Geology and Mineral Deposits of the Keweenaw Peninsula and Vicinity, Michigan

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: William F. Cannon
Originator: Michele E. McRae
Originator: Suzanne W. Nicholson
Publication_Date: 1999
Title:
Geology and Mineral Deposits of the Keweenaw Peninsula and Vicinity, Michigan
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 99-0149
Other_Citation_Details:
ArcView project and coverages (3MB) and ARC/INFO export .e00 files (3MB).
Online_Linkage: http://pubs.usgs.gov/of/1999/of99-149/
Description:
Abstract:
The area of this data set includes the classic geology and mineral deposits of the Keweenaw Peninsula, renowned for the occurrence of great volumes of Middle Proterozoic flood basalts and the world's largest concentration of native copper. Native copper was mined there continuously from the 1840's to the 1960's. For the earlier part of that period the Keweenawan native copper district was the principal source of copper for the United States.
Purpose:
This database is intended to summarize and update a wealth of very detailed geologic maps of the region. The related hardcopy publication, Geologic Map of the Keweenaw Peninsula and Adjacent Area, Michigan (Cannon and Nicholson), is part of a set of maps portraying the regional geology of the Midcontinent rift on the south shore of Lake Superior.
The geology and mineral deposits of the district have been painstakingly studied for many years. Milestones in the studies were the extensive report of Butler and Burbank (1929) and the detailed geologic maps produced by the USGS in the 1950's. The latter were aided greatly by the Calumet and Hecla Copper Company which provided USGS geologists with a wealth of exploration and production data that allowed construction of detailed 1:24,000 scale maps for the entire peninsula. Those maps are the principal source of information used to compile this data set. We have attempted to preserve as much detail as possible at 1:100,000 scale. For rocks northwest of the Keweenaw fault we have made few changes to previously mapped geology. New data is limited to deposits of chalcocite and native copper discovered since the previous mapping in the 1950's, to a more detailed study of rhyolite bodies, and to radiometric age determinations. For areas southeast of the Keweenaw fault, new geophysical data and drill holes allow some new inferences about the geology of volcanic rocks covered by a thin veneer of Jacobsville Sandstone.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1999
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -89.0
East_Bounding_Coordinate: -87.5
North_Bounding_Coordinate: 47.5
South_Bounding_Coordinate: 46.4
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: geology
Theme_Keyword: geologic maps
Theme_Keyword: bedrock geologic units
Theme_Keyword: mineral resources
Theme_Keyword: geologic structure
Theme_Keyword: geospatial datasets
Theme:
Theme_Keyword_Thesaurus: National Geologic Map Database Catalog themes, augmented
Theme_Keyword: 3100 - Vector
Theme_Keyword: 1400 - Resources
Theme_Keyword: 1401 - Metals
Theme_Keyword: 3110 - ESRI
Theme_Keyword: 3111 - coverage
Theme_Keyword: 3112 - export
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
Place_Keyword: f26013 = Baraga
Place_Keyword: f26061 = Houghton
Place_Keyword: f26083 = Keweenaw
Access_Constraints: None
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bill Cannon
Contact_Address:
Address_Type: mailing
Address: MS 954, U.S. Geological Survey
City: Reston
State_or_Province: Virginia
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: (703) 648-7345
Contact_Electronic_Mail_Address: wcannon@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: http://pubs.usgs.gov/of/1999/of99-149/index.pdf
Browse_Graphic_File_Description:
A PDF representation of the geology and mineral deposits of the Keweenaw Peninsula and vicinity, Michigan
Browse_Graphic_File_Type: PDF
Native_Data_Set_Environment: ESRI ARC/INFO version 7.1.2
Data_Quality_Information:
Lineage:
Process_Step:
Process_Description:
The point features in the coverage ATTITUDE represent orientation of bedding or bedding features. However, they are not the actual geographic location of measurements. Rather, symbols thought to adequately represent the trend of geologic units were selected and generalized from larger scale geologic maps (1:24,000 and 1:62,500) and compiled on 1:100,000 scale mylar overlay. These were digitized using GSMAP software and converted to ARC/INFO format. Line features and duplicate points were deleted, the names of P1 and P2 changed to STRIKE and DIP, respectively, and the field ANGLE added and populated.
Process_Step:
Process_Description:
The coverage BURIED are previously unpublished features covered by the Jacobsville Sandstone. They were mapped as a result of new interpretations of aeromagnetic and gravity data and compiled on 1:100,000 scale mylar overlays. They were digitized using GSMAP software and converted to ARC/INFO format. Line topology was constructed and the more descriptive attribute TYPE added.
Process_Step:
Process_Description:
The arcs in the coverage CGL represent conglomerates interbedded with flows of the Portage Lake Volcanics. They were digitized from 1:24,000 scale geologic maps using GSMAP software. GSMAP files were converted to ARC/INFO format for editing, building topology, and populating attribute tables.
Process_Step:
Process_Description:
The polygons in the coverage CHALC represent known chalcocite bodies. They were compiled on 1:100,000 scale mylar base from detailed unpublished maps from the Michcan Copper Company, Ltd. and then digitized in GSMAP. GSMAP files were converted to ARC/INFO for editing, building topology, and populating attribute tables.
Process_Step:
Process_Description:
The coverage CORD is a 15 minute by 15 minute geographic coordinate grid which was created using the FISHNET option of the GENERATE command in ARC/INFO. It was then projected to the UTM coordinate system and clipped to match the extent of the rest of the Keweenaw data set.
Process_Step:
Process_Description:
The coverage FISSURE were digitized from 1:24,000 scale geologic maps using GSMAP software and converted to ARC/INFO format. In ARC/INFO, topology was built, and attribute fields added and populated.
Process_Step:
Process_Description:
The coverage GEOLOGY were digitized from 1:24,000 and 1:62,500 scale maps using GSMAP software and converted to ARC/INFO format. Imported geologic and fault lines were adjusted to match shorelines from the USGS 1:100,000 scale Digital Line Graphs (DLG's). Any unclosed polygons or dangling arcs were then cleaned manually before building polygon topology. Route systems representing faults (route.fault_thrust and route.fault_unclass) were created and attributed.
Process_Step:
Process_Description:
The coverage LAKES was extracted from the USGS 1:100,000 scale DLG hydrographic data. DLG data for the quadrangles of the study area were downloaded from the EROS Data Center and converted to ARC/INFO format. Features representing lakes, wetland areas, and rivers were placed in separate coverages. Finally, coverages from each quadrangle representing these features were appended and clipped to the extent of the project area.
Process_Step:
Process_Description:
The region features in the coverage LODES represent native copper lodes of the Keweenaw Peninsula. They were digitized from 1:24,000 scale geologic maps using GSMAP software and converted to ARC/INFO format. In ARC/INFO, polygon and region topology were constructed, and attribute tables added and populated.
Process_Step:
Process_Description:
The arc features in the coverage MAP represent distinct magnetic trends in the study area. They were digitized in GSMAP from a 1:250,000 scale hand-contoured magnetic compilation and converted to ARC/INFO format.
Process_Step:
Process_Description:
The coverage MINES were digitized from 1:24,000 scale geologic maps using GSMAP software and converted to ARC/INFO format. In ARC/INFO topology was built, and attribute fields added and populated.
Process_Step:
Process_Description:
The outcrop data in the coverage OUTCROP were generalized from 1:24,000 and 1:62,500 scale maps to 1:100,000 scale mylar base maps. These sheets were scanned as TIFF's and converted to ARC/INFO using the IMAGEGRID command. The grids created were registered using the CONTROLPOINTS and GRIDWARP commands and then converted to vector coverages using the GRIDLINE command. Finally, the individual coverages were appended and polygon topology built.
Process_Step:
Process_Description:
The coverage RIVERS was extracted from the USGS 1:100,000 scale DLG hydrographic data and converted to ARC/INFO format. Features representing lakes, wetland areas, and rivers were placed in separate coverages. Finally, coverages from each quadrangle representing these feature types were appended and clipped to the extent of the project area.
Process_Step:
Process_Description:
The coverage ROADS was extracted from the USGS 1:100,000 scale SDTS transportation data. SDTS data for the study area were downloaded from the EROS Data Center and converted to ARC/INFO format. Coverages of individual quadrangles were then appended and attributed.
Process_Step:
Process_Description:
The arcs from the coverage STRUCTUR represent significant miscellaneous structural features in the project area. The syncline was digitized in GSMAP from a 1:62,500 scale geologic map. The Limestone Mountain Structural Zone is a newly published feature. It has been interpreted from aeromagnetic and gravity data. Its location and extent are supported by outcrop data. The zone was compiled on a 1:100,000 scale mylar base, digitized in GSMAP, and converted to ARC/INFO.
Process_Step:
Process_Description:
The polygon features in the coverage WETLANDS were extracted from 1:100,000 scale DLG hydrographic data. These DLG's were downloaded from the EROS Data Center and converted to ARC/INFO format. Features representing lakes, wetland areas, and rivers were placed in separate coverages. Finally, coverages from each quadrangle were appended and clipped to the extent of the project area.
Process_Step:
Process_Description:
The lines in the coverage XSECTION were drawn by the authors. They indicate where detailed cross sections were constructed. They were drawn on the 1:100,000 scale mylar base, digitized in GSMAP, and converted to ARC/INFO.
Process_Step:
Process_Description: Creation of original metadata record
Process_Date: 20000724
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jennifer Lenz
Contact_Organization: US Geological Survey
Contact_Address:
Address_Type: mailing
Address: 12201 Surise Valley Drive, Mail Stop 918
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 703-648-6974
Contact_Facsimile_Telephone: 703-648-6560
Contact_Electronic_Mail_Address: pschweitzer@usgs.gov
Logical_Consistency_Report:
This digital database was compiled from a variety of sources which are documented on the file README.doc.
Completeness_Report: complete
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:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 16
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -87
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: unknown
Ordinate_Resolution: unknown
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: NAD27
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: GEOLOGY.PAT
Entity_Type_Definition: Geologic map units
Entity_Type_Definition_Source: OFR-99-0149
Attribute:
Attribute_Label: SYMBOL
Attribute_Definition: Abbreviation of named unit
Attribute_Definition_Source: OFR-99-0149, Attribute UNIT_NAME
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Pzu
Enumerated_Domain_Value_Definition: Paleozoic undivided
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Yj
Enumerated_Domain_Value_Definition: Jacobsville Sandstone
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Yf
Enumerated_Domain_Value_Definition: Freda Sandstone
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Yfa
Enumerated_Domain_Value_Definition: Freda Sandstone, andesite member
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Yn
Enumerated_Domain_Value_Definition: Nonesuch Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Yc
Enumerated_Domain_Value_Definition: Copper Harbor Conglomerate
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ycb
Enumerated_Domain_Value_Definition: Copper Harbor Conglomerate, Basalt Member
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Yi
Enumerated_Domain_Value_Definition: Indiana felsite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Yfi
Enumerated_Domain_Value_Definition: Intrusive Rhyolite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Yb
Enumerated_Domain_Value_Definition: Mt. Bohemia stock
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ypl
Enumerated_Domain_Value_Definition: Portage Lake Volcanics undivided
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Yplf
Enumerated_Domain_Value_Definition: Rhyolite: Portage Lake Volcanics
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Yplg
Enumerated_Domain_Value_Definition: Greenstone Flow: Portage Lake Volcanics
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Yplk
Enumerated_Domain_Value_Definition: Kearsarge Flow: Portage Lake Volcanics
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Yplgr
Enumerated_Domain_Value_Definition: Gratiot Flow: Portage Lake Volcanics
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ypls
Enumerated_Domain_Value_Definition: Scales Creek Flow: Portage Lake Volcanics
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Yplc
Enumerated_Domain_Value_Definition: Copper City Flow: Portage Lake Volcanics
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Yplb
Enumerated_Domain_Value_Definition: Bohemia Conglomerate: Portage Lake Volcanics
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Yd
Enumerated_Domain_Value_Definition: Diabase dikes
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ypu
Enumerated_Domain_Value_Definition: Powder Miss Group undivided
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ys
Enumerated_Domain_Value_Definition: Siemens Creek Volcanics
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Xm
Enumerated_Domain_Value_Definition: Michigamme Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Wgr
Enumerated_Domain_Value_Definition: Granitic gneiss
Attribute:
Attribute_Label: SUPERGROUP
Attribute_Definition: Map unit supergroup
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Marquette Range
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Keweenawan
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (blank)
Attribute:
Attribute_Label: GROUP
Attribute_Definition: Map Unit Group
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Baraga
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Bergland
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Oronto
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Powder Mill
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (blank)
Attribute:
Attribute_Label: ERA
Attribute_Definition: Geologic time scale era
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Proterozoic
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Paleozoic
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Archean
Attribute:
Attribute_Label: PERIOD
Attribute_Definition: Geological Time Scale Period
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: undivided
Enumerated_Domain_Value_Definition: No definite period
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Late Archean
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Early Proterozoic
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Middle Proterozoic
Attribute:
Attribute_Label: RK_TYPE
Attribute_Definition: Primary rock type of named unit
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sedimentary
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Metamorphic
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Intrusive
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Extrusive
Attribute:
Attribute_Label: SUBUNIT_NAME
Attribute_Definition:
Subdivision within geologic unit. Unit_name given as Domain definition..
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: graywacke
Enumerated_Domain_Value_Definition: Michigamme Unit
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Lake Shore Traps
Enumerated_Domain_Value_Definition: Copper Harbor Conglomerate Unit
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Bear Lake Andesite
Enumerated_Domain_Value_Definition: Freda Sandstone Unit
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Bohemia Conglomerate
Enumerated_Domain_Value_Definition: Portage Lake Volcanics member
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Copper City Flow
Enumerated_Domain_Value_Definition: Portage Lake Volcanics member
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: felsite
Enumerated_Domain_Value_Definition: Portage Lake Volcanics member
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Greenstone flow
Enumerated_Domain_Value_Definition: Portage Lake Volcanics member
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Gratiot Flow
Enumerated_Domain_Value_Definition: Portage Lake Volcanics member
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kearsarge flow
Enumerated_Domain_Value_Definition: Portage Lake Volcanics member
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Scales Creek Flow
Enumerated_Domain_Value_Definition: Portage Lake Volcanics member
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (blank)
Enumerated_Domain_Value_Definition: No Subunit_name
Attribute:
Attribute_Label: AGE
Attribute_Definition: Age of rock formation in Millions of years (Ma)
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1086
Range_Domain_Maximum: 2750
Attribute_Units_of_Measure: millions of years ago
Attribute_Measurement_Resolution: 1
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (blank)
Enumerated_Domain_Value_Definition: Age unknown
Attribute:
Attribute_Label: MAJOR_SUBTYPE
Attribute_Definition: Further subdivision of RK_TYPE
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Carbonate
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Conglomerate
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Felsic
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Intermediate
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Mafic
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Metasedimentary
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Mudstone
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sandstone
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: gneiss
Attribute:
Attribute_Label: MAJOR_LITHOLOGY
Attribute_Definition: Predominant lithology of RK_TYPE
Attribute_Definition_Source: OFR-99-0146
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: andesite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: basalt
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: black shale
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: conglomerate
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: diabase
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: felsite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: granitic gneiss
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: limestone
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: metagraywacke
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: rhyolite
Attribute:
Attribute_Label: MINOR1_RKTYPE
Attribute_Definition: Other rock type within named unit
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Extrusive
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Intrusive
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Metamorphic
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sedimentary
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (blank)
Attribute:
Attribute_Label: MINOR1_SUBTYPE
Attribute_Definition: Further subdivision of MINOR1_RKTYPE
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Amphibolite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Carbonate
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Conglomerate
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Intermediate
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Metasedimentary
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Mudstone
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sandstone
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (blank)
Attribute:
Attribute_Label: MINOR1_LITHOLOGY
Attribute_Definition: Predominant lithology of MINOR1_RKTYPE
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: amphibolite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: andesite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: arkose
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: conglomerate
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: diorite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: dolomite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: sandstone
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: siltstone
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: slate
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (blank)
Attribute:
Attribute_Label: MINOR2_RKTYPE
Attribute_Definition: Other rock type within named unit
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Extrusive
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Intrusive
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sedimentary
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (blank)
Attribute:
Attribute_Label: MINOR2_SUBTYPE
Attribute_Definition: Further subdivision of MINOR2_RKTYPE
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Felsic
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Mudstone
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sandstone
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (blank)
Attribute:
Attribute_Label: MINOR2_LITHOLOGY
Attribute_Definition: Predominant lithology of MINOR2_RKTYPE
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: granite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: rhyolite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: sandstone
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: siltstone
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (blank)
Attribute:
Attribute_Label: PROVINCE_ORIGIN
Attribute_Definition: Province of origin
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Interior platform
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Midcontinent rift
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Penokean
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Superior
Attribute:
Attribute_Label: SUBPROV/TERRANE
Attribute_Definition: Subprovince/terrane of origin
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Fold and thrust belt
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Wawa
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: central horst
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: flanking basin
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (blank)
Attribute:
Attribute_Label: PROVINCE_AGE
Attribute_Definition: Age of province of origin
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Early Proterozoic
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Late Archean
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Middle Proterozoic
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Paleozoic
Attribute:
Attribute_Label: REWORKING_PROV, REWORKING_SUBPRO and REWORKING_AGE
Attribute_Definition:
Province of reworking, Subprovince of reworking, and Age of reworking
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Penokean, Fold and thrust belt, Early Proterozoic
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (blank)
Attribute:
Attribute_Label: ENV_OF_FORMATION
Attribute_Definition: Environment of formation
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: andesite dome
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: dike
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: felsic dome
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: fluvial
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: fluvial, lacustrine
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: interflow conglomerate
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: lacustrine
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: marine
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: shallow marine
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: subaerial flood basalt
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: undetermined
Attribute:
Attribute_Label: TECTONIC_SETTING
Attribute_Definition: Tectonic setting of rock unit
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Post-rife thermal basin
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: continental rift basin
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: foreland basin
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: stable craton
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: undetermined
Attribute:
Attribute_Label: LITH_ASSEMBLAGE
Attribute_Definition: Lithologic assemblage
Attribute_Definition_Source: OFR_99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: black shale
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: carbonate, clastic sediments
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: coarse clastic sediments
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: coarse clastic sediments, metamorphosed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: felsic intrusive
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: felsic volcanics
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: gneiss complex
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: intermediate volcanics
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: mafic dikes
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: mafic volcanics
Detailed_Description:
Entity_Type:
Entity_Type_Label: ROADS, STREETS, & TRAILS.AAT
Entity_Type_Definition_Source: OFR_99-0149
Entity_Type_Definition: location of roads, streets, and trails
Attribute:
Attribute_Label: TYPE
Attribute_Definition: Type of road, street, or trail
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Primary Roads
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Secondary Roads
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Light Duty Roads
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Other Street
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Trails
Detailed_Description:
Entity_Type:
Entity_Type_Label: STRUCTURAL FEATURES.AAT
Entity_Type_Definition: Linear structural features
Entity_Type_Definition_Source: OFR-99-0149
Attribute:
Attribute_Label: TYPE
Attribute_Definition: Type of structural feature
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Limestone Mtn. Structural Zone
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: syncline
Detailed_Description:
Entity_Type:
Entity_Type_Label: ATTITUDE.PAT
Entity_Type_Definition: Orientation of Units
Entity_Type_Definition_Source: OFR-99-0149
Attribute:
Attribute_Label: TYPE
Attribute_Definition: Type of orientation
Attribute_Definition_Source: OFR-99-0146
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Strike & Dip of Bedding
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: strike & dip of foliation or cleavage
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: strike & dip of overturned bedding
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: strike of vertical bed
Attribute:
Attribute_Label: STRIKE
Attribute_Definition: Strike of bedding
Attribute_Definition_Source: OFR_99-0149
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 342
Attribute_Units_of_Measure: degrees
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: DIP
Attribute_Definition: Dip of bedding
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 5
Range_Domain_Maximum: 90
Attribute_Units_of_Measure: degrees
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: ANGLE
Attribute_Definition:
An rotation angle for use with ArcView which allows the user to correctly orient the symbols
Attribute_Definition_Source: OFR-99-0149
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 358
Attribute_Units_of_Measure: degrees
Attribute_Measurement_Resolution: 1
Overview_Description:
Entity_and_Attribute_Overview:
ARC/INFO .e00 files:

ATTITUDE - Orientation of bedding features (e.g., strike and dip)
BURIED - Features concealed by Jacobsville Sandstone
CGL - Interflow conglomerates
CHALC - Chalcocite bodies
COORD - A 15X15 minute geographic latitude/longitude locator grid
FISSURE - Fissure veins
GEOLOGY - Geologic units and faults
LAKES - Lakes
LODES - Native copper lodes
MAG - Distinct aeromagnetic trends
MINES - Mine shafts in the native copper district
OUTCROPS - Locations of outcrops
RIVERS - Rivers and streams
ROADS - Roads
STRUCTUR - Major structural features (other than faults)
WETLANDS - Wetlands, marshes, bogs, etc.
XSECTION - Cross section lines
Entity_and_Attribute_Detail_Citation: More information can be found in the README
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey Information Services
Contact_Address:
Address_Type: mailing address
Address: Box 25248, Denver Federal Center
City: Denver
State_or_Province: CO
Postal_Code: 80255-0286
Country: USA
Contact_Voice_Telephone: 1-888-ASK-USGS
Contact_Facsimile_Telephone: 1-303-202-4693
Distribution_Liability:
This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
This database, identified as "Geology and Mineral Deposits of the Keweenaw Peninsula and Vicinity, Michigan" has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data 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 Coverage
Format_Version_Number: ArcView 7.1.2
File_Decompression_Technique: unzip
Transfer_Size: 3
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Fees: none
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCE
Format_Version_Number: 7.1.2
File_Decompression_Technique: unzip
Transfer_Size: 3
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Fees: none
Metadata_Reference_Information:
Metadata_Date: 20160613
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Peter N Schweitzer
Contact_Organization: USGS Midwest Area
Contact_Position:
Collection manager, USGS Geoscience Data Clearinghouse, http://geo-nsdi.er.usgs.gov/
Contact_Address:
Address_Type: mailing address
Address:
Mail Stop 954
12201 Sunrise Valley Dr
City: Reston
State_or_Province: VA
Postal_Code: 20192-0002
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

This page is <https://geo-nsdi.er.usgs.gov/metadata/open-file/99-149/metadata.html>
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