U-Pb Isotopic Data and Ages of Detrital Zircon from Selected Rocks from northern Yukon, Canada

Identification_Information:

Citation:

Citation_Information:

Originator: Jones, James V. III (ORCID: 0000-0002-6602-5935)
Originator: Dumoulin, Julie A. (ORCID: 0000-0003-1754-1287)
Originator: Lane, Larry S. (ORCID: 0000-0002-7717-8507)
Originator: Poulton, Terry (ORCID:0000-0002-0683-5987)
Originator: O'Sullivan, Paul (ORCID: 0000-0002-7247-5107)
Publication_Date: 20230123
Title:

Geospatial_Data_Presentation_Form: tabular digital data
Series_Information:

Series_Name:

U-Pb Isotopic Data and Ages of Detrital Zircon from Selected Rocks from northern Yukon, Canada

Issue_Identification: ver 1.1, June 2023

Publication_Information:

Publication_Place: Anchorage, Alaska
Publisher: U.S. Geological Survey, Alaska Science Center

Other_Citation_Details:

Suggested Citation: Jones III, J.V., Dumoulin, J.A., Lane, L.S., Poulton, T., O'Sullivan, P., 2023, U-Pb isotopic data and ages of detrital zircon from selected rocks from northern Yukon, Canada (ver 1.1, June 2023): U.S. Geological Survey Data Release, https://doi.org/10.5066/P9RRTBAO

Online_Linkage: https://doi.org/10.5066/P9RRTBAO
Larger_Work_Citation:

Citation_Information:

Originator: U.S. Geological Survey, Alaska Science Center
Publication_Date: 2020
Title:

Geological framework, metallogeny, and critical mineral potential of the broader Yukon-Tanana upland, Alaska

Geospatial_Data_Presentation_Form: website
Series_Information:

Series_Name: Alaska Science Portal
Issue_Identification: 436

Publication_Information:

Publication_Place: Anchorage, Alaska
Publisher: U.S. Geological Survey, Alaska Science Center

Other_Citation_Details:

This is a link to the broader USGS Alaska Science Center research project supported by these data. Users will find a description of the research project and links to associated reports, publications, and data products.

Online_Linkage: https://alaska.usgs.gov/portal/project.php?project_id=436

Description:

Abstract:

This data set contains U-Pb isotopic data and associated ages of detrital zircon from sedimentary and metasedimentary rocks collected in northern Yukon, Canada. The samples were originally collected as part of geological mapping and research conducted by the Geological Survey of Canada. They were recovered from archived collections and sent to the U.S. Geological Survey for analysis of detrital zircon using U-Pb geochronology methods. Detrital zircon grains were separated and analyzed by GeoSep Services (GSS) in 2015 using laser-ablation-inductively-coupled-plasma-mass spectrometry (LA-ICP-MS) techniques.

Purpose:

U-Pb isotopic ages of detrital zircon grains aid in the interpretation of sediment sources, and pathways during original deposition of sedimentary rocks. The youngest detrital zircon ages in any single sample also provides information about the maximum possible depositional age of the sediment and, therefore, the geologic unit that contains it. Comparison of detrital zircon age populations between samples provides a critical test of local to regional correlations of geologic units and aids in the reconstruction of geologic histories of large regions. In this study, the data were used to compare age and provenance patterns in Jurassic strata from northern Yukon, Canada, with similar-aged units in central and eastern Alaska. These data will be used in support of multiple geological maps, reports, and papers that describe the geological framework of these regions.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2023

Currentness_Reference: publication date

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -137.77
East_Bounding_Coordinate: -136.17
North_Bounding_Coordinate: 68.42
South_Bounding_Coordinate: 67.43

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:ASC512

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation

Theme:

Theme_Keyword_Thesaurus: NASA GCMD Earth Science Keyword Thesaurus
Theme_Keyword: Earth science

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: Geology
Theme_Keyword: Geochronology
Theme_Keyword: Igneous rocks
Theme_Keyword: Sedimentary rocks
Theme_Keyword: Uranium-lead analysis

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: U-Pb
Theme_Keyword: Detrital zircon

Place:

Place_Keyword_Thesaurus: USGS Geographic Names Information System (GNIS)
Place_Keyword: Cache Creek
Place_Keyword: Porcupine River

Place:

Place_Keyword_Thesaurus: Canadian Geographical Names Database (CGNDB)
Place_Keyword: Cache Creek
Place_Keyword: Salmon Cache Canyon
Place_Keyword: Yukon

Access_Constraints: None
Use_Constraints:

It is requested that the authors and the USGS Alaska Science Center be cited for any subsequent publications that reference this dataset.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey, Alaska Science Center

Contact_Address:

Address_Type: Mailing and Physical
Address: 4210 University Drive
City: Anchorage
State_or_Province: Alaska
Postal_Code: 99508
Country: USA

Contact_Voice_Telephone: 907-786-7000
Contact_Electronic_Mail_Address: ascweb@usgs.gov

Cross_Reference:

Citation_Information:

Originator: Jones, J.V., III (ORCID: 0000-0002-6602-5935)
Originator: Todd, E. (ORCID: 0000-0002-4871-9730)
Originator: Box, S.E. (ORCID: 0000-0002-5268-8375)
Originator: Haeussler, P.J. (ORCID: 0000-0002-1503-6247)
Originator: Holm-Denoma, C.S. (ORCID: 0000-0003-3229-5440)
Originator: Karl, S.M. (ORCID: 0000-0003-2038-5342)
Originator: Graham, G.E. (ORCID: 0000-0003-0657-0365)
Originator: Bradley, D.C. (ORCID: 0000-0001-9116-5289)
Originator: Kylander-Clark, A.R.C.
Originator: Friedman, R.M.
Originator: Layer, P.W.
Publication_Date: 2021
Title:

Cretaceous to Oligocene magmatic and tectonic evolution of the western Alaska Range: Insights from U-Pb and 40Ar/39Ar geochronology

Geospatial_Data_Presentation_Form: journal article
Series_Information:

Series_Name: Geosphere
Issue_Identification: 17(1):118-153

Publication_Information:

Publication_Place: online
Publisher: GeoScienceWorld

Other_Citation_Details:

Jones, J.V., III, Todd, E., Box, S.E., Haeussler, P.J., Holm-Denoma, C.S., Karl, S.M., Graham, G.E., Bradley, D.C., Kylander-Clark, A.R.C., Friedman, R.M., and Layer, P.W. 2021. Cretaceous to Oligocene magmatic and tectonic evolution of the western Alaska Range: Insights from U-Pb and 40Ar/39Ar geochronology. Geosphere 17(1):118-153 doi:10.1130/GES02303.1

Online_Linkage: https://doi.org/10.1130/GES02303.1

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The zircon samples were run with zircon reference materials. The reference materials were analyzed until fractionation was stable and the variance in the measured 206Pb/238U and 207Pb/206Pb ratios was at or near 1 percent. Reference materials were subsequently analyzed together with unknowns to monitor fractionation throughout the analytical session. All measured isotopic ratios are reported with associated analytical uncertainty.

Logical_Consistency_Report:

Attribute values fall within expected ranges. Users should note that the data tables are released in Comma Separated Values format (.csv) which present the data with the correct number of significant figures; however, some software programs may alter the values and truncate trailing zeroes.

Completeness_Report:

Analyses that produced no data or incomplete data that were insufficient for calculating geologic ages were omitted.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

All collected samples have horizontal positions determined from station locations recorded on 1:50,000 scale topographic maps. The positional accuracy range is assumed to be approximately 20 meters or less.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Jaffey, A.H.
Originator: Flynn, K.F.
Originator: Glendenin, L.E.
Originator: Bentley, W.C.
Originator: Essling, A.M.
Publication_Date: 1971
Title:

Precision measurements of half-lives and specific activities of 235U and 238U

Geospatial_Data_Presentation_Form: journal article
Series_Information:

Series_Name: Physical Review C
Issue_Identification: 4(5):889-906

Publication_Information:

Publication_Place: online
Publisher: American Physical Society

Other_Citation_Details:

Jaffey, A.H., Flynn, K.F., Glendenin, L.E., Bentley, W.C., and Essling, A.M. 1971. Precision measurements of half-lives and specific activities of 235U and 238U. Physical Reviews C 4(5):889-906 doi:10.1103/PhysRevC.4.1889

Online_Linkage: https://doi.org/10.1103/PhysRevC.4.1889

Type_of_Source_Media: publication
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1971

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Jaffey et al., 1971
Source_Contribution: Determination of precision half-life values for 235U and 238U

Source_Information:

Source_Citation:

Citation_Information:

Originator: Ludwig, K.R.
Publication_Date: 2003
Title:

User's Manual for Isoplot 3.00: A Geochronological Toolkit for Microsoft Excel

Geospatial_Data_Presentation_Form: document
Series_Information:

Series_Name: Berkeley Geochronology Center Special Publications
Issue_Identification: Special Publication no. 4

Publication_Information:

Publication_Place: online
Publisher: Berkeley Geochronology Center

Other_Citation_Details:

Ludwig, K.R. 2003. User's Manual for Isoplot 3.00: A Geochronological Toolkit for Microsoft Excel, Berkeley Geochronology Center, Special Publication no. 4

Online_Linkage: https://www.bgc.org/isoplot

Type_of_Source_Media: document
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2003

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Ludwig, 2003
Source_Contribution: Software instructions for digital geochronological tools

Source_Information:

Source_Citation:

Citation_Information:

Originator: Jones, J.V., III
Originator: Todd, E.
Originator: Box, S.E.
Originator: Haeussler, P.J.
Originator: Holm-Denoma, C.S.
Originator: Karl, S.M.
Originator: Graham, G.E.
Originator: Bradley, D.C.
Originator: Kylander-Clark, A.R.C.
Originator: Friedman, R.M.
Originator: Layer, P.W.
Publication_Date: 2021
Title:

Cretaceous to Oligocene magmatic and tectonic evolution of the western Alaska Range: Insights from U-Pb and 40Ar/39Ar geochronology

Geospatial_Data_Presentation_Form: journal article
Series_Information:

Series_Name: Geosphere
Issue_Identification: 17(1):118-153

Publication_Information:

Publication_Place: online
Publisher: GeoScienceWorld

Other_Citation_Details:

Online_Linkage: https://doi.org/10.1130/GES02303.1

Type_of_Source_Media: publication
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2020

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Jones et al., 2021
Source_Contribution:

Detailed interpretations of these data and a discussion of the results of the study.

Source_Information:

Source_Citation:

Citation_Information:

Originator: GeoSep Services, LLC
Publication_Date: 2015
Title:

U-Pb Zircon LA-ICP-MS, Apatite to Zircon, Inc. and GeoSep Services

Geospatial_Data_Presentation_Form: pdf data file
Other_Citation_Details:

PDF data file included with this Data Release package, https://doi.org/10.5066/P9RRTBAO

Online_Linkage: Supplemental_Info_Analytical_Methods_GSS.pdf

Type_of_Source_Media: Digital and/or Hardcopy
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2015

Source_Currentness_Reference: See Supplemental Info

Source_Citation_Abbreviation: Supplemental PDF
Source_Contribution:

Outlines process steps and references from two successive laboratories applicable to the analyses in this dataset.

Process_Step:

Process_Description:

For the detrital zircon samples, mineral separation procedures for zircons used lithium polytungstate and a centrifuge. Zircon grains were mounted in epoxy wafers and then ground down to expose internal grain surfaces, and then polished. Isotopic analyses were performed with either a new Wave UP-213 or New Wave YAG 213 laser ablation system in line with a Finnigan Element2 magnetic sector, inductively coupled plasma, mass spectrometer (ICP-MS) at Washington State University Geoanalytical Laboratory in Pullman, Washington. Detailed analytical procedures are described in the accompanying document, "Supplemental_Info_Analytical_Methods_GSS.pdf" included with this data package.

Process_Date: 2015

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Point

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.0001
Longitude_Resolution: 0.0001
Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983 (NAD 83)
Ellipsoid_Name: Geodetic Reference System 1980
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: geology_dataDictionary_northernYukon_Jones.csv
Entity_Type_Definition:

Table describing all fields in each table included in this data package. Includes field names, a brief description of each field, and the data units, if applicable. This table contains 35 records and is presented in comma separated value (.csv) format.

Entity_Type_Definition_Source: Author defined

Attribute:

Attribute_Label: Table
Attribute_Definition: Name of the data table the field is found in.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: geology_detritalZircon_northernYukon_Jones.csv
Enumerated_Domain_Value_Definition: Filename of CSV data table
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: geology_sampleSummary_northernYukon_Jones.csv
Enumerated_Domain_Value_Definition: Filename of CSV data table
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: Field
Attribute_Definition: Field name found in data table listed in field 'Table'.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Attributes in this field are single words or concatenated abbreviations that describe the contents of the field.

Attribute:

Attribute_Label: Description
Attribute_Definition: Brief description of the contents of 'Field'.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Attributes in this field are brief descriptions of the contents of 'Field'.

Attribute:

Attribute_Label: Units
Attribute_Definition: The unit of measurement for applicable data fields.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: n/a
Enumerated_Domain_Value_Definition: n/a = units are not applicable
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: %
Enumerated_Domain_Value_Definition: % = percent
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Ma
Enumerated_Domain_Value_Definition: Ma = Mega-annum, or millions of years before present.
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: ppm
Enumerated_Domain_Value_Definition: ppm = parts per million
Enumerated_Domain_Value_Definition_Source: Author defined

Detailed_Description:

Entity_Type:

Entity_Type_Label: geology_detritalZircon_northernYukon_Jones.csv
Entity_Type_Definition:

Table with more specific sample analysis information, including isotope concentration and ratio data, and geochronology analysis summary data. This table contains 491 records and is presented in comma separated value (.csv) format.

Entity_Type_Definition_Source: Author defined

Attribute:

Attribute_Label: SampleID
Attribute_Definition: Sample number as collected in the field
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Sample identifier; these labels generally consist of an alphanumeric or numeric sequence that is unique to that sample. Sample identifiers link to field 'SampleID' in table geology_sampleSummary_northernYukon_Jones.csv.

Attribute:

Attribute_Label: Analysis_Lab
Attribute_Definition: Laboratory where analysis was done
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: GSS
Enumerated_Domain_Value_Definition: GSS = GeoSep Services
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: Mineral
Attribute_Definition: Mineral or material analyzed.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: DZ
Enumerated_Domain_Value_Definition: DZ = detrital zircon
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: AnalysisID
Attribute_Definition: Laboratory assigned ID number of individual analysis spot
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Internal ID number of individual analysis location, generally the sample name, followed by a dash and a specific laboratory identifier followed by an underscore and a unique spot ID number for each individual grain.

Attribute:

Attribute_Label: U_Conc_ppm
Attribute_Definition: Concentration of uranium (U), in parts per million (ppm).
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 7
Range_Domain_Maximum: 1726
Attribute_Units_of_Measure: ppm (parts per million)

Attribute:

Attribute_Label: U_Th_Ratio
Attribute_Definition:

Ratio of the concentration of uranium (U) divided by the concentration of thorium (Th).

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.32
Range_Domain_Maximum: 779.29

Attribute:

Attribute_Label: 207Pb_206Pb_Ratio
Attribute_Definition: Total ratio of 207Pb to 206Pb.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0482
Range_Domain_Maximum: 0.3312

Attribute:

Attribute_Label: 207Pb_206Pb_Ratio_Unc_1sig_perc
Attribute_Definition:

Percent uncertainty (1-sigma) for the total ratio of 207Pb to 206Pb.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.83
Range_Domain_Maximum: 53.77

Attribute:

Attribute_Label: 207Pb_235U_Ratio
Attribute_Definition: Total ratio of 207Pb to 235U.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.1277
Range_Domain_Maximum: 33.8103

Attribute:

Attribute_Label: 207Pb_235U_Ratio_Unc_1sig_perc
Attribute_Definition:

Percent uncertainty (1-sigma) for the total ratio of 207Pb to 235U.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.81
Range_Domain_Maximum: 55.06

Attribute:

Attribute_Label: 206Pb_238U_Ratio
Attribute_Definition: Total ratio of 206Pb to 238U.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0192
Range_Domain_Maximum: 0.7402

Attribute:

Attribute_Label: 206Pb_238U_Ratio_Unc_1sig_perc
Attribute_Definition:

Percent uncertainty (1-sigma) for the total ratio of 206Pb to 238U.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.69
Range_Domain_Maximum: 38.38

Attribute:

Attribute_Label: Error_Correlation
Attribute_Definition: Error correlation of the 207Pb/235U and 206Pb/238U ratios.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.07
Range_Domain_Maximum: 0.66

Attribute:

Attribute_Label: 206Pb_238U_Age
Attribute_Definition:

Age in million years (Ma) calculated from the ratio of 206Pb to 238U.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 122.7
Range_Domain_Maximum: 3571.4
Attribute_Units_of_Measure: Ma (Mega-annum)

Attribute:

Attribute_Label: 206Pb_238U_Age_Unc_2sig_abs
Attribute_Definition:

Uncertainty (2-sigma) in millions of years (Ma) for the age calculated from the ratio of206Pb to 238U.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 2.7
Range_Domain_Maximum: 820.5
Attribute_Units_of_Measure: Ma (Mega-annum)

Attribute:

Attribute_Label: 207Pb_235U_Age
Attribute_Definition:

Age in millions of years (Ma) calculated from the ratio of 207Pb to 235U.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 122.1
Range_Domain_Maximum: 3604.5
Attribute_Units_of_Measure: Ma (Mega-annum)

Attribute:

Attribute_Label: 207Pb_235U_Age_Unc_2sig_abs
Attribute_Definition:

Uncertainty (2-sigma) in millions of years (Ma) for the age calculated from the ratio of 207Pb to 235U.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 3.5
Range_Domain_Maximum: 863.7
Attribute_Units_of_Measure: Ma (Mega-annum)

Attribute:

Attribute_Label: 207Pb_206Pb_Age
Attribute_Definition:

Age in million years (Ma) calculated from the ratio of 207Pb to 206Pb.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 109.6
Range_Domain_Maximum: 3622.9
Attribute_Units_of_Measure: Ma (Mega-annum)

Attribute:

Attribute_Label: 207Pb_206Pb_Age_Unc_2sig_abs
Attribute_Definition:

Uncertainty (2-sigma) in millions of years (Ma) for the age calculated from the ratio of 207Pb to 206Pb.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 28.0
Range_Domain_Maximum: 2360.1
Attribute_Units_of_Measure: Ma (Mega-annum)

Attribute:

Attribute_Label: Discordance_perc
Attribute_Definition: Percent discordance of 206Pb/238U age versus 207Pb/206Pb age.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -16.1
Range_Domain_Maximum: 32.5
Attribute_Units_of_Measure: % (percent)

Detailed_Description:

Entity_Type:

Entity_Type_Label: geology_sampleSummary_northernYukon_Jones.csv
Entity_Type_Definition:

Table with sample information, including location, rock descriptions, and geochronology analysis summary data. This table contains 88 records and is presented in comma separated value (.csv) format.

Entity_Type_Definition_Source: Author defined

Attribute:

Attribute_Label: SampleID
Attribute_Definition:

Sample number as collected in the field; internal USGS identifier.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain:

This field contains alphanumeric or numeric identifiers assigned by the collector.. Sample identifiers link to field 'SampleID' in table geology_detritalZircon_northernYukon_Jones.csv.

Attribute:

Attribute_Label: Collector_agency
Attribute_Definition: Agency responsible for collecting the sample in the field.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: GSC
Enumerated_Domain_Value_Definition: GSC = Geological Society of Canada
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: Geologic_unit_general
Attribute_Definition:

General geologic unit from which the field sample was collected.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Bug Creek Group
Enumerated_Domain_Value_Definition:

General geologic unit as noted in Geological Society of Canada reference map 1518A.

Enumerated_Domain_Value_Definition_Source: https://emrlibrary.gov.yk.ca/gsc/Geology%20Maps/1518A.pdf

Attribute:

Attribute_Label: Geologic_unit_detail
Attribute_Definition:

Detailed geologic unit from which the field sample was collected

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Kingak Formation
Enumerated_Domain_Value_Definition:

More detailed geologic subunit as noted in Geological Society of Canada reference map 1518A

Enumerated_Domain_Value_Definition_Source: https://emrlibrary.gov.yk.ca/gsc/Geology%20Maps/1518A.pdf

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Almstrom Creek Formation, Unit 2
Enumerated_Domain_Value_Definition:

More detailed geologic subunit as noted in Geological Society of Canada reference map 1516A and Bulletin 325.

Enumerated_Domain_Value_Definition_Source:

Norris, D.K., 1981a. Geology, Blow River and Davidson Mountains, Yukon Territory and District of Mackenzie, Geological Survey of Canada Map 1516A, 1 sheet, 1:250,000 scale, https://emrlibrary.gov.yk.ca/gsc/bulletins/325.pdf

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Almstrom Creek Formation
Enumerated_Domain_Value_Definition:

More detailed geologic subunit as noted in Geological Society of Canada reference map 1516A and Bulletin 325.

Enumerated_Domain_Value_Definition_Source:

Norris, D.K., 1981a. Geology, Old Crow, Yukon Territory, Geological Survey of Canada Map 1516A, 1 sheet, 1:250,000 scale, https://emrlibrary.gov.yk.ca/gsc/bulletins/325.pdf

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Richardson Mountains Formation
Enumerated_Domain_Value_Definition:

More detailed geologic subunit as noted in Geological Society of Canada reference map 1519A and Bulletin 358.

Enumerated_Domain_Value_Definition_Source:

Norris, D.K., 1981c. Geology, Bell River, Yukon Territory and District of Mackenzie, Geological Survey of Canada Map 1519A, 1 sheet, 1:250,000 scale,

Attribute:

Attribute_Label: Latitude
Attribute_Definition: Latitude of sample field location in NAD83
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 67.4387
Range_Domain_Maximum: 68.4190
Attribute_Units_of_Measure: decimal degrees

Attribute:

Attribute_Label: Longitude
Attribute_Definition: Latitude of sample field location in NAD83
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -137.7750
Range_Domain_Maximum: -136.1750
Attribute_Units_of_Measure: decimal degrees

Attribute:

Attribute_Label: Rock_type
Attribute_Definition: Sample rock type
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: basal sandstone
Enumerated_Domain_Value_Definition:

Lithographic classification designated specifically as a basal sandstone.

Enumerated_Domain_Value_Definition_Source: Author defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: sandstone
Enumerated_Domain_Value_Definition:

Lithographic classification generally designated as a sandstone.

Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: Locality
Attribute_Definition: Geographic locality from which the field sample was collected
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Values here are from northern Yukon named places 'Bonnett Lake', 'Cache Creek', and 'Salmon Creek Canyon, Porcupine River'.

Attribute:

Attribute_Label: Depositional_age_period
Attribute_Definition:

Geologic age (Period) of the geologic unit containing the field sample

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Jurassic
Enumerated_Domain_Value_Definition:

General classification name of geologic age sample was attributed to.

Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: Depositional_age_stage
Attribute_Definition:

Geologic age (Stage) of the geologic unit containing the field sample

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Hettangian
Enumerated_Domain_Value_Definition: Earliest stage of deposition named within the Jurassic Period.
Enumerated_Domain_Value_Definition_Source: https://doi.org/10.1016/B978-0-444-59425-9.00026-3.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Pleinsbachian
Enumerated_Domain_Value_Definition:

Early stage of deposition named within the Jurassic Period, immediately following Sinemurian.

Enumerated_Domain_Value_Definition_Source: https://doi.org/10.1016/B978-0-444-59425-9.00026-3.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Sinemurian
Enumerated_Domain_Value_Definition:

Early stage of deposition named within the Jurassic Period, immediately following Hettangian.

Enumerated_Domain_Value_Definition_Source: https://doi.org/10.1016/B978-0-444-59425-9.00026-3.

Attribute:

Attribute_Label: Yukon_NTS
Attribute_Definition:

Yukon National Topographic System 1:250,000 quadrangle containing the sample location

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Values are represented by a three digit number followed by a letter designation, a hyphen, and a two digit number that references the Canadian National Topographic system records.

Attribute:

Attribute_Label: Locality_reference
Attribute_Definition:

Published resources containing additional information about the sample

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Values in this table are names and numbers of maps and/or bulletins published by the Geological Society of Canada. Blank value denotes no locality reference published for that sample.

Attribute:

Attribute_Label: Mineral
Attribute_Definition: Mineral that was used for analysis.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: DZ
Enumerated_Domain_Value_Definition: DZ = detrital zircon
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: Analysis_Lab
Attribute_Definition: Laboratory or contractor where data were collected
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: GSS
Enumerated_Domain_Value_Definition: GSS = GeoSep Services, LLC
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: Analysis_method
Attribute_Definition: Method of geochronologic analysis
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: LAICPMS
Enumerated_Domain_Value_Definition:

Acronym for 'Laser Ablation Inductively Coupled Plasma Mass Spectrometry' procedures.

Enumerated_Domain_Value_Definition_Source: Author defined

U-Pb Isotopic Data and Ages of Detrital Zircon from Selected Rocks from northern Yukon, Canada

Metadata: