GCMD Chronostratigraphic Units Types Keywords

TOARCIAN

https://gcmd.earthdata.nasa.gov/kms/concept/07d16792-c709-4db2-a744-97619e9bc680

broader
https://gcmd.earthdata.nasa.gov/kms/concept/bc9f3b87-69ff-4841-a227-309c69c952c2 original
narrower
07d16792-c709-4db2-a744-97619e9bc680 original
change note
2019-10-09 07:38:57.0 [tstevens] Insert Concept
add broader relation (TOARCIAN [07d16792-c709-4db2-a744-97619e9bc680,369337] - LOWER [bc9f3b87-69ff-4841-a227-309c69c952c2,369305]);
2019-10-11 13:21:03.0 [tstevens]
insert Definition (id: null
text: The Toarcian is, in the ICS' geologic timescale, an age and stage in the Early or Lower Jurassic. It spans the time between 182.7 Ma (million years ago) and 174.1 Ma. It follows the Pliensbachian and is followed by the Aalenian. The Toarcian age began with the Toarcian turnover, the extinction event that sets its fossil faunas apart from the previous Pliensbachian age.
language code: en);
definition The Toarcian is, in the ICS' geologic timescale, an age and stage in the Early or Lower Jurassic. It spans the time between 182.7 Ma (million years ago) and 174.1 Ma. It follows the Pliensbachian and is followed by the Aalenian. The Toarcian age began with the Toarcian turnover, the extinction event that sets its fossil faunas apart from the previous Pliensbachian age.
reference
text International Commission on Stratigraphy (http://www.stratigraphy.org/)
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in scheme chronounits original