Aptian (~ 121.4 Ma)
Zurück zu ZeitskalaDarstellung und Status
- Index
- apt
- Farbe CMYK
- 25 / 0 / 45 / 0
- Farbe RGB
- R: 191 G: 228 B: 138
- Rang
- chronostratigraphische Stufe / geochronologisches Alter
- Gebrauch
- Element ist in Gebrauch
- Status
- gültiger formeller Begriff
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- Aptian (~ 121.4 Ma)
- Herkunft des Namens
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Named after the town of Apt (Vaucluse, France).
- Historische Varianten
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Aptien (d'Orbigny 1840, Sornay et al. 1957), 26e Etage = Aptien (Greppin 1866), Aptésien (Kilian 1910), Néocomien supérieur
Hierarchie und Abfolge
- Untergeordnete Einheiten
- Hangendes
- Untergrenze
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The base of the Aptian is determined by the geomagnetic reversal at the start of the M0r chronozone, which is biologically near the first appearance of the ammonite Paradeshayesites oglanlensis.
Alter
- Alter Top
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- Aptien
- Alter Basis
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- Aptien
Geografie
- Typusregion
- Vaucluse (France)
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Clansayésien
- Name Origin
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Named after the village of Clansayes (Drôme, France).
- Rang
- Chronostratigraphie / Geochronologie
- Status
- lokaler Begriff (informell)
- Kurzbeschreibung
- Local chronostratigraphic substage corresponding to the Late Aptian.
- Age
- Spätes Aptien
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Gargasian
- Name Origin
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Named after the village of Gargas (Vaucluse, France).
- Rang
- chronostratigraphische Sub-Stufe
- Status
- lokaler Begriff (informell)
- Kurzbeschreibung
- Local chronostratigraphic subdivision corresponding to the latest Early Aptian and to the Middle Aptian.
- Age
- Frühes Aptien
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Bedoulian
- Name Origin
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Named after the village of La Bédoule (Bouches-du-Rhône, France), near Cassis.
- Rang
- Chronostratigraphie / Geochronologie
- Status
- lokaler Begriff (informell)
- Gültiger Begriff
- Aptian
- Kurzbeschreibung
- Local chronostratigraphic subdivision designating the Early Aptian. The Bedoulian, based on pelagic deposits (Marno-calcaires de la Bedoule), is approximately equivalent to the Rhodanian, which is based on littoral deposits.
- Age
- Frühes Aptien
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Selli level (OAE 1a)
- Name Origin
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Named after the Italian geologist Raimondo Selli (1916-1983).
- Rang
- OAE
- Status
- gültig
- Kurzbeschreibung
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Oceanic anoxic event at the base of the Aptian (around 120 Ma ago) with a major impact on the chemistry of the oceans worldwide.
- Age
- Frühes Aptien