GCMD Chronostratigraphic Units Types Keywords

LLANDOVERY

https://gcmd.earthdata.nasa.gov/kms/concept/ec205df2-0e6a-4ffe-a7f6-8f20592345f7

broader
https://gcmd.earthdata.nasa.gov/kms/concept/3be2d037-28aa-40c7-8877-530fbcaa2c03 original
narrower
ec205df2-0e6a-4ffe-a7f6-8f20592345f7 original
change note
2019-11-21 09:03:52.0 [tstevens] Insert Concept
add broader relation (LLANDOVERY [ec205df2-0e6a-4ffe-a7f6-8f20592345f7,423505] - SILURIAN [3be2d037-28aa-40c7-8877-530fbcaa2c03,396411]);
2019-11-21 09:06:34.0 [tstevens] Insert Concept
add narrower relation (LLANDOVERY [ec205df2-0e6a-4ffe-a7f6-8f20592345f7,423505] - TELYCHIAN [608cfddd-ac10-4617-815c-1171a00ab54a,423525]);
2019-11-21 09:06:56.0 [tstevens] Insert Concept
add narrower relation (LLANDOVERY [ec205df2-0e6a-4ffe-a7f6-8f20592345f7,423505] - AERONIAN [3f87a2a4-2e77-4955-83a4-f3ecad41ec1c,423529]);
2019-11-21 09:07:36.0 [tstevens] Insert Concept
add narrower relation (LLANDOVERY [ec205df2-0e6a-4ffe-a7f6-8f20592345f7,423505] - RHUDDANIAN [4b67850f-0a8a-4e35-b6db-ea37d8cbfbea,423533]);
2019-12-17 12:20:32.0 [tstevens]
insert Definition (id: null
text: The Llandovery epoch (from 443.8 ± 1.5 million years ago to 433.4 ± 0.8 million years ago) occurred at the beginning of the Silurian period. The Llandoverian epoch follows the massive Ordovician-Silurian extinction events, which led to a large decrease in biodiversity and an opening up of ecosystems. Widespread reef building started in this period and continued into the Devonian period when rising water temperatures are thought to have bleached out the coral by killing their photo symbionts. The Llandoverian epoch ended with the Ireviken event which killed off 50% of trilobite species, and 80% of the global conodont species.
language code: en);
definition The Llandovery epoch (from 443.8 ± 1.5 million years ago to 433.4 ± 0.8 million years ago) occurred at the beginning of the Silurian period. The Llandoverian epoch follows the massive Ordovician-Silurian extinction events, which led to a large decrease in biodiversity and an opening up of ecosystems. Widespread reef building started in this period and continued into the Devonian period when rising water temperatures are thought to have bleached out the coral by killing their photo symbionts. The Llandoverian epoch ended with the Ireviken event which killed off 50% of trilobite species, and 80% of the global conodont species.
narrower
https://gcmd.earthdata.nasa.gov/kms/concept/3f87a2a4-2e77-4955-83a4-f3ecad41ec1c original
broader
ec205df2-0e6a-4ffe-a7f6-8f20592345f7 original
https://gcmd.earthdata.nasa.gov/kms/concept/4b67850f-0a8a-4e35-b6db-ea37d8cbfbea original
broader
ec205df2-0e6a-4ffe-a7f6-8f20592345f7 original
https://gcmd.earthdata.nasa.gov/kms/concept/608cfddd-ac10-4617-815c-1171a00ab54a original
broader
ec205df2-0e6a-4ffe-a7f6-8f20592345f7 original
reference
text International Commission on Stratigraphy (http://www.stratigraphy.org/)
type
Resource
type
Resource original
Concept original
in scheme chronounits original