Chronometric Age Vocabulary List of Terms

Chronometric Age Vocabulary List of Terms

Title
Chronometric Age Vocabulary List of Terms
Namespace IRI:
http://rs.tdwg.org/chrono/terms/
Preferred namespace abbreviation
chrono:
Date version issued
2021-04-27
Date created
2021-04-27
Part of TDWG Standard
http://www.tdwg.org/standards/450
This version
http://rs.tdwg.org/dwc/doc/chrono/2021-04-27
Latest version
http://rs.tdwg.org/dwc/doc/chrono/
Abstract
The Chronometric Age Vocabulary is a standard for transmitting information about chronometric ages - the processes and results of an assay or other analysis used to determine the age of a MaterialSample. This document lists all terms in namespaces currently used in the vocabulary.
Contributors
John Wieczorek, Laura Brenskelle, Robert Guralnick, Kitty Emery, Michelle LeFebvre, Neill Wallis, Steve Baskauf, Marie Elise Lecoq, Eric Kansa, Sarah Kansa, Denné Reed
Creator
TDWG Darwin Core Chronometric Age Extension Task Group
Bibliographic citation
TDWG Darwin Core Chronometric Age Extension Task Group. 2021. Chronometric Age Vocabulary. Biodiversity Information Standards (TDWG). http://rs.tdwg.org/dwc/doc/chrono/2021-04-27

1 Introduction

This document contains all versions of terms in the Chronometric Age vocabulary (http://rs.tdwg.org/version/chrono/2021-02-21). The vocabulary uses the namespace abbreviation chrono:. Earlier term versions using the zooarchnet: namespace are deprecated and should no longer be used. These deprecated terms can be found at http://rs.tdwg.org/chrono/zooarchnet/.

For a simplified list that contains only the currently recommended terms, see the Chronometric Age Quick Reference Guide (https://tdwg.github.io/chrono/terms/).

1.1 Status of the content of this document

In Section 4, the values of the Term IRI, and Definition are normative. The values of Term Name are non-normative, although one can expect that the namespace abbreviation prefix is one commonly used for the term namespace. Label and the values of all other properties (such as Notes and Examples) are non-normative.

1.2 RFC 2119 key words

The key words “MUST”, “MUST NOT”, “REQUIRED”, “SHALL”, “SHALL NOT”, “SHOULD”, “SHOULD NOT”, “RECOMMENDED”, “MAY”, and “OPTIONAL” in this document are to be interpreted as described in RFC 2119.

2 Use of Terms

The terms in this standard are meant to provide stable definitions that can be used in a variety of contexts, but were envisioned principally to function together as an extension to Darwin Core, where each core record may be annotated by one or more chronometric ages.

3 Term index

3.1 Index By Term Name

(See also 3.2 Index By Label)

Classes

chrono:ChronometricAge

Chronometric Age

chrono:chronometricAgeConversionProtocol | chrono:chronometricAgeDeterminedBy | chrono:chronometricAgeDeterminedDate | chrono:chronometricAgeID | chrono:chronometricAgeProtocol | chrono:chronometricAgeReferences | chrono:chronometricAgeRemarks | chrono:chronometricAgeUncertaintyInYears | chrono:chronometricAgeUncertaintyMethod | chrono:earliestChronometricAge | chrono:earliestChronometricAgeReferenceSystem | chrono:latestChronometricAge | chrono:latestChronometricAgeReferenceSystem | chrono:materialDated | chrono:materialDatedID | chrono:materialDatedRelationship | chrono:maximumChronometricAge | chrono:maximumChronometricAgeReferenceSystem | chrono:minimumChronometricAge | chrono:minimumChronometricAgeReferenceSystem | chrono:uncalibratedChronometricAge | chrono:verbatimChronometricAge

IRI-value terms

chronoiri:chronometricAgeConversionProtocol | chronoiri:chronometricAgeDeterminedBy | chronoiri:chronometricAgeProtocol | chronoiri:chronometricAgeUncertaintyMethod | chronoiri:earliestChronometricAgeReferenceSystem | chronoiri:latestChronometricAgeReferenceSystem | chronoiri:materialDated

3.2 Index By Label

(See also 3.1 Index By Term Name)

Classes

Chronometric Age

Chronometric Age

Chronometric Age Conversion Protocol | Chronometric Age Determined By | Chronometric Age Determined Date | Chronometric Age ID | Chronometric Age Protocol | Chronometric Age References | Chronometric Age Remarks | Chronometric Age Uncertainty In Years | Chronometric Age Uncertainty Method | Earliest Chronometric Age | Earliest Chronometric Age Reference System | Latest Chronometric Age | Latest Chronometric Age Reference System | Material Dated | Material Dated ID | Material Dated Relationship | Maximum Chronometric Age | Maximum Chronometric Age Reference System | Minimum Chronometric Age | Minimum Chronometric Age Reference System | Uncalibrated Chronometric Age | Verbatim Chronometric Age

IRI-value terms

Chronometric Age Conversion Protocol (IRI) | Chronometric Age Determined By (IRI) | Chronometric Age Protocol (IRI) | Chronometric Age Uncertainty Method (IRI) | Earliest Chronometric Age Reference System (IRI) | Latest Chronometric Age Reference System (IRI) | Material Dated (IRI)

4 Vocabulary

Term Name chrono:ChronometricAge
Term IRI http://rs.tdwg.org/chrono/terms/ChronometricAge
Modified 2021-02-21
Term version IRI http://rs.tdwg.org/chrono/terms/version/ChronometricAge-2021-02-21
Label Chronometric Age
Definition An approximation of a temporal position (in the sense conveyed by https://www.w3.org/TR/owl-time/#time:TemporalPosition) that is supported via evidence.
Notes The age of a specimen and how this age is known, whether by a dating assay, a relative association with dated material, or legacy collections information.
Examples
  • An age range associated with a specimen derived from an AMS dating assay applied to an oyster shell in the same stratum
  • An age range associated with a specimen derived from a ceramics analysis based on other materials found in the same stratum
  • A maximum age associated with a specimen derived from K-Ar dating applied to a proximal volcanic tuff found stratigraphically below the specimen
  • An age range of a specimen based on its biostratigraphic context
  • An age of a specimen based on what is reported in legacy collections data.
ABCD equivalence https://terms.tdwg.org/wiki/abcd-efg:StratigraphicAttributions-RadiometricDates
Type Class
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:chronometricAgeConversionProtocol
Term IRI http://rs.tdwg.org/chrono/terms/chronometricAgeConversionProtocol
Modified 2021-02-02
Term version IRI http://rs.tdwg.org/chrono/terms/version/chronometricAgeConversionProtocol-2021-02-02
Label Chronometric Age Conversion Protocol
Definition The method used for converting the uncalibratedChronometricAge into a chronometric age in years, as captured in the earliestChronometricAge, earliestChronometricAgeReferenceSystem, latestChronometricAge, and latestChronometricAgeReferenceSystem fields.
Notes For example, calibration of conventional radiocarbon age or the currently accepted age range of a cultural or geological period.
Examples INTCAL13, sequential 6 phase Bayesian model and IntCal13 calibration
ABCD equivalence https://terms.tdwg.org/wiki/abcd-efg:StratigraphicAttributions-ChronostratigraphicAttribution-Method
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chronoiri:chronometricAgeConversionProtocol
Term IRI http://rs.tdwg.org/chrono/iri/chronometricAgeConversionProtocol
Modified 2021-02-02
Term version IRI http://rs.tdwg.org/chrono/iri/version/chronometricAgeConversionProtocol-2021-02-02
Label Chronometric Age Conversion Protocol (IRI)
Definition The method used to convert the uncalibratedChronometricAge into a chronometric age in years, as captured in earliestChronometricAge, earliestChronometricAgeReferenceSystem, latestChronometricAge, and latestChronometricAgeReferenceSystem.
Notes Terms in the chronoiri namespace are intended to be used in RDF with non-literal objects.
ABCD equivalence not in ABCD
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:chronometricAgeDeterminedBy
Term IRI http://rs.tdwg.org/chrono/terms/chronometricAgeDeterminedBy
Modified 2021-02-02
Term version IRI http://rs.tdwg.org/chrono/terms/version/chronometricAgeDeterminedBy-2021-02-02
Label Chronometric Age Determined By
Definition A list (concatenated and separated) of names of people, groups, or organizations who determined the ChronometricAge.
Notes Recommended best practice is to separate the values in a list with space vertical bar space ( | ).
Examples Michelle LeFebvre | Neill Wallis
ABCD equivalence https://terms.tdwg.org/wiki/abcd-efg:StratigraphicAttributions-ChronostratigraphicAttribution-Identifiers
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chronoiri:chronometricAgeDeterminedBy
Term IRI http://rs.tdwg.org/chrono/iri/chronometricAgeDeterminedBy
Modified 2021-01-26
Term version IRI http://rs.tdwg.org/chrono/iri/version/chronometricAgeDeterminedBy-2021-01-26
Label Chronometric Age Determined By (IRI)
Definition A person, group, or organization that determined the ChronometricAge.
Notes Terms in the chronoiri namespace are intended to be used in RDF with non-literal objects.
ABCD equivalence not in ABCD
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:chronometricAgeDeterminedDate
Term IRI http://rs.tdwg.org/chrono/terms/chronometricAgeDeterminedDate
Modified 2020-11-17
Term version IRI http://rs.tdwg.org/chrono/terms/version/chronometricAgeDeterminedDate-2020-11-17
Label Chronometric Age Determined Date
Definition The date on which the ChronometricAge was determined.
Notes Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples 1963-03-08T14:07-0600 (8 Mar 1963 at 2:07pm in the time zone six hours earlier than UTC). 2009-02-20T08:40Z (20 February 2009 8:40am UTC). 2018-08-29T15:19 (3:19pm local time on 29 August 2018). 1809-02-12 (some time during 12 February 1809). 1906-06 (some time in June 1906). 1971 (some time in the year 1971).
ABCD equivalence https://terms.tdwg.org/wiki/abcd-efg:StratigraphicAttributions-RadiometricDate-AnalysisDateTime
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:chronometricAgeID
Term IRI http://rs.tdwg.org/chrono/terms/chronometricAgeID
Modified 2020-09-14
Term version IRI http://rs.tdwg.org/chrono/terms/version/chronometricAgeID-2020-09-14
Label Chronometric Age ID
Definition An identifier for the set of information associated with a ChronometricAge.
Notes May be a global unique identifier or an identifier specific to the dataset. This can be used to link this record to another repository where more information about the dataset is shared.
Examples https://www.canadianarchaeology.ca/samples/70673
ABCD equivalence not in ABCD
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:chronometricAgeProtocol
Term IRI http://rs.tdwg.org/chrono/terms/chronometricAgeProtocol
Modified 2020-11-17
Term version IRI http://rs.tdwg.org/chrono/terms/version/chronometricAgeProtocol-2020-11-17
Label Chronometric Age Protocol
Definition A description of or reference to the methods used to determine the chronometric age.
Examples radiocarbon AMS, K-Ar dates for the lower most marker tuff, historic documentation, ceramic seriation
ABCD equivalence https://terms.tdwg.org/wiki/abcd-efg:StratigraphicAttributions-ChronostratigraphicAttribution-Method
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chronoiri:chronometricAgeProtocol
Term IRI http://rs.tdwg.org/chrono/iri/chronometricAgeProtocol
Modified 2021-01-26
Term version IRI http://rs.tdwg.org/chrono/iri/version/chronometricAgeProtocol-2021-01-26
Label Chronometric Age Protocol (IRI)
Definition A method used to determine the chronometric age.
Notes Terms in the chronoiri namespace are intended to be used in RDF with non-literal objects.
ABCD equivalence not in ABCD
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:chronometricAgeReferences
Term IRI http://rs.tdwg.org/chrono/terms/chronometricAgeReferences
Modified 2020-11-17
Term version IRI http://rs.tdwg.org/chrono/terms/version/chronometricAgeReferences-2020-11-17
Label Chronometric Age References
Definition A list (concatenated and separated) of identifiers (publication, bibliographic reference, global unique identifier, URI) of literature associated with the ChronometricAge.
Notes Recommended best practice is to separate the values in a list with space vertical bar space ( | ).
Examples Pluckhahn, Thomas J., Neill J. Wallis, and Victor D. Thompson. 2020 The History and Future of Migrationist Explanation in the Archaeology of the Eastern Woodlands: A Review and Case Study of the Woodland Period Gulf Coast. Journal of Archaeological Research. https://doi.org/10.1007/s10814-019-09140-x
ABCD equivalence https://terms.tdwg.org/wiki/abcd-efg:StratigraphicAttributions-ChronostratigraphicAttribution-MeasurementOrFactReference
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:chronometricAgeRemarks
Term IRI http://rs.tdwg.org/chrono/terms/chronometricAgeRemarks
Modified 2020-11-17
Term version IRI http://rs.tdwg.org/chrono/terms/version/chronometricAgeRemarks-2020-11-17
Label Chronometric Age Remarks
Definition Notes or comments about the ChronometricAge.
Examples Beta Analytic number: 323913 | One of the Crassostrea virginica right valve specimens from North Midden Feature 17 was chosen for AMS dating, but it is unclear exactly which specimen it was.
ABCD equivalence https://terms.tdwg.org/wiki/abcd-efg:UnitStratigraphicDetermination-DatingComment
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:chronometricAgeUncertaintyInYears
Term IRI http://rs.tdwg.org/chrono/terms/chronometricAgeUncertaintyInYears
Modified 2021-02-02
Term version IRI http://rs.tdwg.org/chrono/terms/version/chronometricAgeUncertaintyInYears-2021-02-02
Label Chronometric Age Uncertainty In Years
Definition The temporal uncertainty of the earliestChronometricAge and latestChronometicAge in years.
Notes The expected unit for this field is years. The value in this field is number of years before and after the values given in the earliest and latest chronometric age fields within which the actual values are estimated to be.
Examples 100
ABCD equivalence https://terms.tdwg.org/wiki/abcd-efg:UnitStratigraphicDetermination-ChronostratigraphicAttribution-Accuracy
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chronoiri:chronometricAgeUncertaintyMethod
Term IRI http://rs.tdwg.org/chrono/iri/chronometricAgeUncertaintyMethod
Modified 2021-01-26
Term version IRI http://rs.tdwg.org/chrono/iri/version/chronometricAgeUncertaintyMethod-2021-01-26
Label Chronometric Age Uncertainty Method (IRI)
Definition The method used to generate the value of chronometricAgeUncertaintyInYears.
Notes Terms in the chronoiri namespace are intended to be used in RDF with non-literal objects.
ABCD equivalence not in ABCD
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:chronometricAgeUncertaintyMethod
Term IRI http://rs.tdwg.org/chrono/terms/chronometricAgeUncertaintyMethod
Modified 2020-11-17
Term version IRI http://rs.tdwg.org/chrono/terms/version/chronometricAgeUncertaintyMethod-2020-11-17
Label Chronometric Age Uncertainty Method
Definition The method used to generate the value of chronometricAgeUncertaintyInYears.
Examples 2-sigma calibrated range, Half of 95% confidence interval
ABCD equivalence https://terms.tdwg.org/wiki/abcd-efg:StratigraphicAttributions-ChronostratigraphicAttribution-Method
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:earliestChronometricAge
Term IRI http://rs.tdwg.org/chrono/terms/earliestChronometricAge
Modified 2021-01-26
Term version IRI http://rs.tdwg.org/chrono/terms/version/earliestChronometricAge-2021-01-26
Label Earliest Chronometric Age
Definition The maximum/earliest/oldest possible age of a specimen as determined by a dating method.
Notes The expected unit for this field is years. This field, if populated, must have an associated earliestChronometricAgeReferenceSystem.
Examples 100
ABCD equivalence https://terms.tdwg.org/wiki/abcd-efg:StratigraphicAttributions-ChronostratigraphicAttribution-UpperValue
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chronoiri:earliestChronometricAgeReferenceSystem
Term IRI http://rs.tdwg.org/chrono/iri/earliestChronometricAgeReferenceSystem
Modified 2021-01-26
Term version IRI http://rs.tdwg.org/chrono/iri/version/earliestChronometricAgeReferenceSystem-2021-01-26
Label Earliest Chronometric Age Reference System (IRI)
Definition The reference system associated with the earliestChronometricAge.
Notes Terms in the chronoiri namespace are intended to be used in RDF with non-literal objects.
ABCD equivalence not in ABCD
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:earliestChronometricAgeReferenceSystem
Term IRI http://rs.tdwg.org/chrono/terms/earliestChronometricAgeReferenceSystem
Modified 2021-01-26
Term version IRI http://rs.tdwg.org/chrono/terms/version/earliestChronometricAgeReferenceSystem-2021-01-26
Label Earliest Chronometric Age Reference System
Definition The reference system associated with the earliestChronometricAge.
Notes Recommended best practice is to use a controlled vocabulary.
Examples kya,mya,BP,AD,BCE,ka,Ma,Ga
ABCD equivalence not in ABCD
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:latestChronometricAge
Term IRI http://rs.tdwg.org/chrono/terms/latestChronometricAge
Modified 2021-01-26
Term version IRI http://rs.tdwg.org/chrono/terms/version/latestChronometricAge-2021-01-26
Label Latest Chronometric Age
Definition The minimum/latest/youngest possible age of a specimen as determined by a dating method.
Notes The expected unit for this field is years. This field, if populated, must have an associated latestChronometricAgeReferenceSystem.
Examples 27
ABCD equivalence https://terms.tdwg.org/wiki/abcd-efg:UnitStratigraphicDetermination-ChronostratigraphicAttribution-LowerValue
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:latestChronometricAgeReferenceSystem
Term IRI http://rs.tdwg.org/chrono/terms/latestChronometricAgeReferenceSystem
Modified 2021-01-26
Term version IRI http://rs.tdwg.org/chrono/terms/version/latestChronometricAgeReferenceSystem-2021-01-26
Label Latest Chronometric Age Reference System
Definition The reference system associated with the latestChronometricAge.
Notes Recommended best practice is to use a controlled vocabulary.
Examples kya,mya,BP,AD,BCE,ka,Ma,Ga
ABCD equivalence not in ABCD
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chronoiri:latestChronometricAgeReferenceSystem
Term IRI http://rs.tdwg.org/chrono/iri/latestChronometricAgeReferenceSystem
Modified 2021-01-26
Term version IRI http://rs.tdwg.org/chrono/iri/version/latestChronometricAgeReferenceSystem-2021-01-26
Label Latest Chronometric Age Reference System (IRI)
Definition The reference system associated with the latestChronometricAge.
Notes Terms in the chronoiri namespace are intended to be used in RDF with non-literal objects.
ABCD equivalence not in ABCD
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chronoiri:materialDated
Term IRI http://rs.tdwg.org/chrono/iri/materialDated
Modified 2021-01-26
Term version IRI http://rs.tdwg.org/chrono/iri/version/materialDated-2021-01-26
Label Material Dated (IRI)
Definition The material on which the chronometricAgeProtocol was actually performed.
Notes Terms in the chronoiri namespace are intended to be used in RDF with non-literal objects.
ABCD equivalence not in ABCD
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:materialDated
Term IRI http://rs.tdwg.org/chrono/terms/materialDated
Modified 2020-11-17
Term version IRI http://rs.tdwg.org/chrono/terms/version/materialDated-2020-11-17
Label Material Dated
Definition A description of the material on which the chronometricAgeProtocol was actually performed, if known.
Examples Double Tuff, Charcoal found in Stratum V, charred wood, tooth
ABCD equivalence https://terms.tdwg.org/wiki/abcd-efg:UnitStratigraphicDetermination-MaterialDated
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:materialDatedID
Term IRI http://rs.tdwg.org/chrono/terms/materialDatedID
Modified 2021-02-05
Term version IRI http://rs.tdwg.org/chrono/terms/version/materialDatedID-2021-02-05
Label Material Dated ID
Definition An identifier for the MaterialSample on which the chronometricAgeProtocol was performed, if applicable.
Examples dwc:materialSampleID: https://www.ebi.ac.uk/metagenomics/samples/SRS1930158
ABCD equivalence not in ABCD
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:materialDatedRelationship
Term IRI http://rs.tdwg.org/chrono/terms/materialDatedRelationship
Modified 2021-01-26
Term version IRI http://rs.tdwg.org/chrono/terms/version/materialDatedRelationship-2021-01-26
Label Material Dated Relationship
Definition The relationship of the materialDated to the subject of the ChronometricAge record, from which the ChronometricAge of the subject is inferred.
Notes Recommended best practice is to use a controlled vocabulary.
Examples sameAs (cases where the subject material was completely destructively subsampled to get the ChronometricAge), subsampleOf (cases where part of the original specimen was extracted as the material used to determine the ChronometricAge), inContextWith (cases where the ChronometricAge is inferred from materialDated, such as sediments or cultural objects, in related temporal context),stratigraphicallyCorrelatedWith (cases where the ChronometricAge is inferred from materialDated in a stratigraphically correlated context)
ABCD equivalence not in ABCD
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:maximumChronometricAge
Term IRI http://rs.tdwg.org/chrono/terms/maximumChronometricAge
Modified 2021-01-26
Label Maximum Chronometric Age
This term is deprecated and should no longer be used.
Is replaced by http://rs.tdwg.org/chrono/terms/earliestChronometricAge
Definition Upper limit for the age of a specimen as determined by a dating method.
Notes The expected unit for this field is years. This field, if populated, must have an associated maximumChronometricAgeReferenceSystem.
Examples 27
ABCD equivalence https://terms.tdwg.org/wiki/abcd-efg:StratigraphicAttributions-ChronostratigraphicAttribution-UpperValue
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:maximumChronometricAgeReferenceSystem
Term IRI http://rs.tdwg.org/chrono/terms/maximumChronometricAgeReferenceSystem
Modified 2021-01-26
Label Maximum Chronometric Age Reference System
This term is deprecated and should no longer be used.
Is replaced by http://rs.tdwg.org/chrono/terms/earliestChronometricAgeReferenceSystem
Definition The reference system associated with the maximumChronometricAge.
Examples kya,mya,BP,AD,BCE
ABCD equivalence https://terms.tdwg.org/wiki/abcd-efg:UnitStratigraphicDetermination-TimeUnit
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:minimumChronometricAge
Term IRI http://rs.tdwg.org/chrono/terms/minimumChronometricAge
Modified 2021-01-26
Label Minimum Chronometric Age
This term is deprecated and should no longer be used.
Is replaced by http://rs.tdwg.org/chrono/terms/latestChronometricAge
Definition Lower limit for the age of a specimen as determined by a dating method.
Notes The expected unit for this field is years. This field, if populated, must have an associated maximumChronometricAgeReferenceSystem.
Examples 100
ABCD equivalence https://terms.tdwg.org/wiki/abcd-efg:UnitStratigraphicDetermination-ChronostratigraphicAttribution-LowerValue
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:minimumChronometricAgeReferenceSystem
Term IRI http://rs.tdwg.org/chrono/terms/minimumChronometricAgeReferenceSystem
Modified 2021-01-26
Label Minimum Chronometric Age Reference System
This term is deprecated and should no longer be used.
Is replaced by http://rs.tdwg.org/chrono/terms/latestChronometricAgeReferenceSystem
Definition The reference system associated with the minimumChronometricAge.
Examples kya,mya,BP,AD,BCE
ABCD equivalence https://terms.tdwg.org/wiki/abcd-efg:UnitStratigraphicDetermination-TimeUnit
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:uncalibratedChronometricAge
Term IRI http://rs.tdwg.org/chrono/terms/uncalibratedChronometricAge
Modified 2020-09-14
Term version IRI http://rs.tdwg.org/chrono/terms/version/uncalibratedChronometricAge-2020-09-14
Label Uncalibrated Chronometric Age
Definition The output of a dating assay before it is calibrated into an age using a specific conversion protocol.
Examples 1510 +/- 25 14C yr BP, 16.26 Ma +/- 0.016
ABCD equivalence not in ABCD
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33
Term Name chrono:verbatimChronometricAge
Term IRI http://rs.tdwg.org/chrono/terms/verbatimChronometricAge
Modified 2020-09-14
Term version IRI http://rs.tdwg.org/chrono/terms/version/verbatimChronometricAge-2020-09-14
Label Verbatim Chronometric Age
Definition The verbatim age for a specimen, whether reported by a dating assay, associated references, or legacy information.
Notes For example, this could be the radiocarbon age as given in an AMS dating report. This could also be simply what is reported as the age of a specimen in legacy collections data.
Examples 27 BC to 14 AD, stratigraphically pre-1104
ABCD equivalence not in ABCD
Type Property
Executive Committee decision http://rs.tdwg.org/decisions/decision-2021-04-27_33