Identification_Information: Citation: Citation_Information: Originator: David S. Fullerton Originator: Roger B. Colton Originator: Charles A. Bush Publication_Date: 2012 Title: Quaternary Geologic Map of the Glasgow 1° x 2° Quadrangle, Montana Edition: 1.0 Geospatial_Data_Presentation_Form: (map) Series_Information: Series_Name: USGS Open-File Report Issue_Identification: OF 2012-1217 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Online_Linkage: Description: Abstract: The Glasgow quadrangle encompasses approximately 16,084 km2 (6,210 mi2). The northern boundary is the Montana/Saskatchewan (U.S./Canada) boundary. The quadrangle is in the Northern Plains physiographic province and it includes the Boundary Plateau, Peerless Plateau, and Larb Hills. The primary river is the Milk River. The map units are surficial deposits and materials, not landforms. Deposits that comprise some constructional landforms (e.g., ground-moraine deposits, end-moraine deposits, and stagnation-moraine deposits, all composed of till) are distinguished for purposes of reconstruction of glacial history. Surficial deposits and materials are assigned to 23 map units on the basis of genesis, age, lithology or composition, texture or particle size, and other physical, chemical, and engineering characteristics. It is not a map of soils that are recognized in pedology or agronomy. Rather, it is a generalized map of soils recognized in engineering geology, or of substrata or parent materials in which pedologic or agronomic soils are formed. Glaciotectonic (ice-thrust) structures and deposits are mapped separately, represented by a symbol. The surficial deposits are glacial, ice-contact, glaciofluvial, alluvial, lacustrine, eolian, colluvial, and mass-movement deposits. Residuum, a surficial material, also is mapped. Till of late Wisconsin age is represented by three map units. Till of Illinoian age also represented locally but is widespread in the subsurface. This map was prepared to serve as a database for compilation of a Quaternary geologic map the United States and Canada (scale 1:1,000,000). Letter symbols for the map units are those used for the same units in the Quaternary Geologic Atlas of the United States map series. Purpose: The Quaternary geologic map of the Glasgow quadrangle, northeastern Montana, was prepared to provide a database for compilation of a Quaternary geologic map of the Lethbridge 4° x 6° quadrangle, United States and Canada, at scale 1:1,000,000, for the U.S. Geological Survey Quaternary Geologic Atlas of the United States map series. This map was compiled from data from many sources, at several different map scales. That information was generalized and simplified, and then transferred to a base map at 1:250,000 scale to serve as the base for final reduction to 1:1,000,000, the nominal reading scale of maps in the Quaternary Geologic Atlas of the United States map series. This map is the generalized and simplified 1:250,000 scale compilation. Letter symbols for the map units are those used for the same units in the Quaternary Geologic Atlas of the United States map series. The map summarizes new, and selected published and unpublished, geologic information for public use and for use by Federal, State, and local governmental agencies for land use planning, including assessment of natural resources, natural hazards, recreation potential, and land use management. It also is a base from which a variety of maps relating to earth surface processes and Quaternary geologic history can be derived. Some of the map data is generalized. For example, small areas of Illinoian-age till (mapunit tks)that were mapped separately at larger scales by others here are combined as single polygons. Many surficial deposits that can be shown accurately at 1:250,000 scale are omitted here because they are too small to be shown at 1:1,000,000 scale. Supplemental_Information: Compilation scale 1:250,000 DATASETS INCLUDED IN THIS GEOSPATIAL DATABASE: Geology Feature Dataset: glasgow_geo_ply - geologic unit and lake polygons glasgow_geo_line - contacts and shorelines glasgow_glac_line - linear glacial features glasgow_point - location of important stratigraphic sections Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1976 Ending_Date: 2010 Currentness_Reference: Publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None Planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -108.00 East_Bounding_Coordinate: -106.00 North_Bounding_Coordinate: 49.00 South_Bounding_Coordinate: 48.00 Keywords: Theme: Theme_Keyword_Thesaurus: American Geological Institute (AGI) Glossary of Geology Theme_Keyword: Alluvium Theme_Keyword: Colluvium Theme_Keyword: Drumlin Theme_Keyword: Earthflow deposits Theme_Keyword: End-moraine deposits Theme_Keyword: Eolian deposits Theme_Keyword: Erratic boulders Theme_Keyword: Esker Theme_Keyword: Flood-plain and channel alluvium Theme_Keyword: Glacial readvance Theme_Keyword: Glaciofluvial deposits Theme_Keyword: Glaciotectonic deposits Theme_Keyword: Glaciotectonic structures Theme_Keyword: Ground-moraine deposits Theme_Keyword: Ice-contact deposits Theme_Keyword: Ice-molded landforms Theme_Keyword: Ice-scoured landforms Theme_Keyword: Lake deposits Theme_Keyword: Landslide deposits Theme_Keyword: Minor moraines Theme_Keyword: Mudflow deposits Theme_Keyword: Outwash deposits Theme_Keyword: Residuum Theme_Keyword: Sheetwash alluvium Theme_Keyword: Stagnation-moraine deposits Theme_Keyword: Surficial deposits Theme_Keyword: Till Place: Place_Keyword_Thesaurus: U.S. Board on Geographic Names (BGN) Place_Keyword: Beaver Creek Place_Keyword: Boundary Plateau Place_Keyword: Canada Place_Keyword: Canadian Shield Place_Keyword: Fort Peck (MT) Place_Keyword: Frazer (MT) Place_Keyword: Glasgow (MT) Place_Keyword: Hinsdale (MT) Place_Keyword: Larb Hills Place_Keyword: Malta (MT) Place_Keyword: Milk River Place_Keyword: Missouri River Place_Keyword: Montana Place_Keyword: Musselshell River Place_Keyword: Nashua (MT) Place_Keyword: Opheim (MT) Place_Keyword: Peerless Plateau Place_Keyword: Tiger Butte Place_Keyword: West Fork Poplar River Place_Keyword: Whitewater (MT) Place_Keyword: United States 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 Pleistocene Temporal_Keyword: Holocene Temporal_Keyword: Illinoian Temporal_Keyword: Late Pleistocene Temporal_Keyword: Late Wisconsin Temporal_Keyword: Pleistocene Temporal_Keyword: Pliocene Temporal_Keyword: Middle Pleistocene Temporal_Keyword: Pre-Illinoian Temporal_Keyword: Pre-Quaternary Temporal_Keyword: Quaternary Temporal_Keyword: Tertiary Access_Constraints: None Use_Constraints: None. Users of this geospatial database and geologic information derived there should acknowledge the U.S. Geological Survey as the source of the data. Although software enables a user to display images at various scales, map data in this report should not be used at scales larger than 1:250,000. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: David S. Fullerton Contact_Organization: U.S. Geological Survey Contact_Position: Research Geologist 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) 236-1232 Contact_Facsimile_Telephone: (303) 236-0214 Contact_Electronic_Mail_Address: fullerton@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2012/1217/OFR-2012-1217_glasgow.pdf> Browse_Graphic_File_Description: Graphic layout of map layout. Browse_Graphic_File_Type: PDF Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2012/1217/OFR-2012-1217_figure1.pdf> Browse_Graphic_File_Description: Drawing of regional ice flow during maximum late Wisconsin glaciation. Browse_Graphic_File_Type: PDF Data_Set_Credit: Charles A. Bush, U.S. Geological Survey, served as primary author of the GIS database and produced the map layout. Native_Data_Set_Environment: Windows_XP, 4.0, Intel ArcInfo version 9.2 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Compilation of geologic data: Data were entered and checked by the geologist who made the field observations and compilation. The attributes of this geospatial data set consist of text identifiers and numeric codes that indicate the identity of the geological unit or type of geologic feature, and determine how each feature is colored or symbolized. To check the attribute accuracy, a color check plot was visually compared to the geologist’s original compilation. Discrepancies between the digital geospatial data set and the original analog compilation were corrected as needed. Machine-created listings of unique attribute values were used to identify spelling errors or other inconsistencies, and corrections were made as needed. This map has been 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: No features that could be accurately represented at a scale of 1:1,000,000 were eliminated or generalized. All geospatial database elements are attributed. 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 1:250,000. The digital file was prepared at 1:250,000 nominal viewing scale. If the map is enlarged to larger scales (for example, 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: U.S. Geological Survey Publication_Date: 1977 Title: Topographic Map of Glasgow, Montana Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Source_Scale_Denominator: 250000 Type_of_Source_Media: paper map Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19530101 Ending_Date: 19741231 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Glasgowhydr Source_Contribution: Hydrologic base map data Process_Step: Process_Description: The geology for the map was compiled by David S. Fullerton and Roger B. Colton, U.S. Geological Survey Process_Date: 2010 Process_Step: Process_Description: The geologic database was compiled using ArcInfo. Digitization of map features was performed by C.A.Bush using the author’s 1:250,000 scale materials. ArcInfo coverages of the features were created by Bush. Process_Date: 2011 Process_Step: Process_Description: Checkplots of the coverages were printed and checked against source materials for accuracy and completeness. The database information was checked visually, as well as by using various routines in ArcInfo, for accuracy and consistency. Map layout was produced by Bush. Process_Date: 2011 Process_Step: Process_Description: Check plot was submitted for peer review. Plot was reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. Revisions were made to the geospatial database as needed. Process_Date: 2010 Process_Step: Process_Description: Metadata and geodatabase conversions for the Geologic map of the Glasgow 1° x 2° Quadrangle, Montana map were created by Bush from the ArcInfo coverages Process_Date: 2012 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Transverse Mercator Transverse_Mercator: Scale_Factor_at_Central_Meridian: 1. Longitude_of_Central_Meridian: -107.00 Latitude_of_Projection_Origin: 48.00 False_Easting: 0.00000 False_Northing: 0.00000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 20 Ordinate_Resolution: 20 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.98 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: DATASETS INCLUDED IN THIS GEOSPATIAL DATABASE, glasgow_geology.gdb: Geology Feature Dataset: glasgow_geo_ply - geologic unit and lake polygons glasgow_geo_line – contacts and shorelines glasgow_glac_line – linear glacial features glasgow_point - points showing the location of important stratigraphic sections The glasgow_geo_ply feature class includes polygons that are map units and open water Explanation of fields: UNIT--Refers to the type of polygon and is either the map unit symbol, Lake or River. DESCRIPTION--A description of the deposits and materials that make up the map units; blank where not applicable. (See below.) See textonly 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, LATE PLEISTOCENE AND MIDDLE PLEISTOCENE; HOLOCENE AND PLEISTOCENE; QUATERNARY AND TERTIARY; LATE WISCONSIN; ILLINOIAN; PRE-QUATERNARY; or blank where not applicable. (See table below.) Descriptions of geologic units in the dataset: >UNIT; DESCRIPTION; AGE (where applicable) >al; FLOOD-PLAIN AND CHANNEL ALLUVIUM; HOLOCENE AND LATE WISCONSIN >agu; FLOOD-PLAIN AND CHANNEL ALLUVIUM; HOLOCENE AND LATE WISCONSIN >als; FLOOD-PLAIN AND CHANNEL ALLUVIUM, LAKE DEPOSITS, AND SHEETWASH ALLUVIUM; > HOLOCENE AND LATE WISCONSIN >lca; LAKE CLAY AND SILT; HOLOCENE AND LATE WISCONSIN >lss; LAKE SILT AND SAND; HOLOCENE AND LATE WISCONSIN >eu; EOLIAN SILT AND SAND; HOLOCENE AND LATE WISCONSIN > > >wla; SHEETWASH ALLUVIUM; HOLOCENE, LATE PLEISTOCENE, AND MIDDLE PLEISTOCENE >eux; EOLIAN SILT AND SAND; HOLOCENE, LATE PLEISTOCENE, AND MIDDLE PLEISTOCENE >jea; SLUMP-BLOCK LANDSLIDE DEPOSITS AND EARTHFLOW AND MUDFLOW DEPOSITS; > HOLOCENE, LATE PLEISTOCENE, AND MIDDLE PLEISTOCENE >caa; COLLUVIUM, SHEETWASH ALLUVIUM, AND LANDSLIDE DEPOSITS; HOLOCENE, > LATE PLEISTOCENE, AND MIDDLE PLEISTOCENE >cad; COLLUVIUM, SHEETWASH ALLUVIUM, LAKE DEPOSITS, AND GLACIOFLUVIAL DEPOSITS; > HOLOCENE, LATE PLEISTOCENE, AND MIDDLE PLEISTOCENE >cgx; GRAVELLY AND SANDY COLLUVIUM; HOLOCENE, LATE PLEISTOCENE, AND MIDDLE PLEISTOCENE >xcg; CLAYEY DISINTEGRATION RESIDUUM, COLLUVIUM, SHEETWASH ALLUVIUM, AND TILL; > HOLOCENE, LATE PLEISTOCENE, AND MIDDLE PLEISTOCENE > > >xlq; LOAMY DISINTEGRATION RESIDUUM, COLLUVIUM, AND SHEETWASH ALLUVIUM; > HOLOCENE AND PLEISTOCENE > > >xly; LOAMY DISINTEGRATION RESIDUUM; QUATERNARY AND TERTIARY >xsh; SANDY TO LOAMY DISINTEGRATION RESIDUUM; QUATERNARY AND TERTIARY > > >tlx; LOAMY TILL-Ground-moraine deposits; LATE WISCONSIN >tlx(e); LOAMY TILL-End-moraine deposits; LATE WISCONSIN >tlx(s); LOAMY TILL-Stagnation-moraine deposits; LATE WISCONSIN >kg; ICE-CONTACT SAND AND GRAVEL; LATE WISCONSIN >gg; OUTWASH SAND AND GRAVEL; LATE WISCONSIN > > >tks; LOAMY OR SANDY TILL; ILLINOIAN >ggi; OUTWASH SAND AND GRAVEL; ILLINOIAN > > >R; BEDROCK; PRE-QUATERNARY > > Waterbody-Lake > Waterbody-River >f; MAN-MADE LAND > > >IT KNOWN OR SUSPECTED GLACIOTECTONIC DEPOSITS OR GLACIOTECTONIC TERRAIN > > glasgow_geo_line Explanation of fields: DESCRIPTION--Refers to the type of arc and is one of the following: Contact, Shoreline, or Map Boundary glasgow_glac_line Explanation of fields: DESCRIPTION describes the feature represented by the line and contains one of the following: LIMIT OF LATE WISCONSIN GLACIATION LIMIT OF LATE WISCONSIN GLACIATION-Inferred LIMIT OF ILLINOIAN GLACIATION LIMIT OF ILLINOIAN GLACIATION-Inferred LIMIT OF A GLACIAL READVANCE, OR POSITION OF A SIGNIFICANT STILLSTAND OF AN ICE MARGIN LIMIT OF A GLACIAL READVANCE, OR POSITION OF A SIGNIFICANT STILLSTAND OF AN ICE MARGIN-Inferred MINOR MORAINES SOUTHEAST LIMIT OF RESIDUAL ERRATIC GLACIAL BOULDERS ON DISSECTED BEDROCK SURFACES COVERED BY DISINTEGRATION RESIDUUM ICE-MOLDED OR ICE-SCOURED LANDFORM-Linear drumlin, rock drumlin, or fluting ESKER BURIED BEDROCK VALLEYS OF THE ANCESTRAL MISSOURI AND MUSSELSHELL RIVERS glasgow_point glasgow_point is a point feature class indicating the locations of important stratigraphic sections Explanation of fields: DESCRIPTION describes the location of IMPORTANT STRATIGRAPHIC SECTIONS and contains one of the following: IMPORTANT STRATIGRAPHIC SECTION-No. 1, Loring section IMPORTANT STRATIGRAPHIC SECTION-No. 2, Anderson Ranch section IMPORTANT STRATIGRAPHIC SECTION-No. 3, Glasgow Air Force Base site Entity_and_Attribute_Detail_Citation: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Information Services, Box 25286 Contact_Address: Address_Type: Mailing address 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: NA Contact_Electronic_Mail_Address: 1-888-ASK-USGS Resource_Description: Open-File Report 2012-1217 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 copyright 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: ARCGIS Geodatabase, Shapefile Format_Version_Number: 9.2 File_Decompression_Technique: WinZip Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Fees: No cost for the digital files. 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: Open-File Report OF 2012-1217, Quaternary Geologic Map of the Glasgow 1° × 2° 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 copyright 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: Visit http://store.usgs.gov for Print on Demand instructions Fees: Call 1-888-ASK-USGS or visit http://geography.usgs.gov/ for current price of printed edition. Metadata_Reference_Information: Metadata_Date: 2012 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Charles A. Bush Contact_Organization: U.S. Geological Survey Contact_Position: Scientist Emeritus 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