COMPOSITION Attribute_Definition: Composition of Intrusion based on reference information Attribute_Definition_Source: DS250_text.pdf, this CD-ROM Attribute_Domain_Values: Codeset_Domain: Codeset_Name: Streckeisen classification scheme Codeset_Source: Streckeisen (1973). Complete reference given in DS250_text.pdf, this CD-ROM Attribute: Attribute_Label: COMP_SRC Attribute_Definition: Source of information used to compile intrusion composition Attribute_Definition_Source: References listed in DS250_text.pdf, this CD- ROM Attribute_Domain_Values: Codeset_Domain: Codeset_Name: Numerical reference list Codeset_Source: DS250_text.pdf, this CD-ROM Attribute: Attribute_Label: AGE_CODE Attribute_Definition: Text code for Period age of intrusion Attribute_Definition_Source: Derived from values in BEST_AGE Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: T Enumerated_Domain_Value_Definition: Tertiary Enumerated_Domain_Value_Definition_Source: Geologic Period Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: K Enumerated_Domain_Value_Definition: Cretaceous Enumerated_Domain_Value_Definition_Source: Geologic Period Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: J Enumerated_Domain_Value_Definition: Jurassic Enumerated_Domain_Value_Definition_Source: Geologic Period Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: TJ Enumerated_Domain_Value_Definition: Tertiary-Jurassic Enumerated_Domain_Value_Definition_Source: Geologic Periods Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: TR Enumerated_Domain_Value_Definition: Triassic Enumerated_Domain_Value_Definition_Source: Geologic Period Attribute: Attribute_Label: comp_code Attribute_Definition: Summary compositional code for intrusion Attribute_Definition_Source: This report Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: ai Enumerated_Domain_Value_Definition: Andesite intrusion Enumerated_Domain_Value_Definition_Source: This study Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: di Enumerated_Domain_Value_Definition: Dacite intrusion Enumerated_Domain_Value_Definition_Source: This study Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: fi Enumerated_Domain_Value_Definition: Felsic phaneritic intrusion Enumerated_Domain_Value_Definition_Source: This study Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: gb Enumerated_Domain_Value_Definition: Gabbro Enumerated_Domain_Value_Definition_Source: This study Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: i Enumerated_Domain_Value_Definition: Phaneritic intrusion Enumerated_Domain_Value_Definition_Source: This study Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: ii Enumerated_Domain_Value_Definition: Intermediate phaneritic intrusion Enumerated_Domain_Value_Definition_Source: This study Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: mi Enumerated_Domain_Value_Definition: Mafic holocrystaline intrusion Enumerated_Domain_Value_Definition_Source: This study Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: rhdi Enumerated_Domain_Value_Definition: Rhyolite dacite intrusion Enumerated_Domain_Value_Definition_Source: This study Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: ri Enumerated_Domain_Value_Definition: Rhyolite intrusion Enumerated_Domain_Value_Definition_Source: This study Overview_Description: Entity_and_Attribute_Overview: Detailed description of attribute values is provided in the accompanying text, DS250_text.pdf Entity_and_Attribute_Detail_Citation: Detailed description of attribute values is provided in the accompanying text, DS250_text.pdf Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: Publishing Service Center 15 USGS - Denver Federal Center MS 902, Box 25046 City: Denver State_or_Province: CO Postal_Code: 80225-0046 Contact_Voice_Telephone: 303-236-5405 Resource_Description: Data Series 250 Distribution_Liability: Although these digital spatial data have been subjected to rigorous review and are substantially complete, they are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from their authorized or unauthorized use. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Shape file Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/ds/2007/250/ Fees: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: USGS Information Services Box 25286 City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS Resource_Description: Data Deries 250 Distribution_Liability: none Standard_Order_Process: Non-digital_Form: Available as one CD-ROM. Order from USGS at the address listed above or see http://rmmcweb.cr.usgs.gov/public/mod/order.html for more ordering information. Fees: for current charges please see http://rmmcweb.cr.usgs.gov/public/mod/order.html Metadata_Reference_Information: Metadata_Date: 20070306 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Elizabeth Crafford Contact_Organization: GeoLogic Contact_Address: Address_Type: mailing and physical address Address: 9501 Nettleton Drive City: Anchorage State_or_Province: AK Postal_Code: 99507 Contact_Voice_Telephone: 907-272-0171 Contact_Electronic_Mail_Address: ecrafford@alaska.com Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998