Metadata: Identification_Information: Citation: Citation_Information: Originator: William F. Cannon Originator: Thomas H. Kress Originator: David M. Sutphin Originator: G.B. Morey Originator: Joyce Meints Originator: Robert Barber-Delach Publication_Date: 1999 Title: Deposits of the Lake Superior region Edition: Version 3.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 97-0455 Online_Linkage: http://pubs.usgs.gov/of/1997/of97-455/ Keywords: Theme: Theme_Keyword_Thesaurus: National Geologic Map Database Catalog themes, augmented Theme_Keyword: 3100 - Vector Theme_Keyword: 3110 - ESRI Theme_Keyword: 3112 - export Theme_Keyword: 3113 - shape Theme_Keyword: 1100 - Geology Theme_Keyword: 1101 - General Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Categories Theme_Keyword: geoscientificInformation Place: Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4, version 1.0 Place_Keyword: US26 = Michigan Place_Keyword: US27 = Minnesota Place_Keyword: US55 = Wisconsin Description: Abstract: This digital map portrays the bedrock geology of the states of Michigan, Wisconsin, and Minnesota taken from the most recent published regional compilations. Some minor modifications and generalizations have been made from the published maps. Information on mineral deposits of the three states is from the U.S. Geological Survey's Mineral Resource Data System (MRDS). Version 3.0 supercedes the original report released in 1997. It differs from the original map in having expanded attribute information assigned to geologic units and updated shoreline and state boundaries. The new attributes allow expanded capabilities for producing derivative maps for attributes including stratigraphy, lithology, and tectonic settings. The new shoreline and state bounaries offer greater geographic accuracy than the originally published version. Purpose: This product is intended to provide a regional overview of mineral deposits and their relation to regional geology and is not intended for use at scales greater than 1:500,000. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1999 Currentness_Reference: publication date of version 3.0 Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Access_Constraints: none Use_Constraints: none Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Cannon, William F Contact_Organization: USGS-GEO-ERG-MRS Contact_Address: Address_Type: mailing and physical address Address: Mail Stop 954, USGS 12201 Sunrise Valley Drive City: Reston State_or_Province: VA Postal_Code: 20192 Country: US Contact_Voice_Telephone: 703-648-6345 Contact_Electronic_Mail_Address: wcannon@usgs.gov Data_Quality_Information: Logical_Consistency_Report: Data has been entered into MRDS by a variety of users over more than two decades. Completeness_Report: Complete Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Various users have had differing requirements for locational precision of deposit sites. The result is that some original records give only approximate locations. We have reviewed the locations for the deposits contained in the included files with the aim of having all deposit locations correct to within 2 seconds of latitude and longitude. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Milstein, Randall L. (comp.) Publication_Date: 1987 Title: Bedrock geology of southern Michigan: Geological Survey Division, Michigan Dept. of Natural Resources Geospatial_Data_Presentation_Form: map Source_Scale_Denominator: 500000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1987 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Milstein (1987) Source_Contribution: Bedrock geology of southern Michigan Source_Information: Source_Citation: Citation_Information: Originator: Reed, Robert C. Originator: Daniels, Jennifer (comp.) Publication_Date: 1987 Title: Bedrock geology of Northern Michigan: Geological Survey Division, Michigan Department of natural resources Geospatial_Data_Presentation_Form: map Source_Scale_Denominator: 500000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1987 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Reed and Daniels (1987) Source_Contribution: Bedrock geology of Northern Michigan Source_Information: Source_Citation: Citation_Information: Originator: Sims, P.K. Publication_Date: 1992 Title: Geologic map of Precambrian rocks, southern Lake Superior regoin, Wisconsin and northern Michican Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map Issue_Identification: I-2185 Source_Scale_Denominator: 500000 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: Sims (1992) Source_Contribution: Geologic map of the Precambrain rocks in the southern Lake Superior region Source_Information: Source_Citation: Citation_Information: Originator: Mudrey, M.G., Jr. Originator: Brown, B.A. Originator: Greenberg J.K. Publication_Date: 1982 Title: Bedrock geologic map of Wisconsin: Wisconsin Geological and Naturan History Survey Geospatial_Data_Presentation_Form: map Source_Scale_Denominator: 1000000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1982 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Mudrey and others (1982) Source_Contribution: Bedrock geologic map of Wisconsin Source_Information: Source_Citation: Citation_Information: Originator: Morey G.B. (comp.) Publication_Date: 1996 Title: Geologic Map of Minnesota, Bedrock geology: Edition: digital version 2 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Minnesota Geological Survey State Map Series Issue_Identification: S-20 Source_Scale_Denominator: 1000000 Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1996 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Morey (1996) Source_Contribution: Bedrock geologic map of Minnesota Process_Step: Process_Description: This version differs from the original report released in 1997 in having expanded attribute information and updated shoreline and state boundaries. Process_Date: 1997-1999 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: entity point SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: complete chain SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Lambert Conformal Conic Lambert_Conformal_Conic: Standard_Parallel: 33.0 Standard_Parallel: 45.0 Longitude_of_Central_Meridian: -88.50 Latitude_of_Projection_Origin: 0.000 False_Easting: 0.000 False_Northing: 0.000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: unkonwn Ordinate_Resolution: unknown Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: unknown Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206 Denominator_of_Flattening_Ratio: 294.98 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: SUPERIOR_FLT.AAT Entity_Type_Definition: Faults Entity_Type_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: FAULT_TYPE Attribute_Definition: Type of fault or other linear map feature Attribute_Definition_Source: OFR-97-0455 Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: concealed contact Enumerated_Domain_Value_Definition: Concealed contact whose position is inferred Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: concealed fault Enumerated_Domain_Value_Definition: Concealed fault whose position is inferred Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: iron formation Enumerated_Domain_Value_Definition: Iron formation location Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: thrust Enumerated_Domain_Value_Definition: Thrust fault Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: undetermined Enumerated_Domain_Value_Definition: Fault type undetermined Attribute: Attribute_Label: PLOT_CODE Attribute_Definition: Plotting code for fault type Attribute_Definition_Source: OFR-97-0455 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 5 Attribute: Attribute_Label: SOURCE Attribute_Definition: Numerical code for original data source for map feature Attribute_Definition_Source: OFR-97-0455 Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 3 Enumerated_Domain_Value_Definition: Sims (1992) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 5 Enumerated_Domain_Value_Definition: Morey (1996) Detailed_Description: Entity_Type: Entity_Type_Label: SUPERIOR_GLY.PAT Entity_Type_Definition: Geologic map units Entity_Type_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: MGS_CODE Attribute_Definition: Minnesota Geological Survey Code as used in state map series Attribute_Definition_Source: OFR-97-0455 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 442800 Attribute: Attribute_Label: SOURCE Attribute_Definition: Numerical code for original data source for map feature Attribute_Definition_Source: OFR-97-0455 Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1 Enumerated_Domain_Value_Definition: Milstein (1987) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 2 Enumerated_Domain_Value_Definition: Reed and Daniels (1987) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 3 Enumerated_Domain_Value_Definition: Sims (1992) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 4 Enumerated_Domain_Value_Definition: Mudrey and others (1982) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 5 Enumerated_Domain_Value_Definition: Morey (1996) Attribute: Attribute_Label: ERA Attribute_Definition: The geologic era in which the rock unit was formed Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: SYMBOL Attribute_Definition: A unique letter symbol identifying each geologic unit as defined under the attribute "unit name" and the attribute "period" Attribute_Definition_Source: OFR-97-0455 Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Agn Enumerated_Domain_Value_Definition: Gneiss and granite (Late and early Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Cm Enumerated_Domain_Value_Definition: Munising Formation (Cambrian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ct Enumerated_Domain_Value_Definition: Trempeleau Formation (Cambrian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Cu Enumerated_Domain_Value_Definition: Cambrian undivided Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: DMs Enumerated_Domain_Value_Definition: Sunbury shale (Mississippian - Devonian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Da Enumerated_Domain_Value_Definition: Antrim shale (Devonian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Db Enumerated_Domain_Value_Definition: Berea Sandstone (Devonian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Dbb Enumerated_Domain_Value_Definition: Bois Blanc Formation (Devonian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Dbd Enumerated_Domain_Value_Definition: Bedford shale (Devonian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Dbe Enumerated_Domain_Value_Definition: Bell shale (Devonian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Dd Enumerated_Domain_Value_Definition: Dundee Limestone (Devonian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ddr Enumerated_Domain_Value_Definition: Detroit River Group (Devonian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: De Enumerated_Domain_Value_Definition: Ellsworth shale (Devonian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Dg Enumerated_Domain_Value_Definition: Garden Island Formation (Devonian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Dm Enumerated_Domain_Value_Definition: Mackinac Breccia (Devonian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ds Enumerated_Domain_Value_Definition: Sylvania Sandstone (Devonian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Dt Enumerated_Domain_Value_Definition: Traverse Group (Devonian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Du Enumerated_Domain_Value_Definition: Devonian sedimentary rocks Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: J Enumerated_Domain_Value_Definition: Jurassic sedimentary rocks Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Jr Enumerated_Domain_Value_Definition: red beds (Jurassic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: K Enumerated_Domain_Value_Definition: Cretaceous sedimentary rocks Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Mb Enumerated_Domain_Value_Definition: Bayport Limestone (Mississippian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Mc Enumerated_Domain_Value_Definition: Coldwater shale (Mississippian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Mm Enumerated_Domain_Value_Definition: Marshall Sandstone (Mississippian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Mmi Enumerated_Domain_Value_Definition: Michigan Formation (Mississippian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Oa Enumerated_Domain_Value_Definition: Ancell Group (Ordovician) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ob Enumerated_Domain_Value_Definition: Big Hill Dolomite (Ordovician) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Obr Enumerated_Domain_Value_Definition: Black River Limestone (Ordovician) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Oc Enumerated_Domain_Value_Definition: Collingwood formation (Ordovician) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Olu Enumerated_Domain_Value_Definition: Lower Ordovician sedimentary rocks Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Om Enumerated_Domain_Value_Definition: Maquoketa formation (Ordovician) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Omu Enumerated_Domain_Value_Definition: Middle Ordovician sedimentary rocks Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Op Enumerated_Domain_Value_Definition: Prairie du Chien group (Ordovician) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Oq Enumerated_Domain_Value_Definition: Queenston shale (Ordovician) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Os Enumerated_Domain_Value_Definition: Stonington Formation (Ordovician) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Osi Enumerated_Domain_Value_Definition: Sinnippee group (Ordovician) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ot Enumerated_Domain_Value_Definition: Trenton Limestone (Ordovician) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ou Enumerated_Domain_Value_Definition: Utica Shale (Ordovician) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Oum Enumerated_Domain_Value_Definition: Upper & Middle Ordovician sed. rocks Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Owr Enumerated_Domain_Value_Definition: Winnipeg and Red River formations (Ordovician) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Pg Enumerated_Domain_Value_Definition: Grand River formation (Pennsylvanian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ps Enumerated_Domain_Value_Definition: Saginaw formation (Pennsylvanian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Pu Enumerated_Domain_Value_Definition: Paleozoic undivided Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sb Enumerated_Domain_Value_Definition: Bass Island Dolomite (Silurian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sbb Enumerated_Domain_Value_Definition: Burnt Bluff formation (Silurian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sc Enumerated_Domain_Value_Definition: Cataract formation (Silurian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Se Enumerated_Domain_Value_Definition: Engadine Dolomite (Silurian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sm Enumerated_Domain_Value_Definition: Manistique formation (Silurian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sp Enumerated_Domain_Value_Definition: Point Aux Chenes Shale (Silurian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ss Enumerated_Domain_Value_Definition: Salina group (Silurian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sst Enumerated_Domain_Value_Definition: Sainte Ignace Dolomite (Silurian) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Su Enumerated_Domain_Value_Definition: Silurian undivided Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wd Enumerated_Domain_Value_Definition: Dickinson group (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wga Enumerated_Domain_Value_Definition: gniess and amphibolite (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wgd Enumerated_Domain_Value_Definition: post-tectonic granitic rocks (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wgm Enumerated_Domain_Value_Definition: granite-rich migmatite (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wgn Enumerated_Domain_Value_Definition: gneiss (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wgr Enumerated_Domain_Value_Definition: syntectonic granitic rocks (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wgw Enumerated_Domain_Value_Definition: graywacke (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wif Enumerated_Domain_Value_Definition: iron-formation (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wmg Enumerated_Domain_Value_Definition: metagabbro (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wmi Enumerated_Domain_Value_Definition: post-tectonic mafic intrusions (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wmm Enumerated_Domain_Value_Definition: mixed metavolcanic rocks (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wms Enumerated_Domain_Value_Definition: metasedimentary rocks (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wmv Enumerated_Domain_Value_Definition: mafic metavolcanic rocks (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wp Enumerated_Domain_Value_Definition: Puritan Quartz Monzonite (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wps Enumerated_Domain_Value_Definition: paragneiss (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wqz Enumerated_Domain_Value_Definition: rocks of magnetic quiet zone (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ws Enumerated_Domain_Value_Definition: biotite schist (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wsm Enumerated_Domain_Value_Definition: schist-rich migmatite (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wst Enumerated_Domain_Value_Definition: Saganaga Tonalite (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wt Enumerated_Domain_Value_Definition: tuff breccian (Late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wv Enumerated_Domain_Value_Definition: volcanic undivided (late Archean) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: XAf Enumerated_Domain_Value_Definition: mylonite (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xag Enumerated_Domain_Value_Definition: Rove, Virginia, Thomson (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xai Enumerated_Domain_Value_Definition: Biwabik, Gunflint (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xam Enumerated_Domain_Value_Definition: magnetic unit (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xb Enumerated_Domain_Value_Definition: Badwater Greenstone (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xba Enumerated_Domain_Value_Definition: basaltic breccia (Early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xbc Enumerated_Domain_Value_Definition: Blair Creek Formation (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xbq Enumerated_Domain_Value_Definition: Barron or Baraboo Quartzite (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xc Enumerated_Domain_Value_Definition: Copps formation (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xch Enumerated_Domain_Value_Definition: Chocolay group (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xdvg Enumerated_Domain_Value_Definition: dacite and graywacke (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xe Enumerated_Domain_Value_Definition: Emperor Volcanic Complex (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xf Enumerated_Domain_Value_Definition: felsic volcanic (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xft Enumerated_Domain_Value_Definition: foliated tonalite (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xg Enumerated_Domain_Value_Definition: granitic rocks undivided (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xga Enumerated_Domain_Value_Definition: granitic rocks (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xgat Enumerated_Domain_Value_Definition: Athelstane Quartz Monzonite (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xgb Enumerated_Domain_Value_Definition: gabbro (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xgc Enumerated_Domain_Value_Definition: Cherokee Granite (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xgd Enumerated_Domain_Value_Definition: syntectonic intrustions (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xgg Enumerated_Domain_Value_Definition: granite and tonalite (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xggn Enumerated_Domain_Value_Definition: granitic gneiss (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xggr Enumerated_Domain_Value_Definition: gneissic granite (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xgn Enumerated_Domain_Value_Definition: gneiss-amphibolite (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xgp Enumerated_Domain_Value_Definition: Pophryritic granite (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xgr Enumerated_Domain_Value_Definition: alkali-fs granite and late tectonic intrustions (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xgrs Enumerated_Domain_Value_Definition: Spikehorn Creek Granite (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xgt Enumerated_Domain_Value_Definition: granodiorite-tonalite (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xh Enumerated_Domain_Value_Definition: Hemlock formation (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xi Enumerated_Domain_Value_Definition: Ironwood Iron-formation (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xlf Enumerated_Domain_Value_Definition: Little Falls Formation (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xm Enumerated_Domain_Value_Definition: Michigamme formation (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xmb Enumerated_Domain_Value_Definition: metabasalt (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xmc Enumerated_Domain_Value_Definition: Miladore volcanics (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xmd Enumerated_Domain_Value_Definition: metadiabase (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xmg Enumerated_Domain_Value_Definition: Michigamme-graywacke member and metagabbro (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xmi Enumerated_Domain_Value_Definition: Mafic metavolcanic (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xmib Enumerated_Domain_Value_Definition: bimodal volcanics (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xmif Enumerated_Domain_Value_Definition: Michigamme-iron-formation (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xmiv Enumerated_Domain_Value_Definition: iron-formation (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xmmc Enumerated_Domain_Value_Definition: Menominee and Choclay groups (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xmn Enumerated_Domain_Value_Definition: Negaunee Iron-Formation (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xmq Enumerated_Domain_Value_Definition: Trout Lake, Denham (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xms Enumerated_Domain_Value_Definition: Michigamme-slate member (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xmsa Enumerated_Domain_Value_Definition: metasedimentary rocks and Ajibik and Siama formations (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xmu Enumerated_Domain_Value_Definition: Menominee group (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xmv Enumerated_Domain_Value_Definition: bimodal and Michigamme-volcanic member (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xnr Enumerated_Domain_Value_Definition: North Range group (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xop Enumerated_Domain_Value_Definition: post tectonic intrusions (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xpi Enumerated_Domain_Value_Definition: Riverton Iron-Formation (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xpp Enumerated_Domain_Value_Definition: Peavy Pond Complex (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xpu Enumerated_Domain_Value_Definition: Paint River group (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xq Enumerated_Domain_Value_Definition: quartzite (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xqd Enumerated_Domain_Value_Definition: quartz diorite (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xr Enumerated_Domain_Value_Definition: rhyolite (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xrg Enumerated_Domain_Value_Definition: rhyolite (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xrhd Enumerated_Domain_Value_Definition: rhyolite and dacite (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xsq Enumerated_Domain_Value_Definition: Sioux Quartzite (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xsv Enumerated_Domain_Value_Definition: biotite schist (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xt Enumerated_Domain_Value_Definition: Tyler formation (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xtg Enumerated_Domain_Value_Definition: felsic volcanics (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xv Enumerated_Domain_Value_Definition: volcanic rocks undivided (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Xvs Enumerated_Domain_Value_Definition: volcanic-sedimentary unit (early Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ybb Enumerated_Domain_Value_Definition: Beaver Bay complex (Middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yc Enumerated_Domain_Value_Definition: Copper Harbor conglomerate (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ych Enumerated_Domain_Value_Definition: Chequamegon sandstone (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ycv Enumerated_Domain_Value_Definition: Copper Harbor-volcanic member and Chenqwatana volcanics (Middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yda Enumerated_Domain_Value_Definition: Duluth Complex (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ydg Enumerated_Domain_Value_Definition: Duluth Complex (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ydi Enumerated_Domain_Value_Definition: Devils Island sandstone (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ydl Enumerated_Domain_Value_Definition: Duluth complex (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ydt Enumerated_Domain_Value_Definition: Duluth complex (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yf Enumerated_Domain_Value_Definition: Freda Sandstone (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yfl Enumerated_Domain_Value_Definition: Fond do Lac Formation (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ygb Enumerated_Domain_Value_Definition: gabbro (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ygp Enumerated_Domain_Value_Definition: granophyre (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ygr Enumerated_Domain_Value_Definition: granite (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yh Enumerated_Domain_Value_Definition: Hager rhyolite (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yhf Enumerated_Domain_Value_Definition: High Falls granite (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yhi Enumerated_Domain_Value_Definition: Hinkley sandstone (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yhp Enumerated_Domain_Value_Definition: Hager quartz porphyry (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yj Enumerated_Domain_Value_Definition: Jacobsville sandstone (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yk Enumerated_Domain_Value_Definition: Kallander creek volcanics (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ykr Enumerated_Domain_Value_Definition: Kallander creek-ryolite (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yl Enumerated_Domain_Value_Definition: Logan Intrustions (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yn Enumerated_Domain_Value_Definition: Nonesuch formation (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ynv Enumerated_Domain_Value_Definition: North shore volcanic group (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yo Enumerated_Domain_Value_Definition: Orienta sandstone and Olivine gabbro (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yplr Enumerated_Domain_Value_Definition: Portage Lake vol-rhyolite (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yplv Enumerated_Domain_Value_Definition: Portage lake volcanics (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ypr Enumerated_Domain_Value_Definition: Porcupine volcanics-rhyolite (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ypv Enumerated_Domain_Value_Definition: Porcupine volcanics (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ys Enumerated_Domain_Value_Definition: Siemens creek volcanics (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yss Enumerated_Domain_Value_Definition: WP-Stettin pluton (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ywa Enumerated_Domain_Value_Definition: WRB-anorthosite (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Wwap Enumerated_Domain_Value_Definition: WP-aplite (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ywb Enumerated_Domain_Value_Definition: WRB-Belognia granite (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ywe Enumerated_Domain_Value_Definition: WP-Big Eau Pleine granite (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ywg Enumerated_Domain_Value_Definition: WRB-Wolf river granite (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ywm Enumerated_Domain_Value_Definition: WRB-Peshtigo Mangerite (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ywn Enumerated_Domain_Value_Definition: WP-Nine Mile Swamp granite (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ywr Enumerated_Domain_Value_Definition: WRB-Nine Mile swamp granite (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ywr Enumerated_Domain_Value_Definition: WRB-Red river granite (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yws Enumerated_Domain_Value_Definition: WP-quartz syenite (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Ywwg Enumerated_Domain_Value_Definition: WRB-Waupaca granite (middle Proterozoic) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: (blank) Enumerated_Domain_Value_Definition: body of water Attribute: Attribute_Label: PERIOD Attribute_Definition: The geological period in which the rock unit was formed Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: SUBPERIOD Attribute_Definition: The geological subperiod in which the rock unit was formed Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: SUPERGROUP Attribute_Definition: The stratigrpahic supergroup to which a rock unit is assigned Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: GROUP Attribute_Definition: The stratigraphic group to which a rock unit has been assigned Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: UNIT_NAME Attribute_Definition: Stratigraphic name for rock units. For layered rocks, generally corresponds to formation name. Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: AGE Attribute_Definition: Radiometric age or age range. Shown only for well constrained units. Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: RK_TYPE Attribute_Definition: The general lithologic classification for the most abundant rock type in a unit Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: MAJOR_SUBTYPE Attribute_Definition: The lithologic subtype of the most abundant rock in a unit Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: MAJOR_LITHOLOGY Attribute_Definition: A specific lithologic name for the most abundant rock type in a unit Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: MINOR1_RKTYPE Attribute_Definition: The general lithologic classification for a less abundant rock type in a unit Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: MINOR1_SUBTYPE Attribute_Definition: The lithologic subtype for a less abundant rock type in a unit Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: MINOR1_LITHOLOGY Attribute_Definition: A specific lithologic name for a less abundant rock type in a unit Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: MINOR2_RKTYPE Attribute_Definition: The general lithologic classification for a less abundant rock type in a unit Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: MINOR2_SUBTYPE Attribute_Definition: The lithologic subtype for a less abundant rock type in a unit Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: MINOR2_LITHOLOGY Attribute_Definition: A specific lithologic name for a less abundant rock type in a unit Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: PROVINCE_ORIGIN Attribute_Definition: The tectonic province in which rock units were formed Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: SUBPROV_TERRANE Attribute_Definition: The tectonic subprovince or terrane in which rock units were formed Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: PROV_AGE Attribute_Definition: Geologic age of province in which rock unit formed Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: REWORKING_PROV Attribute_Definition: Tectonic province in which older rocks were modified by younger orogenic events Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: REWORKING_SUBPRO Attribute_Definition: Tectonic subprovince in which older rocks were modified by younger orogenic events Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: REWORKING_AGE Attribute_Definition: Age of younger orogeny that modified older rocks Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: ENV_OF_FORMATION Attribute_Definition: The physical environment in which rock units were formed Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: TECTONIC_SETTING Attribute_Definition: The tectonic setting in which rock units were formed Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: LITH_ASSEMBLY Attribute_Definition: An assemblage of rock types characteristic of a unit Attribute_Definition_Source: OFR-97-0455 Detailed_Description: Entity_Type: Entity_Type_Label: SUPERIOR_GLY.PAT Entity_Type_Definition: Geologic map units at specific locations (same attributes as polygon coverage SUPERIOR_GLY.PAT) Entity_Type_Definition_Source: OFR-97-0455 Detailed_Description: Entity_Type: Entity_Type_Label: SUPERIOR_MRDS.PAT Entity_Type_Definition: Mineral resources in mapped area Entity_Type_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: RECNUM Attribute_Definition: The Record Number is a unique seven-character alphanumeric code, such as W062456, for each MRDS record. Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: SITENAME Attribute_Definition: The most recent name given to the ore body, deposit, or property, is entered for a property, mine, prospect, claim, occurrence, group, and so on. If the type is unknown, "occurrence" may be entered after the site name. If the ore body is a subunit of a larger unit, the larger unit name may also be included. Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: DISTRICT Attribute_Definition: The most recent name of the mining district, subdistrict, or area. One of the words "district", "subdistrict" or "area" may be included for clarification purposes. Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: COUNTRY Attribute_Definition: The Country in which the deposit is located. Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: STATE Attribute_Definition: The U.S. State name or foreign country political subdivision in which the deposit is located. Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: COUNTY Attribute_Definition: The name of the county in which the deposit is located. Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: COMMODITY Attribute_Definition: This field provides for the listing of known commodities at a given site. The commodity code(s) may be ordered from most important to least important in the following order: major commodities, minor commodities, and trace commodities. Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: AGE Attribute_Definition: Age of Mineralization The most specific relative geologic age abbreviation for the age of mineralization of the deposit at this site. Early (E) and late (L) are used rather than lower and upper. Multiple entries of absolute ages may be separated with semicolons. Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: ROCKTYPE Attribute_Definition: The main rock type(s) hosting the deposit at this site. Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: ROCKAGE Attribute_Definition: The most specific relative geologic age abbreviation for each of the rock types listed. If age is unknown, it has been left blank. Multiple entries of absolute ages per rock may be separated by semicolons (For example: PROT; U/PB ZIRCON 1760 MA; U/PB ZIRCON 1700 MA). Ranges may be separated by hypens (CRET-TERT). Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: DEPSIZE Attribute_Definition: The general size of the deposit, if known. S (SMALL), M (MEDIUM), L (LARGE) or U(UNKNOWN). The key words represent different value ranges for the different commodities. Deposit size follows the scheme devised for the metallogenic map of North America (Guild, 1968) and refers to the amount of metal or mineral contained in the deposit at this site (that is, total production PLUS any reserves. Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: DEPTYPE Attribute_Definition: n/a - data missing Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: PRODUCTION Attribute_Definition: The entry options for this field are LARGE, MEDIUM, SMALL, YES, NO, and UNDETERMINED. Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: MAJOR Attribute_Definition: The most important commodities that have been or are being produced at this site in decreasing order of significance. Most important can mean the following: coproducts; products of greatest economic significance; products most deliberately produced; the products of primary interest. Attribute_Definition_Source: OFR-97-0455 Attribute: Attribute_Label: MINOR Attribute_Definition: The commodity that are of secondary importance in relation to having been produced at this site. Secondary importance can mean: Byproducts, less abundant product; product of some economic significance; products least deliberately produced and product of least interest. Attribute_Definition_Source: OFR-97-0455 Overview_Description: Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Information Services Contact_Address: Address_Type: mailing Address: Box 25286, Denver Federal Center City: Denver State_or_Province: Colorado Postal_Code: 80255-0046 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS Contact_Facsimile_Telephone: 1-303-202-4695 Contact_Electronic_Mail_Address: infoservices@usgs.gov Resource_Description: US Geological Survey Open-File Report 97-0455 Distribution_Liability: Although this digital product has been subjected to review and is substantially complete, the USGS reserves the right to revise the product pursuant to further analysis and review. Furthermore, it is released on 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: ArcInfo export Format_Version_Number: 7.1.1 Format_Information_Content: Geologic units (superior_gly), faults (superior_flt), and mineral deposits (superior_mrds) Transfer_Size: 12 megabytes total File_Decompression_Technique: uncompressed Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/1997/of97-455/superior_gly.e00 Network_Resource_Name: http://pubs.usgs.gov/of/1997/of97-455/superior_flt.e00 Network_Resource_Name: http://pubs.usgs.gov/of/1997/of97-455/superior_mrds.e00 Digital_Form: Digital_Transfer_Information: Format_Name: shapefile Format_Version_Number: 1.0 Format_Information_Content: Geologic units, faults, and mineral deposit information File_Decompression_Technique: unzip Transfer_Size: 2.8 megabytes Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/1997/of97-455/superior.zip Fees: none Metadata_Reference_Information: Metadata_Date: 20040209 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Peter N Schweitzer Contact_Organization: U.S. Geological Survey, ER Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: Mail Stop 954 12201 Sunrise Valley Drive City: Reston State_or_Province: VA Postal_Code: 20192 Country: USA Contact_Voice_Telephone: 703-648-6533 Contact_Facsimile_Telephone: 703-648-6252 Contact_Electronic_Mail_Address: pschweitzer@usgs.gov Metadata_Standard_Name: Content for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998