Identification_Information: Citation: Citation_Information: Originator: Gerald M. Richmond (ed.) Originator: David S. Fullerton (ed.) Originator: William R. Farrand (comp.) Originator: David M. Mickelson (comp.) Originator: W. Richard Cowan (comp.) Originator: Joseph E. Goebel (comp.) Publication_Date: 2001 Title: Quaternary Geologic Map of the Lake Superior 4° x 6° Quadrangle, United States and Canada Edition: 1.1 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Miscellaneous Investigations Series Issue_Identification: I-1420 (NL-16) Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Online_Linkage: Larger_Work_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 1983- Title: Quaternary geologic atlas of the United States Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Miscellaneous Investigations Series Issue_Identification: I-1420 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Description: Abstract: The Quaternary Geologic Map of the Lake Superior 4° x 6° Quadrangle was mapped as part of the Quaternary Geologic Atlas of the United States. The atlas was begun as an effort to depict the areal distribution of surficial geologic deposits and other materials that accumulated or formed during the past 2+ million years, the period that includes all activities of the human species. These materials are at the surface of the earth. They make up the "ground" on which we walk, the "dirt" in which we dig foundations, and the "soil" in which we grow crops. Most of our human activity is related in one way or another to these surface materials that are referred to collectively by many geologists as regolith, the mantle of fragmental and generally unconsolidated material that overlies the bedrock foundation of the continent. The maps were compiled at 1:1,000,000 scale. Purpose: In recent years, surficial deposits and materials have become the focus of much interest by scientists, environmentalists, governmental agencies, and the general public. They are the foundations of ecosystems, the materials that support plant growth and animal habitat, and the materials through which travels much of the water required for our agriculture, our industry, and our general well being. They also are materials that easily can become contaminated by pesticides, fertilizers, and toxic wastes. In this context, the value of the surficial geologic map is evident The description of map units and sources of information are both included as text files. Supplemental_Information: The digital file was prepared at 1:1,000,000 nominal viewing scale. If the map is enlarged to larger scales (for example, 1:250,000, 1:100,000, or 1:24,000 scale), resolution of the map data is greatly diminished. Enlargement will not restore resolution that was lost by simplification or generalization of data. This database represents an attempt to digitally capture all the geologic information available on the published paper map. Separate coverages are provided for the map unit polygons, linear glacial features, point data for drumlins and type localities, important stratigraphic sections, and line coverages for the hydrology and topography. The published maps of the Quaternary Geologic Atlas of the U.S. used three separate projections. To promote uniformity, the projection of this database was changed from Lambert Conformal Conic to Albers Equal Area and all subsequent digital databases will similarly be changed to Albers Equal Area Projection. Illustrations are provided showing loess distribution and thickness, relationships of the late Wisconsin glacial lobes, sublobes, and advances within lobes and sublobes, and areas of responsibility for the compilation of the map. An illustration is provided showing the correlation of map units. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ARC/INFO format, this metadata file includes some ARC/INFO-specific terminology. >The dataset for the Lake Superior quadrangle consists of 10 coverages. > geo_net > gla_lin > gla_pnt > hydr_lin > topo_lin > bnd_lin > bnd_net > rd_lin > rr_lin > grid_lin > The dataset also includes an ARC/INFO AML, lineset, shadeset, and markerset that will produce the EPS file of the geology and glacial features and the list of map units. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1978 Ending_Date: 1980 Currentness_Reference: Publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None Planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -90.00 East_Bounding_Coordinate: -84.00 North_Bounding_Coordinate: 48.00 South_Bounding_Coordinate: 44.00 Keywords: Theme: Theme_Keyword_Thesaurus: American Geological Institute (AGI) Glossary of Geology Theme_Keyword: Alluvium Theme_Keyword: Beach deposits Theme_Keyword: Coastal deposits Theme_Keyword: Colluvium Theme_Keyword: Decomposition residuum Theme_Keyword: Delta Theme_Keyword: Dune Theme_Keyword: Eolian deposits Theme_Keyword: Genesis Theme_Keyword: Geologic history Theme_Keyword: Geologic map Theme_Keyword: Geology Theme_Keyword: Glacial deposits Theme_Keyword: Glacial limits Theme_Keyword: Glaciofluvial deposits Theme_Keyword: Glaciotectonic deposits Theme_Keyword: Holocene Theme_Keyword: Ice-contact deposits Theme_Keyword: Lacustrine deposits Theme_Keyword: Marine deposits Theme_Keyword: Marsh deposits Theme_Keyword: Moraine Theme_Keyword: Outwash deposits Theme_Keyword: Quaternary Theme_Keyword: Quaternary geology Theme_Keyword: Regional geology Theme_Keyword: Residuum Theme_Keyword: Sand deposits Theme_Keyword: Saprolite Theme_Keyword: Sedimentary rocks Theme_Keyword: Solifluction deposits Theme_Keyword: Surficial deposits Theme_Keyword: Surficial geology Theme_Keyword: Swamp deposits Theme_Keyword: Till Place: Place_Keyword_Thesaurus: U.S. Board on Geographic Names (BGN) Place_Keyword: Canada Place_Keyword: Great Lakes Place_Keyword: Lake Michigan Place_Keyword: Lake Superior Place_Keyword: Michigan Place_Keyword: Minnesota Place_Keyword: Ontario Place_Keyword: United States Place_Keyword: Wisconsin Temporal: Temporal_Keyword_Thesaurus: Richmond, G.M., and Fullerton, D.S., eds., 1986, Introduction, in Quaternary glaciations in the United States of America: Quaternary Science Reviews, v. 5. Temporal_Keyword: Early Wisconsin Temporal_Keyword: Holocene Temporal_Keyword: Late Wisconsin Temporal_Keyword: Pleistocene Temporal_Keyword: Pre-Wisconsin Temporal_Keyword: Quaternary Temporal_Keyword: Tertiary Temporal_Keyword: Wisconsin Access_Constraints: None Use_Constraints: Acknowledgment of the Quaternary Geologic Atlas of the United States of America and (or) the U.S. Geological Survey in products derived from these data will be appreciated. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Charles A. Bush Contact_Organization: U.S. Geological Survey Contact_Position: Emeritus Geophysicist Contact_Address: Address_Type: Mailing and physical address Address: Mail Stop 913, Box 25046, Federal Center City: Lakewood State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: (303) 236-4723 Contact_Facsimile_Telephone: (303) 236-0214 Contact_Electronic_Mail_Address: cbush@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: Browse_Graphic_File_Description: Scan of the original published paper map optimized for screen viewing. Browse_Graphic_File_Type: PDF Browse_Graphic: Browse_Graphic_File_Name: Browse_Graphic_File_Description: Scan of the original published paper map optimized for printing. Browse_Graphic_File_Type: PDF Browse_Graphic: Browse_Graphic_File_Name: Browse_Graphic_File_Description: Chart showing correlation of map units. Browse_Graphic_File_Type: PDF Browse_Graphic: Browse_Graphic_File_Name: Browse_Graphic_File_Description: Index map showing location of quadrangles in the Quaternary Geologic Atlas of the United States. Browse_Graphic_File_Type: PDF Browse_Graphic: Browse_Graphic_File_Name: Browse_Graphic_File_Description: Illustration of relationships of late Wisconsin glacial lobes, sublobes, and advances within lobes and sublobes, as shown on the original published map. Browse_Graphic_File_Type: PDF Browse_Graphic: Browse_Graphic_File_Name: Browse_Graphic_File_Description: Illustration of loess distribution and thickness, as shown on the original published map. Browse_Graphic_File_Type: PDF Browse_Graphic: Browse_Graphic_File_Name: Browse_Graphic_File_Description: Illustration of responsibilities for state and province compilations, as shown on the original published map. Browse_Graphic_File_Type: PDF Data_Set_Credit: Quaternary Geologic Map of the Lake Superior 4° x 6° Quadrangle, United States and Canada, I-1420 (NL-16) was compiled by William R. Farrand, Department of Geological Sciences, University of Michigan; David M. Mickelson, Department of Geology and Geophysics, University of Wisconsin; W. Richard Cowan, Ontario Department of Natural Resources; and Joseph E. Goebel, Minnesota Geological Survey; the state and province compilations were edited and integrated by Gerald M. Richmond, and David S. Fullerton, U.S. Geological Survey. The compilations of geology and glacial features were converted to digital form by Techni Graphic Systems, Inc., of Fort Collins, CO, under contract with the U.S. Geological Survey and modified by Charles A. Bush. Illustrations, word processor files and DLG coverages were prepared by Charles A. Bush and Christy E. Briles, U.S. Geological Survey. Hydrography and topography coverages were scanned and vectorized by C.A. Bush and C.E. Briles. Native_Data_Set_Environment: Windows_NT, 4.0, Intel ARC/INFO version 7.2.1 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Compilation of geologic data: The accuracy of the map data is dependent on (1) the accuracy of the original source data, (2) the accuracy of transfer of that data to larger scale bases by the compilers, (3) the procedures by which the compilers and the editor/integrator simplified or generalized the data, and (4) the procedures used by, and the objectivity exercised by, the editor/integrator in integration of adjacent parts of the map that were prepared by different compilers. Consequently, aspects of accuracy for the data set cannot be quantified. Digitization and attributing of compilation: Digitizing contractor scanned source stable-base material, vectorized scan, attributed files, and produced check plots and coverages. C.A. Bush proofread check plots and reviewed digital files; made final corrections as needed; produced graphical files and imported them into graphics program to prepare plot file. C.A. Bush proofread cartographic product. C.A. Bush and C.E. Briles prepared illustrations and word processing files of descriptions of map units and sources of information. The original paper map was scanned and recreated as PDF files. (The original map was thoroughly reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature.) Logical_Consistency_Report: Polygon and chain-node topology are present. The ARC/INFO commands BUILD and CLEAN were run to ensure the topolgical consistency of data set. All polygons are labeled and were tested by using the ARC/INFO command LABELERRORS. All polygons were checked for closure and intersections. Completeness_Report: These coverages contain polygons for all the map units, lines for all the contacts and glacial features, and points for all the locations of localities and drumlins. All geologic data from the original map is expressed on this map. Minor errors on the original map were corrected by D.S. Fullerton. The symbol for line type "limit of glacial advance--interlobate" was inadvertently omitted from the published map and was added here. Any other differences between elements on the original map and attributed polygons, arcs, and points in the digital database are inadvertent and should not be construed as deliberate alterations of the data. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The accuracy of location of polygons, lines, and points is consistent with the map scale of 1:1,000,000. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Gerald M. Richmond (ed.) Originator: David S. Fullerton (ed.) Originator: William R. Farrand (comp.) Originator: David M. Mickelson (comp.) Originator: W. Richard Cowan (comp.) Originator: Joseph E. Goebel (comp.) Publication_Date: 1984 Title: Quaternary Geologic Map of the Lake Superior 4° x 6° Quadrangle, United States and Canada Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Miscellaneous Investigations Series Issue_Identification: I-1420 (NL-16) Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Source_Scale_Denominator: 1000000 Type_of_Source_Media: mylar separates from printer's negatives for printed map Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1978 Ending_Date: 1980 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Richmond and Fullerton, 1984 Source_Contribution: Linework and point data for the data sets Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 1995 Title: 1:2,000,000-scale Digital Line Graphs -Railroad, Roads, and Boundaries features Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Source_Scale_Denominator: 2000000 Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1972 Ending_Date: 1994 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: 2MILDLG Source_Contribution: spatial and attribute information Process_Step: Process_Description: Digitizing contractor scanned source stable-base material for geology and glacial layers, vectorized scan, attributed files from published paper map, and produced check plots and coverages. Process_Date: 1999 Process_Step: Process_Description: C.A. Bush and C.E. Briles scanned source stable-base material for hydrology and topography layers, vectorized scan, and converted into ARC/INFO coverages. Process_Date: 1999 Process_Step: Process_Description: C.A. Bush acquired U.S. Geological Survey DLG 1:2,000,000 digital data for roads, railroads, and county boundaries. Data were obtained for individual states, combined, and clipped to cover only the area of the map. Since the files are intended only for the users reference, and to reduce file size, all attributes were removed from the railroad coverage. All attributes were removed from the roads coverage except U.S. and State highway designations. All attributes were removed from the boundaries coverage except those containing state or county names. A coverage was created containing map boundaries and state and international boundaries. These coverages do not exactly match the base used in preparation of the original Quaternary Atlas map, but are included for the user's convenience. Process_Date: 1999 Process_Step: Process_Description: C.A. Bush created illustration of the index map on the paper map in a drawing program and changed it to reflect the status of conversion of Quaternary Geologic Atlas quadrangles to digital databases. C.A. Bush scanned loess distribution, glacial lobe chronology, state and province compilation responsibility and map unit correlation diagrams as given on the printed map and converted them to PDF format. Process_Date: 2001 Process_Step: Process_Description: Map unit descriptions and sources of information as given on the printed map were scanned and converted by an Optical Character Recognition computer program into text files and to PDF format(Briles). Process_Date: 1999 Process_Step: Process_Description: Coverages of geology and glacial features were checked and corrected or changed. Additional items were included in the attributes. AMLs were created to plot the data. Plots were imported into graphics program to create a plot of the map (Bush). Process_Date: 2001 Process_Step: Process_Description: Original map was scanned and recreated as PDF file. Process_Date: 2000 Process_Step: Process_Description: Illustrations and text files were checked and edited by C.A. Bush. Process_Date: 2001 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 3363 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 6554 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 3364 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Albers Conical Equal Area Albers_Conical_Equal_Area: Standard_Parallel: 29.5 Standard_Parallel: 45.5 Longitude_of_Central_Meridian: -96 Latitude_of_Projection_Origin: 23 False_Easting: 0.00000 False_Northing: 0.00000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 50 Ordinate_Resolution: 50 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: GRS1980 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.98 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: The geo_net coverage includes polygons that are map units and open water, and arcs that are contacts, color boundaries, and shoreline. The geo_net.pat INFO file consists of the following items: GEOCODE--Refers to the type of polygon and is one of the following: the map unit abbreviation, "lake", "island", or "river". AGE--Refers to the age of the map unit and is one of the following: "Holocene", "Holocene and Late Wisconsin", "Late Wisconsin", "Early Wisconsin", or "Pre Wisconsin". MORAINES--A modifier to the map unit indicating if the unit is a moraine and is one of the following: "Ground moraine", "Ground moraine under Lake Michigan", "Ground moraine under Lakes Michigan and Huron", "Ground moraine under Lake Superior", "End moraine", or "Attenuated drift". MAP_UNITS--A description of the soils within the map units (see below). MODIFIER--Indicates the names of rivers, lakes, or islands or indicates if a map unit is submerged. COLOR--indicates the number of the shade unit in shadeset color524.shd used to fill the map units when plotted using the AML script superior.aml. Items in geo_net.pat are defined as follows: >GEOCODE MAP_UNITS, (AGE) >lm LAKE CLAY AND SILT UNDER LAKES MICHIGAN, HURON, AND > SUPERIOR (HOLOCENE) >lc LAKE SILT AND CLAY UNDER LAKES MICHIGAN, HURON, AND > SUPERIOR (HOLOCENE) >ls LAKE SAND AND GRAVEL UNDER LAKE SUPERIOR (HOLOCENE) >al ALLUVIUM (HOLOCENE AND LATE WISCONSIN) >hp PEAT AND MUCK (HOLOCENE AND LATE WISCONSIN) >ed DUNE SAND (HOLOCENE AND LATE WISCONSIN) >lds DELTA SAND (HOLOCENE AND LATE WISCONSIN) >lga LAKE GRAVEL (HOLOCENE AND LATE WISCONSIN) >lca LAKE SILT AND CLAY (LATE WISCONSIN) >lsa LAKE SAND (LATE WISCONSIN) >gg OUTWASH SAND AND GRAVEL (LATE WISCONSIN) >kg ICE-CONTACT SAND AND GRAVEL (LATE WISCONSIN) >tc CLAYEY TILL, Ground moraine (LATE WISCONSIN) >tc CLAYEY TILL, Ground moraine under Lake Michigan > (LATE WISCONSIN) >tc CLAYEY TILL, End moraine (LATE WISCONSIN) >tcr CLAYEY TILL, Attenuated drift (LATE WISCONSIN) >tl LOAMY TILL, Ground moraine (LATE WISCONSIN) >tl LOAMY TILL, Ground moraine under Lake Michigan > (LATE WISCONSIN) >tl LOAMY TILL, End moraine (LATE WISCONSIN) >tlr LOAMY TILL, Attenuated drift (LATE WISCONSIN) >td CALCAREOUS SANDY LOAMY TILL, Ground moraine > (LATE WISCONSIN) >td CALCAREOUS SANDY LOAMY TILL, Ground moraine under > Lakes Michigan and Huron (LATE WISCONSIN) >td CALCAREOUS SANDY LOAMY TILL, End moraine (LATE WISCONSIN) >tdr CALCAREOUS SANDY LOAMY TILL, Attenuated drift > (LATE WISCONSIN) >tdb NONCALCAREOUS SANDY LOAMY TILL, Ground moraine (LATE > WISCONSIN) >tdb NONCALCAREOUS SANDY LOAMY TILL, Ground moraine under Lake > Superior (LATE WISCONSIN) >tdb NONCALCAREOUS SANDY LOAMY TILL, End moraine (LATE WISCONSIN) >tdr NONCALCAREOUS SANDY LOAMY TILL, Attenuated drift (LATE > WISCONSIN) >ts SANDY TILL, Ground moraine (LATE WISCONSIN) >tsr SANDY TILL, Attenuated drift (LATE WISCONSIN) >tde SANDY LOAMY TILL (EARLY WISCONSIN) >tlp LOAMY TILL (PRE WISCONSIN) >tlq LOAMY TILL (PRE WISCONSIN) The geo_net.aat INFO file consists of the following items: LTYPE--Refers to the type of arc and is one of the following: "contact", "shoreline", "map boundary", or "null". Null is the imaginary line separating streams from lakes. ACCURACY--Refers to accuracy of location of arcs in the geo_net coverage and is either "certain" or "inferred". The gla_lin coverage contains lines that represent linear glacial features. The gla_lin.aat INFO file consists of the following items: TYPE--Refers to the type of glacial feature described by the arc and is one of the following: "esker", "map boundary", or "limit of glacial advance". MODIFIER--Refers only to limits of glacial advance that are "interlobate". ACCURACY--Refers to accuracy of location of arcs in the gla_lin coverage and is either "certain" or "inferred". The gla_pnt coverage contains points that represent drumlins, places where the direction of ice movement is indicated by striations, or the location of important stratigraphic sections. The gla_pnt.pat INFO file consists of the following items: TYPE--Refers to the type of feature shown at the point and is one of the following: "drumlin", "direction of ice movement", or the name of important stratigraphic sections. ANGLE--Refers to the direction of drumlin or ice movement; in degrees measured clockwise from north. MRKANGLE--Negative of ANGLE; useful for plotting symbols in ARCPLOT. Hydr_lin is a line coverage created after scanning the hydrographic layer that was used in the original paper map. It has no user-defined attributes. Topo_lin is a line coverage created after scanning the topographic layer that was used in the original paper map. It has no user-defined attributes. Bnd_lin is a line coverage created from 1:2,000,000-scale U.S. Geological Survey Digital Line Graph coverages (DLG). It contains lines representing the U.S./Canada international boundary and state boundaries. The bnd_lin.aat INFO file contains the following item: TYPE--Refers to the type of line and contains the values: "state boundary", "international boundary", or "map boundary". Bnd_net is a polygon coverage created from 1:2,000,000-scale DLG coverages and contains political and administrative boundaries. To decrease the size of the coverage, all user-defined attributes have been removed except "STATE_NAME" and "AREA_NAME". Rd_lin is a line coverage created from 1:2,000,000-scale DLG coverages. The coverage contains lines representing roads in the map area. All DLG attributes have been stripped from the lines except ENTITY_LABEL, ROUTE_NUMBER1, ROUTE_NUMBER2, and ROUTE_NUMBER3 which contain the federal and state highway number designations. Rr_lin is a line coverage created from 1:2,000,000-scale DLG coverages. The coverage contains lines representing railroads in the map area. It has no DLG attributes. Grid_lin is a line coverage created to display projection lines in one degree increments. It has no attributes. Entity_and_Attribute_Detail_Citation: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Geologic Division, Central Publications Group Contact_Address: Address_Type: Mailing address Address: U.S. Geological Survey, MS902, Box 25046, Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: (303) 236-7684 Contact_Facsimile_Telephone: (303) 236-6287 Contact_Electronic_Mail_Address: gellis@usgs.gov Resource_Description: Miscellaneous Investigations Series Map I-1420 (NL-16), "Quaternary Geologic Map of the Lake Superior 4° × 6° Quadrangle, United States and Canada" Distribution_Liability: Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this data set has been used by the U.S. Geological Survey, no warranty, expressed or implied, is made by the USGS as to the accuracy and functioning of the data set and related material nor shall the fact of distribution constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE, SHP Format_Version_Number: 7.2.1 File_Decompression_Technique: DOS/Windows Zip Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Fees: No cost for the digital files. Technical_Prerequisites: ARC/INFO 7.2.1 or later Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: Mailing Address: U.S. Geological Survey Information Services, Box 25286, Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS Resource_Description: Miscellaneous Investigations Series Map I-1420 (NL-16), "Quaternary Geologic Map of the Lake Superior 4° × 6° Quadrangle, United States and Canada" (printed edition) Distribution_Liability: None Standard_Order_Process: Non-digital_Form: Available as one folded sheet, printed on a four-color press; order from USGS at address listed above. Fees: Call 1-888-ASK-USGS or visit http://mapping.usgs.gov/esic/prices/ for current price of printed edition. Metadata_Reference_Information: Metadata_Date: 20001201 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Charles A. Bush Contact_Organization: U.S. Geological Survey Contact_Position: Emeritus Geophysicist Contact_Address: Address_Type: Mailing Address: U.S. Geological Survey, MS913, Box 25046, Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: (303) 236-4723 Contact_Facsimile_Telephone: (303) 236-0214 Contact_Electronic_Mail_Address: cbush@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998