Toarciar
| Toarciar | ||||
|---|---|---|---|---|
| Kronologia | ||||
| Hasiera | duela 182.700.000 urte | |||
| Amaiera | duela 174.100.000 urte | |||
| Honen parte da | Jurasiko Goiztiar eta ICS Standard Global Chronostratigraphic (Geochronologic) Scale (en)  | |||
| Etimologia | ||||
| Honen izena darama | Thouars | |||
| ||||
Toarciarra (edo Goi Liasa) Jurasikoko Liasen barneko azkeneko estaia da. Orain dela 183 Ma eta 175 Ma artean iraun zuen. Hasiera iraungitze prozesu batean ezarri zen.
Thouars (latinez: Toarcium) Frantziako Loirako Haranean dagoen Saumur hiritik hegoaldera dagoen herria da. Toarciarra d'Orbignyk 1842an izendatu zuen, jatorrizko kokapena Vrines harrobia izanik, Thouars udalerritik 2 kilometro ipar-mendebaldera. Toarciarraren oinarriko GSSP Portugalgo Penichen dago, eta 2014an ezarri zuten. Muga Dactylioceras (Eodactylites) azpigeneroko amoniteen lehen agerpenaren arabera definitzen da[1].
Erreferentziak
- ↑ (Ingelesez) Rocha, Rogério Bordalo da; Mattioli, Emanuela; Duarte, Luís Vítor; Pittet, Bernard; Elmi, Serge; Mouterde, René; Cabral, Maria Cristina; Comas-Rengifo, Maria José et al.. (2016-09-01). «Base of the Toarcian Stage of the Lower Jurassic defined by the Global Boundary Stratotype Section and Point (GSSP) at the Peniche section (Portugal)» Episodes Journal of International Geoscience 39 (3): 460–481. doi:. (kontsulta data: 2021-12-07).
Kanpo estekak
| Autoritate kontrola |
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Datuak: Q914363
| Jurasikoa | ||
|---|---|---|
| Behe Jurasiko (Lias) | Erdi Jurasiko (Dogger) | Goi Jurasiko (Malm) |
| Hettangiarra | Sinemuriarra Pliensbachiarra | Toarciarra |
Aaleniarra | Bajociarra Bathoniarra | Calloviarra |
Oxfordiarra | Kimmeridgiarra Tithoniarra |
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