Concept information
Preferred term
Lower Ordovician
Definition
- The Lower Ordovician epoch (-485.4 Ma to –470.0 Ma) is the lower part of the Ordovician epoch. The Ordovician is named after the Welsh tribe of the Ordovices. The Early Ordovician climate was very hot, with intense greenhouse conditions and sea surface temperatures comparable to those during the Early Eocene Climatic Optimum. Carbon dioxide levels were very high at the Ordovician period's beginning. By the late Early Ordovician, the Earth cooled. (Adapted from: https://en.wikipedia.org/wiki/Ordovician)
Broader concept
Narrower concepts
Entry terms
- Early Ordovician
In other languages
-
French
URI
http://data.loterre.fr/ark:/67375/QX8-481BD26C-7
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