Identification_Information: Citation: Citation_Information: Originator: Gerald M. Richmond (ed.) Originator: David S. Fullerton (ed.) Originator: Ann Coe Christiansen (ed.) Originator: George R. Hallberg (comp.) Originator: Jerry A. Lineback (comp.) Originator: David M. Mickelson (comp.) Originator: James C. Knox (comp.) Originator: Joseph E. Goebel (comp.) Originator: Howard C. Hobbs (comp.) Originator: John W. Whitfield (comp.) Originator: Ronald A. Ward (comp.) Originator: John D. Boellstorff (comp.) Originator: James B. Swinehart (comp.) Originator: Vincent H. Dreeszen (comp.) Publication_Date: 2008 Title: Quaternary Geologic Map of the Des Moines 4° x 6° Quadrangle, United States Edition: 1.1 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Miscellaneous Investigations series Issue_Identification: I-1420 (NK-15) 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: 1991 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 Des Moines 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. This map is the product of collaboration between State geological surveys, universities, and the U.S. Geological Survey, and is designed for both scientific and practical purposes. It was prepared in two stages. First, a separate map and map explanation of that part of each State included in the quadrangle was prepared by the State compiler. Second, these maps were integrated and locally supplemented by the editors; map unit symbols were revised to a uniform system of classification; and map unit descriptions were edited, supplemented, and coordinated with those of other maps of this series. Diagrams accompanying the map were prepared by the editors. Differences in mapping or interpretation in different areas were resolved by correspondence to the extent possible. Most simply reflect differences in available information or in philosophies of mapping, and should encourage further investigation. Less than forty percent of the surficial deposits of the United States have been mapped and described. Traditionally, mapping of surficial deposits has focused on glacial, alluvial, eolian, lacustrine, marine, and landslide deposits. Slope and upland deposits have been mapped in detail only in restricted areas. However, an enormous amount of engineering construction and many important problems of land use and land management are associated with regions that have extensive slope and upland deposits (colluvium and residuum, for example). These materials commonly have different physical characteristics. Therefore, an effort has been made to classify, map, and describe them on the basis of published and unpublished subsoil data and interpretations, distribution and structure of bedrock parent materials, and slope. The classification is crude, but represents a first step toward a more refined and useful product. For scientific purposes, the map differentiates Quaternary surficial deposits on the basis of a combination of criteria, such as lithology, texture, genesis, stratigraphic relationships, and age, as shown on the correlation diagram and indicated in the map unit descriptions. Some geomorphic features, such as end moraines, are distinguished as map units. Others, such as stream terraces, are not distinguished. Sequences of adjacent alluvial deposits of different ages commonly are too narrow to distinguish at a scale of 1:1,000,000, and most landslide deposits are too small to be shown at that scale. For practical purposes, the map is a surficial materials map. Materials are distinguished on the basis of texture, composition, and local specific characteristics such as swelling clay. It is not a map of pedologic or agronomic soils. Rather it is a generalized map of soils as recognized in engineering geology, or of subsoils or parent materials from which pedologic and agronomic soils are formed. As a materials map it serves as a base from which engineering, land?use planning, or land-management maps can be derived. 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. Supplemental_Information: 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 and point features, loess thickness and relative age, and line coverages for the hydrology and topography. The description of map units and sources of information are both included as PDF files. The published maps of the Quaternary Geologic Atlas of the United States used three separate projections. To promote uniformity, the projection of this database was changed from Modified Polyconic to Albers Equal Area and all subsequent digital databases will similarly be changed to Albers Equal Area Projection. Illustrations are provided showing an index to International Map of the World 1:1,000,000 topographic series; loess distribution and thickness; relationships of Wisconsin advances and stillstands of the Des Moines lobe, and of Illinoian sublobes of the Lake Michigan lobe; areas of responsibility for the compilation of the map; and 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 ArcInfo format, this metadata file includes some ArcInfo-specific terminology. >The dataset for the Des Moines quadrangle consists of 11 coverages. > geo_net > desm_lin > desm_pnt > lss_poly > hydr_lin > topo_lin > bnd_lin > bnd_poly > rd_lin > rr_lin > grid_lin > The dataset also includes an ArcInfo AML, lineset, shadeset, and markerset that will produce the Illustrator or ArcInfo meta 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: 1982 Ending_Date: 1988 Currentness_Reference: Publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None Planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -96.00 East_Bounding_Coordinate: -90.00 North_Bounding_Coordinate: 44.00 South_Bounding_Coordinate: 40.00 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: Delta Theme_Keyword: Drumlin Theme_Keyword: Dune Theme_Keyword: Eolian deposits Theme_Keyword: Esker Theme_Keyword: Genesis Theme_Keyword: Geologic history Theme_Keyword: Geologic map Theme_Keyword: Geology Theme_Keyword: Glacial deposits Theme_Keyword: Glacial limits Theme_Keyword: Holocene Theme_Keyword: Ice-contact deposits Theme_Keyword: Ice-molded landforms Theme_Keyword: Lacustrine deposits Theme_Keyword: Moraine Theme_Keyword: Outwash deposits Theme_Keyword: Quaternary Theme_Keyword: Quaternary geology Theme_Keyword: Regional geology Theme_Keyword: Sand deposits Theme_Keyword: Sedimentary Rocks 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: Illinois Place_Keyword: Iowa Place_Keyword: Minnesota Place_Keyword: Missouri Place_Keyword: Nebraska Place_Keyword: South Dakota 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: Cenozoic Temporal_Keyword: Early Wisconsin Temporal_Keyword: Holocene Temporal_Keyword: Illinoian Temporal_Keyword: Late Wisconsin Temporal_Keyword: pre-Illinoian Temporal_Keyword: Pleistocene Temporal_Keyword: Pliocene Temporal_Keyword: Quaternary Temporal_Keyword: Sangamon 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 980, 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: I-1420_nk-15_map.pdf> Browse_Graphic_File_Description: A scan of the original published paper map. Browse_Graphic_File_Type: PDF Browse_Graphic: Browse_Graphic_File_Name: I-1420_nk-15_plotfile.pdf> Browse_Graphic_File_Description: Plot of the digital files containing map units, linear and point features, hydrology, topography and list of map symbols. Browse_Graphic_File_Type: PDF Browse_Graphic: Browse_Graphic_File_Name: I-1420_nk-15_correlation.pdf> Browse_Graphic_File_Description: A scan of correlation chart on published paper map. Browse_Graphic_File_Type: PDF Browse_Graphic: Browse_Graphic_File_Name: I-1420_nk-15_index.pdf> Browse_Graphic_File_Description: Index map showing location of Quaternary Geologic Atlas of the U.S. quadrangles and quadrangles published digitally and as paper maps. Browse_Graphic_File_Type: PDF Browse_Graphic: Browse_Graphic_File_Name: I-1420_nk-15_responsibility.pdf> Browse_Graphic_File_Description: A scan of illustration of state compilation responsibilities shown on the paper map. Browse_Graphic_File_Type: PDF Browse_Graphic: Browse_Graphic_File_Name: I-1420_nk-15_lobes.pdf> Browse_Graphic_File_Description: A scan of illustration on the paper map showing the relationship of late Wisconsin advances and stillstands of the Des Moines lobe, and of Illinoian sublobes of Lake Michigan lobe. Browse_Graphic_File_Type: PDF Browse_Graphic: Browse_Graphic_File_Name: I-1420_nk-15_loess.pdf> Browse_Graphic_File_Description: A scan of illustration on the paper map showing loess distribution and thickness. Browse_Graphic_File_Type: PDF Browse_Graphic: Browse_Graphic_File_Name: I-1420_nk-15_loessstrat.pdf> Browse_Graphic_File_Description: A scan of illustration on the paper map showing loess stratigraphy and thickness on Wisconsin, Illinoian, and pre-Illinoian tills. Browse_Graphic_File_Type: PDF Browse_Graphic: Browse_Graphic_File_Name: I-1420_nk-15_tillcor.pdf> Browse_Graphic_File_Description: A scan of illustration on the paper map showing correlation of surface and subsurface pre-Illinoian tills in eastern Nebraska and Iowa. Browse_Graphic_File_Type: PDF Browse_Graphic: Browse_Graphic_File_Name: I-1420_nk-15_textonly.pdf> Browse_Graphic_File_Description: Text description of map units, figure captions, notes on the original map, and sources of information used in preparing the original map. Browse_Graphic_File_Type: PDF Data_Set_Credit: The Quaternary Geologic Map of the Des Moines 4° x 6° Quadrangle, United States and Canada, I-1420 (NK-15) was compiled by George R. Hallberg, Iowa Geological Survey; Jerry A. Lineback, Illinois State Geological Survey; David M. Mickelson, University of Wisconsin Department of Geology and Geophysics; James C. Knox, University of Wisconsin Department of Geography; Joseph E. Goebel and Howard C. Hobbs, Minnesota Geological Survey; John W. Whitfield and Ronald A. Ward, Missouri Division of Geology and Land Survey; John D. Boellstorff, James B. Swinehart, and Vincent H. Dreeszen, Nebraska Conservation and Survey Division. The state compilations were edited and integrated by Gerald M. Richmond, David S. Fullerton, and Ann Coe Christiansen, U.S. Geological Survey. The compilations of geology, linear, and point features were converted to digital form by TechniGraphic Systems, Inc., of Fort Collins, CO, under contract with the U.S. Geological Survey and modified by Charles A. Bush. The hydrography layer, topographic layer, illustrations, word processor files, and DLG coverages were prepared by Bush. Native_Data_Set_Environment: Windows XP 5.1, Intel ArcInfo version 9.1 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. In addition, conflicts pertaining to the placement of features existed between the geology and hydrography hard copy source data, making it necessary to conflate the data sources into a single workable coverage. Cartographic and geologic experience and knowledge were used to provide a best fit solution for this problem. 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, added additional attribution, and reviewed digital files; made final corrections as needed; produced graphical files and imported them into graphics program to prepare plot file; proofread cartographic product; 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 ArcInfo commands BUILD and CLEAN were run to ensure the topological consistency of the data set. All polygons are labeled and were tested by using the ArcInfo 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, linear features, loess isopachs, and points for all the locations of direction of glacier movement, volcanic ash bed localities, and location of significant stratigraphic sections. All geologic data from the original map are expressed on this map. Any differences between elements on the original map and attributed polygons, arcs, and points in this 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. 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. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Gerald M. Richmond (ed.) Originator: David S. Fullerton (ed.) Originator: Ann Coe Christiansen (ed.) Originator: George R. Hallberg (comp.) Originator: Jerry A. Lineback (comp.) Originator: David M. Mickelson (comp.) Originator: James C. Knox (comp.) Originator: Joseph E. Goebel (comp.) Originator: Howard C. Hobbs (comp.) Originator: John W. Whitfield (comp.) Originator: Ronald A. Ward (comp.) Originator: John D. Boellstorff (comp.) Originator: James B. Swinehart (comp.) Originator: Vincent H. Dreeszen (comp.) Publication_Date: 1991 Title: Quaternary Geologic Map of the Des Moines 4° x 6° Quadrangle, United States Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Miscellaneous Investigations Series Issue_Identification: I-1420 (NK-15) 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: 1982 Ending_Date: 1988 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Richmond, 1991 Source_Contribution: Linework and point data for the data sets Source_Information: Source_Citation: Citation_Information: Originator: National Atlas of the United States, 2001 Publication_Date: 2004 Title: County Boundaries of the United States, 2001 Geospatial_Data_Presentation_Form: Map Publication_Information: Publication_Place: Reston, Virginia Publisher: National Atlas of the United States 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: 2001 Source_Currentness_Reference: Ground condition Source_Citation_Abbreviation: usctdd Source_Contribution: spatial and attribute information Source_Information: Source_Citation: Citation_Information: Originator: National Atlas of the United States Publication_Date: 2006 Title: State Boundaries of the United States Geospatial_Data_Presentation_Form: Map Publication_Information: Publication_Place: Reston, Virginia Publisher: National Atlas of the United States 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: 2002 Source_Currentness_Reference: Ground condition Source_Citation_Abbreviation: statesp020 Source_Contribution: spatial and attribute information Source_Information: Source_Citation: Citation_Information: Originator: National Atlas of the United States Publication_Date: 1998 Title: Railroads of the United States Geospatial_Data_Presentation_Form: Map Publication_Information: Publication_Place: Reston, Virginia Publisher: National Atlas of the United States Source_Scale_Denominator: 2000000 Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 199812 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: railrdl020 Source_Contribution: spatial and attribute information Source_Information: Source_Citation: Citation_Information: Originator: National Atlas of the United States Publication_Date: 1999 Title: Major Roads of the United States Geospatial_Data_Presentation_Form: Map Publication_Information: Publication_Place: Reston, Virginia Publisher: National Atlas of the United States 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: 1999 Source_Currentness_Reference: Ground condition Source_Citation_Abbreviation: roadtrl020 Source_Contribution: spatial and attribute information Process_Step: Process_Description: Digitizing contractor scanned source stable-base material for geology, line features, and point features, vectorized scan, converted into ArcInfo coverages and attributed files from published paper map, and produced check plots and coverages. Process_Date: 1999 Process_Step: Process_Description: C.A. Bush scanned stable base material for topography and hydrography layers, vectorized scan, and converted into ArcInfo coverage. Process_Date: 2006 Process_Step: Process_Description: C.A. Bush acquired National Atlas of the United States 1:2,000,000 digital data for roads, railroads, state boundaries, and county boundaries in the United States. Data were clipped to cover only the area of the map. Since the files are intended only for the user's 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 county boundaries except the county name and the state name. 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: 2006 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. Bush scanned original printed map and also separated state compilation responsibility and map unit correlation diagrams, other illustrations, cleaned the scans, and converted them to PDF format. Process_Date: 2006 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(Bush). Process_Date: 2006 Process_Step: Process_Description: Coverages of geology and glacial features were checked and corrected or changed. Additional items were included in the attributes. AML's were created to plot the data. Plots were imported into graphics program to create a plotfile of the digital map (Bush). Process_Date: 2006 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector 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: 500 Ordinate_Resolution: 500 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: GRS1980 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257 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, shorelines, or map boundaries. The geo_net.pat INFO file consists of the following items: GEOCODE--Refers to the type of polygon and is one of the following: map unit symbol, "lake," or "river." Since unit "tlg" was shown on the paper map in three different patterns to represent ground, end, and stagnation moraines, the unit was changed to "tlg(g)," "tlg(e)," and "tlg(s)" in the database. Units "tkm" and "tkp" were shown with ground and end moraines, and were changed similarily. (See table below.) MAPUNITS--A description of the deposits and materials that make up the map units; blank where not applicable (see below). See pamphlet or text-only file for full unit descriptions. AGE--Refers to the age of the map unit and is one of the following: "HOLOCENE AND LATE WISCONSIN," "HOLOCENE TO MIDDLE PLEISTOCENE," "WISCONSIN," "EARLY WISCONSIN," "EARLY WISCONSIN OR ILLINOIAN," "WISCONSIN AND ILLINOIAN," "PRE-ILLINOIAN AND LATE PLIOCENE," "ILLINOIAN," "PRE-ILLINOIAN," "QUATERNARY AND TERTIARY," "PRE-TERTIARY," or blank where not applicable. (See table below.) MODIFIER--Refers to the names of lakes or rivers. COLOR--An integer value representing a shade pattern in the shadeset color524.shd used in preparing the plotfile of the map. Items in geo_net.pat are defined as follows: >GEOCODE; MAPUNITS; AGE > >al; ALLUVIUM; HOLOCENE AND LATE WISCONSIN >asc; ALLUVIAL SILT AND SAND; HOLOCENE AND LATE WISCONSIN >es; EOLIAN SHEET SAND; HOLOCENE AND LATE WISCONSIN >el; LOESS; HOLOCENE AND LATE WISCONSIN >ca; COLLUVIUM AND SHEETWASH ALLUVIUM; HOLOCENE AND LATE WISCONSIN >cls; CHERT-CLAST CLAYEY SILT TO SILTY CLAY LOAM COLLUVIUM; HOLOCENE AND > LATE WISCONSIN > >cc; COLLUVIUM; HOLOCENE TO MIDDLE PLEISTOCENE > >lsa; LAKE SAND; WISCONSIN >lca; LAKE SILT AND CLAY; WISCONSIN >lla; SLACKWATER LAKE SILT, CLAY, SAND, AND GRAVEL; WISCONSIN >gg; OUTWASH SAND AND GRAVEL; WISCONSIN >gs; OUTWASH SAND; WISCONSIN >tlgg; LOAMY TILL--Ground moraine; WISCONSIN >tlgs; LOAMY TILL--Stagnation moraine; WISCONSIN >tlge; LOAMY TILL--End moraine; WISCONSIN >tlh; LOAMY TILL; WISCONSIN >tla; LOAMY TILL; WISCONSIN > >lcd; LAKE SILT AND CLAY; EARLY WISCONSIN > >tll; LOAMY TILL; EARLY WISCONSIN OR ILLINOIAN > >cr; COLLUVIUM; WISCONSIN AND ILLINOIAN >elb; LOESS; WISCONSIN AND ILLINOIAN > >lci; LAKE SILT AND CLAY; ILLINOIAN >gsi; OUTWASH SILT, SAND, AND GRAVEL; ILLINOIAN >kgi; ICE-CONTACT SAND AND GRAVEL; ILLINOIAN >tal; CLAYEY TILL; ILLINOIAN >tkmg; LOAMY TILL--Ground moraine; ILLINOIAN >tkme; LOAMY TILL--End moraine; ILLINOIAN >tam; CLAYEY TILL; ILLINOIAN >tkpg; LOAMY TILL--Ground moraine; ILLINOIAN >tkpe; LOAMY TILL--End moraine; ILLINOIAN > >ggp; OUTWASH SAND AND GRAVEL; PRE-ILLINOIAN >tlk; LOAMY TILL; PRE-ILLINOIAN >gso; SAND AND GRAVEL; PRE-ILLINOIAN >tck; CLAY LOAM TILL; PRE-ILLINOIAN >tln; DISCONTINUOUS LOAMY TILL; PRE-ILLINOIAN >tls; DISCONTINUOUS LOAMY AND CLAYEY TILL; PRE-ILLINOIAN >gsq; OUTWASH SAND AND GRAVEL; PRE-ILLINOIAN >tlt; LOAMY TILL; PRE-ILLINOIAN >tcj; DISCONTINUOUS CLAYEY TILL; PRE-ILLINOIAN > >zld; CLAYEY SILT TO SILTY CLAY DECOMPOSITION RESIDUUM; QUATERNARY AND > TERTIARY >zrj; SANDY TO SILTY CLAY DECOMPOSITION RESIDUUM AND > CLAY SOLUTION RESIDUUM; QUATERNARY AND TERTIARY >rcb; THIN CHERTY CLAY SOLUTION RESIDUUM; QUATERNARY AND TERTIARY > >R; BEDROCK; PRE-TERTIARY >; >lake or river >f; MANMADE FILL--Chiefly open pit coal mine waste. > Mapped only in Illinois; > The geo_net.aat INFO file consists of the following item: LTYPE--Refers to the type of arc and is one of the following: "Contact," "Shoreline," or "Map Boundary." The desm_lin coverage contains lines of linear glacial features and loess isopachs. The desm_lin.aat INFO file consists of the following item: LTYPE--Refers to the type of feature described by the arc and is one of the following: "OUTER LIMIT OF SIGNIFICANT GLACIAL ADVANCE --Marked by distal edge of end moraine or outer limit of till," "BURIED PLEISTOCENE RIVER CHANNEL," or "LOESS ISOPACH" with the appropriate thickness. The coverage is annotated with loess isopach thicknesses in meters. The desm_pnt coverage contains points that represent features shown on the map. The desm_pnt.pat INFO file consists of the following items: PTYPE--Refers to the type of feature shown at the point and is one of the following: "STRIATIONS--Showing direction of glacier movement;" "Lava Creek B (Pearlette O) volcanic ash bed;" or "LOCATION OF SIGNIFICANT STRATIGRAPHIC SECTION--." ANGLE--Refers to the direction of feature or ice movement; in degrees measured clockwise from north. MRK--Number of symbol from markerset (glacial.mrk)used to plot the feature. Lss_poly is a polygon coverage containing areas of loess overlying the map area. The lss_poly.pat INFO file contains the following items: TEXT--Refers to the type of loess represented by the polygon and one of the following: "Late Wisconsin loess less than 2 m thick over older late Wisconsin and early Wisconsin(?) or Illinoian(?) till;" "'Wisconsin' loess and eolian sand over Sangamon or late Sangamon paleosol developed in Illinoian till or other Illinoian deposit--Loess and sand more than 6 m thick;" "'Wisconsin' loess and eolian sand over Sangamon or late Sangamon paleosol developed in Illinoian till or other Illinoian deposit--Loess and sand 2-6 m thick;" "'Wisconsin' loess and eolian sand over Sangamon or late Sangamon paleosol developed in Illinoian till or other Illinoian deposit--Loess and sand 2-6 m thick--Sangamon paleosol generally absent;" "'Wisconsin' loess more than 6 m thick over Sangamon paleosol in 2-6 m of Loveland Loess (Illinoian) over Yarmouth paleosol developed in pre-Illinoian till;" "'Wisconsin' loess and eolian sand over 'Yarmouth-Sangamon' to late Sangamon paleosol developed in pre-Illinoian till--Loess more than 6 m thick;" "'Wisconsin' loess and eolian sand over 'Yarmouth-Sangamon' to late Sangamon paleosol developed in pre-Illinoian till--Loess and sand 2-6 m thick;" "'Wisconsin' loess and eolian sand over 'Yarmouth-Sangamon' to late Sangamon paleosol developed in pre-Illinoian till--Loess 2-6 m thick;" "'Wisconsin' loess and eolian sand over 'Yarmouth-Sangamon' to late Sangamon paleosol developed in pre-Illinoian till--Loess 2-4 m thick, locally more than 6 m thick, with or without paleosol;" "'Wisconsin' loess and eolian sand or loamy sediment over extensive erosion surface on pre-Illinoian till--Paleosol generally absent--Loess and minor sand more than 6 m thick;" "'Wisconsin' loess and eolian sand or loamy sediment over extensive erosion surface on pre-Illinoian till--Paleosol generally absent--Loess 2-6 m thick;" and "'Wisconsin' loess and eolian sand or loamy sediment over extensive erosion surface on pre-Illinoian till--Paleosol generally absent--Loess or sand less than 2 m thick or loamy sediment less than 1 m thick." The map legend also showed a category of "'Wisconsin' loess and eolian sand over Sangamon or late Sangamon paleosol developed in Illinoian till or other Illinoian deposit-- Loess and sand less than 2 m thick, but the database creators were unable to locate the polygon(s). TYPE--Refers to an arbitrary number applied each of the text types for ease of manipulating the data. LSS--a number representing the marker number in the markerset used to plot the data. Hydr_lin is a line coverage created after scanning and vectorizing 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 and vectorizing 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 the 1:2,000,000-scale National Atlas of the United States coverage of States Boundaries of the United States. The coverage contains lines representing state boundaries. The bnd_lin.aat INFO file contains the item LTYPE which contains the values "State Boundary" or "Map Boundary." The coverage is annotated with state names along boundaries. Bnd_poly is a polygon coverage created from the 1:2,000,000-scale National Atlas of the United States coverage of County Boundaries of the United States. Polygons are attributed with state and county names. Rd_lin is a line coverage created from the 1:2,000,000-scale National Atlas of the united states coverage of Major Roads of the United States. The coverage contains lines representing roads in the United States. All attributes have been stripped from the lines except "FEATURE," "NAME," " and "STATE." FEATURE is a listing of the highway type. NAME is a list of of the highway number or numbers. Rr_lin is a line coverage created from 1:2,000,000-scale DLG coverages. The coverage contains lines representing railroads in the U.S. It has no user-defined attributes. Grid_lin is a line coverage created to display projection lines in one-degree increments. It has no user-defined attributes. Entity_and_Attribute_Detail_Citation: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Enterprise Publishing Network 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: NA Contact_Electronic_Mail_Address: NA Resource_Description: Miscellaneous Investigations Series Map I-1420 (NK-19), "Quaternary Geologic Map of the Des Moines 4° × 6° Quadrangle, United States" 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. Although this information product, for the most part, is in the public domain, it also contains copyrighted materials as noted in the text. Permission to reproduce copyrighted items for other than personal use must be secured from the cpyright owner. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE, SHP Format_Version_Number: 9.1 File_Decompression_Technique: WinZip Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Fees: No cost for the digital files. Technical_Prerequisites: ArcInfo 8.3 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 (NK-19), "Quaternary Geologic Map of the Des Moines 4° × 6° Quadrangle, United States" (printed edition) 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. Although this information product, for the most part, is in the public domain, it also contains copyrighted materials as noted in the text. Permission to reproduce copyrighted items for other than personal use must be secured from the cpyright owner. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. 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://ask.usgs.gov/prices/ for current price of printed edition. Metadata_Reference_Information: Metadata_Date: 20080701 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, MS980, 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