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

IRI-value terms

3.2 Index By Label

(See also 3.1 Index By Term Name)

Classes

Chronometric Age

Chronometric Age

IRI-value terms

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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/latestChronometricAge
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

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/materialDatedRelationship
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

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/earliestChronometricAgeReferenceSystem
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

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

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

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