GCMD Chronostratigraphic Units Types Keywords

PENNSYLVANIAN

https://gcmd.earthdata.nasa.gov/kms/concept/b99b0ad0-93d2-4acf-912c-13d5a1ba12a6

broader
https://gcmd.earthdata.nasa.gov/kms/concept/b5b2981d-1623-4988-8b28-4cb8085a62e1 original
narrower
b99b0ad0-93d2-4acf-912c-13d5a1ba12a6 original
change note
2019-11-19 12:52:46.0 [tstevens] Insert Concept
add narrower relation (PENNSYLVANIAN [b99b0ad0-93d2-4acf-912c-13d5a1ba12a6,396505] - UPPER [5fab652d-b69a-4005-b6cf-6d9d4a533703,423413]);
2019-11-19 12:52:56.0 [tstevens] Insert Concept
add narrower relation (PENNSYLVANIAN [b99b0ad0-93d2-4acf-912c-13d5a1ba12a6,396505] - MIDDLE [26d10402-338b-433e-a90e-5952e3ae044d,423417]);
2019-11-19 12:53:03.0 [tstevens] Insert Concept
add narrower relation (PENNSYLVANIAN [b99b0ad0-93d2-4acf-912c-13d5a1ba12a6,396505] - LOWER [981c3e53-263e-4a91-a2ca-f5896635bbbd,423421]);
2019-12-17 09:26:45.0 [tstevens]
insert Definition (id: null
text: The Pennsylvanian is the younger of two subperiods (or upper of two subsystems) of the Carboniferous Period. It lasted from roughly 323.2 million years ago to 298.9 million years ago. As with most other geochronologic units, the rock beds that define the Pennsylvanian are well identified, but the exact date of the start and end are uncertain by a few hundred thousand years.
language code: en);
definition The Pennsylvanian is the younger of two subperiods (or upper of two subsystems) of the Carboniferous Period. It lasted from roughly 323.2 million years ago to 298.9 million years ago. As with most other geochronologic units, the rock beds that define the Pennsylvanian are well identified, but the exact date of the start and end are uncertain by a few hundred thousand years.
narrower
https://gcmd.earthdata.nasa.gov/kms/concept/26d10402-338b-433e-a90e-5952e3ae044d original
broader
b99b0ad0-93d2-4acf-912c-13d5a1ba12a6 original
https://gcmd.earthdata.nasa.gov/kms/concept/5fab652d-b69a-4005-b6cf-6d9d4a533703 original
broader
b99b0ad0-93d2-4acf-912c-13d5a1ba12a6 original
https://gcmd.earthdata.nasa.gov/kms/concept/981c3e53-263e-4a91-a2ca-f5896635bbbd original
broader
b99b0ad0-93d2-4acf-912c-13d5a1ba12a6 original
reference
text International Commission on Stratigraphy (http://www.stratigraphy.org/)
type
Resource
type
Resource original
Concept original
in scheme chronounits original