1. THORS ontology updated to align with OWL-Time (instead of ISO 19108).
2. GTS ontology updated to use sam-lite (instead of OWL implementation of ISO 19156)
with a lightweight SOSA alignment
3. Spatial data uses GeoSPARQL (instead of OWL implementation of ISO 19107)
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| 2009-05-01 Introduced Holocene subdivisions, as shown in 2018 version from stratigraphy.org
- see
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2017-02-22 Added additional collections for eras of each rank;
classified rank-based collections using XKOS;
cleaned out legacy Base* instances that did not have links;
renamed *[GS]SP individuals to *SP;
removed all boundaries as TopConcepts, leaving on PreCambrian and Phanerozoic as TopConcepts
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| 2017/02 - Paleogene: Base of Chattian: The numeric age is updated to that at the ratified
GSSP (27.82 Ma; Nanno et al. exp. 2017; by request of Simonetti Monechi)
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| 2018-09-27 fixed some broken namespaces and prefixes, mostly related to SPARQL - some
kind of search/replace error
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2019-05-01 - Updated to 2018-08 version;
removed StratigraphicPoints, Ranks, TimePositions collections;
nested sub-collections in GeochronologicEra
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2019-06-10 - This revision adjusts the nomenclature of units to use only chronologic
terminology rather than stratigraphic terminology [e.g. Cambrian-Age 2 in place of
Cambrian-Stage 2; Cambrian-Epoch 2 in place of Cambrian-Series 2; Early/Late in place
of Lower/Upper (namely in application to Epoch/time units rather than their equivalent
Series/stratigraphic units—e.g. Early Jurassic Epoch rather than Lower Jurassic Series)];
and the whole artefact is renamed ‘Geologic Time Scale’.
Also: changed samfl:shape --> geo:hasGeometry
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| 2020-01-13 - fix errors in Permian/Carboniferous - see https://github.com/GeoscienceAustralia/geosciml.org/issues/3#issuecomment-560054965 |
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| 2020-01-13 - updated to 2019 version see http://stratigraphy.org/ICSchart/ChangeLog2012-2013-2014-2015-2016-2017-2018-2019.txt |
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| 2020-06-05 - updated to 2020 version see https://stratigraphy.org/icschart/ChangeLog2012-2013-2014-2015-2016-2017-2018-2019-2020.txt |
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| Added informal definition of chronometric temporal reference system - Millions of
years, counting backwards from 1950
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| See <http://stratigraphy.org/ICSchart/ChangeLog2012-2013-2014-2015-2016-2017-2018.txt>
for changes from prior versions
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