Concept information
Preferred term
Rhaetian
Definition
- The Rhaetian is the latest age of the Triassic Period (in geochronology) or the uppermost stage of the Triassic System (in chronostratigraphy). It was preceded by the Norian and succeeded by the Hettangian (the lowermost stage or earliest age of the Jurassic). The base of the Rhaetian lacks a formal GSSP, though candidate sections include Steinbergkogel in Austria and Pignola-Abriola in Italy. The end of the Rhaetian (and the base of the overlying Hettangian Stage) is more well-defined. According to the current ICS (International Commission on Stratigraphy) system, the Rhaetian ended 201.4 ± 0.2 Ma (million years ago). During the Rhaetian, Pangaea began to break up, though the Atlantic Ocean was not yet formed. The Rhaetian is named after the Rhaetian Alps, a mountain chain stretching over parts of eastern Switzerland, northern Italy and western Austria. (Adapted from: https://en.wikipedia.org/wiki/Rhaetian)
Broader concept
In other languages
-
French
URI
http://data.loterre.fr/ark:/67375/QX8-BPZK6MDZ-C
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