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Mineral Resources On-Line Spatial Data

Mineral Resources > Online Spatial Data

National Geochronological Database

Metadata also available as - [Questions & Answers] - [Parseable text] - [XML]

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Sloan, Jan
Originator: Henry, Christopher D.
Originator: Hopkins, Melanie
Originator: Ludington, Stephen D.
Originator: Zartman, Robert E.
Originator: Bush, Charles A.
Originator: Abston, Carl
Title: National Geochronological Database
Publication_Date: 2003
Geospatial_Data_Presentation_Form: relational database
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 03-236
Publication_Information:
Publication_Place: Menlo Park, California
Publisher: U.S. Geological Survey
Online_Linkage: https://mrdata.usgs.gov/geochron/
Description:
Abstract:
Radiometric ages of geological materials by K-Ar, Rb-Sr, Sm-Nd, fission track, and U-Th-Pb dating methods. A revision of DDS-14 correcting locations and providing the data in more convenient formats.
Purpose:
This database is a minor revision of DDS-14, with some corrections.
Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 1995
Single_Date/Time:
Calendar_Date: 2003
Currentness_Reference:
Publication dates of the initial database (DDS-14) and the revision (OFR 2003-236).
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -179.119444
East_Bounding_Coordinate: -67.021389
North_Bounding_Coordinate: 71
South_Bounding_Coordinate: 26.5625
Access_Constraints: none
Use_Constraints: none
Keywords:
Theme:
Theme_Keyword_Thesaurus: General glossary for mineral resources spatial data
Theme_Keyword: comma-delimited text
Theme_Keyword: KML
Theme_Keyword: shapefile
Theme_Keyword: tab-delimited text
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: geochronology
Theme_Keyword: geologic history
Theme_Keyword: geospatial datasets
Theme_Keyword: potassium-argon analysis
Theme_Keyword: rubidium-strontium analysis
Theme_Keyword: uranium-lead analysis
Theme_Keyword: uranium-thorium analysis
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Place:
Place_Keyword_Thesaurus: Common geographic areas thesaurus
Place_Keyword: fUS01 = Alabama
Place_Keyword: fUS02 = Alaska
Place_Keyword: fUS04 = Arizona
Place_Keyword: fUS05 = Arkansas
Place_Keyword: fUS06 = California
Place_Keyword: fUS08 = Colorado
Place_Keyword: fUS09 = Connecticut
Place_Keyword: fUS10 = Delaware
Place_Keyword: fUS12 = Florida
Place_Keyword: fUS13 = Georgia
Place_Keyword: fUS16 = Idaho
Place_Keyword: fUS17 = Illinois
Place_Keyword: fUS18 = Indiana
Place_Keyword: fUS19 = Iowa
Place_Keyword: fUS20 = Kansas
Place_Keyword: fUS21 = Kentucky
Place_Keyword: fUS22 = Louisiana
Place_Keyword: fUS23 = Maine
Place_Keyword: fUS24 = Maryland
Place_Keyword: fUS25 = Massachusetts
Place_Keyword: fUS26 = Michigan
Place_Keyword: fUS27 = Minnesota
Place_Keyword: fUS28 = Mississippi
Place_Keyword: fUS29 = Missouri
Place_Keyword: fUS30 = Montana
Place_Keyword: fUS31 = Nebraska
Place_Keyword: fUS32 = Nevada
Place_Keyword: fUS33 = New Hampshire
Place_Keyword: fUS34 = New Jersey
Place_Keyword: fUS35 = New Mexico
Place_Keyword: fUS36 = New York
Place_Keyword: fUS37 = North Carolina
Place_Keyword: fUS38 = North Dakota
Place_Keyword: fUS39 = Ohio
Place_Keyword: fUS40 = Oklahoma
Place_Keyword: fUS41 = Oregon
Place_Keyword: fUS42 = Pennsylvania
Place_Keyword: fUS44 = Rhode Island
Place_Keyword: fUS45 = South Carolina
Place_Keyword: fUS46 = South Dakota
Place_Keyword: fUS47 = Tennessee
Place_Keyword: fUS48 = Texas
Place_Keyword: fUS49 = Utah
Place_Keyword: fUS50 = Vermont
Place_Keyword: fUS51 = Virginia
Place_Keyword: fUS53 = Washington
Place_Keyword: fUS54 = West Virginia
Place_Keyword: fUS55 = Wisconsin
Place_Keyword: fUS56 = Wyoming
Browse_Graphic:
Browse_Graphic_File_Name: https://mrdata.usgs.gov/geochron/ofr-2003-236.png
Browse_Graphic_File_Description:
Sample locations in the conterminous United States, (768 x 512 pixels)
Browse_Graphic_File_Type: PNG
Data_Quality_Information:
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Zartman, Robert E.
Originator: Bush, Charles A.
Originator: Abston, C. C.
Publication_Date: 1995
Title: National geochronological and natural radioelement data bases
Series_Information:
Series_Name: Data Series
Issue_Identification: 14
Publication_Information:
Publisher: U.S. Geological Survey
Publication_Place: Denver, Colorado
Type_of_Source_Media: digital files on CD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1995
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: DDS-14
Source_Contribution:
Original database used by compilers of OFR-2003-236; corrections to some of the data are described at http://pubs.usgs.gov/of/2003/0236/
Process_Step:
Process_Description:
Copied information from OFR 2003-236, added documentation, reformatted, and in some cases eliminated duplication, eliminated explicit uninformative values (for example "Unk" in many fields). Created specialized interfaces and report formats as well as web services and download packages.
Process_Date: 20111221
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Peter N Schweitzer
Contact_Organization: USGS ER GD
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing address
Address: 12201 Sunrise Valley Drive
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
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Point
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 18576
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Geographic_Coordinate_Units: decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.4
Denominator_of_Flattening_Ratio: 294.98
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: main
Entity_Type_Definition: Sample locations and characteristics
Attribute:
Attribute_Label: recno
Attribute_Definition:
Record ID.

Sample identifier, links site description with analytical results. Integer values. Int of width 5.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 18669
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: longitude
Attribute_Definition:
Geographic longitude.

Geographic longitude in decimal degrees, NAD27. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 28 records have no value for longitude.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -179.119444
Range_Domain_Maximum: -67.021389
Attribute:
Attribute_Label: latitude
Attribute_Definition:
Geographic latitude.

Geographic latitide in decimal degrees, NAD27. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 28 records have no value for latitude.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 26.5625
Range_Domain_Maximum: 71
Attribute:
Attribute_Label: longdeg
Attribute_Definition:
Longitude degrees.

Degrees of longitude, NAD27. Integer values. Int of width 5.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 28 records have no value for longdeg.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 67
Range_Domain_Maximum: 179
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: longmin
Attribute_Definition:
Longitude minutes.

Minutes of longitude, NAD27. Integer values. Int of width 5.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 30 records have no value for longmin.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 59
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: longsec
Attribute_Definition:
Longitude seconds.

Seconds of longitude, NAD27. Integer values. Int of width 5.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 30 records have no value for longsec.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 60
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: west
Attribute_Definition:
Longitude hemisphere.

Hemisphere of longitude, E or W. Textual values of no more than 1 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 29 records have no value for west.
Attribute:
Attribute_Label: latdeg
Attribute_Definition:
Latitude degrees.

Degrees of latitude, NAD27. Integer values. Int of width 5.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 28 records have no value for latdeg.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 25
Range_Domain_Maximum: 71
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: latmin
Attribute_Definition:
Latitude minutes.

Minutes of latitude, NAD27. Integer values. Int of width 5.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 31 records have no value for latmin.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 60
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: latsec
Attribute_Definition:
Latitude seconds.

Seconds of latitude, NAD27. Integer values. Int of width 5.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 30 records have no value for latsec.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 60
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: north
Attribute_Definition:
Latitude hemisphere.

Hemisphere of latitude, N or S. Textual values of no more than 1 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 29 records have no value for north.
Attribute:
Attribute_Label: country
Attribute_Definition:
Country.

Country of site (US). Textual values of no more than 2 characters.
Attribute:
Attribute_Label: state
Attribute_Definition:
State or province.

State two letter postal abbreviation. Textual values of no more than 2 characters.
Attribute:
Attribute_Label: county
Attribute_Definition:
County.

County name, occasionally more than one name is given. Textual values of no more than 35 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 628 records have no value for county.
Attribute:
Attribute_Label: quadscale
Attribute_Definition:
Quadrangle map scale.

Map quadrangle scale. Textual values of no more than 9 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 63 records have no value for quadscale.
Attribute:
Attribute_Label: quadname
Attribute_Definition:
Quadrangle map name.

Map quadrangle name. Textual values of no more than 69 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 117 records have no value for quadname.
Attribute:
Attribute_Label: sampsour
Attribute_Definition:
Source of sample.

General type of material sampled or geographic feature from which the sample was taken. Textual values of no more than 38 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 371 records have no value for sampsour.
Attribute:
Attribute_Label: rockname
Attribute_Definition:
Rock name.

Lithologic terms describing the sample. Textual values of no more than 35 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 3 records have no value for rockname.
Attribute:
Attribute_Label: descrip
Attribute_Definition:
Description.

Further description of the sampled material, often includes a geologic unit or structural element within the unit. Textual values of no more than 257 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2385 records have no value for descrip.
Attribute:
Attribute_Label: labs
Attribute_Definition:
Laboratories.

Organizations whose laboratories provided the analyses. Textual values of no more than 107 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 729 records have no value for labs.
Attribute:
Attribute_Label: compiled
Attribute_Definition:
Compiler name.

Name of the person who compiled the data. Textual values of no more than 17 characters.
Attribute:
Attribute_Label: datecomp
Attribute_Definition:
Date compiled.

Date record information was compiled, as year and month formatted as YYYY MM. Textual values of no more than 6 characters.
Attribute:
Attribute_Label: locprec
Attribute_Definition:
Precision of location.

Comments on the precision of the location given. Textual values of no more than 65 characters.
Attribute:
Attribute_Label: loccomm
Attribute_Definition:
Location comment.

General comments on the location given. Textual values of no more than 255 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2773 records have no value for loccomm.
Attribute:
Attribute_Label: ref
Attribute_Definition:
Reference.

Primary bibliographic reference in which the dates were published. Textual values of no more than 469 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2 records have no value for ref.
Attribute:
Attribute_Label: ref2
Attribute_Definition:
Reference addition.

Additional text of the bibliographic reference. Textual values of no more than 237 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 17856 records have no value for ref2.
Detailed_Description:
Entity_Type:
Entity_Type_Label: FT
Entity_Type_Definition: Fission track dating results, observations, and parameters
Attribute:
Attribute_Label: recno
Attribute_Definition:
Record ID.

Sample identifier, a value of main:recno. Integer values. Int of width 5.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 18669
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: ftrecno
Attribute_Definition:
Analysis ID.

Sequence number, for this sample, of this analysis. Integer values. Int of width 5.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 5
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: ftage
Attribute_Definition:
Calculated age.

Age estimate in millions of years. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 21 records have no value for ftage.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.02
Range_Domain_Maximum: 2346
Attribute:
Attribute_Label: fterr
Attribute_Definition:
Age uncertainty.

Uncertainty of the age estimate attributable to the analytical method, in millions of years. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 189 records have no value for fterr.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.04
Range_Domain_Maximum: 1000
Attribute:
Attribute_Label: ftmin
Attribute_Definition:
Rock or mineral analyzed.

Rock or mineral analyzed. Textual values of no more than 12 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 11 records have no value for ftmin.
Attribute:
Attribute_Label: ftlabno
Attribute_Definition:
Lab sample ID.

Identifier for this analysis assigned by the laboratory. Textual values of no more than 27 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 9 records have no value for ftlabno.
Attribute:
Attribute_Label: ftdeccon
Attribute_Definition:
Decay constants.

Radioactive decay constants used in calculations. Textual values of no more than 9 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 547 records have no value for ftdeccon.
Attribute:
Attribute_Label: trackdens
Attribute_Definition:
Track density.

Track density (count per square cm). Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 372 records have no value for trackdens.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 1123
Attribute:
Attribute_Label: fosstrack
Attribute_Definition:
Fossil tracks counted.

Fossil track density (count per square cm). Integer values. Int of width 5.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 435 records have no value for fosstrack.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 4152
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: indudens
Attribute_Definition:
Induced track density.

Induced track density (count per square cm). Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 372 records have no value for indudens.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.0072
Range_Domain_Maximum: 1479
Attribute:
Attribute_Label: indutrack
Attribute_Definition:
Induced tracks.

Induced tracks counted. Integer values. Int of width 5.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 437 records have no value for indutrack.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 10073
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: ratiotrack
Attribute_Definition:
Ratio of total to induced tracks.

Ratio of spontaneous to induced tracks. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1277 records have no value for ratiotrack.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.0083
Range_Domain_Maximum: 20.874
Attribute:
Attribute_Label: neutflux
Attribute_Definition:
Neutron flux density.

Thermal neutron flux used in irradiation (neutrons per square cm). Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 293 records have no value for neutflux.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.122
Range_Domain_Maximum: 8.8
Attribute:
Attribute_Label: ft_u_ppm
Attribute_Definition:
Uranium concentration.

Total uranium concentration in the sample, in parts per million by weight. Textual values of no more than 8 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 986 records have no value for ft_u_ppm.
Attribute:
Attribute_Label: addref
Attribute_Definition:
Bibliographic references.

Additional bibliographic reference information for this analysis. Textual values of no more than 29 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1391 records have no value for addref.
Attribute:
Attribute_Label: ftagecom
Attribute_Definition:
Age comments.

Comments on the age estimate, typically provides context for the age. Textual values of no more than 134 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 404 records have no value for ftagecom.
Attribute:
Attribute_Label: ftsampcom
Attribute_Definition:
Sample comments.

Comments on the sample analyzed. Textual values of no more than 75 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 963 records have no value for ftsampcom.
Attribute:
Attribute_Label: ftanalcom
Attribute_Definition:
Analytical comments.

Comments on the analytic method used. Textual values of no more than 134 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1140 records have no value for ftanalcom.
Attribute:
Attribute_Label: ftothcom
Attribute_Definition:
Other comments.

Other comments pertinent to this analysis. Textual values of no more than 255 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 811 records have no value for ftothcom.
Detailed_Description:
Entity_Type:
Entity_Type_Label: K_Ar
Entity_Type_Definition:
Potassium-Argon and Argon-Argon radiometric age results, observations, and parameters
Attribute:
Attribute_Label: recno
Attribute_Definition:
Record ID.

Sample identifier, a value of main:recno. Integer values. Int of width 5.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 18669
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: karrecno
Attribute_Definition:
Analysis ID.

Sequence number, for this sample, of this analysis. Integer values. Int of width 5.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 6
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: karage
Attribute_Definition:
Calculated age.

Age estimate in millions of years. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 70 records have no value for karage.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -0.09
Range_Domain_Maximum: 6882.45
Attribute:
Attribute_Label: karerr
Attribute_Definition:
Age uncertainty.

Uncertainty of the age estimate attributable to the analytical method, in millions of years. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1752 records have no value for karerr.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 940
Attribute:
Attribute_Label: karmin
Attribute_Definition:
Rock or mineral analyzed.

Rock or mineral analyzed. Textual values of no more than 47 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 127 records have no value for karmin.
Attribute:
Attribute_Label: karanaltype
Attribute_Definition:
Type of analysis.

Specific type of analytic method used. Textual values of no more than 46 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 83 records have no value for karanaltype.
Attribute:
Attribute_Label: karlabno
Attribute_Definition:
Lab sample ID.

Identifier for this analysis assigned by the laboratory. Textual values of no more than 34 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 10 records have no value for karlabno.
Attribute:
Attribute_Label: kardeccon
Attribute_Definition:
Decay constants.

Radioactive decay constants used in calculations. Textual values of no more than 36 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 5 records have no value for kardeccon.
Attribute:
Attribute_Label: k2opct
Attribute_Definition:
K2O concentration.

Potash concentration as weight percent of the sample. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2562 records have no value for k2opct.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 23233
Attribute:
Attribute_Label: 40arrad
Attribute_Definition:
Radiogenic argon-40 concentration.

Concentration of radiogenic 40Ar. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2622 records have no value for 40arrad.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -0.0063
Range_Domain_Maximum: 2453
Attribute:
Attribute_Label: pctradar
Attribute_Definition:
Percent radiogenic argon.

Percent of argon that is radiogenic. Integer values. Int of width 8.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2194 records have no value for pctradar.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 86868787
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: sampsuit
Attribute_Definition:
Sample suite number.

Group identifier of related samples. Integer values. Int of width 5.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 14168 records have no value for sampsuit.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 7
Range_Domain_Maximum: 641
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: addref
Attribute_Definition:
Bibliographic references.

Additional bibliographic reference information for this analysis. Textual values of no more than 51 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1391 records have no value for addref.
Attribute:
Attribute_Label: karcomm
Attribute_Definition:
Age comments.

Comments on the age estimate, typically provides context for the age. Textual values of no more than 90 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2806 records have no value for karcomm.
Attribute:
Attribute_Label: karsampcom
Attribute_Definition:
Sample comments.

Comments on the sample analyzed. Textual values of no more than 162 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 11619 records have no value for karsampcom.
Attribute:
Attribute_Label: karanalcom
Attribute_Definition:
Analytical comments.

Comments on the analytic method used. Textual values of no more than 255 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 7491 records have no value for karanalcom.
Attribute:
Attribute_Label: karothrcom
Attribute_Definition:
Other comments.

Other comments pertinent to this analysis. Textual values of no more than 373 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 10041 records have no value for karothrcom.
Detailed_Description:
Entity_Type:
Entity_Type_Label: Rb_Sr
Entity_Type_Definition:
Rubidium-Strontium radiometric dating results, observations, and parameters
Attribute:
Attribute_Label: recno
Attribute_Definition:
Record ID.

Sample identifier, a value of main:recno. Integer values. Int of width 5.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 18669
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: rbsrrecno
Attribute_Definition:
Analysis ID.

Sequence number, for this sample, of this analysis. Integer values. Int of width 5.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 24
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: rbsrage
Attribute_Definition:
Calculated age.

Age estimate in millions of years. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 991 records have no value for rbsrage.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.71
Range_Domain_Maximum: 7394.61
Attribute:
Attribute_Label: rbsrerr
Attribute_Definition:
Age uncertainty.

Uncertainty of the age estimate attributable to the analytical method, in millions of years. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2299 records have no value for rbsrerr.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.1
Range_Domain_Maximum: 560
Attribute:
Attribute_Label: 87_86init
Attribute_Definition:
Initial 87Sr/86Sr.

Initial ratio of 87Sr to 86Sr in the sampled material. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1688 records have no value for 87_86init.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.1037
Range_Domain_Maximum: 124.2
Attribute:
Attribute_Label: rbsrmin
Attribute_Definition:
Rock or mineral analyzed.

Rock or mineral analyzed. Textual values of no more than 46 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 26 records have no value for rbsrmin.
Attribute:
Attribute_Label: rbsranltyp
Attribute_Definition:
Type of analysis.

Specific type of analytic method used. Textual values of no more than 49 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 923 records have no value for rbsranltyp.
Attribute:
Attribute_Label: rbsrlabno
Attribute_Definition:
Analysis ID.

Identifier for this analysis assigned by the laboratory. Textual values of no more than 23 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 5 records have no value for rbsrlabno.
Attribute:
Attribute_Label: rbsrdeccon
Attribute_Definition:
Decay constants.

Radioactive decay constants used in calculations. Textual values of no more than 21 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 35 records have no value for rbsrdeccon.
Attribute:
Attribute_Label: rb_ppm
Attribute_Definition:
Rubidium concentration.

Rubidium concentration in parts per million by weight. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 444 records have no value for rb_ppm.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 164165
Attribute:
Attribute_Label: sr_ppm
Attribute_Definition:
Strontium concentration.

Strontium concentration in parts per million by weight. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1093 records have no value for sr_ppm.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.1
Range_Domain_Maximum: 21210
Attribute:
Attribute_Label: 87srrad
Attribute_Definition:
Radiogenic 87Sr.

Radiogenic 87Sr. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 6420 records have no value for 87srrad.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.01
Range_Domain_Maximum: 176
Attribute:
Attribute_Label: 87rb_86sr
Attribute_Definition:
Ratio 87Rb/86Sr.

Ratio of 87Rb to 86Sr counted by mass spectrometry. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1265 records have no value for 87rb_86sr.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 62166
Attribute:
Attribute_Label: 87sr_86sr
Attribute_Definition:
Ratio 87Sr/86Sr.

Ratio of 87Sr to 86Sr counted by mass spectrometry. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 689 records have no value for 87sr_86sr.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.043
Range_Domain_Maximum: 70758
Attribute:
Attribute_Label: norm
Attribute_Definition:
Normal?.

T or N or empty; meaning of this field is not clear. Textual values of no more than 1 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1058 records have no value for norm.
Attribute:
Attribute_Label: sampsuit
Attribute_Definition:
Sample suite number.

Group identifier of related samples. Integer values. Int of width 5.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 14168 records have no value for sampsuit.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 7
Range_Domain_Maximum: 641
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: addref
Attribute_Definition:
Bibliographic references.

Additional bibliographic reference information for this analysis. Textual values of no more than 51 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1391 records have no value for addref.
Attribute:
Attribute_Label: rbsragecom
Attribute_Definition:
Age comments.

Comments on the age estimate, typically provides context for the age. Textual values of no more than 87 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2721 records have no value for rbsragecom.
Attribute:
Attribute_Label: rbsrsamcom
Attribute_Definition:
Sample comments.

Comments on the sample analyzed. Textual values of no more than 104 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 6498 records have no value for rbsrsamcom.
Attribute:
Attribute_Label: rbsranlcom
Attribute_Definition:
Analytical comments.

Comments on the analytic method used. Textual values of no more than 227 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1543 records have no value for rbsranlcom.
Attribute:
Attribute_Label: rbsrothcom
Attribute_Definition:
Other comments.

Other comments pertinent to this analysis. Textual values of no more than 211 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 4255 records have no value for rbsrothcom.
Detailed_Description:
Entity_Type:
Entity_Type_Label: Sm_Nd
Entity_Type_Definition:
Samarium-Neodymium radiometric dating results, observations, and parameters
Attribute:
Attribute_Label: recno
Attribute_Definition:
Record ID.

Sample identifier, a value of main:recno. Integer values. Int of width 5.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 18669
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: smndrecno
Attribute_Definition:
Analysis ID.

Sequence number, for this sample, of this analysis. Integer values. Int of width 5.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 3
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: smndage
Attribute_Definition:
Calculated age.

Age estimate in millions of years. Integer values. Int of width 5.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1 records have no value for smndage.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 178
Range_Domain_Maximum: 575
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: smnderr
Attribute_Definition:
Age uncertainty.

Uncertainty of the age estimate attributable to the analytical method, in millions of years. Integer values. Int of width 5.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2 records have no value for smnderr.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 21
Range_Domain_Maximum: 75
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: smndmin
Attribute_Definition:
Rock or mineral analyzed.

Rock or mineral analyzed. Textual values of no more than 21 characters.
Attribute:
Attribute_Label: smndlabno
Attribute_Definition:
Analysis ID.

Identifier for this analysis assigned by the laboratory. Textual values of no more than 8 characters.
Attribute:
Attribute_Label: smnddeccon
Attribute_Definition:
Decay constants.

Radioactive decay constants used in calculations. Real numbers stored in double precision.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.00000654
Range_Domain_Maximum: 0.00000654
Attribute:
Attribute_Label: sm_ppm
Attribute_Definition:
Samarium concentration.

Samarium concentration in parts per million by weight. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 27 records have no value for sm_ppm.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.88
Range_Domain_Maximum: 14.81
Attribute:
Attribute_Label: nd_ppm
Attribute_Definition:
Neodymium concentration.

Neodymium concentration in parts per million by weight. Real numbers stored in double precision.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.15
Range_Domain_Maximum: 50.46
Attribute:
Attribute_Label: 143smrad
Attribute_Definition:
Ratio 147Sm/144Nd.

Ratio of counts of 147Sm to 144Nd in the sample, measured by mass spectrometry. Real numbers stored in double precision.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.1074
Range_Domain_Maximum: 0.3809
Attribute:
Attribute_Label: 143ndrat
Attribute_Definition:
Ratio 143Nd/144Nd.

Ratio of counts of 143Nd to 144Nd in the sample, measured by mass spectrometry. Real numbers stored in double precision.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.51079
Range_Domain_Maximum: 0.513212
Attribute:
Attribute_Label: smndagecom
Attribute_Definition:
Age comments.

Comments on the age estimate, typically provides context for the age. Textual values of no more than 40 characters.
Attribute:
Attribute_Label: smndothcom
Attribute_Definition:
Other comments.

Other comments pertinent to this analysis. Textual values of no more than 80 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 32 records have no value for smndothcom.
Detailed_Description:
Entity_Type:
Entity_Type_Label: U_Th_Pb
Entity_Type_Definition:
Radiometric age estimates, observations, and parameters using techniques involving isotopes of uranium, thorium, and lead.
Attribute:
Attribute_Label: recno
Attribute_Definition:
Record ID.

Sample identifier, a value of main:recno. Integer values. Int of width 5.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 18669
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: upbrecno
Attribute_Definition:
Analysis ID.

Sequence number, for this sample, of this analysis. Integer values. Int of width 5.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1 records have no value for upbrecno.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 33
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: 206_238age
Attribute_Definition:
Age 206Pb/238U.

Age estimate in millions of years using the 206Pb-238U method. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 575 records have no value for 206_238age.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.1
Range_Domain_Maximum: 16300
Attribute:
Attribute_Label: err206_238
Attribute_Definition:
Age uncertainty 206Pb/238U.

Uncertainty of the age estimate by the 206Pb-238U method attributable to the analytical method, in millions of years. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2194 records have no value for err206_238.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 1285
Attribute:
Attribute_Label: 207_235age
Attribute_Definition:
Age 207Pb/235U.

Age estimate in millions of years using the 207Pb-235U method. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 611 records have no value for 207_235age.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -26.6
Range_Domain_Maximum: 4460
Attribute:
Attribute_Label: err207_235
Attribute_Definition:
Age uncertainty 207Pb/235U.

Uncertainty of the age estimate by the 207Pb-235U method attributable to the analytical method, in millions of years. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2186 records have no value for err207_235.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -350
Range_Domain_Maximum: 2127
Attribute:
Attribute_Label: 207_206age
Attribute_Definition:
Age 207Pb/206Pb.

Age estimate in millions of years using the 207Pb-206Pb method. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 12 records have no value for 207_206age.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -50000
Range_Domain_Maximum: 4792.4
Attribute:
Attribute_Label: err207_206
Attribute_Definition:
Age uncertainty 207Pb/206Pb.

Uncertainty of the age estimate by the 207Pb-206Pb method attributable to the analytical method, in millions of years. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2058 records have no value for err207_206.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 320
Attribute:
Attribute_Label: 208_232age
Attribute_Definition:
Age 208Pb/232Th.

Age estimate in millions of years using the 208Pb-232Th method. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1994 records have no value for 208_232age.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 24.5
Range_Domain_Maximum: 13383
Attribute:
Attribute_Label: err208_232
Attribute_Definition:
Age uncertainty 208Pb/232Th.

Uncertainty of the age estimate by the 208Pb-232Th method attributable to the analytical method, in millions of years. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2421 records have no value for err208_232.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.8
Range_Domain_Maximum: 210
Attribute:
Attribute_Label: uintcpt
Attribute_Definition:
Upper intercept.

Upper intercept of the Concordia diagram. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1267 records have no value for uintcpt.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 14.9
Range_Domain_Maximum: 3900
Attribute:
Attribute_Label: erruintcpt
Attribute_Definition:
Upper intercept uncertainty.

Uncertainty in the upper intercept. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1458 records have no value for erruintcpt.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 550
Attribute:
Attribute_Label: lintcpt
Attribute_Definition:
Lower intercept.

Lower intercept of the Concordia diagram. Textual values of no more than 8 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2172 records have no value for lintcpt.
Attribute:
Attribute_Label: errlintcpt
Attribute_Definition:
Lower intercept uncertainty.

Uncertainty in the lower intercept. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2243 records have no value for errlintcpt.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.8
Range_Domain_Maximum: 900
Attribute:
Attribute_Label: pbinitrat
Attribute_Definition:
Initial lead isotopic composition.

Initial ratios of lead isotopes in common lead, in sequence: 206Pb/204Pb, 207Pb/204Pb, 208Pb/204Pb. Textual values of no more than 24 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1253 records have no value for pbinitrat.
Attribute:
Attribute_Label: upbmin
Attribute_Definition:
Rock or mineral analyzed.

Rock or mineral analyzed. Textual values of no more than 52 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 8 records have no value for upbmin.
Attribute:
Attribute_Label: upblabno
Attribute_Definition:
Analysis ID.

Identifier for this analysis assigned by the laboratory. Textual values of no more than 26 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 7 records have no value for upblabno.
Attribute:
Attribute_Label: upbdeccon
Attribute_Definition:
Decay constants.

Radioactive decay constants used in calculations. Textual values of no more than 35 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 5 records have no value for upbdeccon.
Attribute:
Attribute_Label: u_ppm
Attribute_Definition:
Uranium concentration.

Uranium concentration in parts per million by weight. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 409 records have no value for u_ppm.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 791000
Attribute:
Attribute_Label: th_ppm
Attribute_Definition:
Thorium concentration.

Thorium concentration in parts per million by weight. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1894 records have no value for th_ppm.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.1
Range_Domain_Maximum: 414000
Attribute:
Attribute_Label: pb_ppm
Attribute_Definition:
Lead concentration.

Lead concentration in parts per million by weight. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 431 records have no value for pb_ppm.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.01
Range_Domain_Maximum: 170100
Attribute:
Attribute_Label: 204pb
Attribute_Definition:
Isotopic concentration 204Pb.

Concentration of 204Pb isotope in the sample. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 812 records have no value for 204pb.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 83.62
Attribute:
Attribute_Label: 206pb
Attribute_Definition:
Isotopic concentration 206Pb.

Concentration of 206Pb isotope in the sample. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 786 records have no value for 206pb.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.228
Range_Domain_Maximum: 95.51
Attribute:
Attribute_Label: 207pb
Attribute_Definition:
Isotopic concentration 207Pb.

Concentration of 207Pb isotope in the sample. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 787 records have no value for 207pb.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.1455
Range_Domain_Maximum: 46.02
Attribute:
Attribute_Label: 208pb
Attribute_Definition:
Isotopic concentration 208Pb.

Concentration of 208Pb isotope in the sample. Real numbers stored in double precision.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 787 records have no value for 208pb.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.053
Range_Domain_Maximum: 1889
Attribute:
Attribute_Label: sampsuit
Attribute_Definition:
Sample suite number.

Group identifier of related samples. Integer values. Int of width 5.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 14168 records have no value for sampsuit.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 7
Range_Domain_Maximum: 641
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: addref
Attribute_Definition:
Bibliographic references.

Additional bibliographic reference information for this analysis. Textual values of no more than 25 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1391 records have no value for addref.
Attribute:
Attribute_Label: upbagecom
Attribute_Definition:
Age comments.

Comments on the age estimate, typically provides context for the age. Textual values of no more than 84 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1661 records have no value for upbagecom.
Attribute:
Attribute_Label: upbsampcom
Attribute_Definition:
Sample comments.

Comments on the sample analyzed. Textual values of no more than 224 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 699 records have no value for upbsampcom.
Attribute:
Attribute_Label: upbanalcom
Attribute_Definition:
Analytical comments.

Comments on the analytic method used. Textual values of no more than 199 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1294 records have no value for upbanalcom.
Attribute:
Attribute_Label: upbothrcom
Attribute_Definition:
Other comments.

Other comments pertinent to this analysis. Textual values of no more than 255 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 757 records have no value for upbothrcom.
Detailed_Description:
Entity_Type:
Entity_Type_Label: datadxny
Entity_Type_Definition: Data dictionary, explaining tables and fields
Attribute:
Attribute_Label: id
Attribute_Definition:
Row ID.

Row identifier within datadxny table. Integer values. Int of width 0.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 149
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: tblorder
Attribute_Definition:
Table order.

Order in which this table should appear in some presentations. Integer values. Int of width 0.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 7
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: tblname
Attribute_Definition:
Table name.

Name of the table. Textual values of no more than 20 characters.
Attribute:
Attribute_Label: number
Attribute_Definition:
Field order.

Order in which this field occurs in the RDBMS. Integer values. Int of width 0.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 7 records have no value for number.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 31
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: label
Attribute_Definition:
Field label.

Label of the field in the RDBMS. Textual values of no more than 32 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 7 records have no value for label.
Attribute:
Attribute_Label: category
Attribute_Definition:
Category.

General category of information provided by the contents of the field. Textual values of no more than 50 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 7 records have no value for category.
Attribute:
Attribute_Label: short_desc
Attribute_Definition:
Short description.

Descriptive name of the field used in some presentations, not constrained by rules affecting the label. Textual values of no more than 40 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 7 records have no value for short_desc.
Attribute:
Attribute_Label: description
Attribute_Definition:
Description.

Longer description of the purpose and contents of the field. Textual values of no more than 4096 characters.
Attribute:
Attribute_Label: link
Attribute_Definition:
Link.

URL providing more information about the field. Textual values of no more than 96 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 149 records have no value for link.
Attribute:
Attribute_Label: origin
Attribute_Definition:
Origin.

Abbreviation of an organization, data set, or other entity responsible for defining the field. Textual values of no more than 12 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 149 records have no value for origin.
Attribute:
Attribute_Label: sqltype
Attribute_Definition:
SQL data type.

Data type of the field as used in the RDBMS. Textual values of no more than 8 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 7 records have no value for sqltype.
Attribute:
Attribute_Label: dbftype
Attribute_Definition:
DBF field type.

Data type of the field when expressed in DBF. Textual values of no more than 1 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 7 records have no value for dbftype.
Attribute:
Attribute_Label: width
Attribute_Definition:
DBF field width.

Field width when expressed in DBF. Integer values. Int of width 0.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 7 records have no value for width.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 4096
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: prec
Attribute_Definition:
DBF field precision.

Precision of the field (places to right of decimal) when expressed in DBF, only for numeric fields. Integer values. Int of width 0.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 76 records have no value for prec.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 6
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: units
Attribute_Definition:
Units.

Units of measure of the field values. Textual values of no more than 64 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 149 records have no value for units.

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Peter N Schweitzer
Contact_Organization: USGS ER GD
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing address
Address: 12201 Sunrise Valley Drive
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
Resource_Description: USGS Open-File Report 2003-236
Distribution_Liability:
This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey (USGS) editorial standards or with the North American Stratigraphic Code. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: WMS
Format_Version_Number: 1.3.0
Format_Information_Content: Sample characteristics and geologic age information
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Digital_Form:
Digital_Transfer_Information:
Format_Name: WFS
Format_Version_Number: 1.0.0
Format_Information_Content: Sample characteristics and geologic age analyses
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Shapefile
Format_Version_Number: 1.0
Format_Information_Content: Sample characteristics and geologic age information
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Digital_Form:
Digital_Transfer_Information:
Format_Name: CSV
Format_Information_Content: Sample characteristics and geologic age information
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Fees: none
Metadata_Reference_Information:
Metadata_Date: 20161207
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Schweitzer, Peter, N
Contact_Organization: Eastern Mineral Resources Team
Contact_Address:
Address_Type: mailing address
Address: 12201 Sunrise Valley Drive Mail Stop 954
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 703-648-6533
Contact_Electronic_Mail_Address: pschweitzer@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

This page is <https://mrdata.usgs.gov/metadata/ofr-2003-236.html>

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Page Contact Information: Peter Schweitzer
Page Last Modified: Monday, 24-Apr-2017 10:34:45 MDT

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