GCMD Chronostratigraphic Units Types Keywords

RHUDDANIAN

https://gcmd.earthdata.nasa.gov/kms/concept/4b67850f-0a8a-4e35-b6db-ea37d8cbfbea

broader
https://gcmd.earthdata.nasa.gov/kms/concept/ec205df2-0e6a-4ffe-a7f6-8f20592345f7 original
narrower
4b67850f-0a8a-4e35-b6db-ea37d8cbfbea original
change note
2019-11-21 09:07:36.0 [tstevens] Insert Concept
add broader relation (RHUDDANIAN [4b67850f-0a8a-4e35-b6db-ea37d8cbfbea,423533] - LLANDOVERY [ec205df2-0e6a-4ffe-a7f6-8f20592345f7,423505]);
2019-12-17 12:40:43.0 [tstevens]
insert Definition (id: null
text: The Rhuddanian is the first age of the Silurian period and of the Llandovery epoch. The Silurian is in the Paleozoic era of the Phanerozoic eon. The Rhuddanian age began 443.8 ± 1.5 Ma and ended 440.8 ± 1.2 Ma (million years ago). It succeeds the Himantian Age (the last age of the Ordovician Period) and precedes the Aeronian age.
language code: en);
definition The Rhuddanian is the first age of the Silurian period and of the Llandovery epoch. The Silurian is in the Paleozoic era of the Phanerozoic eon. The Rhuddanian age began 443.8 ± 1.5 Ma and ended 440.8 ± 1.2 Ma (million years ago). It succeeds the Himantian Age (the last age of the Ordovician Period) and precedes the Aeronian age.
reference
text International Commission on Stratigraphy (http://www.stratigraphy.org/)
type
Resource
type
Resource original
Concept original
in scheme chronounits original