Early Jurassic (201.3 +/-0.2 Ma)
Zurück zu ZeitskalaDarstellung und Status
- Farbe CMYK
- 75 / 5 / 0 / 0
- Farbe RGB
- R: 66 G: 174 B: 208
- Rang
- chronostratigraphische Epoche / geochronologische Serie
- Gebrauch
- Element ist in Gebrauch
- Status
- gültiger formeller Begriff
- Diskussion des Status
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- Early Jurassic (201.3 +/-0.2 Ma)
- Historische Varianten
-
Eojurassique (Lugeon 1910: incl. Rhétien et Aalénien), Série paléojurassique (Revil 1911), Lias [sic]
Hierarchie und Abfolge
- Hangendes
Alter
- Alter Top
-
- Toarcien
- Alter Basis
-
- Hettangien
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Toarcian (184.2 +/-0.3 Ma)
- Name Origin
-
Named after the town of Thouars (Deux-Sèvres, France), south of Saumur. The protected stratotype lies in an old quarry. Its GSSP is located at Peniche (Portugal).
- Rang
- chronostratigraphische Stufe / geochronologisches Alter
- Status
- gültiger formeller Begriff
- Nomenclatorial Remarks
- <p>Latin: Toarcium</p>
- Kurzbeschreibung
-
The Toarcian is the youngest geochronologic age of the Early Jurassic. Its base, at the transition from the Pliensbachian, is placed at the first appearance of the ammonite genus Eodactylites and the base of the Aalenian (first appearance of the ammonite genus Leioceras) defines its end.
The Pliensbachian/Toarcian boundary is marked by a major faunal turnover and regional stratigraphic gaps, followed by a global Oceanic Anoxic Event (OAE) recorded as black shales (such as the well-known «Posidonienschiefer» of Southern Germany, equivalent to the French «schistes-carton»).
- Age
- Toarcien
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Late Toarcian
- Rang
- chronostratigraphische Sub-Stufe
- Status
- gültiger formeller Begriff
- Age
- spätes Toarcien
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Middle Toarcian
- Rang
- chronostratigraphische Sub-Stufe
- Status
- gültiger formeller Begriff
- Kurzbeschreibung
- The Middle Toarcian is defined biostratigraphically by the ammonite genera Hildoceras and Haugia.
- Age
- mittleres Toarcien
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Early Toarcian
- Rang
- chronostratigraphische Sub-Stufe
- Status
- gültiger formeller Begriff
- Kurzbeschreibung
-
The Early Toarcian is characterized almost worldwide by black shales (among which the well-known «Posidonienschiefer» of Southern Germany, and the French «schistes-carton») with an ammonite fauna composed mainly of dactylioceratids, harpoceratids and early hildoceratids.
- Age
- frühes Toarcien
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Toarcian Oceanic Anoxic Event
- Rang
- OAE
- Status
- informeller Begriff
- Kurzbeschreibung
-
Major oceanic anoxic event of the Early Toarcian (around 183 Ma ago), documented by black shale deposits found on all major continents (no oceanic drilling cores have recovered black shales of this age as there is little or no Toarcian ocean crust remaining in the world ocean). This event correlates with a marine extinction event.
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Pliensbachian (190.8 +/-1.0 Ma)
- Name Origin
-
Named after the village of Pliensbach (Baden-Württemberg, S Germany), 30 km E Stuttgart.
- Rang
- chronostratigraphische Stufe / geochronologisches Alter
- Status
- gültiger formeller Begriff
- Age
- Pliensbachien
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Domerian
- Name Origin
-
Named after Monte Domaro (Italia), Val Trompia / Lombardia.
- Rang
- chronostratigraphische Sub-Stufe
- Status
- informeller Begriff
- Kurzbeschreibung
-
Informal substage corresponding to the late Pliensbachian.
- Age
- spätes Pliensbachien (= Domérien)
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Carixian
- Name Origin
-
Named after Charmouth (Dorset, UK).
- Rang
- chronostratigraphische Sub-Stufe
- Status
- informeller Begriff
- Nomenclatorial Remarks
- Latin: Carixium
- Kurzbeschreibung
- First, informal substage of the Pliensbachian.
- Age
- frühes Pliensbachien (= Carixien)
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Sinemurian (199.3 +/-0.3 Ma)
- Name Origin
-
Named after the town of Sémur-en-Auxois (Côte-d'Or, France).
- Rang
- chronostratigraphische Stufe / geochronologisches Alter
- Status
- gültiger formeller Begriff
- Nomenclatorial Remarks
- <p>Latin: Sinemurium</p>
- Age
- Sinémurien
-
Lotharingian
- Name Origin
-
Named after the Lorraine region (Lotharingium = carolingian province), NE France.
- Rang
- Chronostratigraphie / Geochronologie
- Status
- obsoleter Begriff (nicht mehr verwendet)
- Kurzbeschreibung
-
Former chronostratigraphic subdivision corresponding to the Late Sinemurian substage.
- Age
- spätes Sinémurien
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Hettangian (201.3 +/-0.2 Ma)
- Name Origin
-
Named after the town of Hettange (Moselle, N France), just south of the border with Luxembourg,
- Rang
- chronostratigraphische Stufe / geochronologisches Alter
- Status
- gültiger formeller Begriff
- Kurzbeschreibung
-
First stage of the Jurassic.
- Age
- Hettangien