Basement domain map of the conterminous U.S.A. and Alaska
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Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: Lund, K.
- Originator: Box, S.E.
- Originator: Holm-Denoma, C.S.
- Originator: San Juan, C.A.
- Originator: Blakely, R.J.
- Originator: Saltus, R.W.
- Originator: Anderson, E.D.
- Originator: DeWitt, E.H.
- Publication_Date: 2014
- Title: Basement domain map of the conterminous U.S.A. and Alaska
- Edition: 1.0
- Geospatial_Data_Presentation_Form: Vector Digital Data Set (Polygon)
- Series_Information:
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- Series_Name: Data Series
- Issue_Identification: DS-898
- Publication_Information:
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- Publication_Place: Denver, CO
- Publisher: U.S. Geological Survey
- Other_Citation_Details: Polygon layer name is "Basement_CONUS_AK"
- Online_Linkage: http://dx.doi.org/10.3133/ds898
- Description:
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- Abstract:
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The basement-domain map is a compilation of basement domains in the conterminous United States and Alaska designed to be used at 1:5,000,000-scale, particularly as a base layer for national-scale mineral resource assessments. Seventy-seven basement domains are represented as eighty-three polygons on the map. The domains are based on interpretations of basement composition, origin, and architecture and developed from a variety of sources. Analysis of previously published basement, lithotectonic, and terrane maps as well as models of planetary development were used to formulate the concept of basement and the methodology of defining domains that spanned the ages of Archean to the present but formed through different processes. The preliminary compilations for the study areas utilized these maps, national-scale gravity and aeromagnetic data, published and limited new age and isotopic data, limited new field investigations, and conventional geologic maps. Citation of the relevant source data for compilations and the source and types of original interpretation, as derived from different types of data, are provided in supporting descriptive text and tables.
The tectonic settings for crustal types represented in the basement domains are subdivided into constituent geologic environments and the types of primary metals endowments and deposits in them are documented. The compositions, architecture, and original metals endowments are potentially important to assessments of primary mineral deposits and to the residence and recycling of metals in the crust of the United States portion of the North American continent. The databases can be configured to demonstrate the construction of the United States through time, to identify specific types of crust, or to identify domains potentially containing metal endowments of specific genetic types or endowed with specific metals. The databases can also be configured to illustrate other purposes chosen by users.
- Purpose:
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This map of basement domains of the conterminous U.S. and Alaska is intended for use as a base layer for national-scale mineral resource assessments. The compositions, architecture, and original metals endowments are potentially important to assessments of primary mineral deposits and to the residence and recycling of metals in the crust of the U.S. parts of the North American continent. The database can be used to demonstrate the construction of the U.S. through time, to identify specific types of crust, and to identify domains potentially containing metal endowments of specific genetic types or endowed with specific metals.
- Supplemental_Information:
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Datasets in this geospatial database include "Bsmnt_CONUS_AK", the polygon feature class of basement domains, and "tbl2_Environs_Deposits", tabular data for additional geologic and deposit information. The tabular data can be joined to the polygon features using the field “Crust_Type”. The “Reference” field in both layers lists abbreviated citations; complete bibliographic citations are provided in the accompanying report, as well as a general overview of the work performed by study area.
Please note: attribute field names are truncated to 10-characters in the “shapefile” version of the geodatabase.
- Time_Period_of_Content:
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- Time_Period_Information:
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- Single_Date/Time:
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- Calendar_Date: 2014
- Currentness_Reference: publication date
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: None planned
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -169.175856663
- East_Bounding_Coordinate: -53.8303861254
- North_Bounding_Coordinate: 71.3708469789
- South_Bounding_Coordinate: 24.1423634468
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: American Geological Institute (AGI) Glossary of Geology
- Theme_Keyword: Basement domain
- Theme_Keyword: Continental crust
- Theme_Keyword: Craton
- Theme_Keyword: Lithotectonic
- Theme_Keyword: Metals endowment
- Theme_Keyword: Mineral belt
- Theme_Keyword: Mineral resource assessment
- Theme_Keyword: National-scale
- Theme_Keyword: Tectonic setting
- Theme_Keyword: Terrane
- Place:
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- Place_Keyword_Thesaurus: U.S. Board of Geographic Names (BGN) Geographic
- Place_Keyword: Conterminous U.S.A.
- Place_Keyword: Alaska
- Access_Constraints: None
- Use_Constraints:
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These data are intended for use at 1:5,000,000 scale. Data have been checked to ensure the accuracy. If any errors are detected, please notify the originating office. The U.S. Geological Survey strongly recommends that careful attention be paid to the metadata file associated with these data. Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from these data. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcGIS format, this metadata file may include some ArcGIS-specific terminology.
- Point_of_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Lund, Karen
- Contact_Organization: U.S. Geological Survey
- Contact_Position: Research Geologist
- Contact_Address:
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- Address_Type: mailing and physical address
- Address: Box 25046
- Address: Denver Federal Center
- Address: Mail Stop 973
- City: Lakewood
- State_or_Province: CO
- Postal_Code: 80401
- Country: USA
- Contact_Voice_Telephone: (303) 236-5600
- Contact_Facsimile_Telephone: (303) 236-3200
- Contact_Electronic_Mail_Address: klund@usgs.gov
- Data_Set_Credit:
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Spatial data supporting the Basement tectonic framework of the U.S. Project were developed by the U.S. Geological Survey Mineral Resources Program (MRP).
- Native_Data_Set_Environment:
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Environment as of Metadata Creation: Microsoft [Unknown] Version 6.2 (Build 9200) ; Esri ArcGIS 10.2.2 (Build 3552) Service Pack N/A (Build N/A)
- Data_Quality_Information:
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- Attribute_Accuracy:
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- Attribute_Accuracy_Report:
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The accuracy of attribute values varies by field. Values within descriptive fields represent new terminology developed by the report authors (for example, Crust_Type), or are modified from published geologic maps and reports (for example, Crust_Formation_Age) and therefore dependent on the accuracy of the source.
- Logical_Consistency_Report:
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Polygons in this dataset were checked for topological consistency (polygonal gaps and overlaps were corrected). Attribute fields containing dates were visually inspected for logical consistency (e.g. the age of crustal formation was greater than the age of crustal accretion).
- Completeness_Report: Dataset coverage includes the continental U.S. and Alaska.
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report:
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The positional accuracy of basement domain boundaries is dependent on the source, scale, and accuracy of the base materials. In general, positional accuracy is approximate, highly variable, and not accurate at scales larger than 1:5,000,000.
- Vertical_Positional_Accuracy:
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- Vertical_Positional_Accuracy_Report: Not applicable.
- Lineage:
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- Process_Step:
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- Process_Description:
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Polygons in this dataset represent interpretations of basement composition, origin, and architecture developed from a broad variety of sources. Analysis of previously published basement, lithotectonic, and terrane maps as well as models of planetary development were used to formulate the concept of basement and the methodology of defining domains that spanned the ages of Archean to Present but formed through different processes. The preliminary compilations for the study areas utilized these maps, national-scale gravity and aeromagnetic data, published and limited new age and isotopic data, limited new field investigations, and conventional geologic maps. Citations for sources of data used to construct the polygons are provided in attribute tables and the accompanying report.
- Process_Date: 2013
- Spatial_Data_Organization_Information:
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- Direct_Spatial_Reference_Method: Vector
- Point_and_Vector_Object_Information:
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- SDTS_Terms_Description:
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- SDTS_Point_and_Vector_Object_Type: G-polygon
- Point_and_Vector_Object_Count: 82
- Spatial_Reference_Information:
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- Horizontal_Coordinate_System_Definition:
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- Geographic:
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- Latitude_Resolution: 0.0197137099
- Longitude_Resolution: 0.0291450447
- Geographic_Coordinate_Units: Decimal seconds
- Geodetic_Model:
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- Horizontal_Datum_Name: D_WGS_1984
- Ellipsoid_Name: WGS_1984
- Semi-major_Axis: 6378137.0
- Denominator_of_Flattening_Ratio: 298.257223563
- Entity_and_Attribute_Information:
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- Detailed_Description:
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- Entity_Type:
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- Entity_Type_Label: Attribute Table
- Entity_Type_Definition:
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Table containing attribute information associated with the data set.
- Entity_Type_Definition_Source: Producer defined
- Attribute:
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- Attribute_Label: Study_Region_Name
- Attribute_Definition: Names assigned to regions studied in project
- Attribute_Definition_Source: Authors
- Attribute_Domain_Values:
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- Unrepresentable_Domain:
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Generally recognized geographic regions in the U.S.A. used to designate areas for study of basement characteristics. Designation of areas based both on available data and characteristics of underlying basement.
- Attribute:
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- Attribute_Label: Domain_Name
- Attribute_Definition: Name of basement domain
- Attribute_Definition_Source: Authors
- Attribute_Domain_Values:
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- Unrepresentable_Domain: Unique name for each identified basement domain.
- Attribute:
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- Attribute_Label: Alternate_Name
- Attribute_Definition: Alternate name for basement domain
- Attribute_Definition_Source: Authors
- Attribute_Domain_Values:
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- Unrepresentable_Domain:
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Alternate name used for an identified basement domain in some published sources.
- Attribute:
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- Attribute_Label: Crust_Type
- Attribute_Definition:
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Tectonic setting and type of the crust that formed the basement domain
- Attribute_Definition_Source: Authors
- Attribute_Domain_Values:
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- Unrepresentable_Domain:
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Generally accepted tectonic settings are identified as responsible for the types of crust. Descriptions for tectonic settings and types of crust are presented in text.
- Attribute:
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- Attribute_Label: Crust_Formation_Age
- Attribute_Definition:
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Age of formation of crust that formed the basement domain in millions of years (Ma) or billions of years (Ga).
- Attribute_Definition_Source: Authors
- Attribute_Domain_Values:
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- Unrepresentable_Domain:
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Ages are presented for domains where specific dates represent formation events. Age ranges are presented where dating demonstrates a span of formation events. Geologic ages are presented where the time of formation is more generalized.
- Attribute:
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- Attribute_Label: Accretion_Type
- Attribute_Definition: Tectonic setting and style of growth of continental basement
- Attribute_Definition_Source: Authors
- Attribute_Domain_Values:
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- Unrepresentable_Domain:
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Descriptions for the geometry and style of accretion for individual basement domains onto previously formed or amalgamated basement are presented in text.
- Attribute:
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- Attribute_Label: Accretion_Age
- Attribute_Definition:
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Age of addition of new basement to previously formed continental basement in millions of years (Ma) or billions of years (Ga).
- Attribute_Definition_Source: Authors
- Attribute_Domain_Values:
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- Unrepresentable_Domain:
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Ages are presented for crustal growth where single dates represent specific events. Age ranges are presented where dating demonstrates a span of crustal growth events. Geologic ages are presented where the time of crustal growth is more generalized.
- Attribute:
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- Attribute_Label: References_
- Attribute_Definition: Abbreviated references to supporting published information
- Attribute_Definition_Source: Authors
- Attribute_Domain_Values:
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- Unrepresentable_Domain:
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Abbreviated citation of reference material used to support interpretion of basement domains. Full citations are provided in the accompanying report.
- Attribute:
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- Attribute_Label: Notes
- Attribute_Definition:
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Ages are presented for crustal growth where single dates represent specific events. Age ranges are presented where dating demonstrates a span of crustal growth events. Geologic ages are presented where the time of crustal growth is more generalized.
- Attribute_Definition_Source: Authors
- Attribute_Domain_Values:
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- Unrepresentable_Domain:
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Information presented on relations between domains, questions about unknown aspects of basement origin or development, and vergence of structures.
- Attribute:
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- Attribute_Label: Shape_Length
- Attribute_Definition: Length of feature in internal units.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
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- Range_Domain:
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- Range_Domain_Minimum: 3.69266066502714
- Range_Domain_Maximum: 91.8042965588683
- Attribute:
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- Attribute_Label: Shape_Area
- Attribute_Definition: Area of feature in internal units squared.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
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- Range_Domain:
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- Range_Domain_Minimum: 0.21600782940954
- Range_Domain_Maximum: 131.073760220578
- Overview_Description:
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- Entity_and_Attribute_Overview:
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The tabular data can be joined to the polygon features using the field “Crust_Type”.
- Entity_and_Attribute_Detail_Citation:
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Datasets in this geospatial database include "Bsmnt_CONUS_AK", the polygon feature class of basement domains, and "tbl2_Environs_Deposits", tabular data for additional geologic and deposit information.
Attributes for the polygon feature class “Bsmnt_CONUS_AK” are described under the “Attribute” section of this metadata. The tabular data "tbl2_Environs_Deposits” contains the following attribute fields:
Crust_Type: Tectonic setting for the type of crust in each basement domain. Generally accepted tectonic settings are identified as the origin for each type of crust. Descriptions for tectonic settings and types of crust are presented in text.
Geologic_Environments: Geologic environment represented in each identified tectonic setting. Generally accepted geologic environments that form in the tectonic settings that formed basement in each domain. Descriptions for geologic environments are presented in text.
Primary_Metals_Deposits: Metal enrichments that may form in an identified geologic environment. Types of metals accumulations that form in specific geologic environments during original construction of crust and that may have resulted in enrichments of suites of metals or in ore deposits of specific types. Descriptions of the settings and genesis of original metal accumulations in each geologic environment are presented in text.
References: Abbreviated citations; complete bibliographic citations are provided in the accompanying report.
- Distribution_Information:
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- Distributor:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: U.S. Geological Survey
- Contact_Position: USGS Information Services
- Contact_Address:
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- Address_Type: mailing address
- Address: Box 25286, DFC
- City: Denver
- State_or_Province: CO
- Postal_Code: 80225
- Country: USA
- Contact_Voice_Telephone: 1-888-ASK-USGS
- Contact_Electronic_Mail_Address: ask@usgs.gov
- Distribution_Liability:
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Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
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 must be secured from the copyright owner.
This database, identified as DS 898, has been approved for release and publication by the U.S. Geological Survey (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 U.S. Government may be held liable for any damages resulting from its authorized or unauthorized use.
Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), 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 USGS shall not be held liable for improper or incorrect use of the data described and/or contained herein.
- Standard_Order_Process:
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- Digital_Form:
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- Digital_Transfer_Information:
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- Format_Name: Vector Digital Data Set (Polygon)
- Format_Version_Number: 10.1
- File_Decompression_Technique: Unzip
- Digital_Transfer_Option:
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- Online_Option:
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- Computer_Contact_Information:
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- Network_Address:
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- Network_Resource_Name: http://dx.doi.org/10.3133/ds898
- Fees: None
- Metadata_Reference_Information:
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- Metadata_Date: 20150211
- Metadata_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Carma San Juan
- Contact_Organization: U.S. Geological Survey
- Contact_Position: Physical Scientist
- Contact_Address:
-
- Address_Type: mailing address
- Address: Box 25046, DFC
- City: Denver
- State_or_Province: CO
- Postal_Code: 80225
- Country: USA
- Contact_Voice_Telephone: 303-236-2450
- Contact_Facsimile_Telephone: (303) 236-3200
- Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
- Metadata_Standard_Version: FGDC-STD-001-1998
- Metadata_Extensions:
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- Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Generated by mp version 2.9.28 on Wed Feb 11 11:46:33 2015