GCMD Chronostratigraphic Units Types Keywords

CALLOVIAN

https://gcmd.earthdata.nasa.gov/kms/concept/4e10cbfa-f2d3-4397-a353-752126197158

broader
https://gcmd.earthdata.nasa.gov/kms/concept/2df3bf58-8e9d-4c08-8370-3678b7bc94f6 original
narrower
4e10cbfa-f2d3-4397-a353-752126197158 original
change note
2019-10-09 07:36:10.0 [tstevens] Insert Concept
add broader relation (CALLOVIAN [4e10cbfa-f2d3-4397-a353-752126197158,369321] - MIDDLE [2df3bf58-8e9d-4c08-8370-3678b7bc94f6,369301]);
2019-10-11 14:51:01.0 [tstevens]
insert Definition (id: null
text: In the geologic timescale, the Callovian is an age and stage in the Middle Jurassic, lasting between 166.1 ± 4.0 Ma (million years ago) and 163.5 ± 4.0 Ma. It is the last stage of the Middle Jurassic, following the Bathonian and preceding the Oxfordian.
language code: en);
definition In the geologic timescale, the Callovian is an age and stage in the Middle Jurassic, lasting between 166.1 ± 4.0 Ma (million years ago) and 163.5 ± 4.0 Ma. It is the last stage of the Middle Jurassic, following the Bathonian and preceding the Oxfordian.
reference
text International Commission on Stratigraphy (http://www.stratigraphy.org/)
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